JP2008278113A - Video/voice recording device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a video/voice recording device for improving convenience by making it possible for a user to quickly find out his target title. <P>SOLUTION: When each frame when the volume level of a broadcast program is made maximum in each predetermined period during the recording of a broadcast program in a hard disk is acquired by a recording part 10, and a title list display operation is performed, an OSD video signal is created by a signal processing part 5, and the reduced image of each frame acquired by the storage part 10 about each title is successively displayed on a television so that the previous display can be updated according to the output of a video D/A conversion part 7. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention relates to a video / audio recording apparatus.

Some conventional hard disk recorders have a title list display function for displaying a list of title names of titles recorded on the hard disk. When the title name is selected by the user in the title list display, the reproduction of the title with the selected title name is started.

However, there are cases where it is difficult to grasp the contents of the title when only the title name is displayed, so a hard disk recorder that has a title list display function that displays a reduced image (so-called thumbnail) of each title in addition to each title name also appears. is doing.

When a title is displayed on such a hard disk recorder, the initial screen is displayed as shown in FIG. 5A. In this case, each title name is displayed, and the title initially selected by the highlight 100 is displayed. The reduced image is displayed as a moving image, and for the other titles, the first frame of each title is displayed as a still image. Then, when another title is selected by highlight 100 as shown in FIG. 5B by the user operation, a reduced image displayed at the end of the moving image display is displayed as a still image for the title that has been selected so far. The moving image of the reduced image is displayed for the newly selected title. Thereafter, the same operation is performed every time another title is selected. When the user performs a decision operation with the title selected, the selected title is played back.

According to such a hard disk recorder, the user can find out the target title by confirming the contents of each title by moving image display in the title list display.
JP 2004-260521 A

However, in the above conventional hard disk recorder, it is necessary for the user to repeat the process of selecting the title, displaying the movie, and confirming the content of the title, so that it takes time to find the target title. there were.

  Further, in Patent Document 1, when displaying a candidate image representing a candidate position for editing moving image data, in addition to a thumbnail representing a candidate position, character string data relating to a scene including the thumbnail is included. A moving image editing apparatus is disclosed in which a moving image editor can easily understand a candidate position represented in the candidate image. However, such a moving image editing apparatus is disclosed above. However, this does not solve the problem in the title list display.

  In view of the above problems, an object of the present invention is to provide a video / audio recording apparatus in which a user can quickly find a target title and convenience is improved.

In order to achieve the above object, a video / audio recording apparatus of the present invention is a video / audio recording apparatus for recording a video signal and an audio signal on a recording medium, and a volume level of the audio signal recorded on the recording medium within each predetermined period. A frame acquisition unit for acquiring each frame included in the video signal recorded on the recording medium when the maximum value is obtained, and a reduced image of the frame acquired by the frame acquisition unit for each title is updated with the previous display. Display signal output means for outputting a display signal for sequentially displaying on the display means.

  According to such a configuration, a frame when the volume level becomes maximum within a predetermined period, that is, a reduced image of an image estimated to be a characteristic scene is sequentially displayed in parallel in time for each title. The user can grasp the contents of each title at once, and can quickly find the target title.

  In the video / audio recording apparatus according to the present invention, it is preferable that, in the above configuration, the frame acquisition unit acquires each frame during recording of the video signal and the audio signal on the recording medium.

  According to such a configuration, since the frame is acquired during recording, the processing time can be made efficient.

The video / audio recording apparatus according to the present invention is preferably configured such that, in the above configuration, the predetermined period can be changed by operating means.

According to such a configuration, the number of acquired frames can be changed, the number of reduced images can be increased, and a characteristic screen can be easily displayed, and the user can find a target title more quickly. it can.

In the above configuration, the display signal is displayed on the display unit sequentially for each title, for example, a reduced image of each frame acquired by the frame acquisition unit for each title, and then displayed first. A display signal for repeatedly displaying the reduced image of each frame acquired by the frame acquisition unit next to each frame in the same order as the previous display in order to update the previous display. I just need it.

According to the video / audio recording apparatus of the present invention, the user can grasp the contents of each title at a time and can quickly find out the target title, so that convenience is improved.

Embodiments of the present invention will be described below with reference to the drawings, taking a hard disk recorder as an example.

FIG. 1 shows a schematic configuration diagram of a hard disk recorder according to the present invention. As shown in FIG. 1, a hard disk recorder according to the present invention includes a tuner 2, an audio A / D converter 3, a video A / D converter 4, a signal processor 5, and an audio D / A converter 6. A video D / A conversion unit 7, a control unit 8, an HDD (hard disk drive) 9, a storage unit 10, and a remote control reception unit 11. An antenna 1 is connected to the tuner 2, and a television (not shown) is connected to the audio D / A converter 6 and the video D / A converter 7.

