JP2009124723A - Device and method for recording video signal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem wherein the operation of equipment is restricted during wait time since a video signal recording device has always waited for receiving a program start identification code in program-related information and a desired broadcast program ID from scheduled recording start time in a recording standby state conventionally. <P>SOLUTION: A CPU 18 records a timed recording program longer by the maximum extension time acquired from the description of a character string indicating the maximum extension time of EPG, when determining that the broadcast start time of the timed recording program may become later by professional baseball broadcast broadcasted before that according to a timed recording list and the description of the character string of EPG. When only a character string indicating the extension is written in the description of the character string of EPG, a prescribed amount of time is set to be the maximum broadcast extension time. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a video signal recording apparatus and a video signal recording method, and more particularly to a video signal recording apparatus and a video signal recording method having a function of obtaining and displaying an electronic program guide (EPG).

  In a video signal recording device equipped with a timer reservation function for a television broadcast program, the user makes a timer reservation for information such as the start time, channel and end time of the desired television broadcast program to be recorded, and makes a reservation. When the start time arrives, the video signal of the television broadcast program of the reserved channel is automatically recorded until the reserved end time.

  However, if the desired television broadcast program to be reserved recording is a sports broadcast program such as soccer or baseball, the broadcast time may be extended up to the maximum extension time, and the broadcast end time of the reserved program May be exceeded. In addition, if the desired television broadcast program that is scheduled to be recorded is a broadcast program after the sports broadcast program in which the game time is extended, the reserved broadcast start time may be advanced by the time corresponding to the extended time. It becomes. In such a case, the video signal of the desired television broadcast program cannot be accurately recorded on the recording medium without excess or deficiency from the program start time to the end time.

Therefore, the program related information consisting of the program start / end time identification code, the time difference data between the broadcast start time and the actual broadcast start time is received as a broadcast signal multiplexed with the program information, and the program related information is obtained. By analyzing separately and recording the video signal of the broadcast program of the television broadcast on the recording medium based on the analysis result, the end time and start time of the desired broadcast program to be reserved recording has been changed Even in such a case, a video signal recording apparatus that records desired program information on a recording medium from a program start time to an end time has been conventionally known (for example, JP-A-10-11834).

  Also, in BS digital broadcasting and the like, since individual identification information (ID) is broadcast for each program, even when the end time or start time of a desired broadcast program to be reserved recording is changed, By starting recording after detecting the ID, it is possible to record desired program information on the recording medium from the program start time to the end time.

  However, in the conventional video signal recording apparatus described in the above publication and the conventional video signal recording apparatus that detects the program ID of the BS digital broadcast and records the video signal of the desired broadcast program, the program related from the scheduled recording start time. There is a problem that the program start identification code and the ID of the desired broadcast program in the information are always received in the recording standby state, during which the operation of the device is restricted, and of course recording cannot be performed even by switching the channel. There is.

  In addition, a method of acquiring EPG data reflecting the program organization and changing the recording program has been proposed, but the handling during the extension until the program organization is determined is unclear and is not realistic. Conventionally, a dedicated service is required and is not supported by the most necessary terrestrial wave.

  The present invention has been made in view of the above points, and without requiring a dedicated service, even when the end time or start time of a desired broadcast program to be reserved recording is changed, the program is almost accurately performed. An object of the present invention is to provide a video signal recording apparatus and a video signal recording method capable of recording a video signal of a broadcast program on a recording medium from a start time to an end time.

