JP4355956B2 - television - Google Patents

Description

  The present invention relates to a television capable of receiving terrestrial digital broadcasting and terrestrial analog broadcasting.

  Currently, both analog broadcasting and digital broadcasting are broadcast on television broadcasting. Therefore, some televisions have a system that can receive both terrestrial digital broadcasts and terrestrial analog broadcasts. However, on July 25, 2011, terrestrial analog broadcasting will be abolished and only terrestrial digital broadcasting will be available.

  In view of the above background, Patent Document 1 discloses a first one-touch tuning key group and a second one-touch tuning key in order to improve the operability by suppressing an increase in the number of keys for tuning in a remote controller. Terrestrial digital broadcasting, BS digital broadcasting, and 110 degree CS by assigning terrestrial analog broadcasting channels to the second one-touch tuning key group and switching modes to the first one-touch tuning key group. A broadcast receiving apparatus is disclosed in which a digital broadcast is assigned and the broadcast assignment can be switched between a first one-touch tuning key group and a second one-touch tuning key group.

In addition, Patent Document 2 includes a flash memory having a simulcast channel table to prevent the viewer from being confused at the start of digital terrestrial broadcasting or after the terrestrial analog broadcasting is stopped. Television broadcasting that performs data update processing to download the modified simulcast channel table data acquired from the digital broadcast signal into the simulcast channel table of the flash memory and update the simulcast channel table data stored in the flash memory to the modified simulcast channel table data A receiving apparatus is disclosed.
JP 2004-363910 A JP 2004-320449 A

  A television that is a system that can receive both terrestrial digital broadcasting and terrestrial analog broadcasting has menu items such as channel settings corresponding to terrestrial digital broadcasting and terrestrial analog broadcasting. However, when analog terrestrial broadcasting ends, these menu items can be selected, but even if selected, the result intended by the user cannot be obtained, and the user may be confused.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a television capable of preventing user confusion when terrestrial analog broadcasting ends.

In order to solve the above-described problem, in the invention according to claim 1 of the present invention, a video signal is input, a display that displays a video corresponding to the video signal on a screen, and a desired terrestrial analog broadcast is received. An analog tuner that extracts an intermediate frequency signal in a frequency band, a digital tuner that receives terrestrial digital broadcasts and extracts an intermediate frequency signal in a desired frequency band, and digitally performs predetermined video signal processing on the analog intermediate frequency signal An analog video signal processing unit that outputs a video signal, a digital video signal processing unit that outputs a digital video signal and date information by performing predetermined video signal processing on a digital intermediate frequency signal, the analog video signal processing unit, and the above A digital video signal is input from the digital video signal processing unit, and scaling processing is performed to correspond to the size of the display. A scaler capable of outputting a picture-in-picture display video signal, an infrared light receiving circuit that receives an infrared signal expressed by a pulse of a predetermined format and generates a corresponding voltage signal, and A plurality of keys corresponding to channel numbers of terrestrial analog broadcasting one-to-one and an infrared transmission circuit for transmitting the infrared signal to the infrared light receiving circuit, and infrared signals corresponding to the operation of the plurality of keys are predetermined. A remote controller for sending in the above format, a microcomputer for controlling the display, the analog tuner, the digital tuner, the analog video signal processing unit, the digital video signal processing unit, and the scaler based on the date information and the voltage signal, and terrestrial analog broadcasting And an EEPROM in which end date information is stored. The microcomputer acquires the date information from the date information included in the PSI signal of the terrestrial digital broadcast, acquires the end date information at which the terrestrial analog broadcast is terminated from the EEPROM, and compares it with the date information. When the date information exceeds the end date information, the operation item for setting the channel of the terrestrial analog broadcast displayed on the menu screen is deleted, and the fact that the terrestrial analog broadcast is terminated is displayed on the screen. A function relating to digital terrestrial broadcasting can be assigned to the plurality of keys .

