JP2001006236A - Video recorder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make quickly reproducible the highlight in a program when a TV broadcasting is recorded and reproduced. SOLUTION: An audio signal intensity judging means 12 judges whether or not the intensity of the audio signal is beyond the normal level and above, and when the audio signal is judged as being beyond the normal level by the audio signal intensity deciding means 12, the information showing the recorded position on a recording medium of a storage part 2 whereon the video signal is recorded, is obtained by a recorded position retrieval means through a video recording means 14. This recorded position information obtained by a recorded position inspecting means 133 is recorded on the storage part 2 by a recorded position recording means 131. Then, at the time of reproduction, the recorded position information is obtained by a recorded position obtaining means 132 from the storage part 2, and the video signal being recorded after the recorded position on the recording medium shown by the recorded position information which is obtained by the recorded position obtaining means 132, is received by a reproduction means 16 from the storage part 2 and supplied to the TV receiver 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording apparatus for receiving and recording a television broadcast and reproducing the recorded contents.

[0002]

2. Description of the Related Art In an apparatus for sequentially recording video signals and audio signals obtained by receiving a television broadcast on a disk-shaped or tape-shaped recording medium, and then reproducing the recorded contents as necessary, It is important to be able to quickly find and play back the video to be played. Therefore, conventionally, the speed of cueing has been increased by a method of detecting a silent part of recorded voice. However, silence usually occurs between a program and a commercial broadcast (hereinafter also referred to as a CM) or at a boundary between a certain program and another program.
Basically, only program breaks can be detected. Therefore, it is impossible for such a conventional technique to respond to a user's request to quickly search for highlights of a program, for example, in a scene for obtaining a score in a live broadcast of soccer.

[0003]

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and an object of the present invention is to provide a recording apparatus capable of quickly reproducing a point of interest in a program. It is in.

[0004]

In order to achieve the above object, the present invention provides a receiving means for receiving a television broadcast signal and outputting a video signal and an audio signal, and transmitting at least the video signal from the receiving means. Receiving and successively, recording means for recording on a recording medium, and display means for displaying a video based on a video signal, and the video signal output by the receiving means is recorded in the recording means, and the recording means A recording device that obtains the recorded video signal from the recording unit, supplies the recorded video signal to the display unit, and reproduces a video, wherein an audio signal intensity determination unit determines whether the intensity of the audio signal is equal to or higher than a specified level When the audio signal strength determining means determines that the audio signal is equal to or higher than the specified level, the recording position on the recording medium of the recording means where the video signal is recorded. Recording position inspecting means for acquiring information indicating the recording position information, recording position recording means for supplying the recording position information acquired by the recording position inspecting means to the recording means and recording the recording position information on the recording medium, A recording position acquisition unit for acquiring position information, and the display unit receiving the video signal recorded from a recording position on and after the recording position on the recording medium represented by the recording position information acquired by the recording position acquisition unit. And reproducing means for supplying the data to the computer.

In the recording apparatus of the present invention, at the time of recording, the audio signal judging means judges whether or not the intensity of the audio signal is equal to or higher than a specified level. When it is judged that it is above the specified level,
Information indicating a recording position on a recording medium of a recording unit in which a video signal is recorded is acquired. The recording position acquisition unit supplies the recording position information acquired by the recording position inspection unit to the recording unit, and records the recording position information on a recording medium. Then, at the time of reproduction, the recording position acquisition unit acquires the recording position information from the recording unit, and the reproduction unit records the recording position information on and after the recording position on the recording medium represented by the recording position information acquired by the recording position acquisition unit. The received video signal is received from the recording means and supplied to the display means.