The antenna 1 receives the broadcast radio wave, converts the broadcast radio wave into a high frequency signal, and outputs it to the tuner 2. The tuner 2 extracts a signal having a desired frequency from the high-frequency signal input from the antenna 1, extracts an audio signal and a video signal from the extracted signal, outputs the audio signal to the audio A / D converter 3, and outputs the video signal Is output to the video A / D converter 4. The audio A / D conversion unit 3 performs A / D conversion on the audio signal input from the tuner 2 and outputs it to the signal processing unit 5. The video A / D converter 4 performs A / D conversion on the video signal input from the tuner 2 and outputs it to the signal processor 5.

The signal processing unit 5 includes an encoding unit (not shown), and compresses and encodes the audio signal input from the audio A / D conversion unit 3 and the video signal input from the video A / D conversion unit 4. The signal processing unit 5 also includes a decoding unit (not shown), and also performs decompression decoding of the video signal and audio signal reproduced by the HDD 9. Further, the signal processing unit 5 includes an OSD (On Screen Display) unit (not shown), and also generates an OSD video signal. Further, the signal processing unit 5 through-outputs the audio signal input from the audio A / D conversion unit 3 to the audio D / A conversion unit 6, and outputs the video signal input from the video A / D conversion unit 4 to the video D Through output to the / A converter 7 is also performed.

The audio D / A converter 6 performs D / A conversion on the decompressed and decoded audio signal input from the signal processor 5 and the through-output audio signal, and outputs the result to a television (not shown). As a result, various sounds are emitted from the television. The video D / A converter 7 D / A converts the decompressed and decoded video signal, the through output video signal, and the OSD video signal input from the signal processor 5 and outputs them to a television (not shown). . Thereby, various images are displayed on the television.

The HDD 9 has a built-in hard disk and records the video signal and audio signal compressed and encoded by the signal processing unit 5 on the hard disk. The HDD 9 reproduces the video signal and the audio signal that are compression-coded from the hard disk.

The storage unit 10 stores frames used for title list display as will be described later, and may be configured by, for example, a nonvolatile memory. The remote control receiver 11 receives an infrared signal from a remote controller (not shown) and outputs a code signal corresponding to the remote control operation.

Next, the operation at the time of recording in the hard disk recorder according to the present invention will be described.

When a recording start operation is performed with a remote controller (not shown), the signal processing unit 5 compresses and encodes the audio signal input from the audio A / D conversion unit 3 and the video signal input from the video A / D conversion unit 4. The HDD 9 starts recording the compression-coded video signal and audio signal on the hard disk. When the recording start operation is performed, the operation of the flowchart shown in FIG. 2 is also started. During recording, the signal processing unit 5 through-outputs the input from the audio A / D conversion unit 3 to the audio D / A conversion unit 6 and converts the input from the video A / D conversion unit 4 to video D / A conversion. Through output to unit 7.

First, in step S1, the control unit 8 initializes a variable n to 0. In step S2, the control unit 8 initializes a variable MAX_vol to 0.

Next, in step S3, the control unit 8 determines whether or not the product of the variable n and the variable Ts is larger than the variable Tw. Here, the variable Ts is a sample period of the volume level, and is an arbitrary fixed value. The variable Tw is a predetermined period and may be a fixed value, but it is desirable that the variable Tw can be changed by operating a remote controller (not shown). In this case, for example, when the value of the variable Tw is selected by the remote control operation on the setting screen displayed on the television (not shown) by the remote control operation, and the determination operation is performed by the remote control, the variable Tw is set to the selected value. It only has to be updated.

If it is determined in step S3 that the product of the variable n and the variable Ts is equal to or less than the variable Tw (N in step S3), the process proceeds to step S4. In step S4, the control unit 8 substitutes the volume level detected based on the audio signal output of the audio D / A conversion unit 6 into the variable vol [nTs]. The volume level acquisition in step S4 is performed in the cycle of the variable Ts.

In step S5, the control unit 8 determines whether or not the variable MAX_vol is smaller than the variable vol [nTs]. If the variable MAX_vol is smaller than the variable vol [nTs] (Y in Step S5), the process proceeds to Step S6, and the control unit 8 updates the variable MAX_vol to the value of the variable vol [nTs]. In step S7, the control unit 8 stores the through-output frame from the signal processing unit 5 in the storage unit 10, and proceeds to step S8. In the second and subsequent steps S7, a new frame is overwritten on the frame currently stored in the storage unit 10.