In order to achieve the above object, the television of the present invention receives terrestrial analog broadcasts and terrestrial digital broadcasts, displays images corresponding to the respective broadcasts on the screen, and sets terrestrial analog broadcast channel settings and In a television that displays a menu screen for setting a channel for terrestrial digital broadcasting, date acquisition means for acquiring date information, date comparison means for comparing end date information for terrestrial analog broadcast termination with the date information, When the date information exceeds the end date information, it is configured to include menu changing means for changing the display of the menu screen for setting the channel of the terrestrial analog broadcast.
In the television configured as described above, the date acquisition unit acquires date information, the date comparison unit compares the date information with the end date information when the terrestrial analog broadcast is terminated, and the date information is When the end date information is exceeded, the menu changing means changes the display of the menu screen for setting the channel of the terrestrial analog broadcast.

The television may include a timer unit that holds a date and time, and the date acquisition unit may acquire the date information from the timer unit.

Further, in the television, the date obtaining means may obtain the date information from the date information included in the digital terrestrial broadcasting.

Further, in the television, the menu changing means may be configured to display on the screen that the terrestrial analog broadcast has ended when the display of the menu screen is changed.

The television further includes operation input means having a plurality of operation input terminals corresponding one-to-one with the analog broadcast channel number, and when the display of the menu screen is changed, the operation input terminals are connected to the ground. It is good also as a structure which can allocate the function regarding digital broadcasting.

In addition, in the television, when the date information exceeds the end date information, the menu changing means indicates that the analog broadcast has ended on the screen instead of the menu screen for setting the analog broadcast channel. It is good also as a structure to display.

In the television, the menu changing unit may delete the menu screen for setting the channel of the analog broadcast when the date information exceeds the end date information.

As described above, according to the present invention, the processing related to the menu related to terrestrial analog broadcasting is not performed, so that the operability of the television is improved, and functions that become unnecessary when the terrestrial analog broadcasting ends are not displayed. A television capable of avoiding claims can be provided.
In addition, when the display of the menu screen is changed, the fact that the terrestrial analog broadcasting has ended is displayed on the screen, so that the user is notified that the menu screen has been changed, and the convenience of the user is improved and the user complaint Can be avoided.

According to the invention of claim 3, since the date is acquired from the timer held inside, the date information can be acquired regardless of the radio wave condition.
According to the fourth aspect of the present invention, since the date information is acquired from the date information of terrestrial digital broadcasting, it is possible to acquire accurate date information .
According to the fifth aspect of the present invention, it is possible to improve user convenience by assigning a function related to terrestrial digital broadcasting to an operation input terminal for terrestrial analog broadcasting which becomes unnecessary after terrestrial analog broadcasting ends. It becomes possible.
And according to the invention concerning Claim 6 , in order to display that the terrestrial analog broadcast was completed on the said screen before changing the display of the said menu screen, after notifying a user that the terrestrial analog broadcast was complete | finished The menu screen is changed, so that convenience for the user is improved and user complaints can be avoided.

Further, according to the invention of claim 7 , by not performing the process related to the menu related to the terrestrial analog broadcast, the operability of the television is improved, and the function which becomes unnecessary when the terrestrial analog broadcast ends is not displayed, and the user A television capable of avoiding claims can be provided.
Furthermore, it is needless to say that in a more specific configuration as in claim 1, the same effects as those of the inventions of claims 2 to 7 described above are exhibited.

Hereinafter, embodiments of the present invention will be described in the following order.
(1) General configuration of television:
(2) Microcomputer processing for changing menu items:
(3) Summary:

(1) General configuration of television:
FIG. 1 is a block diagram showing a television 110 according to the present invention.
The television 110 includes a television main body 100 and a remote controller 60. The television main body 100 generally includes an analog tuner 10, a digital tuner 15, an external input terminal 20, a first analog video signal processing unit 25, a second analog video signal processing unit 35, and digital video signal processing. The unit 30, the scaler 40, the VRAM 45, the EEPROM 53, the driver 55, the display 70, and a component such as the microcomputer 50.

  The microcomputer 50 controls driving of the entire television main body 100, and an oscillation circuit (CLK) 52 and an infrared light receiving circuit 51 are directly connected to each other. It is electrically connected to each component. That is, in the microcomputer 50, the CPU controls the driving of the television 100 based on the program and data stored in the ROM with the RAM as a work area. The infrared light receiving circuit 51 receives an infrared signal expressed by a pulse of a predetermined format, generates a corresponding voltage signal based on the received infrared signal, and outputs it to the microcomputer 5. The microcomputer 50 receives the voltage signal and performs corresponding various controls.