Further, the present invention provides a receiving means for receiving a television broadcast signal and outputting a video signal and an audio signal, and a recording means for receiving at least the video signal from the receiving means and sequentially recording the video signal on a recording medium. Display means for displaying an image based on a video signal, and channel switching means for outputting a signal to the receiving means in response to a user operation to switch and select a channel of a television broadcast, wherein the receiving means A video recording device for recording the video signal to be output on the recording means, acquiring the video signal recorded by the recording means from the recording means, supplying the video signal to the display means, and reproducing the video, and comprising a channel switching means. The recording means for recording the video signal when outputting a signal instructing channel switching to the receiving means Recording position inspection means for acquiring information indicating a recording position on the recording medium, recording position recording means for supplying the recording position information acquired by the recording position inspection means to the recording means and recording the information on the recording medium; A recording position acquisition unit that acquires the recording position information from the recording unit, and the video signal recorded after the recording position on the recording medium represented by the recording position information acquired by the recording position acquisition unit. Reproducing means for receiving from the recording means and supplying to the display means.

In the recording apparatus of the present invention, the recording position inspection means at the time of recording, when the channel switching means outputs a signal for instructing channel switching to the receiving means, a video signal is recorded on the recording medium of the recording means. Obtain information indicating the recording position. Then, the recording position recording means supplies the recording position information acquired by the recording position inspection means to the recording means, and causes the recording medium to record the recording position information. The recording position acquisition unit acquires the recording position information from the recording unit during reproduction, and the reproduction unit acquires the image recorded after the recording position on the recording medium represented by the recording position information acquired by the recording position acquisition unit. The signal is received from the recording means and supplied to the display means.

Further, according to the present invention, the receiving means receives a television broadcast signal and outputs a video signal and an audio signal, and also discriminates a type of a multiplexed audio signal to output a pilot signal. A pilot signal determining unit that determines whether or not the pilot signal has been output, wherein the recording position inspection unit is configured to output the video signal when the pilot signal determining unit determines that the receiving unit has output the pilot signal. Acquiring information representing a recording position on the recording medium of the recording unit on which the recording position information is recorded, wherein the recording position recording unit acquires the recording position information acquired by the recording position inspection unit based on the determination by the pilot signal determination unit. Is supplied to the recording means and is recorded on the recording medium.

In the recording apparatus according to the present invention, at the time of recording, it is determined by the pilot signal determining means whether or not the receiving means has output the pilot signal. Information indicating a recording position on a recording medium of a recording unit in which a signal is recorded is acquired. The recording position recording unit supplies the recording position information acquired by the recording position inspection unit to the recording unit and records the recording position information on a recording medium.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an example of a recording device according to the present invention. As shown in FIG. 1, a recording device 100 according to the present embodiment is roughly composed of a control unit 1, a storage unit 2 (recording means according to the present invention), a remote control device 3, and a television receiver 4. Then, under the control of the control unit 1, the video signal and the audio signal are recorded in the storage unit 2 and reproduced from the storage unit 2. As will be described in detail below, the storage unit 2 stores information of a recording position of a signal in a storage medium of the storage unit 2 together with a video signal and an audio signal, and a number (referred to as an index number) for managing this information. Information is recorded.
A set of the recording position information and the index number is referred to as index information here.

The storage unit 2 includes, for example, a disk device 22 formed of a disk-shaped recording medium, and an index storage unit 21 formed of, for example, an IC memory. The disk device 22 stores video signals, audio signals, and index information. Then, the index storage unit 21 temporarily stores the index information received and generated by the control unit 1. The recording medium of the disk device 22 has a data section 221 and an index section 222 secured.

The control unit 1 receives a television broadcast,
A tuner / decoder means 11 for separating and decoding a received signal into a video signal, an audio signal, and a pilot signal and outputting the separated signal, and the strength of the audio signal output from the tuner / decoder means 11 is defined. A voice signal strength determination unit 12 for determining whether the value is equal to or greater than an index value, an index management unit 13 for managing index information,
Recording means 14 for inputting and storing video / audio data
And a remote controller responding unit 15 for performing a process corresponding to pressing of a remote controller button of the remote controller 3, and a reproducing unit 16 for outputting a response to a user operation and a recorded video.

