JP2009027533A - Television receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a television receiver capable of performing a time shift reproduction function without increasing components such as large capacity storage means to the television receiver capable of communicating with a recording/reproduction apparatus. <P>SOLUTION: An instruction is given to a recording/reproduction apparatus Y through a CEC interface to designate a channel and perform the ring image recording of a broadcast program (S104); an instruction is given to the recording/reproduction apparatus Y through the CEC interface to perform time shift reproduction based on ring recorded image data according the detection of a time shift reproduction operation (S106); and a video image part is made to display an image based on a video signal of the time shift reproduction input through an HDMI receiving part from the recording/reproduction apparatus Y according to the instruction (S108). Further, an instruction is given to the recording/reproduction apparatus Y to store a part subjected to time shift reproduction in the ring recorded image data in a storage means independently of the ring recorded image data (S110). <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a video display unit that displays a video of a broadcast program, a communication unit that communicates with a recording / playback device, and a television receiver including a video signal input unit that inputs a video signal from the recording / playback device. Is.

A user (viewer) of a television receiver wants to watch a video of a specific scene (for example, a video of a scoring scene in a sports program or a video of a climax scene in a movie program) multiple times while watching a broadcast program. I have something to think about.
In response to such needs, for example, Patent Document 1 records the latest several seconds of broadcast program recording data in the storage means while performing processing (so-called ring recording) on the storage means. A television receiver having a replay function for performing reproduction based on recorded data (time shift reproduction described later) and displaying the reproduced video on a video display unit is shown.
In addition, recent recording / playback apparatuses record (record) recording data (digital data) on a randomly accessible data recording medium such as a hard disk or a DVD, and record the recorded data without waiting for the end of the recording. Many of them have a function of performing time-shifted reproduction (so-called chasing reproduction) for reproducing video and audio based thereon.

On the other hand, recent television receivers are increasingly equipped with an HDMI interface as a signal transmission means with an external device such as a recording / playback device.
The HDMI interface is one of means for performing signal transmission between a television receiver (a typical example of a television receiver) and a recording / playback apparatus or set-top box (STB), as disclosed in Patent Document 2, for example. It is a signal transmission means compliant with the HDMI standard. This HDMI interface can simultaneously transmit a digital video signal and an audio signal by a cable combined in appearance, and can realize simple wiring and signal transmission without deterioration. Here, the HDMI interface transmits unencoded (uncompressed) video signals and audio signals (transmitted by the baseband method), so it is not affected by the difference in the signal encoding method between devices. It is excellent in reliability and durability (possibility to be able to connect to a device that adopts a new encoding method in the future).
The HDMI standard further defines the CEC (Consumer Electronics Control) standard, and the HDMI interface is a signal transmission means including a signal transmission line (hereinafter referred to as a CEC line) compliant with the CEC standard. Composed. The HDMI interface including the CEC line can transmit other information (such as control information) through the CEC line in addition to the transmission of the video signal and the audio signal. Note that the HDMI interface can transmit video signals and audio signals only in one direction, but information transmission through the CEC line is possible in both directions.
JP-A-9-83958 JP 2004-208290 A

By the way, as shown in Patent Document 1, if a television receiver is provided with a recording and reproduction processing means and a recording data storage means for realizing time-shifted reproduction, the configuration of the apparatus is complicated, and consequently There was a problem of increasing the cost. In particular, if the broadcast program being watched is a high-definition video broadcast program such as a high-definition broadcast, the size of the recorded data becomes very large. There was a problem that storage means was required.
Accordingly, the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a television receiver capable of communicating with a recording / playback apparatus without increasing the number of components such as a large-capacity storage means. An object of the present invention is to provide a television receiver capable of realizing a time shift reproduction function.

In order to achieve the above object, a television receiver according to the present invention comprises the following components (1) to (6).
(1) A video display unit for displaying a video of a broadcast program of a channel selected as a viewing target (hereinafter referred to as a channel selection channel).
(2) Communication means for communicating with a recording / playback apparatus having a function for performing ring recording of a broadcast program and a function for performing time-shifted playback based on ring recording data recorded in the storage means by the ring recording.
(3) Video signal input means for inputting a video signal from the recording / playback apparatus.
(4) Ring recording instruction means for instructing the recording / reproducing apparatus to perform ring recording of a broadcast program by designating a channel through the communication means.
(5) Time shift playback instruction means for instructing the recording / playback apparatus through the communication means to perform time shift playback based on the ring recording data in response to detection of a time shift playback operation on a predetermined operation unit.
(6) Time for displaying on the video display unit a time-shifted playback video based on the video signal of the time-shift playback input from the recording / playback apparatus through the video signal input unit in response to an instruction from the time-shift playback instruction unit Shift reproduction video display control means.
A typical example of the communication unit and the video signal input unit is a communication unit and a video signal input unit that perform signal transmission conforming to the HDMI standard. Here, the communication means compliant with the HDMI standard means a signal transmission means compliant with the CEC standard.

The television receiver according to the present invention effectively uses each of the components (1) to (3) included in a general television receiver so that the connected external recording / playback apparatus can perform ring recording and recording. A time shift reproduction function is realized by executing time shift reproduction. The recording / playback apparatus generally includes a configuration for performing ring recording and time-shifted playback (a large-capacity storage means for storing recorded data (a hard disk drive is a typical example), a recording means, and a playback means). . As described above, the television receiver according to the present invention realizes the time shift reproduction function without increasing the number of components such as a large-capacity storage means.
In addition, it is preferable that the television receiver according to the present invention further includes a component shown in the following (7).
(7) Time-shift playback data storage for instructing the recording / playback apparatus through the communication means to store in the storage means separately from the ring recording data the portion of the ring recording data that is subject to time-shift playback Instruction means.
Thus, the user of the television receiver can store the recording data edited for the favorite scene portion in the broadcast program in the recording / playback apparatus while viewing the broadcast program.