If the variable MAX_vol is greater than or equal to the variable vol [nTs] in step S5 (N in step S5), the process proceeds to step S8 without passing through steps S6 and S7. In step S8, the control unit 8 increases the variable n by 1. After step S8, the process returns to step S3.

If it is determined in step S3 that the product of the variable n and the variable Ts is larger than the variable Tw (Y in step S3), the flowchart of FIG. 2 ends. Thereafter, the operation of the flowchart of FIG. 2 is repeated until a recording stop operation is performed with a remote controller (not shown).

With the above operation, when the recording is completed, the hard disk of the HDD 9 is in a state in which the title is recorded, and the storage unit 10 stores each frame when the volume level becomes maximum within each predetermined period of the variable Tw. Is stored. For example, when the volume level changes with time as shown in FIG. 3, each frame at the time of the x mark in FIG. 3 is stored in the storage unit 10 when the recording is completed.

Next, the title list display operation in the hard disk recorder according to the present invention will be described.

Here, a plurality of recordings are performed in advance, and the hard disk of the HDD 9 is in a state where a plurality of titles are recorded, and the storage unit 10 is in a state where a plurality of frames are stored for each title. When a title list display operation is performed on a remote controller (not shown) in such a state, the signal processing unit 5 generates an OSD video signal based on each frame stored in the storage unit 10 and sends it to the video D / A conversion unit 7. Output. Thereby, a title is displayed on a television (not shown).

FIG. 4 is a diagram showing a title list display example when six titles are recorded on the hard disk. In the title list display, a reduced image is displayed in addition to the display of each title name. Regarding the display of the reduced image, first, as shown by the solid line arrows in FIG. 4, the most recent frames of the respective titles stored in the storage unit 10 in the order of the upper screen from left to right and then the lower screen from left to right. Are sequentially displayed as reduced images. After that, as indicated by dotted arrows and solid arrows in FIG. 4, each future frame closest to each frame displayed ahead of each title stored in the storage unit 10 updates the previous display as a reduced image. Display is sequentially performed, and thereafter the same display is repeated.

In the title list display, a highlight 100 is also displayed. When the highlight 100 is moved by a remote control operation (not shown) to select a title and a determination operation is performed on the remote control, the selected title is transferred from the hard disk by the HDD 9. Playback is performed and a playback sound is generated and a playback video is displayed on a television (not shown).

As described above, according to the title list display by the hard disk recorder according to the present invention, a reduced image of the frame when the maximum volume level is reached within a predetermined period, that is, an image estimated to be a characteristic scene is displayed for each title. Since the images are sequentially displayed, the user can grasp the contents of each title at a time and quickly find the target title.

Further, as described above, if the value of the variable Tw can be changed by remote control operation, the number of acquired frames can be changed, and the number of reduced images can be increased so that a characteristic screen can be easily displayed. The user can find the target title even more quickly.

In the present embodiment, the hard disk recorder has been described as an example.

These are the schematic block diagrams of the hard-disk recorder based on this invention. These are flowcharts regarding the frame acquisition operation during recording in the hard disk recorder according to the present invention. These are figures which show an example of a time change of a sound volume level. These are figures which show an example of the title list display by the hard-disk recorder based on this invention. These are figures which show an example of the title list display by the conventional hard disk recorder.

Explanation of symbols

1 Antenna 2 Tuner 3 Audio A / D Converter 4 Video A / D Converter 5 Signal Processor 6 Audio D / A Converter 7 Video D / A Converter 8 Controller 9 HDD
10 Storage Unit 11 Remote Control Receiver 100 Highlight

Claims (4)

In a video / audio recording apparatus for recording a video signal and an audio signal on a recording medium,
Frame acquisition means for acquiring each frame included in the video signal recorded on the recording medium when the volume level of the audio signal recorded on the recording medium is maximized within each predetermined period;
A display signal output means for outputting a display signal for causing the display means to sequentially display a reduced image of the frame acquired by the frame acquisition means for each title so as to update the previous display. Audio recording device. The video / audio recording apparatus according to claim 1, wherein the frame acquisition unit acquires the frames during recording of the video signal and the audio signal on the recording medium. The video / audio recording apparatus according to claim 1, wherein the predetermined period can be changed by an operation unit. The display signal displays a reduced image of each frame acquired by the frame acquisition unit first for each title on the display unit sequentially for each title, and then the frame is displayed next to each previously displayed frame. The display signal for repeatedly displaying the reduced image of each frame acquired by the acquiring unit on the display unit sequentially in the same title order as the previous display so as to update the previous display. The video / audio recording apparatus according to any one of claims 1 to 3.