The tuner / decoder means 11 has, as outputs, one video signal system, two audio signal systems, and one pilot signal system. The pilot signal and pilot signal determination section 18 will be described later in detail in connection with another embodiment. Index management unit 13
Are the recording position inspection means 133 and the recording position recording means 13
1 and a recording position acquisition unit 132. The recording position inspection unit 133 stores information indicating at which recording position the video being recorded is recorded in the recording medium constituting the disk device 22 of the storage unit 2.
To get from. The recording position recording unit 131 supplies the recording position information acquired by the recording position inspection unit 133 to the storage unit 2 and causes the index storage unit 21 or the index unit 222 of the disk device 22 to record the recording position information. The recording position acquisition unit 132 acquires the recording position information from the storage unit 2, and causes the index information recorded in the index unit 222 of the disk device 22 to be transferred from the index unit to the index storage unit 21 at the start of reproduction. .
The tuner / decoder means 11 decodes the received signal into a predetermined format while receiving the television broadcast, and outputs video / audio and audio signals to the recording means 14. The technique of decoding the received signal is widely used in television receivers, and is well known, so that detailed description is omitted.

The tuner / decoder means 11 simultaneously outputs the audio signal to the audio signal strength judging means 12, further determines the type of the multiplexed audio signal, and generates a pilot signal at the break between the program and the CM. , To the pilot signal determination means 18. The pilot signal and pilot signal determination means 18 will be described later in detail in connection with another embodiment. Voice signal strength determination means 1
More specifically, 2 includes an integrator and a comparator (not shown). Tuner / decoder means 11
When an audio signal is input from the
2 obtains the average intensity through the integrator, and thereafter compares the intensity with the experimentally determined specified value using the comparator to determine the intensity of the audio signal. This kind of signal level determination technique is widely used in the field of electronic circuits, and is well known to those skilled in the art, and thus will not be described in further detail.

In this embodiment, the recording position inspection means 133 is provided for each sampling period repeated at a predetermined cycle.
The intensity of the audio signal detected by the audio signal intensity determination unit 12 is checked, and information on the recording position at the maximum timing when the intensity of the audio signal is equal to or greater than the specified value as described above in one sampling period is obtained. . The recording position recording unit 131 supplies the recording position information to the storage unit 2 and temporarily stores the information in the index storage unit 21.

Here, the reason why the condition that the strength of the audio signal is the maximum is also used is to prevent the index information from being generated more than necessary. When the recording process is completed, the index storage unit 21 outputs the held recording position information to the index unit 222 of the disk device 22 to store the index information.

At the time of recording, the recording means 14 converts the video signal and the audio signal into a predetermined format and outputs them to the storage unit 2, and manages the recording position on the recording medium of the disk device 22 to the data unit 221 of the disk device 22. Record. Then, when the recording position information is requested from the recording position inspection unit 133 of the index management unit 13, the recording unit 14 supplies the information to the recording position inspection unit 133. The remote controller 3 includes a channel selection button, a recording button, a playback button, a next index (next cue) button, and a previous index (previous cue) button. When these buttons are pressed, a predetermined signal corresponding to each button is provided. To the remote control response means 15. The remote control response means 15
The signal (event) received from the remote controller 3 is determined, and is appropriately distributed to the tuner / decoder unit 11, the index management unit 13, and the reproduction unit 16.

When a play button, a next index button, or a previous index button of the remote controller 3 is pressed, the reproducing means 16 is activated. Then, the reproducing unit 16 acquires the recording position information of the signal to be reproduced from the index storage unit 21 through the recording position acquiring unit 132, and reproduces the video signal and the audio signal from the recording position represented by the information.

Next, the recording apparatus 10 configured as described above
The operation of 0 will be described. FIG. 2 shows a recording device 1 during recording.
FIG. 3 is a flowchart showing the operation of the index management unit 13, and FIG. 4 is a conceptual diagram showing the relationship between the audio signal intensity and the index information. Hereinafter, the operation of the recording device 100 at the time of recording will be described in detail with reference to FIGS.

First, when the user performs a recording operation with the remote control device 3, the remote control response unit 15 notifies the index management unit 13 and the tuner / decoder unit 11 of the operation. Accordingly, the recording position recording unit 131 of the index management unit 13 sets the recording position to 0 and the index number to 0 to initialize the index information (Step A1). At this time, the recorded contents of the index storage unit 21 are as shown in a row 401 of a table 411 shown in FIG. The index management unit 13 further initializes the audio signal intensity variable, the recording position variable, and the sampling counter variable held by the audio signal intensity determination unit 12 to zero. These variables are used in step A25 shown in FIG. 2 and will be described later in detail.

