JP2000078528A - Recording and reproducing device, its method and recording medium for recording and reproducing program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a recording and reproducing device by which same and superimposed video signals are detected by means of a frame unit and the video editing work of a recorded TV broadcasting signal is easily executed by recording same video position information from a video differential information storage part in a recording medium together with a digital broadcasting signal from a digital broadcasting signal receiving part. SOLUTION: A CPU 5 inputs video position information 105 from a recording and reproducing part 6 by the frame unit. The time code value of the frame to be recorded next is obtained based on inputted video position information 105 and the obtained time code value is outputted to the video differential information storage part 4 as a transfer indicating information 104. The CPU 5 inputs same video position information 103 from the video differential information storage part 4, generates a recording and reproducing control information 106 for indicating that the same video position information 103 is recorded in the recording medium 7 together with the frame to be recorded next and outputs it to a recording and reproducing part 6. Thus, the video editing work is easily executed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording / reproducing apparatus and a recording / reproducing method for receiving a broadcast signal of a digital broadcast or an analog broadcast and recording / reproducing the received broadcast signal on a recording medium.
And a recording medium on which a recording / reproducing program is recorded.

[0002]

2. Description of the Related Art In recent years, with the development of information compression technology and computer technology, it is common to digitize and process various information including video information and audio information. With the development of such digital technology, MPEG (Moving) has been developed in the field of broadcasting media such as public broadcasting and private broadcasting.
Digital broadcasting using information compression technology represented by the Picture Experts Group) standard is being implemented. Also,
A recording / reproducing apparatus including a VTR not only receives a program from a broadcast medium and records / reproduces the program on a recording medium, but also receives a commercial message portion (hereinafter, referred to as "") of the received program.
A device having a function of reproducing only the video and audio of the main program excluding the “CM portion” has been developed and put into practical use.
A mechanism for detecting a part and automatically excluding a CM part detected at the time of recording for recording or skipping the CM part detected at the time of reproduction and reproducing only the main program is mounted. Conventional recording and playback devices that support analog broadcasting include:
For example, as disclosed in JP-A-8-289244, luminance, chromatic dispersion, VPS (Video Program System) in television signals of the NTSC system and the PAL system, etc.
There is known an apparatus that detects a CM portion by using features of an analog video signal such as information. In the conventional recording / reproducing apparatus disclosed in Japanese Patent Application Laid-Open No. 8-317342, a method of detecting a non-speech part of an audio signal to detect a CM part, and a method of detecting a main program and a CM part generally in a monaural system, respectively. And a method of detecting a CM portion by detecting a difference in the format of the audio signal by utilizing the fact that the audio signal is composed of stereo audio signals.

Here, a conventional recording / reproducing apparatus and its recording / reproducing method will be specifically described with reference to FIG.
FIG. 8 is a block diagram showing a configuration of a conventional recording / reproducing apparatus. 8, a conventional recording / reproducing apparatus includes a tuner 30 that receives an analog television broadcast signal 200, a video signal processing unit 31 that is connected to the tuner 30, and processes a video signal 201 from the tuner 30, An image change detection unit 32 connected to the image signal processing unit 31 and detecting a change point of the image signal 201 is provided. Further, the conventional recording / reproducing apparatus is connected to the tuner 30 and is connected to the audio signal processing unit 33 for processing the audio signal 202 from the tuner 30;
The CM included in the television broadcast signal 200 is connected to the non-speech part detection unit 34 for detecting a non-speech part of the audio signal 202, the video change detection unit 32, and the non-speech part detection unit 34.
Commercial message part detector 3 for detecting a part
5, and a storage unit 36 for storing the CM position information 207 from the commercial message part detection unit 35. Further, the conventional recording / reproducing apparatus is provided with a recording / reproducing section 37 for recording / reproducing the television broadcast signal 200 from the tuner 30 on a recording medium 39, and a control section 38 for controlling the recording / reproducing section 37. ing.