In order to achieve the above object, the present invention provides the following apparatus and method.
(1) recording means for recording a video signal of a broadcast program of television broadcasting;
Obtaining and displaying means for obtaining and displaying an electronic program guide;
Reservation recording setting means for setting reservation recording of a broadcast program of a desired channel;
Based on the description of the character string of the electronic program guide obtained by the obtaining / displaying means, the broadcast program for which the reserved recording is set by the reserved recording setting means is a program that may extend the broadcast time, or Program discriminating means for discriminating whether or not the program is the same channel after a certain program;
When the broadcast program for which reserved recording is set is determined by the program determination means to be a program whose broadcast time may be extended or a program of the same channel after the program that may be extended, the electronic program guide A broadcast maximum extension time acquisition means for acquiring a broadcast maximum extension time of a program that may be extended from a description of a character string indicating the maximum extension time of the program;
The maximum broadcast time for the broadcast signal that has been acquired by the broadcast maximum extension time acquisition means for the program with the possibility of extending the broadcast time and the reserved recording program of the same channel after the program with the possibility of extension of the broadcast time. Control means for controlling the recording means to be long and recorded by the recording means,
Broadcast maximum extension time acquisition means,
When the character string indicating the maximum extension time and the character string indicating the extension are described in the electronic program guide, the difference between the normal end time and the maximum extension end time is obtained as the maximum broadcast extension time, and A video signal recording apparatus characterized in that when a character string indicating a maximum extension time is not described in the program table and only a character string indicating an extension is described, a predetermined time is obtained as a maximum broadcast extension time.
(2) A video signal recording method used in a video signal recording apparatus,
A recording step of recording a video signal of a television broadcast program;
An acquisition / display step for acquiring and displaying an electronic program guide,
Scheduled recording setting step for setting scheduled recording of a broadcast program of a desired channel;
Based on the description of the character string in the electronic program guide obtained in the obtaining / displaying step, the broadcast program for which the scheduled recording is set in the scheduled recording setting step is a program with the possibility of extending the broadcast time or the possibility of extension. A program discriminating step for discriminating whether or not the program is the same channel after a certain program;
When it is determined in the program determination step that the broadcast program for which reserved recording is set is a program whose broadcast time may be extended or a program of the same channel after the program that may be extended, the electronic program guide A broadcast maximum extension time acquisition step of acquiring a broadcast maximum extension time of a program having a possibility of extending the broadcast time from a description of a character string indicating the maximum extension time of
The video signal of the program with the possibility of extending the broadcast time and the reserved recording program of the same channel after the program with the possibility of the extension of the broadcast time for the maximum broadcast extension time acquired by the broadcast maximum extension time acquisition step. A control step for controlling the recording step to be long and recorded by the recording step, and
The broadcast maximum extension time acquisition step further includes:
When the character string indicating the maximum extension time and the character string indicating the extension are described in the electronic program guide, the difference between the normal end time and the maximum extension end time is obtained as the maximum broadcast extension time, and A video signal recording method characterized in that when a character string indicating a maximum extension time is not described in the program table and only a character string indicating an extension is described, a predetermined time is acquired as the maximum broadcast extension time.

  According to the present invention, when it is determined that a broadcast program for which reserved recording is set is a program of the same channel after a program whose broadcast time may be extended, it is possible to extend the broadcast time acquired from the electronic program guide. By recording longer than the maximum broadcast extension time for programs that have the possibility of being broadcasted, even if the dedicated service is not provided or the broadcast time of programs that may be extended is extended, the reservation is set. The video signal of a broadcast program can be recorded to the end.

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of a video signal recording apparatus according to the present invention. In the figure, a video signal recording / reproducing apparatus 10 includes a tuner 11 that receives a broadcast signal of a desired channel and obtains a received signal, an encoder (ENC) 12 that encodes the received signal by an encoding method such as MPEG, A digital video recorder (DVR) 13 such as HDD or DVD-RW, a decoder (DEC) 14 for decoding encoded data encoded by an encoding method such as MPEG, and a vertical blanking interval of broadcast waves ( From an EPG analyzer 15 for acquiring and analyzing an EPG inserted into the VBI), an on-screen display (OSD) 16, an extension detector 17 connected to a network such as the Internet, and a central processing unit (CPU) 18. It is configured and connected to the television monitor 20. The CPU 18 comprehensively controls each unit of the video signal recording / reproducing apparatus 10.

  Next, the operation of the video signal recording / reproducing apparatus 10 configured as described above will be described. First, the state of the DVR 13 will be described. During recording under the control of the CPU 18, the broadcast wave signal of the selected desired channel is selectively received by the tuner 11, converted into a baseband received signal, and supplied to the encoder 12, where a moving image such as MPEG is recorded. After being encoded into a digital video signal of a broadcast program of a desired channel by an encoding method, it is written to the DVR 13.

  At the time of reproduction, the digital video signal read from the DVR 13 under the control of the CPU 18 is returned to the video signal of the broadcast program of the desired channel by the decoder 14, and the operating state is added by the OSD 16, and then the television monitor 20. Is output and viewed. Further, the EPG analyzer 15 acquires EPG data inserted into the VBI of the received broadcast wave from the tuner 11, analyzes the data content, and displays the data in the display format on the OSD 16. The user selects an arbitrary broadcast program by remote control operation, and sets or cancels recording reservation on the screen. Note that the EPG data includes information indicating the maximum extension time of a sports program. Currently, there is a service for multiplexing EPG data and transmitting it to VBI of a broadcast wave. For example, it is transmitted about several times every day for about 5 times and once for about 10 minutes.