The tuner / decoder means 11
Decodes a received signal into a predetermined format while receiving a television broadcast, and records a video signal and an audio signal in a recording unit 1.
4 and outputs an audio signal to the audio signal strength determination means 12 (step A2 and step A2).
3).

As a recording operation, the recording means 14 receives the video signal and the audio signal from the tuner / decoder means 11, converts them into a predetermined format, and records them in the data part 221 of the disk device 22 constituting the storage part 2 ( Step A4). On the other hand, the audio signal strength determination means 12 checks whether or not the strength of the input audio signal is equal to or more than the specified value 412 (FIG. 4). Notifies the index management unit 13 to that effect. Thus, the index management unit 13 performs an operation of recording index information (step A5).

Hereinafter, the processing in step A5 will be described in detail with reference to FIG. In the index management unit 13, the recording position inspection unit 133 receives the notification from the audio signal intensity determination unit 12 (Yes in step B1), and the audio signal intensity determination unit 12 stores the information as the audio intensity variable. Then, the intensity value of the audio signal at the time of exceeding the threshold value is compared with the current intensity value (step B2). At this stage, since the sound intensity variable has been initialized to 0 in step A1, the determination result in step B2 is Yes, and therefore, the recording position inspection unit 133 requests the recording unit 14 for the recording position of the video currently being recorded. (Step B3).

In response to this request, the recording means 14 acquires the physical position of the video currently being recorded in the recording medium and supplies it to the recording position inspection means 133. In the present embodiment, the physical position refers to a sector number of a disk-shaped recording medium constituting the disk device 22. When the storage unit 2 uses a tape-shaped recording medium unlike the present embodiment, the physical position is the time from the beginning of the tape,
Or it is the number of rotations of the tape.

Next, the recording position inspection means 133 uses the audio signal strength received from the audio signal strength judgment means 12 and the recording position received from the recording means 14 as the values of the audio signal strength variable and the recording position variable, respectively. It is stored in the signal strength determination means 12 (step B4). The audio signal strength determination means 12 checks whether the sampling period has ended using the sampling counter variable (step B5). If the sampling period has ended, it is next checked whether the audio signal strength variable is 0 (step B6).
Here, when the audio signal strength variable is equal to the initial value 0, it means that the audio signal strength variable has never reached the specified value during the sampling period.

If the audio signal strength variable is other than 0, the recording position recording means 131 of the index management unit 13 additionally records the index number and the recording position held in step B4 in the index storage unit 21 of the storage unit 2. (Step B7). In the example of FIG. 4, in the third sampling period 404, two peaks 404 exceeding the specified value are set.
A and 404B are present, but since the peak 404A is larger, the recording position stored as the value of the recording position variable at the timing of the peak 404A is finally recorded in the index storage unit 21. And Table 4 of FIG.
As shown in the row 402 of 11, for example, 100 is recorded as the recording position, and 1 is recorded as the corresponding index number.

Thereafter, the index management unit 13 clears (initializes to 0) the voice signal strength variable (step B8),
Clear the sampling counter variable (Step B
9). If the audio signal strength variable is 0 in step B6, the process proceeds to step B9. Here, returning the audio signal strength variable and the sampling counter variable to the initial values in step B8 and step B9 means the start of the next sampling period.

If it is determined in step B5 that the sampling period has not ended, the index management unit 1
3 increments the sampling counter variable held by the audio signal strength determination means 12 (step B1).
0). The processing from the above steps A2 to A5 (FIG. 2) is repeated until the recording ends (step A6). In the example of FIG. 4, the intensity of the audio signal exceeds the specified value even in the seventh sampling period due to the change in the intensity of the audio signal. As a result, as shown in the row 403 of the table 411 shown in FIG. The recording position 306 is recorded in the index storage unit 21 and the index number 2 is recorded in the index storage unit 21. When the recording is completed, the recording position recording unit 131 stores the contents of the index storage unit 21 in the index unit 222 of the disk device 22 (Step A7).