  Further, the microcomputer 50 holds the set date and time information based on the oscillation of the oscillation circuit 52. Therefore, the microcomputer 50 and the oscillation circuit 52 constitute timer means for holding the date and time.

  The analog tuner 10 has a so-called synthesizer configuration. The analog tuner 10 is supplied with PLL data as a channel selection control signal, that is, data of the frequency division ratio of the variable frequency dividing circuit in the PLL loop. The analog tuner 10 receives transmission of PLL data as a channel selection control signal from the microcomputer 50, and receives an intermediate signal in the desired frequency band from any one of the broadcast signals corresponding to each channel of the terrestrial analog broadcast received via the antenna 10a. By extracting the frequency signal (IF), one channel is selected from a plurality of channels.

  The microcomputer 50 receives the channel switching instruction signal transmitted by the user with the remote controller 60 or the like via the infrared light receiving circuit, thereby recognizing the channel to be selected at that time, and receiving the television broadcast signal of the selected channel. A channel selection control signal for reception is transmitted to the analog tuner 10.

  The intermediate frequency signal output from the analog tuner 10 is supplied to the analog video signal processing unit 25. The analog video signal processing unit 25 includes an amplification unit, a demodulation unit, and an NTSC decoder. The amplifying unit amplifies the gain of the supplied intermediate frequency signal to a predetermined level under a predetermined feedback control, and the demodulating unit separates the amplified intermediate frequency signal to obtain an analog video in NTSC format. A signal and an analog audio signal are generated. The generated analog video signal is input to an NTSC decoder and converted to a digital video signal by the NTSC decoder. The NTSC format is a standard format for analog television signals, and includes a signal for reproducing colors, a horizontal synchronizing signal of 15.75 kHz, a vertical synchronizing signal of 60 Hz, and the like. The demodulator is provided with a sync separation circuit for extracting a horizontal sync signal and a vertical sync signal, and the NTSC decoder can be synchronized based on the horizontal sync signal and the vertical sync signal extracted by the sync separator circuit. Generate a digital video signal. The first video signal generated by the NTSC decoder is output to the scaler 40. The analog audio signal separated by the demodulator is supplied to a speaker (not shown).

  The digital tuner 15 extracts the intermediate frequency signal of the terrestrial digital broadcast signal corresponding to each channel received via the antenna 15 a based on the channel selection control signal transmitted from the microcomputer 50, and sends it to the digital video signal processing unit 30. Supplied.

  The digital video signal processing unit 30 includes a digital I / F, a demodulation unit, a descrambling unit, a demultiplexing unit, and an MPEG decoder. The digital I / F to which the intermediate frequency signal is input has an A / D converter, and the demodulator that receives the signal from the digital I / F has a channel equalizer, an error correction decoder, and the like. That is, the digital I / F and the demodulating unit convert the input intermediate frequency signal into a digital signal and perform so-called ghost cancellation on the digitally demodulated signal based on the control information from the microcomputer 50. Further, the digital I / F and the demodulator correct a bit error generated on the transmission path to obtain a transport stream (TS) signal.

  Since the TS signal is normally scrambled, video and audio cannot be properly reproduced as it is. Therefore, the descrambling unit performs descrambling processing on the TS signal, thereby restoring the TS signal to a reproducible data array. The descrambled TS signal has a format in which video signals, audio signals, character information, and the like are multiplexed, and is supplied to the demultiplexing unit. The demultiplex unit performs demultiplex processing on the input data. That is, multiplexing is released here.

  When demultiplexing is canceled by the demultiplexing process, MPEG data in which service information such as video signals, audio signals, and PSI is compressed by a predetermined method is obtained. The MPEG data is supplied to the MPEG decoder, and compression / decompression processing, that is, MPEG decoding processing is performed by the MPEG decoder. Through this MPEG decoding process, a digital video signal, a digital audio signal, and service information (PSI: Program Specific Information, SI: Service Information, etc.) are generated. The digital video signal is output to the scaler 40. On the other hand, the digital audio signal is converted into an analog audio signal by a predetermined D / A converter, and the analog audio signal is output to a speaker (not shown). Furthermore, service information is appropriately acquired according to the control of the microcomputer 50 and output to the microcomputer 50. The service information includes a table for transmitting date and time information such as TDT (Time and Date Table).