It is also conceivable that the television receiver according to the present invention further includes the constituent elements shown in the following (8) and (9).
(8) The channel-selection channel ring recording instructing the recording / playback apparatus to perform ring recording of the broadcast program of the selected channel (that is, the broadcast program to be displayed) in the ring recording instruction unit. Instruction means.
(9) Channel change instruction means for instructing the recording / playback apparatus through the communication means to change the channel of the broadcast program to be subjected to ring recording in response to the change of the channel selection channel.
The television receiver having the components shown in (8) and (9) described above is a time-shifted reproduction (scene) of a scene in which the user has a broadcast program that is being viewed (that is, the broadcast program of the selected channel). This is suitable when it is desired to execute (replay), and does not require a special operation of designating a channel (broadcast channel) to be subjected to ring recording. In addition, the channel selection channel in the television receiver and the channel to be ring-recorded in the recording / playback apparatus are always in the same state, and the user wants to execute time-shifted playback for a scene with a broadcast program that the user is watching. If this happens, it is possible to avoid the situation that the ring recording of the broadcast program is not performed.
By the way, television receivers and recording / playback apparatuses that support digital broadcasting require a relatively long time to start up a digital device that performs video signal processing. Therefore, ring recording is immediately started from a standby state in which ring recording cannot be started immediately. It takes a relatively long time to get ready to start. For this reason, the recording / reproducing apparatus cannot start processing according to the instruction for a while even when receiving the instruction to execute ring recording or time shift reproduction in the standby state, and at a timing desired by the user. There may occur a situation in which time shift reproduction (replay) cannot be performed.
Therefore, the television receiver according to the present invention further shifts to an energized state in which the ring recording can be performed when energization of the video display unit is started in response to detection of a start operation on a predetermined operation unit. It is conceivable to include activation instruction means for instructing the recording / playback apparatus through the communication means.
In this case, it is conceivable that the channel selection channel ring recording instruction means further includes a start-up ring recording instruction means for instructing ring recording in conjunction with execution of the instruction by the activation instruction means.
As a result, it is possible to avoid as much as possible a situation in which time shift reproduction at the timing desired by the user cannot be executed.
In addition, the channel selection channel ring recording instruction means may be provided with a start recording detection ring recording instruction means for instructing ring recording in response to detection of a ring recording start operation for a predetermined operation unit.

It is also conceivable that the television receiver according to the present invention further includes the constituent elements shown in the following (10) and (11).
(10) Ring recording condition setting means for setting a channel for ring recording and a recording start time in accordance with an operation on a predetermined operation unit.
(11) Reserving ring recording instructing the recording / playback apparatus to perform ring recording of a broadcast program by designating the channel and recording start time set by the ring recording condition setting means in the ring recording instruction means Instruction means.
The television receiver including the components shown in (10) and (11) is suitable when the user has previously determined a broadcast program to be subjected to time shift reproduction. For example, when the user desires to perform time-shifted reproduction at any time for a specific broadcast program (so-called back program) different from the broadcast program being watched (that is, the broadcast program of the selected channel), or wants to watch This is suitable when, for example, the user wants to view the broadcast program from the beginning even when the broadcast program can be viewed only from a time later than the broadcast start time.
Further, as a specific example of the processing executed by the time shift reproduction video display control means, the following processing (12) or (13) can be considered.
(12) A process of displaying the time-shifted playback video together with the video already displayed on the video display unit.
(13) A process of displaying the time-shifted playback video by switching from the video already displayed on the video display unit.

  The television receiver according to the present invention realizes a time shift reproduction function by causing a connected external recording / reproduction apparatus to perform ring recording and time shift reproduction, and is used for components such as a large-capacity storage means. A time shift reproduction function can be realized without an increase.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings so that the present invention can be understood. The following embodiment is an example embodying the present invention, and does not limit the technical scope of the present invention.
FIG. 1 is a block diagram showing a schematic configuration of an AV system Z including a television receiver X according to an embodiment of the present invention. FIG. 2 shows a procedure of a first example of time shift reproduction control in the AV system Z. 3 is a flowchart showing the procedure of the second example of the time shift reproduction control in the AV system Z, FIG. 4 is a flowchart showing the procedure of the third example of the time shift reproduction control in the AV system Z, and FIG. 12 is a diagram illustrating an example of a display screen of a video display unit in the television receiver X. FIG.

First, the configuration of an AV system Z including a television receiver X and a recording / playback apparatus Y according to an embodiment of the present invention will be described with reference to the block diagram shown in FIG.
In the AV system Z, a television receiver X having a video display unit 5 and one or a plurality of recording / playback apparatuses Y having a reservation recording function and a time shift playback function are signal transmission means compliant with the HDMI standard. This is a system configured to be communicable through the HDMI interface W. Here, the HDMI interface W includes a TMDS (Transition Minimized Differential Signaling) line 41 for transmitting a video signal and an audio signal (both digital signals), and a CEC line 42 (CEC) compliant with the CEC standard which is an optional standard of the HDMI standard. Equivalent to a signal transmission line). The TMDS line 41 is composed of a plurality of signal lines, and the TMDS line 41 and the CEC line 42 are apparently configured as one HDMI cable 40.
The AV system Z is characterized in that the television receiver X realizes a time shift playback function by causing the connected recording / playback apparatus Y to perform ring recording and time shift playback.

[TV receiver X]
As shown in FIG. 1, a television receiver X according to an embodiment of the present invention includes a tuner 1, two HDMI receiving units 2xa and 2ya, a CEC interface 2xb, a video switching circuit 3, a video processing circuit 4, and a video display unit. 5, a control circuit 6, a remote control interface (I / F) circuit 7, a remote control 8, a sub MPU 9, an audio switching circuit 10, an audio processing circuit 11, an amplifier 12, a speaker 13, an energization switching circuit 14, and the like. Yes.