Next, reproduction of the video recorded in the storage unit 2
The cueing operation will be described in detail. FIG.
5 is a flowchart illustrating an operation of the recording device 100 during reproduction. Upon receiving a reproduction instruction from the remote control response unit 15, the reproduction unit 16 notifies the index management unit 13 of the start of reproduction. Recording position acquisition unit 1 of index management unit 13
32 indicates index information corresponding to the video to be reproduced,
The storage unit 2 is controlled to cause the index storage unit 21 to read from the index unit 222 of the disk device 22. As a result, in the example of FIG. 4, the storage contents of the index storage unit 21 are as shown in Table 411.

The index management unit 13 initializes the “current index number and recording position” held as variables to the same values as those in the row 401 of the table 411 in FIG.
(Step C1). Next, the reproducing means 16 starts reproducing from the "current recording position" (step C2).

The remote control response means 15 monitors the event, and acquires a remote control button event when the remote control button is pressed (step C3). Remote control response means 15
When the pressed button is the "stop" button (step C4), the reproduction unit 16 is immediately requested to stop reproduction.
(Step C12). If the pressed button is the "previous index" button (step C5), the index management unit 13 is requested to decrement the "current index number" (step C7). Further, when the pressed button is the “next index” button (step C
6) Request the index management unit 13 to decrement the "current index number" (step C8).

Next, when the reproducing unit 16 requests a new video reproducing position from the index managing unit 13, the recording position acquiring unit 132 of the index managing unit 13 proceeds to step C7.
And the information corresponding to the index number updated in step C8 is read from the index storage unit 21 (step C9), and the corresponding recording position is supplied to the reproducing unit 16.
(Step C10). For example, in FIG.
(405) If the next index button is pressed during playback in the vicinity, the “current index number” becomes 2,
The corresponding recording position is 306 (row 40 in Table 411).
3). When the reproducing means 16 acquires a new recording position,
The reproduction is started from that position (step C11). After step C3, the reproduction is stopped by the user (step C3).
4. It is repeated until step C12) is performed.

In television broadcast programs such as dramas and sports broadcasts, the background music (BGM) changes to a flashy and intense tune, and the audience cheers, so that the sound level is increased in a so-called "excitement" scene. It tends to rise sharply. Therefore, the information of the recording position acquired by the recording position inspection means 133 at the time of the reproduction as described above corresponds to such an “excitement” scene, and in the present embodiment, this information is recorded and reproduced. At times, reproduction can be started from the recording position represented by the information. As a result, it is possible to quickly reproduce a point that becomes a highlight of the program.

In the above embodiment, the reproduction is started from the beginning of the video. However, in step C1, the initialization value of the "current index number and recording position" is
If the recording position of the stop position at the previous playback and the corresponding previous index number are used, the playback is interrupted, and then when the playback is restarted, the next excitement can be searched immediately. This is very convenient when watching the video following the point where the reproduction was interrupted. For example, specifically explaining with reference to the example of FIG.
Assuming that the reproduction is stopped at the recording position 406, the “current recording position” is 323, the “current index number” is 2 (line 403), and the index number is 3
The recording position after the number (not shown) can be quickly taken out.

Next, a second embodiment of the present invention will be described. In the second embodiment, the recording device 100
Also has a function of automatically generating index information when a user selects a channel during recording. In the recording device 100 according to the second embodiment, when the remote control device 3 outputs a signal for instructing channel switching based on a user operation to the receiving unit, the recording position inspection unit 133 records the video signal. It also has a function of acquiring information indicating a recording position in the disk device 22 to be executed.

Hereinafter, the operation of the recording apparatus 100 according to the second embodiment will be described. FIG. 6 is a flowchart showing the operation of the index management unit 13. FIG. 6 is different from FIG. 3 in that each step (B1, B2, B4, and B5) of the audio signal strength determination in FIG. 3 is replaced with a determination of a remote control channel selection button (step D1). In FIG. 6, the same steps as those in FIG. 3 are denoted by the same reference numerals.