  The external input terminal 20 is a video signal input terminal such as a composite video signal input terminal. The video signal input from the external input terminal 20 is supplied to the analog video signal processing unit 35 and performs the same processing as the analog video signal processing unit 25 to generate a digital video signal and a digital audio signal. The digital video signal is output to the scaler 40. The analog audio signal is supplied to a speaker (not shown).

  The scaler 40 is a digital video signal of any one of the digital video signals input from the analog video signal processing unit 25, the digital video signal processing unit 30, and the analog video signal processing unit 35 according to the control of the microcomputer 50. Alternatively, any two systems of digital video signals are selected and received, and scaling processing is performed so as to correspond to the size of the display 70 while using the VRAM 45 as a work area and output. Specifically, the scaler 40 divides the digital video signal into the number of pixels corresponding to the aspect ratio of the display 70. When performing so-called PinP display (picture-in-picture display), which accepts two digital video signals and displays two screens at the same time, in addition to the above scaling process, the video signal displayed as a sub-screen is displayed. The compressed video signal is compressed into a predetermined image size, and the compressed video signal is combined with a part of the video signal displayed as the main screen and output.

  The OSD processing unit 42 receives data such as character information from the microcomputer 50 under the control of the microcomputer 50 and generates a still image based on the data such as the character information. Then, by superimposing the still image on the video signal as an OSD signal for OSD (on-screen display) display, the predetermined still image is superimposed on the video, or the predetermined still image is replaced and displayed. Processing can be performed.

  The display 70 is configured by arranging pixels for displaying RGB gradations in a matrix having a predetermined aspect ratio. The driver 55 generates a driving voltage having a predetermined voltage value based on the RGB signals divided by the scaler 40, and outputs the driving voltage to each pixel, thereby causing the display 70 to display an image.

  The remote controller 60 has a plurality of keys for accepting operations and an infrared transmission circuit for transmitting the infrared signals to the infrared light receiving circuit, and transmits infrared signals according to the operations of the plurality of keys in a predetermined format. . For example, when an operation is performed to receive a desired channel using the remote controller 60 illustrated in FIG. 2, a corresponding infrared signal is transmitted from the infrared transmission unit 65. The microcomputer 50 receives the infrared signal via the infrared light receiving circuit, and sends the frequency data to the analog tuner 10 or the digital tuner 15 so as to receive the corresponding channel.

An example of the remote controller 60 is shown in FIG. The remote controller 60 includes a power key 66, an analog channel key (analog numeric keypad) 63a for selecting a terrestrial analog broadcast channel, a digital channel key (analog numeric keypad) 63d for selecting a digital terrestrial broadcast channel, volume control keys 62a and 62b, and up and down Left / right cursor movement keys 61a, 61b, 61c, 61d, a cursor selection key 61e, a menu key 64, a two-screen key 67, and the like are provided. When the two-screen key 67 is depressed, an infrared signal corresponding to the depression operation is transmitted, and the microcomputer receives a voltage signal corresponding to the infrared signal, and a control signal for switching between two-screen display and one-screen display is scaled. Output to 40.
That is, the remote controller 60 constitutes an operation input means, and the analog channel key 63a corresponds to a plurality of operation input terminals corresponding one-to-one with the channel number of analog broadcasting.

  FIG. 3 shows an example of operation items hierarchized in a predetermined hierarchical structure. When the menu key 64 of the remote controller 60 is pressed down, the main menu that is initially displayed on the television screen includes “image quality”, “sound quality”, and “analog channel setting” which are operation items roughly classified into operation items. "," Digital channel setting ", etc. menu blocks are displayed. Next, when the operation items classified broadly are selected and input with the remote controller 60, a menu block of a submenu is displayed on the screen. For example, when “Analog channel setting” is selected and input in the main menu, operation items such as “return”, “auto setting”, “channel 1”, “channel 2” are displayed in the submenu.