  The extension time detector 17 is connected to a website via the Internet and detects the extension time of the broadcast program. The Web site accessed by the extended time detector 17 is a site that performs live broadcast scoreboard display. Currently, this service is used in major sports in Japan and the United States.

  Next, as a general example of sports broadcasting, how the extension of baseball broadcasting affects the subsequent programs will be described. Assume that the program organization is as shown in FIG. In the program organization shown in the figure, the display of “maximum extension 0924” during the professional baseball broadcast from 19:00 to 20:54 indicates that the professional baseball broadcast is extended to 9:24 pm at the maximum. That is, the maximum extension time is 30 minutes. Therefore, when the professional baseball broadcast is extended to the maximum extension time, the program of the drama A that starts from 21:00 on the original, with the CM of the same channel and the news from 20:54 after that, 21:30 It means that all the programs after the drama A are broadcast with the start time lowered by 30 minutes each, starting from minutes.

  However, if the game ends when the original broadcast end time has passed but before the maximum extension time, for example, if the match ends at 21:10, the time is adjusted by the digest of the match, a hero interview, etc. The program is reorganized so that the news starts at 21:19 and the drama A starts at 21:25 so that it can be put down in units of 5 minutes with good separation.

Based on the above, the operation of the present embodiment will be described next. First, the CPU 18 determines the presence / absence of a program that is affected by the extension of the sports broadcast time from the recording reservation list and the EPG. When there is a program that may be affected by the extension of the sports broadcast time, the extension determination described below is executed to record the video signal of the broadcast program.
As an example, a case where the drama A in the program organization shown in FIG.

  First, when the CPU 18 determines from the recording reservation list and the EPG that the drama A to be recorded for recording is a program whose broadcast start time may be delayed by a professional baseball broadcast starting at 19:00, the extension detector 17 is connected to a predetermined Web site that distributes professional baseball live data via the Internet to start operation, and the presence or absence of the above-mentioned professional baseball broadcast is detected from the live data. The above-mentioned predetermined Web site is a site that is already known as described above, which is a live broadcast that displays a sports board scoreboard as described above. For example, the scoreboard display shown in FIG. Distribute live data that can be displayed on

  The extension detector 17 acquires in advance the maximum extension time of the above-mentioned professional baseball broadcast from the EPG data from the EPG analyzer 15, and when the original broadcast end time of the above-mentioned professional baseball broadcast comes at 20:54, the extension detector 17 Regularly obtain live data from the site and start judging progress. In other words, when the professional baseball broadcast end time of 20:54 when the broadcast extension is not reached, the live data is obtained from the above website, and the professional baseball game started broadcasting from 19:00 is over. If yes, the CPU 18 is notified of the detection result to that effect. Thus, the CPU 18 causes the DVR 13 to start recording the digital video signal of the drama A from 21:00, which is the original broadcast start time.

  On the other hand, the extension detector 17 obtains live data from the above website when the professional baseball broadcast end time reaches 20:54, and the professional baseball game being broadcast has not reached the back eight times. In this case, the website is re-accessed every 5 minutes thereafter to obtain live data, and the progress is sequentially judged. Then, the extension detector 17 acquires live data every minute from the time when the number of broadcast professional baseball games is nine or more until the end of the game is confirmed or the maximum extension time is reached.

  The CPU 18 controls the recording start and recording end of the DVR 13 based on the game situation detection result from the extension detector 17. That is, the CPU 18 estimates that the program will be reorganized as described above depending on the situation such as when the maximum extension time is reached before the match ends or when the match ends before the maximum extension time elapses. Then, the start and end times of the scheduled recording program confirmed first are reflected in the subsequent EPG.

  For example, if the professional baseball broadcast is extended to the maximum extension time, the drama A program starts at 21:30, and the original broadcast end time has passed, but before the maximum extension time, for example 21:10 In the case of the end of the game, the CPU 18 determines that the drama A program starts from 21:25, and the CPU 18 starts recording the digital video signal from the coder 12 by the DVR 13 from the determined program start time.