The remote controller responding means 15 controls the tuner / decoder means 1 when the tuning button is pressed during recording.
1 and the index management unit 13 is notified of the occurrence of the event. Accordingly, first, the tuner / decoder means 11 changes the channel. Further, the recording position inspection means 133 of the index management unit 13 detects that the channel selection button has been pressed (step D1), acquires the current recording position in step B3, and the recording position recording means 131 The corresponding index number is stored in the index storage unit 21 (step D2). Step D2 is different from step B7 in that no recording position variable is used as in the above embodiment.

As described above, in the second embodiment, when the user changes the channel during recording while watching a program,
Since the recording position information of the video signal and the audio signal at that time is recorded in the same manner as in the above-described embodiment, at the time of reproduction, this information is used to easily search for the location where the channel is switched, and Subsequent images can be quickly reproduced.

Although only the functions newly added in the second embodiment have been described here, the recording apparatus 100 of the first embodiment as a matter of course has the functions described above. Therefore, the entire operation during recording is as shown in FIG. FIG. 7 is a flowchart showing the recording operation of the index management unit 13 according to the second embodiment, and is an integration of FIG. 3 and FIG. 7, the same elements as those in FIGS. 3 and 6 are denoted by the same reference numerals.

Next, a third embodiment will be described. In the recording device 100 according to the third embodiment,
The pilot signal determining means 18 determines whether or not the receiving means has output a pilot signal.
Reference numeral 3 further includes a function of acquiring information indicating the recording position of the video signal when the pilot signal determining means 18 determines that the receiving means has output the pilot signal.

At the time of reproduction, the reproducing means 16 converts, for example, a video signal recorded in a specific area on the recording medium based on the recording position on the recording medium indicated by the recording position information acquired by the recording position acquiring means 132. Except for this, the image processing apparatus further includes a function of acquiring a video signal recorded on a recording medium from the storage unit 2 and supplying the video signal to the television receiver 4.

Therefore, in the third embodiment, the recording position inspection means 133 is
The recording position is acquired at the timing of the start and end of the CM broadcast based on the determination result of
Causes the storage unit 2 to store the recording position information and the respective index numbers. Therefore, at the time of reproduction, the reproducing means 16 can acquire a video signal by skipping the period of the CM broadcast, for example, by using the index information based on the user's instruction, and the user can view the video by looking at the part of the CM broadcast. Can be appreciated. Then, since the recording position recording means, recording position acquisition means, and recording position inspection means necessary for quickly reproducing the point of interest in the program described above can be commonly used, such a function can be provided at low cost. Can be realized.

In the first embodiment,
The audio signal strength determination means 12 compares the intensity of the audio signal with a specified value, and the recording position inspection means 133 obtains the recording position information at the timing when the recording value reaches the maximum value based on the result. However, instead of comparing the audio signal strength with a specified value, the recording position inspection means 133 acquires information on the recording position when the amount of change in the audio signal strength exceeds a reference. Is also effective.

Further, the recording position inspection means 133 checks the strength of the audio signal in each sampling period repeated at a predetermined cycle, and when the strength of the audio signal is always equal to or higher than the specified level during the sampling period, the strength of the audio signal is checked. It is also possible to adopt a configuration in which information of the recording position at the maximum timing is acquired. FIG. 8 is a waveform diagram showing this method, which is a drawing similar to a part of FIG. 4 already described. In the example shown in FIG. 8, the intensity of the audio signal is always equal to or greater than the specified value 412 in the sampling periods S1 and S2.
1, the recording position is recorded at the timing of the maximum value in S2 (inverted black triangle in FIG. 8).

In the second embodiment, the recording apparatus 100 has the function of the first embodiment described above with respect to recording of a recording position. It is of course possible to adopt a configuration having only a specific function.