The tuner 1 extracts (selects) a broadcast channel signal designated by the control circuit 6 from a broadcast signal such as a terrestrial broadcast signal or a BS satellite broadcast signal, and detects a video signal and an audio signal by detecting the extracted signal. The signal is taken out, and the video signal and the audio signal are transmitted to the video switching circuit 3 and the audio switching circuit 10, respectively.
The HDMI receivers 2xa and 2ya (denoted as HDMI-RX in the figure) are signal transmission interfaces compliant with the HDMI standard (an example of the video signal input means). The HDMI receiving units 2xa and 2ya input video signals and audio signals from an external device (here, the recording / reproducing device Y) through the TMDS line 41 in a baseband manner, and input them to the video switching circuit 3 and the audio switching circuit 10. Transmit to each.
The CEC interface 2xb (an example of a communication unit) is a signal transmission interface that conforms to the CEC standard in the HDMI standard. The CEC interface 2xb transmits / receives information to / from an external device (here, the recording / playback device Y) through the CEC line 42. The direct transmission destination of the reception information and the direct supply source of the transmission information of the CEC interface 2xb are the sub MPU 9.
In the example illustrated in FIG. 1, the television receiver X includes two HDMI receiving units 2xa and 2ya corresponding to two recording / reproducing devices Y (external devices). Further, only one CEC interface 2xb is provided for the two recording / playback apparatuses Y.
The video switching circuit 3 receives video signals from the tuner 1 and the HDMI receiving units 2xa and 2ya, and selects and outputs any one of the video signals according to an instruction from the control circuit 6. It is.
The video processing circuit 4 performs various signal processing on the video signal output from the video switching circuit 3.
For example, the video processing circuit 4 has an OSD function and a multi-screen output function.
The OSD function is a function of superimposing (superimposing) a video of information specified by the control circuit 6 on a video based on a video signal from the video switching circuit 3 and displaying the video on the video display unit 5. The multi-screen output function is a function for displaying a plurality of videos (screens) based on each video signal side by side on the video display unit 5 when a plurality of video signals are transmitted from the video switching circuit 3. .
The video display unit 5 includes a liquid crystal display unit including a liquid crystal panel and a liquid crystal driver, and is based on a video signal output from the video processing circuit 4 (that is, a broadcast program of a selected channel selected as a viewing target). Video).

The audio switching circuit 10 receives the audio signal from the tuner 1 and the audio signals from the HDMI receiving units 2xa and 2ya, and selects one of the audio signals as an audio signal according to an instruction from the control circuit 6. This is output to the processing circuit 11.
The audio processing circuit 11 performs equalization processing, D / A conversion processing, and the like on the signal output from the audio switching circuit 10.
The amplifier 12 performs processing (volume adjustment processing) for amplifying or attenuating the audio signal processed by the audio processing circuit 11 in accordance with an instruction from the control circuit 6, and outputs it to the speaker 13.
Here, the tuner 1, the video switching circuit 3, the video processing circuit 4, the video display unit 5, the audio switching circuit 10, the audio processing circuit 11, and the amplifier 12 are used for television broadcast signal processing (channel selection). These are parts (hereinafter referred to as broadcast signal processing parts) related to processing, video processing, audio processing, and the like.
The energization switching circuit 14 changes the energization state of the television receiver X from “active state” to “standby state” in accordance with a control command from the sub MPU 9 in a state where a power supply circuit (not shown) is connected to a commercial power supply. Or a circuit for switching from the “standby state” to the “operating state”.
Here, the standby state means that power is supplied to the devices constituting the HDMI interface W, the remote control interface circuit 7 and the sub MPU 9, but power is supplied to the control circuit 6 and the digital processing component. It is a state that has not been performed.
On the other hand, the operating state is a state in which power is supplied to the remote control interface circuit 7, the energization switching circuit 14, the control circuit 6, and the broadcast signal processing component.

The control circuit 6 includes an MPU 6a which is an arithmetic means, a ROM 6b (EPROM) which is a storage means in which a control program executed by the MPU 6a is stored in advance, an EEPROM 6c which stores various information read and written in processing executed by the MPU 6a, and the like. Provided, and controls the entire television receiver X. The following processing and functions of the control circuit 6 are realized by the MPU 6a executing a program stored in the ROM 6b.
The control circuit 6 acquires EPG information (electronic program guide information) extracted from the broadcast signal by the tuner 1 and stores the EPG information in the EEPROM 6c. As is well known, the EPG information includes the broadcast time (start time and end time) of each broadcast program, title information, genre information, performer information, and the like.

The remote controller 8 is a remote controller that outputs a radio signal (for example, an infrared signal) for controlling the operation of the television receiver X, and includes an operation input unit (not shown), a radio signal output circuit, and the like.
The operation input unit is an operation unit for inputting information, such as a channel selection key and a volume control key, and a signal corresponding to the operation content is transmitted to the wireless signal output circuit. The wireless signal output circuit converts a signal transmitted from the operation input unit (that is, a control signal for the operation of the television receiver X) into a wireless signal (for example, an infrared signal), and the remote controller 8 To the TV main body side.
On the other hand, the remote control interface circuit 7 receives a radio signal (such as an infrared signal) transmitted from the remote controller 8 and converts it into an electrical signal, thereby acquiring various information transmitted from the remote controller 8 and acquiring the information. Information is transmitted to the sub MPU 9.
The sub MPU 9 is a microcomputer that executes processing for relaying information transmission between the control circuit 6, the remote control interface circuit 7, and the CEC interface 2xb.

[Recording / playback device Y]
As shown in FIG. 1, a recording / playback apparatus Y according to an embodiment of the present invention includes a tuner 21, a recording / playback circuit 22, an HDD 23 (hard disk drive), an HDMI transmission unit 25a, a CEC interface 25b, a control circuit 24, and a remote control interface. The circuit 26, the remote controller 27, the sub MPU 28, and the like are provided.
Here, the tuner 21, the remote control interface circuit 26, the remote control 27, and the sub MPU 28 are the same as the tuner 1, the remote control interface 7, the remote control 8, and the sub MPU 9 in the television receiver X, respectively.
The tuner 21, the recording / playback circuit 22 and the HDD 23 are components (hereinafter referred to as broadcast signal processing components) related to television broadcast signal processing (channel selection processing, video processing, audio processing, recording processing, playback processing, etc.). is there.
Further, the energization switching circuit 29 in the recording / reproducing apparatus Y changes the energization state of the recording / reproducing apparatus Y to the standby state and the operation in accordance with a control command from the sub MPU 28 in a state where a power circuit (not shown) is connected to a commercial power source. A circuit that switches to one of the states.
Here, in the standby state, power is supplied to the devices constituting the HDMI interface W, the remote control interface circuit 26, and the sub MPU 28, but the control circuit 24 and the broadcast signal processing components 21, 22, 22 are supplied. In this state, no power is supplied to 23. The operating state is a state in which power is supplied to the broadcast signal processing components 21 to 23, the control circuit 24, and various motors (drive sources) (not shown) from the standby state. This is a state where processing and playback processing can be started.