  Further, when the CPU 18 receives a detection result indicating that the game has ended before the maximum extension time from the extension detector 17, the end time of the drama A is considered in consideration of the case where the offset for the time adjustment deviates from the prediction. It is possible to record more safely by taking measures such as recording 5 minutes longer. In addition, the judgment of the progress of the game is always monitored by obtaining live data every 5 minutes if it is before the 8th round of the game and checking the live data every minute after 9 times. There is no need to do this, and by making such an intelligent decision, there is an advantage that both the client device and the server of the information provider have less burden.

  As described above, according to the present embodiment, the extension detector 17 judges the game situation almost in real time based on the actual service data of the existing service acquired from the website, and reaches the maximum extension time before the game ends. Depending on the situation, such as when the game ends or the game ends before the maximum extension time, the start and end times of the scheduled recording program confirmed at the beginning are changed to the time when the program reorganization is estimated and recording starts. In addition, since the recording is ended, it is not necessary to wait in the recording pause state from the broadcast start time of drama A until 20:00 from the broadcast start time of drama A until the actual broadcast start delay time of the drama A due to the extension of the professional baseball broadcast time. . Therefore, in the present embodiment, the operation of the device is not restricted even during the time in the conventional recording pause state.

  Even if the video signal recording / playback apparatus 10 performs recording or playback operation after the original broadcast start time of the drama A, for example, the reserved recording is started in the OSD 16 after several minutes before the drama A deferred broadcast start time. By displaying such a message, it is possible to make a scheduled recording of the drama A without any trouble.

  In the case of reserved recording of a digital broadcast program, an ID is added to the program and the program is broadcasted. Therefore, when the maximum extension time is reached before the end of the game as described above, or before the maximum extension time Depending on the situation such as when the game ends, the start and end times of the scheduled recording program confirmed first are changed to the time when the program reorganization is estimated, and slightly different from the changed estimated program start time. By detecting whether or not the ID of the reserved program has been received from the previous time and starting recording from the time when the ID is detected, accurate reserved recording can be performed.

  In this embodiment, the extension time detector 17 is connected to a predetermined website that distributes professional baseball live data via the Internet to start operation, and whether or not the above-mentioned professional baseball broadcast is extended from the live data. Is detected. As described above, the predetermined Web site is a site that is already known at present, which is displaying a live broadcast scoreboard live.

  Acquisition of actual data is not limited to such a method. When the apparatus has a function of accepting a program reservation via a reservation mail from outside, this reservation mail system may be diverted to obtain live data. The device checks the mail server mailboxes every five minutes to see if the reservation mail has arrived. Therefore, as in the above-described embodiment, the live data may be acquired via mail without being directly connected to the website.

  That is, the live data is provided from the website to the mail server, and this live data is transferred and transmitted as mail data to the subscriber's mailbox. When the apparatus confirms the reservation mail, the apparatus acquires this live data as mail, and the extension detector 17 detects the extension. With this configuration, access to the website is not concentrated, and live data is not lost, or an excessive load is not applied to the server of the website.

  Next, another embodiment of the present invention will be described. FIG. 4 shows a block diagram of another embodiment of the present invention. In the figure, the same components as in FIG. In this embodiment, the speech recognition means of the program signal recording apparatus previously proposed by the inventor in Japanese Patent Application No. 2001-227324 is added to the above embodiment. Here, the above program signal recording apparatus proposed by the present inventor is a program signal recording apparatus that records only a program main part in a program signal composed of a program main part and a commercial part. The audio mode of the program being recorded is determined, and the determined audio mode is compared with the audio mode of the program detected from a separately acquired program. When the two match, the recording operation is performed, and when they do not match, the recording operation is stopped. It is the structure made to do.

  Therefore, in the video signal recording / reproducing apparatus 30 according to the present embodiment shown in FIG. 4, the two-channel audio signal multiplexed in the TV audio multiplex broadcast signal of the desired channel selected and received by the tuner 11 and its audio mode identification. Based on the control channel signal among the control channel signals, the sound mode determination unit 31 determines the sound mode of whether the two-channel sound signal is stereo sound, monaural sound, or bilingual sound.

  The audio mode comparison unit 32 acquires the first audio mode of the broadcast program of the desired channel to be reserved and recorded from the EPG data analyzed by the EPG analyzer 15, and further the second audio mode of the sports broadcast program immediately before that And a comparison is made as to whether or not the acquired first and second audio modes match the third audio mode of the broadcast program being viewed from the audio mode discriminating unit 31. Is notified to the CPU 33. Here, the audio mode comparison unit 32 outputs a comparison result of coincidence when the first audio mode and the second audio mode are different and the third audio mode and the first audio mode match. .