[0046]

As described above, in the recording apparatus of the present invention, at the time of recording, the audio signal determining means determines whether or not the intensity of the audio signal is equal to or higher than a specified level. When the determining means determines that the audio signal is equal to or higher than the specified level, it acquires information indicating a recording position on the recording medium of the recording means for recording the video signal. The recording position acquisition unit supplies the recording position information acquired by the recording position inspection unit to the recording unit, and records the recording position information on a recording medium. Then, at the time of reproduction, the recording position acquisition unit acquires the recording position information from the recording unit, and the reproduction unit records the recording position information on and after the recording position on the recording medium represented by the recording position information acquired by the recording position acquisition unit. The received video signal is received from the recording means and supplied to the display means.

In a television broadcast program such as a drama or a sports broadcast, the background music (BGM) changes to a flashy and intense tune, or the audience cheers, and the sound level is increased in a so-called "excitement" scene. It tends to rise sharply. Therefore, the information of the recording position acquired by the recording position inspection means at the time of reproduction as described above corresponds to such an “excitement” scene, and in the present embodiment, this information is recorded and at the time of reproduction, Reproduction can be started from the recording position represented by the information. As a result, it is possible to quickly reproduce a point that becomes a highlight of the program.

Further, in the recording apparatus of the present invention, the recording position inspecting means at the time of recording, when the channel switching means outputs a signal for instructing channel switching to the receiving means, a recording medium of the recording means for recording a video signal. The information indicating the upper recording position is obtained. Then, the recording position recording means supplies the recording position information acquired by the recording position inspection means to the recording means, and causes the recording medium to record the recording position information. The recording position acquisition unit acquires the recording position information from the recording unit during reproduction, and the reproduction unit acquires the image recorded after the recording position on the recording medium represented by the recording position information acquired by the recording position acquisition unit. The signal is received from the recording means and supplied to the display means. Therefore, in the recording apparatus of the present invention, when the user changes the channel during recording while watching a program, the recording position information of the video signal at that time is recorded. Can be easily searched for and the video subsequent to that location can be quickly reproduced.

In the recording apparatus of the present invention, when recording,
The pilot signal determining means determines whether or not the receiving means has output the pilot signal, and the recording position inspection means determines, when the receiving means outputs the pilot signal, the recording means on the recording medium of the recording means on which the video signal is recorded. Gets information indicating a location. The recording position recording unit supplies the recording position information acquired by the recording position inspection unit to the recording unit and records the recording position information on a recording medium.

That is, according to the present invention, the recording position inspection means, based on the determination result of the pilot signal determination means,
The recording position is acquired at the timing of the start and end of the CM broadcast, and the recording position recording means stores the recording position information in the recording means. Therefore, at the time of reproduction, the reproduction means can acquire a video signal by skipping the period of the CM broadcast, for example, by using these index information based on the user's instruction, and the user can view the video except the part of the CM broadcast. You can watch it. Since the recording position recording means, recording position acquisition means, and recording position inspection means necessary for quickly reproducing the above-mentioned highlights of the program can be commonly used, the recording apparatus of the present invention is low cost. Can be realized.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an example of a recording device according to the present invention.

FIG. 2 is a flowchart illustrating an operation of the recording device during recording.

FIG. 3 is a flowchart illustrating an operation of an index management unit.

FIG. 4 is a conceptual diagram illustrating a relationship between audio signal strength and index information.

FIG. 5 is a flowchart illustrating an operation of the recording device during reproduction.

FIG. 6 is a flowchart illustrating an operation of an index management unit.

FIG. 7 is a flowchart illustrating a recording operation of an index management unit according to the second embodiment.

FIG. 8 is a waveform diagram showing another method for determining the strength of an audio signal.

[Explanation of symbols]

1 ... control unit, 2 ... storage unit, 3 ... remote control device, 4
... TV receiver, 11 ... Tuner / decoder means, 12 ... Audio signal strength determination means, 13 ... Index management unit, 14 ... Recording means, 15 ... Remote control response means, 16 ... Reproduction means, 18 pilot signal determination means 21 index storage unit 22 disk device 100 recording device 131 recording position recording unit 132 recording position acquisition unit 133 recording position inspection unit .