(2) Microcomputer processing for changing menu operation items:
With reference to FIG. 4, the process of the microcomputer 50 which changes the operation item of a menu is demonstrated. In the figure, the processing of the microcomputer 50 is described in a flowchart. This process is repeatedly executed until the process of step S16 is executed while the television is turned on. When the process of step S16 is executed and the process ends, the process is not executed thereafter.

When the process is started, time data is acquired in step S10. The time data may be date information held in the television 100 or time data included in a PSI signal of digital terrestrial broadcasting.
As described above, the microcomputer 50 that executes the processing of step S10 constitutes date acquisition means for acquiring the date information from the timer means or date acquisition means for acquiring the date information from the date information included in the terrestrial digital broadcast. .

In step S12, the information indicating the scheduled date of terrestrial analog broadcasting to be stored in advance in the EEPROM 53 (scheduled for July 25, 2005 when filing this application) is compared with the date information acquired in step S10, and the date It is determined whether or not the information has passed the scheduled terrestrial broadcast end date (hereinafter referred to as the end date). If the date information has passed the scheduled date, the condition is satisfied and the process proceeds to step S14. If the date information has not passed the scheduled date, the condition is not satisfied and the process is terminated.
As described above, the microcomputer 50 that executes the process of step S12 constitutes date comparison means that compares the date information with the end date information when the terrestrial analog broadcast is terminated.

  When the condition is satisfied in step S12 and the process proceeds to step S14, the menu operation item displayed when the menu key 64 is pressed down and the submenu operation item are changed. The items to be changed are operation items used only for the setting of reception and viewing of analog broadcasting. Taking FIG. 3 as an example, it is assumed that “analog channel setting” in the main menu and its submenu are targets, and these operation items are registered in advance in the processing as targets to be changed.

  The content of the change may be deletion of the target operation item or non-display. That is, it is only necessary to prevent the user from being confused by making it impossible for the user to select operation items used only for terrestrial analog broadcasting after the end date. Specifically, the channel setting for analog broadcasting is not displayed, or the terrestrial analog broadcasting cannot be selected with the two-screen display function. Further, another function may be assigned to the analog channel key 63a, and an operation item for assigning another function to the analog channel key 63a may be displayed in the submenu.

In step S16, the fact that the analog broadcast has ended is displayed on the screen, and the process ends. In other words, the microcomputer 50 outputs message information such as character information indicating that the analog broadcasting has ended to the OSD generation unit 42, and the OSD generation unit 42 generates an OSD signal based on the message information and is supplied from the scaler 40. The message information is displayed on the display 70 by being superimposed on the video signal.
As described above, the microcomputer 50 that executes the processes of steps S14 to S16, when the date information exceeds the end date information, changes the menu screen for changing the menu screen for setting the analog broadcast channel, and the menu screen. When the display is changed, menu change means for displaying that the analog broadcast is terminated on the screen, and when the display on the menu screen is changed, the menu is changed to assign functions related to digital terrestrial broadcasting to the plurality of operation input terminals. Means.

  By the way, the operation item change of the menu may be realized by a process performed in two stages as shown in FIGS. The process of FIG. 5 is repeatedly executed while the television is turned on until the process of step S26 is executed. When the process of step S26 is executed and the process ends, the process is not executed thereafter. 6 is executed when any operation item is selected and input on the menu screen after the process of step S26 of FIG. 5 is executed, and any of the processes until the process of step S34 is executed. This is executed every time an operation item is selected and input, and when the process of step S34 is executed and the process ends, the operation item is not executed thereafter.

When the process is started, time data is acquired in step S20. The time data may be date information held in the television 100 as in step S10 of FIG. 4, or may be time data included in a PSI signal of digital terrestrial broadcasting.
As described above, the microcomputer 50 that executes the process of step S20 constitutes date acquisition means for acquiring the date information from the timer means or date acquisition means for acquiring the date information from the date information included in the terrestrial digital broadcast. .

In step 24, the information representing the scheduled date for terrestrial analog broadcasting to be completed (previously scheduled for July 25, 2005) preset in the EEPROM 53 is compared with the date information acquired in step S20. It is determined whether or not the information has passed the scheduled terrestrial broadcast end date (hereinafter referred to as the end date). If the date information has passed the scheduled date, the condition is satisfied and the process proceeds to step S26. If the date information has not passed the scheduled date, the condition is not satisfied and the process is terminated.
As described above, the microcomputer 50 that executes the process of step S24 constitutes date comparison means that compares the date information with the end date information when the terrestrial analog broadcast is terminated.