  Based on the actual service data of the existing service acquired by the extension detector 17 from the Web site, the CPU 33 is in a situation such as when the maximum extension time comes before the game ends or when the game ends before the maximum extension time. Accordingly, the start and end times of the scheduled recording program confirmed first are respectively changed to the time when the program reorganization is estimated, and further corrected to the time considering the comparison result from the audio mode comparison unit 32, and the DVR 13 Control recording start operation and recording end operation.

  Therefore, according to the present embodiment, for example, when the recording of the drama A in FIG. 2 is to be reserved, if the audio mode of the drama A and the audio mode of the news program are different, the CPU 33 can obtain the program reorganization. The recording of the DVR 13 is started near the start time of the drama A and when the same audio mode as the audio mode of the drama A is detected, so that the drama A can be recorded with higher accuracy than the above embodiment. You can record from the beginning.

  It should be noted that the present invention is not limited to the above-described embodiments, and for example, the recording / reproducing means can be similarly applied to analog VCRs such as VHS (registered trademark) other than DVR13. Further, the EPG data can be acquired not only from the broadcast wave VBI but also from the Internet or a digital broadcast data broadcast.

  In the above description of the embodiment, the recording reservation of the broadcast program after the sports broadcast has been described. However, if the sports broadcast itself is reserved for recording, the broadcast is extended based on the detection result of the extension detector 17. It can be automatically extended for recording. Of course, it is also possible to cancel the recording program if the extension detector 17 accesses the Web site one minute before the start of the broadcast and the game is stopped.

  Further, when it is desired to record a video signal of a program broadcast when the sports program is canceled, it is possible to select recording only when it is determined to cancel. Of course, this can be set by the user, but can be automatically executed in the case of a device having a favorite recording function (agent function) such as a known personal video recorder (PVR).

  In addition, if the recording reservation of the back program (broadcast program of a channel different from the channel of the baseball broadcast program) that originally did not overlap due to the extension of the baseball broadcast, and the recording reservation of the lowered program overlap, Sometimes, a message may be displayed on the OSD 16 to allow the user to select which recording reservation has priority. On the contrary, it is also possible to record the portion of the back program that was originally overlapped by the overlapped baseball broadcast extension. For example, a back program with a broadcast time of 30 minutes at the same broadcast start time as drama A's original broadcast start time of 21:00 will not overlap with drama A due to the 30-minute extension of baseball broadcast, so that recording is possible. It becomes possible.

  The CPU 18 determines whether there is a reserved recording of the back program. If there is, the CPU 18 determines the above-described recording priority selection display or back of the recording based on the detection result from the extension detector 17 and the broadcast start time and broadcast end time of the back program. Enables program recording operation.

  In the above embodiment, when the reserved recording channel is a sports program or a program after the sports program of the same channel, the maximum broadcast extension time of the sports program is acquired from the EPG data. However, it is also possible to first obtain the maximum broadcast extension time of a sports program that can be extended from EPG data regardless of the presence or absence of reserved recording.

  Furthermore, the present invention is applicable to both analog broadcasting and digital broadcasting if EPG data is present. Furthermore, the maximum extension time of the sports broadcast may be acquired, and the reserved recording for the program after that channel may be automatically recorded longer by the maximum extension time. In this case, there are two patterns A and B for carry-down.

  In the pattern A, as shown in the EPG data professional baseball program table shown in FIG. 2, when “(up to the maximum extension 0924, subsequent program delay)” is described, that is, <maximum extension and deferral> is When it is described, the difference between the normal end time 2054 and the maximum extension end time 0924 is 30 minutes as the broadcast maximum delay time. In the current program table, it is described in 12-hour notation, such as up to 0924, but this is interpreted as 2124 with reference to the normal end time of the program.

  In pattern B, as in an important program such as the Japanese series or the World Cup, when it is simply described as “(subsequent program deferral)”, that is, there is no description of the maximum extension, only <deferral> is described. When it is, a predetermined specified time, for example, 1 hour is set as the broadcast maximum delay time.