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) H04N 5/781 H04N 5/781 510L 5/85 5/91 L G11B 27/00 C 27/10 EF term (reference) 5C052 AA03 AB03 AC08 CC20 DD10 EE02 5C053 FA14 FA20 GB05 GB11 HA29 JA02 JA21 KA16 KA17 LA06 5D077 AA21 CA02 DC16 DC35 DC36 EA01 5D102 AC01 HB03 HB07 HB13 HB18 5D110 AA12 AA28 CB07 DA01 DA09 DA09 DA09 DA09 DA09

Claims (7)

[Claims] A receiving means for receiving a television broadcast signal and outputting a video signal and an audio signal; a recording means for receiving at least the video signal from the receiving means and sequentially recording the video signal on a recording medium; Display means for displaying an image based on the image data, wherein the video signal output by the receiving means is recorded in the recording means, and the video signal recorded by the recording means is obtained from the recording means, and the display means An audio signal strength determining means for determining whether or not the strength of an audio signal is equal to or higher than a specified level, wherein the audio signal strength determining means determines that the audio signal is at the specified level. When determining that the above is the case, a recording position inspection unit that acquires information indicating a recording position on the recording medium of the recording unit where the video signal is recorded; A recording position recording unit that supplies the recording position information acquired by the recording position inspection unit to the recording unit and records the recording position information on the recording medium; a recording position acquisition unit that acquires the recording position information from the recording unit; Reproduction means for receiving from the recording means the video signal recorded after the recording position on the recording medium indicated by the recording position information acquired by the position acquisition means, and supplying the video signal to the display means. Video recording device. 2. The recording position inspection means checks the strength of an audio signal for each sampling period repeated at a predetermined cycle,
2. The recording apparatus according to claim 1, wherein the information on the recording position at a timing when the strength of the audio signal becomes maximum in the sampling period is acquired. 3. The recording position inspection means checks the strength of the audio signal for each sampling period repeated at a predetermined cycle.
2. The recording apparatus according to claim 1, wherein the information on the recording position is acquired when the strength of the audio signal is always equal to or higher than the specified level during the sampling period. 4. The recording apparatus according to claim 1, wherein said recording position inspection means acquires information on a recording position when a change amount of the intensity of the audio signal exceeds a reference. 5. The recording position recording means supplies index number information for identifying the number of the recording position information to be supplied to the recording means, together with recording position information, to the recording means for recording. The recording device according to claim 1, wherein the recording is performed. 6. A receiving means for receiving a television broadcast signal and outputting a video signal and an audio signal; a recording means for receiving at least the video signal from the receiving means and sequentially recording the video signal on a recording medium; Display means for displaying an image based on the image, and channel switching means for outputting a signal to the receiving means in response to a user operation to switch and select a channel of the television broadcast, wherein the image outputted by the receiving means is provided. A recording device for recording a signal on the recording device, acquiring the video signal recorded by the recording device from the recording device, supplying the video signal to the display device, and reproducing a video, wherein the channel switching device performs channel switching. Is output to the receiving means, the video signal is recorded on the recording medium of the recording means. A recording position inspecting unit that acquires information indicating the recording position above, a recording position recording unit that supplies the recording position information acquired by the recording position inspecting unit to the recording unit and records the recording position information on the recording medium, A recording position acquisition unit that acquires the recording position information from the recording unit; and the video signal recorded from a recording position on the recording medium that is indicated by the recording position information acquired by the recording position acquisition unit. A recording device comprising: a reproducing unit that receives the data and supplies the received data to the display unit. 7. The receiving means receives a television broadcast signal, outputs a video signal and an audio signal, determines a type of a multiplexed audio signal, and outputs a pilot signal, and the receiving means converts the pilot signal into a pilot signal. A pilot signal determining unit that determines whether the pilot signal has been output, wherein the recording position inspection unit records the video signal when the pilot signal determining unit determines that the receiving unit has output the pilot signal. The recording means acquires information representing a recording position on the recording medium of the recording means, and the recording position recording means records the recording position information acquired by the recording position inspection means based on the determination by the pilot signal determination means. The recording apparatus according to claim 1, wherein the recording apparatus supplies the recording medium to the recording medium and records the recording medium on the recording medium.