  When the condition is satisfied in step S24 and the process proceeds to step S26, the menu operation item displayed when the menu key 64 is pressed down and the submenu operation item are changed, and the process ends. Specifically, the process of FIG. 6 is executed when any operation item is selected and input from the menu.

  Then, when any operation item is selected and input on the menu screen, the process of FIG. 6 is executed, and in step S30, the operation item selected and input is used in advance only for the setting of reception and viewing of the analog broadcast. It is determined whether or not it is registered in the process as an operation item. If it is registered, the condition is satisfied and the process proceeds to step S32. If not registered, the condition is not satisfied and the process proceeds to step S34 and the process is terminated.

When the condition is satisfied in step S30 and the process proceeds to step S32, the display indicating that the analog broadcast has ended is displayed as an OSD, and the operation item used only for setting the reception and viewing of the analog broadcast is deleted or invisible in step S34. The process ends. Therefore, thereafter, the operation items used only for the setting of reception and viewing of the analog broadcast are not displayed, and it is possible to notify the user that the analog broadcast has ended and to prevent the user from being confused. The specific change contents are the same as in step 14 of FIG.
As described above, when the date information exceeds the end date information, the microcomputer 50 that executes the processes of steps S26 and S20 to S34 displays the analog broadcast on the screen instead of the menu screen for setting the analog broadcast channel. When the menu change means for displaying the end, the menu change means for deleting the menu screen for setting the analog broadcast channel when the date information exceeds the end date information, and the display of the menu screen are changed. And menu change means for assigning functions related to digital terrestrial broadcasting to the plurality of operation input terminals.

(3) Summary:
That is, the microcomputer 50 acquires date information from the PSI signal of the terrestrial digital broadcast, acquires end date information for ending the terrestrial analog broadcast from the EEPROM 53, compares it with the date information, and the date information is the end date information. Is exceeded, the operation item for setting the channel of the terrestrial analog broadcast displayed on the menu screen is deleted, the fact that the terrestrial analog broadcast has ended is displayed on the screen, and the terrestrial digital broadcast is displayed on the analog channel key 63a of the remote controller 60. Functions related to can be assigned.

As described above, in the lutein revision to respond to this embodiment, it receives the terrestrial analog broadcasting and terrestrial digital broadcasting, and displays an image corresponding to each of the broadcast on the screen, the channel setting of the terrestrial analog broadcasting and In a television that displays a menu screen for channel setting of terrestrial digital broadcasting, date acquisition means for acquiring date information, date comparison means for comparing the date information with the end date information for ending terrestrial analog broadcasting, When the date information exceeds the end date information, it is configured to include menu changing means for changing the display of the menu screen for setting the channel of the terrestrial analog broadcast.
That is, when the date acquisition means acquires date information, the date comparison means compares the date information with the end date information when the terrestrial analog broadcast is ended, and the date information exceeds the end date information, The menu changing means changes the display of the menu screen for setting the channel of the terrestrial analog broadcast.
In the television configured as described above, the processing related to the menu related to terrestrial analog broadcasting is not performed, so that the operability of the television is improved and unnecessary functions are not displayed when the terrestrial analog broadcasting is terminated. A television capable of avoiding claims can be provided.

The television may include a timer unit that holds a date and time, and the date acquisition unit may acquire the date information from the timer unit.
According to this configuration, since the date is acquired from the timer held inside, the date information can be acquired regardless of the radio wave condition.

Further, in the television, the date obtaining means may obtain the date information from the date information included in the digital terrestrial broadcasting.
According to this configuration, since the date information is acquired from the date information of terrestrial digital broadcasting, accurate date information can be acquired.

Further, in the television, the menu changing means may be configured to display on the screen that the terrestrial analog broadcast has ended when the display of the menu screen is changed.
According to this configuration, when the display of the menu screen is changed, the fact that the terrestrial analog broadcast has been completed is displayed on the screen, so that the user is notified that the menu screen has been changed, and the convenience of the user is improved. And avoiding user complaints.