  By the way, a program whose broadcast time may be extended and a program of the same channel after the program are limited to programs within the day. Here, within the current day is not the time of midnight when the date and time is changed, but the end of the last program that spans the next day. As confirmation, there are cases of the following ac.

  a. When there is <broadcast end information> in the electronic program guide, it is limited to the program to which this broadcast end information is given. However, the broadcast end information is not given to the current EPG data.

  b. If there is no broadcast end information, it is the program until <broadcast canceled program blank> is found. If there is a time between the end time of a certain program and the start time of the next program, this blank will be the next day's program, and the program before the blank will be the current day.

  c. If neither the broadcast end information nor the broadcast-stopped program blank is found, the process ends until <program of a predetermined time>. For example, a program starting after 4:30 and ending after 5 o'clock is regarded as the first program of the following day, and the program before this program is regarded as the last program within the day.

It is a block diagram which shows one embodiment of this invention. It is a figure which shows an example of program organization. It is an example of the scoreboard display based on the actual condition data which the extension detector of the principal part of this invention acquires. It is a block diagram which shows other embodiment of this invention.

Explanation of symbols

10, 30 Video signal recording / reproducing apparatus 11 Tuner 12 Encoder (ENC)
13 Digital Video Recorder (DVR)
14 Decoder (DEC)
15 EPG analyzer 16 On-screen display (OSD)
17 Extension detector 18, 33 Central processing unit (CPU)
20 TV monitor 31 Audio mode discrimination unit 32 Audio mode comparison unit

Claims (2)

A recording means for recording a video signal of a television broadcast program;
Obtaining and displaying means for obtaining and displaying an electronic program guide;
Reservation recording setting means for setting reservation recording of a broadcast program of a desired channel;
Based on the description of the character string of the electronic program guide obtained by the obtaining / displaying unit, the broadcast program for which the scheduled recording is set by the scheduled recording setting unit is a program whose broadcasting time may be extended, or A program discriminating means for discriminating whether or not the program is the same channel after the program that may be extended;
When it is determined that the broadcast program for which the reserved recording is set is a program with the possibility of extending the broadcast time, or a program of the same channel after the program with the possibility of extension, by the program determination means, Broadcast maximum extension time acquisition means for acquiring a broadcast maximum extension time of a program having a possibility of extending the broadcast time from a description of a character string indicating the maximum extension time of the electronic program guide;
The broadcast maximum extension obtained by the broadcast maximum extension time acquisition means for the program having the possibility of extending the broadcast time and the video signal of the reserved recording program of the same channel after the program having the possibility of extending the broadcast time. Control means for controlling the recording means to be recorded by the recording means, which is longer by the time, and
The broadcast maximum extension time acquisition means further includes:
When the character string indicating the maximum extension time and the character string indicating the extension are described in the electronic program guide, the difference between the normal end time and the maximum extension end time is acquired as the maximum broadcast extension time. When the electronic program guide has no description of the character string indicating the maximum extension time and only the character string indicating the extension is described, a predetermined time is acquired as the maximum broadcast extension time. A video signal recording device. A video signal recording method used in a video signal recording apparatus,
A recording step of recording a video signal of a television broadcast program;
An acquisition / display step for acquiring and displaying an electronic program guide,
Scheduled recording setting step for setting scheduled recording of a broadcast program of a desired channel;
Based on the description of the character string of the electronic program guide obtained by the obtaining / displaying step, the broadcast program for which the reserved recording is set by the reserved recording setting step is a program whose broadcast time may be extended, or A program discriminating step for discriminating whether or not the program is the same channel after the program that may be extended;
When it is determined that the broadcast program set with the reserved recording is a program with the possibility of extending the broadcast time or a program of the same channel after the program with the possibility of extension by the program determination step, A broadcast maximum extension time acquisition step of acquiring a broadcast maximum extension time of a program that may be extended from the description of a character string indicating a maximum extension time of the electronic program guide;
The broadcast maximum extension obtained by the broadcast maximum extension time acquisition step of the video signal of the program having the possibility of extending the broadcast time and the reserved recording program of the same channel after the program having the possibility of extending the broadcast time. A control step for controlling the recording step to be recorded by the recording step, which is longer by the time,
The broadcast maximum extension time acquisition step further includes:
When the character string indicating the maximum extension time and the character string indicating the extension are described in the electronic program guide, the difference between the normal end time and the maximum extension end time is acquired as the maximum broadcast extension time. When the electronic program guide has no description of the character string indicating the maximum extension time and only the character string indicating the extension is described, a predetermined time is acquired as the maximum broadcast extension time. A video signal recording method.

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