[0004] The tuner 30 is a known analog television broadcasting signal 20 such as the NTSC system or the PAL system.
0 is received and output to the recording / reproducing unit 37. Further, the tuner 30 separates the received television broadcast signal 200 into a video signal 201 and an audio signal 202 and outputs them to the video signal processing unit 31 and the audio signal processing unit 33, respectively.
The video signal processing unit 31 extracts the luminance level of the input video signal 201 and outputs a video signal level 204 indicating the extracted luminance level to the video change detection unit 32. The video change detection unit 32 is configured by a brightness level change detection circuit, and detects a point in time when the brightness level changes by comparing two consecutive video signal levels 204 from the video change detection unit 32. The video change detecting unit 32 sets the detected time point as a change point of the video signal 201, and outputs video level change information 206 that is time information of the change point to the commercial message part detecting unit 35.

The audio signal processing section 33 outputs an audio signal level 203 indicating the volume (level) of the input audio signal 202 to the non-audio section detecting section 34. Silence part 3
Reference numeral 4 denotes a non-speech part detection circuit for detecting a non-speech part of the sound signal 202 based on the sound signal level 203 from the sound signal processing unit 33. The non-voice part detection unit 34 outputs to the commercial message part detection unit 35 voice level change information 205 indicating the start and end points of the detected non-voice part. The commercial message part detection unit 35 calculates a time interval between a plurality of non-speech parts based on the sound level change information 205 from the non-speech part detection unit 34. Further, the commercial message part detection unit 35 calculates the time intervals of a plurality of change points of the video signal 201 based on the video level change information 206 from the video change detection unit 32. Using these calculated time intervals, the commercial message part detection unit 35 detects a CM part included in the television broadcast signal 200 and acquires time information indicating the start and end points of the CM part. Also, the commercial message part detection unit 3
5 includes recording / reproduction control information 208 indicating the recording position of the video signal 201 on the recording medium 39, for example, the video signal 20.
The data is input from the recording / playback unit 37 via the control unit 38 in units of one frame. Thereby, the commercial message part detection unit 35 uses the acquired time information and the recording / reproduction control information 208 to record the detected recording medium 39 of the CM part.
The CM position information 207 indicating the above recording position is generated and output to the storage unit 36.

The recording / reproducing section 37 includes a magnetic head (not shown) and a motor (not shown) for driving a recording medium 39 composed of a magnetic tape mounted on the recording / reproducing apparatus. The recording / reproducing unit 37 transmits the television broadcast signal 200 from the tuner 30 to the recording medium 3 using a magnetic head.
Record in 9. At this time, the recording / reproducing unit 37 outputs the recording / reproducing control information 208 to the commercial message part detecting unit 35 via the control unit 38, as described above. The recording / reproducing unit 37 reproduces the television broadcast signal 200 from the recording medium 39 by the magnetic head according to the recording / reproducing control information 208 from the control unit 38, and outputs the television broadcast signal 200 to a display device (not shown) including a monitor and a speaker. Output. Thereby, the program of the television broadcast signal 200 described above is reproduced. The control unit 38 stores the C
The recording / reproducing unit 37 is controlled so that the CM portion detected based on the M position information 207 is skipped (jumped) and only the main program of the program is reproduced.

Hereinafter, the operation of the conventional recording / reproducing apparatus will be described. Analog television broadcast signal 2
When 00 is input to the tuner 30, the tuner 30 outputs the input television broadcast signal 200 to the recording / reproducing unit 37, and separates the television broadcast signal 200 into a video signal 201 and an audio signal 202. And
The tuner 30 outputs the video signal 201 and the audio signal 202 to the video signal processing unit 31 and the audio signal processing unit 33, respectively. The recording / reproducing unit 37 records the input television broadcast signal 200 on the recording medium 39, generates recording / reproducing control information 208 for each frame of the video signal 201, and outputs the generated information to the commercial message part detecting unit 35 via the control unit 38. I do.

On the other hand, the video signal processing section 31 extracts a video signal level 204 based on the luminance level of the input video signal 201 and outputs it to the video change detection section 32. Also,
The audio signal processing unit 33 extracts the audio signal level 203 based on the volume level of the input audio signal 202 and outputs the extracted audio signal level 203 to the audioless part detection unit 34. Subsequently, the video change detection unit 32 outputs the two video signal levels 204 that have been continuously input.
Is used to detect the point in time at which the luminance level of the video signal 201 changes (change point). Then, the video change detection unit 32
Generates video level change information 204 indicating the detected change point, and outputs the information to the commercial message part detection unit 35. In addition, the non-speech part detection unit 34 detects a non-speech part based on the input sound signal level 203.
Then, the non-voice portion detecting section 34 generates voice level change information 204 indicating the start and end points of the detected non-voice portion, and outputs the information to the commercial message portion detecting section 35.