The HDMI transmission unit 25a (denoted as HDMI-TX in the figure) is a signal transmission interface compliant with the HDMI standard. The HDMI transmission unit 25a outputs a video signal and an audio signal through the TMDS line 41 to an external device (here, the television receiver X) in a baseband system.
Similar to the CEC interface 2xb in the television receiver X, the CEC interface 25b is a signal transmission interface compliant with the CEC standard in the HDMI standard. The CEC interface 25b transmits and receives information to and from an external device (here, the television receiver X) through the CEC line 42. The direct transmission destination of the reception information and the direct supply source of the transmission information of the CEC interface 25b are the sub MPU 28.

The recording / playback circuit 22 executes broadcast program recording processing and recorded program playback processing. That is, the recording / playback circuit 22 executes a recording process in which the broadcast signal (video signal and audio signal) of the program extracted by the tuner 21 is compression-encoded and recorded on the disk (hard disk) of the HDD 23. Further, the recording / playback circuit 22 executes a playback process of outputting to the outside through the HDMI transmission unit 25a while decoding the data of the broadcast program recorded (recorded) on the disk of the HDD 23.
The recording / reproducing circuit 22 sequentially records the recording data of the latest predetermined time (for example, several tens of minutes to several hours) on the disk of the HDD 23 in accordance with an instruction from the television receiver X. While performing the ring recording process, a function of executing a time shift reproduction process for performing a reproduction process based on the recording data recorded by the ring recording process is provided. A reproduction signal (video signal and audio signal) obtained by the time shift reproduction process is output to the television receiver X through the HDMI transmission unit 25a. Hereinafter, the process performed by the television receiver X and the recording / playback apparatus Y regarding the time shift playback process is referred to as time shift playback control.
Further, the recording / playback circuit 22 has an EPG acquisition function for extracting EPG information (electronic program guide information) included in the broadcast signal of the program extracted by the tuner 21 and recording it in the HDD 23.

The control circuit 24 includes an MPU 24a which is an arithmetic unit, a ROM 24b (EPROM) which is a storage unit in which a control program executed by the MPU 24a is stored in advance, an EEPROM 24c which stores various information read and written in processing executed by the MPU 24a, and the like. And controls the entire recording / playback apparatus Y. The processing and functions of the control circuit 24 described below are realized by the MPU 24a executing a program stored in the ROM 24b.
In addition, the control circuit 24 of the recording / reproducing apparatus Y performs a broadcast program (video and audio) based on the EPG information recorded on the disk of the HDD 23 by the recording / reproducing circuit 22 and the program reservation information recorded in the HDD 23 in advance. ) Reservation recording function for performing reservation recording. Here, the program reservation information is information that is preset by the control circuit 24 in accordance with an operation input through the remote controller 27 and recorded on the disk of the HDD 23. The program reservation information includes a recording start time, a recording end time, a broadcast channel and a title of the program to be recorded. Since the reserved recording function is a well-known function, detailed description thereof is omitted here.
The control circuit 24 also has a folder setting function for setting one or a plurality of folders (hereinafter referred to as storage folders) that are recording destinations (storage destinations) of the recording data in the HDD 23.
Thereby, when the recording destination folder is designated in the program reservation information, the control circuit 24 records the recording data in the designated folder.

[First example of time shift reproduction control]
Next, the procedure of the first example of the time shift reproduction control in the AV system Z will be described with reference to the flowchart shown in FIG.
Here, in the process shown in FIG. 2, when the television receiver X and the recording / reproducing apparatus Y are in the standby state, the user performs a power-on operation of the remote controller 8 (a startup operation of the television receiver X). Shall be started. Further, S101, S102,... Shown below represent identification codes of processing procedures (steps) on the television receiver X side, and S201, S202,... Represent identification codes of processing procedures on the recording / playback apparatus Y side.

In the time shift reproduction control, first, it is monitored whether or not the sub MPU 9 in the television receiver X has been turned on (start-up operation) through the remote controller 8 (an example of an operation unit) (S101).
Further, when the sub MPU 9 detects that the power ON operation has been performed, the sub MPU 9 sends a start instruction command for shifting the energization state of the external recording / playback apparatus Y from the standby state to the operation state. To the recording / playback apparatus Y (S102).
Further, when the sub MPU 9 detects that the power is turned on, the sub MPU 9 controls the energization switching circuit 14 to change the energization state of its own device to the standby state (the video display unit 5 and the broadcast signal). A starting process for switching from the state in which the processing component is not energized) to the operating state is executed (S103).
By executing this startup process, the video of the program of the channel selected by the tuner 1 is displayed on the video display unit 5, and the audio of the program is output by the speaker 13. Note that the channel (channel selection channel) selected at the time of activation is the channel selection channel immediately before execution of the previous stop process (immediately before the transition from the operating state to the standby state), and information on the channel selection channel is as follows. , Information recorded in the EEPROM 6c by the control circuit 6 during the previous stop process.
FIG. 5A is a diagram schematically showing an example of a state in which the video v0 of the broadcast program of the selected channel is displayed on the video display unit 5 by the process of step S103.

On the other hand, the sub MPU 28 in the recording / reproducing apparatus Y monitors whether or not the activation instruction command is received through the CEC interface 25b (S201).
When the sub MPU 28 detects the reception of the start instruction command, the sub MPU 28 controls the energization switching circuit 29 in response to this to change the energization state of its own device to the standby state (the broadcast signal processing components 21 to 23). A startup process for switching from the state where no power is supplied to the operation state to the operation state is executed (S202).
By executing this startup process, the recording process (including ring recording) of the program of the digital broadcast channel selected by the tuner 1 can be immediately executed.