The television further includes operation input means having a plurality of operation input terminals corresponding one-to-one with the analog broadcast channel number, and when the display of the menu screen is changed, the operation input terminals are connected to the ground. It is good also as a structure which can allocate the function regarding digital broadcasting.
According to this configuration, it is possible to improve user convenience by assigning a function related to terrestrial digital broadcasting to an operation input terminal for terrestrial analog broadcasting that becomes unnecessary after terrestrial analog broadcasting ends.

In addition, in the television, when the date information exceeds the end date information, the menu changing means indicates that the analog broadcast has ended on the screen instead of the menu screen for setting the analog broadcast channel. It is good also as a structure to display.
According to this configuration, before the display of the menu screen is changed, the fact that the terrestrial analog broadcast has ended is displayed on the screen, so the menu screen is changed after notifying the user that the terrestrial analog broadcast has ended. As a result, user convenience is improved and user complaints can be avoided.

In the television, the menu changing unit may delete the menu screen for setting the channel of the analog broadcast when the date information exceeds the end date information.
According to this configuration, by not performing processing related to menus related to terrestrial analog broadcasting, the operability of the television is improved and unnecessary functions are not displayed when terrestrial analog broadcasting ends, and user complaints can be avoided. TV can be provided.

Based on the above configuration, as a more specific configuration example, a video signal is input, a display that displays video corresponding to the video signal on the screen, and a desired frequency band by receiving terrestrial analog broadcasting An analog tuner that extracts the intermediate frequency signal, a digital tuner that receives the terrestrial digital broadcast and extracts the intermediate frequency signal in the desired frequency band, and a digital video signal that performs predetermined video signal processing on the analog intermediate frequency signal An analog video signal processing unit that outputs a digital video signal and date information by performing predetermined video signal processing on a digital intermediate frequency signal, the analog video signal processing unit, and the digital video A digital video signal is input from the signal processing unit, and scaling processing is performed so as to correspond to the size of the display. Both a scaler capable of outputting a picture-in-picture display video signal, an infrared light receiving circuit that receives an infrared signal expressed by a pulse in a predetermined format and generates a corresponding voltage signal, and the above-mentioned ground analog A plurality of keys corresponding to broadcast channel numbers on a one-to-one basis, and an infrared transmission circuit that transmits the infrared signal to the infrared light receiving circuit, and the infrared signal corresponding to the operation of the plurality of keys is in a predetermined format The remote controller that sends out, the microcomputer that controls the display, the analog tuner, the digital tuner, the analog video signal processing unit, the digital video signal processing unit, and the scaler based on the date information and the voltage signal, and the terrestrial analog broadcasting are finished In a television provided with an EEPROM in which end date information is stored. The microcomputer obtains the date information from the date information included in the PSI signal of the terrestrial digital broadcast, obtains end date information for ending the terrestrial analog broadcast from the EEPROM, compares it with the date information, and If the date information exceeds the end date information, the operation item for channel setting of the terrestrial analog broadcast displayed on the menu screen is deleted, and the fact that the terrestrial analog broadcast has ended is displayed on the screen. It is good also as a structure which can assign the function regarding digital terrestrial broadcasting to a some key .

Needless to say, the present invention is not limited to the above embodiments. It goes without saying for those skilled in the art,
・ Applying mutually interchangeable members and configurations disclosed in the above embodiments by appropriately changing the combination thereof.− Although not disclosed in the above embodiments, it is a publicly known technique and the above embodiments. The members and configurations that can be mutually replaced with the members and configurations disclosed in the above are appropriately replaced, and the combination is changed and applied. It is an embodiment of the present invention that a person skilled in the art can appropriately replace the members and configurations that can be assumed as substitutes for the members and configurations disclosed in the above-described embodiments, and change the combinations and apply them. It is disclosed as.