Further, in the television receiver X, the control circuit 6 activated by the activation process (S103) performs ring recording of the broadcast program by designating the channel selected at that time and the time length of ring recording. Is transmitted through the CEC interface 2xb (S104, an example of the ring recording instruction means and the channel selection channel ring recording instruction means). The ring recording time length is information that the control circuit 6 stores in advance in the EEPROM 6c in response to an operation on the operation unit of the remote controller 8 (ring recording time length setting operation). The time length of the ring recording is set within a range of several tens of minutes to several hours, for example.
Further, the control circuit 6 monitors (detects) whether any one of the time shift reproduction execution operation, the channel selection operation (channel selection operation), and the power OFF operation is performed on the remote controller 8 (S105, S113, S115). Here, the time shift reproduction execution operation is, for example, an operation of pressing a “time shift key” provided on the remote controller 8.

On the other hand, in the recording / reproducing apparatus Y, the control circuit 24 activated by the activation process (S202) monitors whether the ring recording instruction command is received through the CEC interface 25b and the sub MPU 28 (S203).
When the control circuit 24 detects that the ring recording instruction command has been received from the television receiver X side, the recording / playback circuit 22 performs the ring recording instruction according to the control instruction from the control circuit 24. Ring recording processing of the broadcast program of the channel designated by the command (here, the channel selected in the television receiver X) is started (S204). The length of the ring recording time in this ring recording process is the time length specified by the ring recording instruction command. As a result of this ring recording process, the recording data for the specified time length (hereinafter referred to as ring recording data) is recorded on the disk of the HDD 23 of the recording / reproducing apparatus Y. Further, the control circuit 24 controls the tuner 21 so that the designated channel included in the ring recording instruction command is selected as a channel to be subjected to ring recording.
Thereafter, the control circuit 24 monitors whether or not a time shift reproduction execution command to be described later is received from the television receiver X side through the CEC interface 25b and the sub MPU 28 (S205).

On the other hand, in the television receiver X, when the control circuit 6 detects that the time shift reproduction execution operation is performed on the remote controller 8, it is recorded on the recording / reproducing apparatus Y by the ring recording process. The time shift reproduction execution instruction command instructing to execute time shift reproduction based on ring recording data and output the reproduction signal (video signal and audio signal) is transmitted through the CEC interface 2xb (S106, time shift) An example of reproduction instruction means).
On the other hand, when the control circuit 24 in the recording / playback apparatus Y detects reception of the time shift playback execution instruction command, the recording / playback circuit 22 converts the ring recording data into the ring recording data in accordance with a control command from the control circuit 24. Based on the time-shift playback process, the playback signal (playback video signal and playback audio signal) is output to the television receiver X through the HDMI transmission unit 25a (S206). At that time, the control circuit 24 sends an output request command for requesting the television receiver X to display a video by the video display unit 5 based on a reproduction signal output from the apparatus itself and to output a sound from the speaker 13. The data is transmitted through the CEC interface 25b (S206).
By the way, the time shift reproduction execution instruction command includes designation information of the start position of time shift reproduction in the ring video recording data. The designation information of the start position of the time shift reproduction is information that is preset by the control circuit 6 in accordance with a predetermined setting operation with respect to the remote controller 8 and recorded in the EEPROM 6c. Information indicating the time from the last position to the ring recording start position.
Then, the recording / reproducing circuit 22 in the recording / reproducing apparatus Y determines the time shift reproduction start position in the ring recording data according to the designation information of the time shift reproduction start position designated in the time shift reproduction execution instruction command. Identify.

On the other hand, in the television receiver X, whether or not the control circuit 6 receives the output request command from the recording / playback apparatus Y through the CEC interface 2xb after the transmission of the time shift playback execution instruction command (S106). Is determined (S107).
When the control circuit 6 detects that the output request command has been received, the control circuit 6 executes processing for outputting a time-shifted reproduction signal input through the HDMI receiving unit 2xa (or 2ya) in response to the reception. (S108). More specifically, the control circuit 6 controls the video switching circuit 3 and the video processing circuit 4 to thereby perform time-shift playback input from the recording / playback apparatus Y through the HDMI receiving unit 2xa (or 2ya). A video based on the video signal (time shift reproduction video) is displayed on the video display unit 5 (S108, an example of the time shift reproduction video display control means). At the same time, the control circuit 6 controls the audio switching circuit 10 so that audio based on the time-shifted reproduction audio signal input from the recording / reproducing apparatus Y through the HDMI receiving unit 2xa (or 2ya) is output to the speaker 13. Output from.
In step S108, the control circuit 6 according to the present embodiment displays the time-shifted playback video that has already been displayed on the video display unit 5 at that time (that is, the broadcast of the selected channel in the television receiver X). (Video of the program). If the control circuit 6 determines in step S107 that the output request command has not been received, the control circuit 6 skips steps S108 to S112.

FIG. 5B shows a state in which the time-shifted playback video v1 is displayed together with the broadcast program video v0 of the selected channel on the television receiver X by the processing of steps S106 to S108 and S205 to S206. It is an example of a screen.
As shown in FIG. 5B, in step S108, the control circuit 6 adds channel information d0 corresponding to each video v0, v1 in addition to the time-shifted playback video v1 and the broadcast program video v0 of the selected channel. d1 and various operation buttons bt1 to bt5 are displayed together on the video display unit 5. Here, the channel information d1 corresponding to the time-shifted playback video v1 is, for example, information on the selected channel in the television receiver X or information acquired from the recording / playback apparatus Y through the CEC interface 2xb. The control circuit 6 controls the video processing circuit 4 to display the channel information d0, d1 and the operation buttons bt1 to bt5 on the video display unit 5.
Further, the control circuit 6 operates a cursor movement operation (for example, pressing operation of the up / down / left / right arrow keys) on the remote controller 8 or an operation of a number key normally functioning as a channel selection key in the display state of the time shift reproduction video v1. Accordingly, the presence / absence of an operation on each of the operation buttons bt1 to bt5 is detected.
When the control circuit 6 detects that any one of the operation buttons bt1 to bt5 is operated, the control circuit 6 transmits an instruction command corresponding to the operated operation button to the recording / reproducing apparatus Y through the CEC interface 2xb. (S109, S110).