It is a schematic block diagram of a television. It is an example of a remote control. It is an example of a menu. It is the flowchart which showed the process of the microcomputer concerning the operation item change of a menu. It is the flowchart which showed the process of the microcomputer concerning the operation item change of a menu. It is the flowchart which showed the process of the microcomputer concerning the operation item change of a menu.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Analog tuner 10a ... Antenna 15 ... Digital tuner 15a ... Antenna 20 ... External input terminal 25 ... Analog video signal processing part 30 ... Digital video signal processing part 35 ... Analog video signal processing part 40 ... Scaler 42 ... OSD processing part 45 ... VRAM
50 ... Microcomputer 51 ... Infrared light receiving circuit 52 ... Oscillation circuit 53 ... EEPROM
55 ... Driver 60 ... Remote control 70 ... Display 100 ... Television body 110 ... Television 61a, 61b, 61c, 61d ... Cursor movement key 61e ... Cursor selection key 62a, 62b ... Volume adjustment key 63a ... Analog channel key (analog numeric keypad)
63b ... Digital channel key (digital numeric keypad)
64 ... Menu key 65 ... Infrared transmitter 66 ... Power key 67 ... Double screen key

Claims (7)

A display that receives a video signal and displays a video corresponding to the video signal on a screen;
An analog tuner that receives terrestrial analog broadcasting and extracts an intermediate frequency signal in a desired frequency band; and
A digital tuner that receives terrestrial digital broadcasting and extracts an intermediate frequency signal in a desired frequency band; and
An analog video signal processing unit that performs predetermined video signal processing on an analog intermediate frequency signal and outputs a digital video signal;
A digital video signal processing unit that performs predetermined video signal processing on the digital intermediate frequency signal and outputs the digital video signal and date information;
A digital video signal is input from the analog video signal processing unit and the digital video signal processing unit to perform scaling processing corresponding to the size of the display and to output a picture-in-picture display video signal. Possible scaler,
An infrared light receiving circuit that receives an infrared signal expressed in pulses of a predetermined format and generates a corresponding voltage signal;
A plurality of keys corresponding to the channel numbers of the terrestrial analog broadcasting, and an infrared transmission circuit that transmits the infrared signal to the infrared light receiving circuit, and an infrared signal corresponding to the operation of the plurality of keys. A remote control that sends in a predetermined format;
A microcomputer that controls the display, the analog tuner, the digital tuner, the analog video signal processing unit, the digital video signal processing unit, and the scaler based on the date information and the voltage signal;
EEPROM in which end date information for terrestrial analog broadcasting is stored;
In a television with
The above microcomputer
The date information is acquired from the date information included in the PSI signal of the terrestrial digital broadcast,
Obtaining end date information for terrestrial analog broadcast termination from the EEPROM and comparing it with the date information,
If the date information exceeds the end date information,
Delete the operation item for channel setting of the above terrestrial analog broadcast displayed on the menu screen,
Display on the screen that the terrestrial analog broadcast has ended,
A television characterized in that a function relating to terrestrial digital broadcasting can be assigned to the plurality of keys . In a television that receives a terrestrial analog broadcast and a terrestrial digital broadcast, displays a video corresponding to each broadcast on the screen, and displays a menu screen for setting a channel for terrestrial analog broadcast and a channel for terrestrial digital broadcast.
Date acquisition means for acquiring date information;
Date comparison means for comparing the end date information and the above date information when the terrestrial analog broadcasting is terminated;
When the date information exceeds the end date information, a menu change means for changing the display of the menu screen for setting the channel of the terrestrial analog broadcast and displaying that the terrestrial analog broadcast has ended on the screen is provided. A television characterized by Timer means for holding the date and time,
The date acquisition means is
The television according to claim 2, wherein the date information is acquired from the timer means. The date acquisition means is
4. The television according to claim 2, wherein the date information is obtained from date information included in the terrestrial digital broadcast. Comprising an operation input means comprising a plurality of operation input terminals corresponding one-to-one with the channel number of analog broadcasting;
When the display of the menu screen is changed,
Television according to any one of the claims 2 to 4, characterized in that to enable allocation functions relating terrestrial digital broadcasting to the plurality of operation input. The menu change means is
When the date information exceeds the end date information, the fact that the analog broadcast has ended is displayed on the screen instead of the menu screen for setting the analog broadcast channel. television according to any one of claim 5. The menu change means is
When the date information is more than the end date information, television according to any one of the claims 2 to 6, characterized in that to remove a menu screen for channel setting of the analog broadcast.

Images