More specifically, when the control circuit 6 of the television receiver X detects that the playback start / stop button bt1 has been operated, the normal speed based on the ring recording data is detected each time the operation is detected. A command instructing to switch between executing the reproduction process in FIG. 4 or executing the still image reproduction process (so-called pause) is transmitted to the recording / reproducing apparatus Y (S109). On the other hand, when the recording / playback circuit 22 of the recording / playback apparatus Y receives an instruction command corresponding to the playback start / stop button bt1, playback at a normal speed based on the ring recording data is performed according to the instruction command. Switching between execution of processing and execution of still image reproduction processing (so-called pause) (S207).
Further, when the control circuit 6 of the television receiver X detects that the fast forward button bt2 or the fast reverse button bt3 has been operated, the process of either fast forward playback or fast reverse playback based on the ring recording data is performed. A command for instructing execution is transmitted to the recording / reproducing apparatus Y (S109). On the other hand, when the recording / playback circuit 22 of the recording / playback apparatus Y receives an instruction command corresponding to the fast-forward button bt2 or the previous fast-reverse button bt3, the fast-forward playback based on the ring-recorded data is performed according to the instruction command. Alternatively, it is switched which process of fast reverse playback is executed (S207).
Further, when the control circuit 6 of the television receiver X detects that the recording start / stop button bt4 has been operated, every time the operation is detected, the time-shifted reproduction of the ring recording data at that time is detected. A command is sent to the recording / playback apparatus Y to instruct whether to start or stop the process of saving the target portion to the disk of the HDD 23 separately from the ring recording data (S110, time) An example of shift reproduction data storage instruction means). On the other hand, when the recording / playback circuit 22 of the recording / playback apparatus Y receives an instruction command corresponding to the recording start / stop button bt4, time-shift playback of the ring recording data at that time is performed according to the instruction command. Is switched to start or stop the process of saving the portion to be stored in the disk of the HDD 23 separately from the ring recording data (S208).
Thereafter, the control circuit 6 of the television receiver X repeats the processes of steps S109 and S110 until it detects that the end button bt5 has been operated (S111). Further, the recording / playback circuit 22 of the recording / playback apparatus Y repeats the processes of steps S207 and S208 until it detects reception of an instruction command corresponding to the end button bt5 (S209).

When the control circuit 6 of the television receiver X detects that the end button bt5 has been operated (S111), the control circuit 6 executes time-shift playback end processing on the television receiver X side and performs recording. A command for instructing the playback device Y to end the time-shift playback process is transmitted through the CEC interface 2xb (S112). Here, the time shift reproduction end processing on the television receiver X side is performed by controlling the video switching circuit 3 and the video processing circuit 4 to thereby display the contents of the broadcast program of the selected channel in the television receiver X. Is a process of returning to the state of outputting only through the video display unit 5 and the speaker 13 (the state of FIG. 5A).
On the other hand, when the recording / reproducing circuit 22 of the recording / reproducing apparatus Y detects the reception of the instruction command corresponding to the end button bt5 (S209), the recording / reproducing circuit 22 performs time-shifted reproduction ending processing based on the ring recording data (S210). .

In the television receiver X, when the control circuit 6 detects that the channel selection operation has been performed through the remote controller 8 (S113), according to the change of the channel selection channel by the channel selection operation, A command for instructing to change the channel of the broadcast program to be subjected to the ring recording (ring recording channel instruction command) is transmitted to the recording / reproducing apparatus Y through the CEC interface 2xb (S114, an example of the channel change instruction means) ). As a result, information on the new channel selection channel is notified to the recording / playback apparatus Y.
On the other hand, the control circuit 24 in the recording / reproducing apparatus Y determines whether or not the ring recording channel instruction command is received from the television receiver X through the CEC interface 25b (S211). When the control circuit 24 detects the reception of the ring recording channel instruction command, the control circuit 24 controls the tuner 21 according to the command, thereby changing the channel to be subjected to the ring recording processing by the recording / playback circuit 22. (S212). As a result, the channel selection channel in the television receiver X and the channel to be subjected to ring recording in the recording / reproducing apparatus Y are always automatically matched.

In the television receiver X, when the control circuit 6 detects that the power-off operation has been performed through the remote controller 8 (S115), the recording / playback apparatus Y is changed from the operating state to the standby state. A stop instruction command for instructing the transfer of the data is transmitted through the CEC interface 2xb (S116).
Subsequently, the sub MPU 9 in the television receiver X executes a stop process for shifting the television receiver X from the operation state to the standby state by controlling the energization switching circuit 14 (S117). ), And then the process proceeds to step S101 described above.
On the other hand, when the sub MPU 28 in the recording / reproducing apparatus Y detects reception of the stop instruction command from the television receiver X through the CEC interface 25b, the recording / reproducing circuit 22 performs the ring recording process. Is terminated, the energization switching circuit 29 is controlled to execute a stop process for shifting the recording / playback apparatus Y from the operating state to the standby state (S214). Thereafter, the process is performed in step S201 described above. To move to.

As described above, the television receiver X uses the video display unit 5 and the CEC interface 2xb and the HDMI receiving units 2xa and 2ya included in a general television receiver to effectively connect the connected external devices. A time shift playback function is realized by causing the recording / playback apparatus Y to perform ring recording and time shift playback. In addition, the recording / reproducing apparatus Y generally includes a configuration for performing ring recording and time-shifted reproduction (a large-capacity HDD 23 for storing recording data and a recording / reproducing circuit 22). Thus, the television receiver X according to the present invention realizes a time shift reproduction function without increasing the number of components such as a large-capacity storage means.
In addition, the television receiver X instructs the recording / reproducing apparatus Y to store the portion of the ring recording data that is subject to time shift reproduction in the HDD 23 separately from the ring recording data (S110). ), The user of the television receiver X can store the recorded data edited on the favorite scene portion of the broadcast program in the HDD 23 of the recording / playback apparatus Y while viewing the broadcast program. .

Further, the television receiver X instructs the recording / playback apparatus Y to perform ring recording of the broadcast program of the selected channel (that is, the broadcast program to be displayed) (S104). In response to the change of the selected channel, the recording / playback apparatus Y is automatically instructed to change the channel of the broadcast program to be subjected to the ring recording (S114). Thus, when the user of the television receiver X desires to execute time-shifted reproduction (replay) for a scene of a broadcast program being viewed, a special operation for designating a channel to be subjected to ring recording is performed. There is no need to do it. In addition, the channel selection channel in the television receiver X and the channel to be subjected to ring recording in the recording / reproducing apparatus Y are always in the same state, and the user wants to execute time-shifted reproduction for a scene with a broadcast program that the user is viewing. If this happens, it is possible to avoid the situation that the ring recording of the broadcast program is not performed.
In addition, when the television receiver X performs a start-up process (when energization of the video display unit 5 is started), the recording / playback apparatus Y is instructed to shift to an energized state in which ring recording can be performed. Instructing (S102) and instructing ring recording together with the execution of the instruction (S104), it is possible to avoid as much as possible the situation in which time-shifted reproduction cannot be performed at the timing desired by the user.

[Second Example of Time Shift Playback Control]
Next, the procedure of the second example of the time shift reproduction control in the AV system Z will be described with reference to the flowchart shown in FIG.
Here, since the process shown in FIG. 3 is different only in a part of the process shown in FIG. 2, only the parts different from the process shown in FIG. 2 will be described below. In FIG. 3, steps that perform the same processing as the processing shown in FIG. 2 are assigned the same identification codes (S101, etc.) as in FIG.
As shown in FIG. 3, in the second example, in the processing on the television receiver X side, the processing in step S104 in the first example (FIG. 2) is replaced with new processing in steps S104a and S104b. , The processes of steps S113 and S114 in the first example are replaced with new processes of steps S113 ′ and S114 ′. The processing on the recording / playback apparatus Y side is the same as that in the first example in the second example.
In the second example, the control circuit 6 in the television receiver X determines whether or not a ring recording start operation has been performed on the remote controller 8 (operation unit) after the activation process (S103). (S104a). Further, when detecting that the ring recording start operation has been performed, the control circuit 6 transmits a command for instructing ring recording to the recording / playback apparatus Y in response to the detection of the operation (S104b). , An example of the ring recording instruction means when the start operation is detected).
Here, the ring recording start operation includes an operation of designating a channel to be subjected to ring recording. For example, the ring recording start operation is a combination operation of a pressing operation of a ring recording key provided on the remote controller 8 and a numerical key pressing operation for designating a channel.
On the other hand, in step S204, the control circuit 24 in the recording / playback apparatus Y controls the tuner 21, so that the designated channel included in the ring recording instruction command is selected as a channel to be subjected to ring recording. The

In step S113 ′, the control circuit 6 of the television receiver X monitors (detects) whether or not a ring recording channel change operation has been performed on the remote controller 8. Here, the ring recording channel changing operation is, for example, a combination operation of the ring recording key pressing operation and the numeric key pressing operation for designating the channel.
When the control circuit 6 detects that the ring recording channel change operation has been performed through the remote controller 8 (S113 ′), the channel of the broadcast program to be subjected to the ring recording is determined according to the channel change operation. Is sent to the recording / playback apparatus Y through the CEC interface 2xb (S114 '). As a result, information on a new channel to be subjected to ring recording is notified to the recording / reproducing apparatus Y.
On the other hand, the control circuit 24 in the recording / reproducing apparatus Y executes the processes after step S211 described above.
As in the second example, the user of the television receiver X can specify a channel to be subjected to ring recording and time shift reproduction independently of the channel selection channel in the television receiver X. It is also possible.

[Third example of time shift reproduction control]
Next, the procedure of the third example of the time shift reproduction control in the AV system Z will be described. The flowchart shown in FIG. 4 represents the procedure of the third example of the time shift reproduction control in the AV system Z.
In this third example, before the processing shown in FIG. 4 is executed, the control circuit 6 of the television receiver X uses the following ring recording condition setting processing and setting information obtained by the recording recording / playback device Y Execute the process to send to.
More specifically, the control circuit 6 performs a ring recording target channel (broadcast channel) to be executed by the recording / playback apparatus Y in response to an operation on the operation unit of the remote controller 8 and an execution timing of the ring recording ( The ring recording condition setting process for setting the recording start time and end time is executed (not shown, an example of the ring recording condition setting means).
Further, the control circuit 6 transmits the setting information by the ring recording condition setting process to the recording / reproducing apparatus Y through the CEC interface 2xb.
As described above, in the third example, the control circuit 6 transmits the setting information by the ring recording condition setting process to the recording / reproducing apparatus Y, so that the channel to be subjected to the ring recording and the execution time of the ring recording are set. Instruct.
On the other hand, the control circuit 24 in the recording / reproducing apparatus Y receives the setting information by the ring recording condition setting process from the television receiver X through the CEC interface 25b, and stores the received information in the disk of the HDD 23. At the same time, a ring recording reservation registration process for storing the start time of ring recording included in the received information in a nonvolatile memory (not shown) provided in the sub-MPU 28 is executed.
The processing shown in FIG. 4 is executed after the processing shown above is executed in advance.

The procedure of the third example of the time shift reproduction control in the AV system Z will be described below with reference to the flowchart shown in FIG.
Here, the process shown in FIG. 4 is different only in a part of the process shown in FIG. 2, and therefore, only the part different from the process shown in FIG. In FIG. 4, steps that perform the same processing as the processing shown in FIG. 2 are given the same identification codes (S101 and the like) as in FIG.
As shown in FIG. 4, in the third example, in the processing on the television receiver X side, the processes of steps S102, S104, S11, S114, and S116 in the first example (FIG. 2) are excluded. Yes.
In the third example, in the process on the recording / playback apparatus Y side, the processes in steps S201, S203, S204, and S213 in the first example are replaced with new steps S201 ′, S203 ′, S204 ′, and S213, respectively. It has been replaced with 'processing. Further, the processing in steps S211 and S212 on the recording / reproducing apparatus Y side in the first example is omitted.

In this third example, in the recording / playback apparatus Y in the standby state, the sub-MPU 28 sets a predetermined ring recording start time stored in advance in its nonvolatile memory (not shown) by the ring recording reservation registration process. It is monitored whether or not the time is ahead of time (for example, about 2 minutes before) (S201 ′).
Then, when the sub MPU 28 detects that the current time is a predetermined time before the ring recording start time, the sub MPU 28 executes the processing after the start-up processing (S202) described above.
The control circuit 24 activated by the activation process (S202) determines whether or not the ring recording start time stored in advance in the disk of the HDD 23 by the ring recording reservation registration process is reached in step S203 ′. Monitor.
When it is detected by the control circuit 24 that the current time is the start time of the ring recording, the recording / playback circuit uses the channel recording set in the registration information by the ring recording reservation registration processing. The ring recording process is started (S204 ′).
Further, in step S213 ′, the control circuit 24 monitors whether or not the ring recording reservation registration process has reached the ring recording end time stored in advance in the disk of the HDD 23, and until the end time is reached. The processes in steps S205 to S210 described above are repeated.
When the control circuit 24 detects that the current time is the end time of the ring recording, the sub MPU 28 terminates the ring recording process by the recording / playback circuit 22 through the control circuit 24. After that, by controlling the energization switching circuit 29, a stop process for shifting the recording / playback apparatus Y from the operating state to the standby state is executed (S214), and then the process proceeds to step S201 ′ described above. Let

  The third example shown above is suitable when the user of the television receiver X determines in advance a broadcast program to be subjected to time shift reproduction. For example, when the user desires to perform time-shifted reproduction at any time for a specific broadcast program (so-called back program) different from the broadcast program being watched (that is, the broadcast program of the selected channel), or wants to watch This is suitable when, for example, the user wants to view the broadcast program from the beginning even when the broadcast program can be viewed only from a time later than the broadcast start time.

In the embodiment described above, the television receiver X is an HDMI interface (the CEC interface 25b and the HDMI receiving unit 2xa) as means for communicating with the recording / reproducing apparatus Y and means for inputting a video signal from the recording / reproducing apparatus Y. , 2ya), but another communication interface and video signal input interface are also conceivable as communication means with other devices and video signal input means.
In the above-described embodiment, when the time-shifted playback video is displayed on the video display unit 5 (S108), the time-shifted playback video v1 is displayed together with the video v0 already displayed on the video display unit 5. In the example shown in FIG. 5B, the time-shifted playback video v1 may be switched from the video v0 already displayed on the video display unit 5 and displayed.

  The present invention can be used for a television receiver.

1 is a block diagram illustrating a schematic configuration of an AV system Z including a television receiver X according to an embodiment of the present invention. The flowchart showing the procedure of the 1st example of the time shift reproduction | regeneration control in AV system Z. 10 is a flowchart showing a procedure of a second example of time shift reproduction control in the AV system Z. 10 is a flowchart showing a procedure of a third example of time shift reproduction control in the AV system Z. The figure showing an example of the display screen of the video display part in the television receiver X.

Explanation of symbols

X: Television receiver Y: Recording / reproducing apparatus Z: AV system 21, 21: Tuner 2xa, 2ya: HDMI receiving unit 2xb, 25b: CEC interface 3: Video switching circuit 4: Video processing circuit 5: Video display unit 6, 24: Control circuit 7, 26: Remote control interface circuit 8, 27: Remote control 9, 28: Sub MPU
10: Audio switching circuit 11: Audio processing circuit 12: Amplifier 13: Speakers 14, 29: Energization switching circuit 22: Recording / playback circuit 23: HDD
25a: HDMI transmission unit 40: HDMI cable 41: TMDS line 42: CEC lines S101, S102, ...: Processing procedure (step)

Claims (10)

A video display unit for displaying a video of a broadcast program of a selected channel selected for viewing, a function for performing ring recording of the broadcast program, and time shift reproduction based on ring recording data recorded in the storage means by the ring recording A television receiver comprising communication means for communicating with a recording / playback apparatus having a function to perform, and video signal input means for inputting a video signal from the recording / playback apparatus,
Ring recording instruction means for instructing the recording and reproducing apparatus to perform ring recording of a broadcast program by designating a channel through the communication means;
Time-shift playback instruction means for instructing the recording / playback apparatus through the communication means to perform time-shift playback based on the ring recording data in response to detection of a time-shift playback operation on a predetermined operation unit;
Time-shift playback video for displaying on the video display unit a time-shift playback video based on the video signal of the time-shift playback input from the recording / playback apparatus through the video signal input means in response to an instruction from the time-shift playback instruction means Display control means;
A television receiver, comprising:   Time-shift playback data storage instructing means for instructing the recording / playback apparatus through the communication means to store in the storage means separately from the ring recording data the portion that is subject to time-shift playback in the ring recording data. The television receiver according to claim 1, comprising: Channel selection channel ring recording instruction means for instructing the recording / playback apparatus to perform ring recording of the broadcast program of the channel selection channel in the ring recording instruction means;
Channel change instruction means for instructing the recording / playback apparatus through the communication means to change the channel of the broadcast program to be subjected to the ring recording in response to the change of the channel selection channel;
The television receiver according to claim 1, comprising:   When the energization of the video display unit is started in response to detection of a start operation for a predetermined operation unit, the recording / playback apparatus is instructed through the communication means to shift to an energized state in which the ring recording can be performed. 4. The television receiver according to claim 3, further comprising start instruction means for performing the operation.   5. The television receiver according to claim 4, wherein the channel selection channel ring recording instruction means comprises a start-up ring recording instruction means for instructing ring recording in conjunction with execution of an instruction by the activation instruction means. .   4. The channel selection channel ring recording instruction means according to claim 3, further comprising a ring recording instruction means at the time of start operation detection instructing ring recording in response to detection of a ring recording start operation for a predetermined operation unit. Television receiver. A ring recording condition setting means for setting a channel for ring recording and a recording start time in response to an operation on a predetermined operation unit;
Reservation ring recording instruction means for instructing the recording / playback apparatus to perform ring recording of a broadcast program by designating the channel and recording start time set by the ring recording condition setting means in the ring recording instruction means; ,
The television receiver according to claim 1, comprising:   8. The television receiver according to claim 1, wherein the time-shifted playback video display control means displays the time-shifted playback video together with a video of a broadcast program already displayed on the video display unit. Machine.   The television receiver according to any one of claims 1 to 7, wherein the time-shifted playback video display control means switches the time-shifted playback video from the video that is already displayed on the video display unit.   The television receiver according to claim 1, wherein the communication unit and the video signal input unit perform signal transmission conforming to the HDMI standard.

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