Next, a commercial message portion detecting section 35 calculates a time interval between a plurality of non-voice portions based on the input audio level change information 205, and further calculates a plurality of change intervals based on the input video level change information 206. Calculate the time interval between points. Then, the commercial message part detection unit 35 detects the CM part in the television broadcast signal 200 using the calculated time interval, and detects the CM part.
Time information indicating the start and end points of the part is obtained. Thereafter, the commercial message part detection unit 35 transmits the time information and the recording / reproduction control information 208 from the control unit 38.
, The CM position information 207 of the detected CM part is generated and output to the storage unit 36. Then, the storage unit 36
The input CM position information 207 is held. With the above operation, the recording operation in the conventional recording / reproducing apparatus ends.

In the reproducing operation of the conventional recording / reproducing apparatus, the CM position information 207 is read from the storage section 36 to the control section 38 at the same time as the reproduction is started. Then, the control unit 3
8 is a CM specified by the CM position information 207
Recording medium 3 except for a part of the television broadcast signal 200
9 to read the television broadcast signal 200. Thereby, the video signal 201 and the audio signal 202 of the CM part are skipped, and the video signal 201 and the audio signal 2 of the main program are skipped.
Only 02 is played. As described above, in the conventional recording / reproducing apparatus and the recording / reproducing method thereof, when recording the received television broadcast signal 200, the
The video signal 201 is included in the received television broadcast signal 200 based on a time interval between a plurality of change points at which the luminance level of the video signal 201 changes and a time interval between a plurality of non-voice portions of the audio signal 202. The CM part was detected. Further, in this conventional recording / reproducing apparatus and its recording / reproducing method, the coma-chart metsage portion detecting section 35 detects the CM portion on the recording medium 39 based on the recording / reproducing control information 208 inputted from the recording / reproducing section 37. CM in
The position information 207 was generated and stored in the storage unit 36. Thus, in the conventional recording / reproducing apparatus and its recording / reproducing method, the control unit 38 stores the CM position information 2 from the storage unit 36.
07, the detected CM portion is skipped and only the main program of the program is reproduced.

[0011]

The conventional recording / reproducing apparatus and recording / reproducing method as described above correspond to the existing analog broadcasting and do not correspond to the digital broadcasting. For this reason, in the conventional recording / reproducing apparatus and its recording / reproducing method, even if a known D / A converter or the like is connected, a television broadcast signal of digital broadcasting can be received and recorded / reproduced. The superior features of digital broadcasting, such as the high quality of each frame of the signal, could not be fully utilized. Further, in the conventional recording / reproducing apparatus and the recording / reproducing method, only the point at which the level of the analog video signal changes in luminance or the like is examined to detect the CM portion. For this reason, in the conventional recording / reproducing apparatus and the recording / reproducing method thereof, the recorded video signal contains the same video overlapping the same video,
That is, there has been a problem that it is not possible to cope with a program which the broadcast media has recently implemented. Specifically, in the broadcast media, in order to recall the viewer's memory when the main program is resumed, a part of the main program broadcasted before the CM part is replaced by a few seconds from the beginning of the main program following the CM part. The program may be broadcast repeatedly for several tens of seconds. When such a program is received, the conventional recording / reproducing apparatus and the conventional recording / reproducing method cannot detect a part of the main program overlapping before and after the CM part. Recording and playback. For this reason, the conventional recording / reproducing apparatus and its recording / reproducing method have a problem that a part of the same main program is continuously recorded / reproduced. As a result, in the conventional recording / reproducing apparatus and its recording / reproducing method, for example, when performing a video editing operation on a program, it is necessary to search for and discriminate a part of the same main program, and the video editing operation requires time and labor. Cost. Further, the conventional recording / reproducing apparatus and its recording / reproducing method have a problem that when a program such as a stereo broadcast is received, the main program cannot be reliably detected because the main program cannot be distinguished from the CM portion. .

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem, and it is possible to detect the same overlapping video signal in a received television broadcast signal in frame units and record the same. An object of the present invention is to provide a recording / reproducing apparatus, a recording / reproducing method, and a recording medium on which a recording / reproducing program is recorded, which can easily perform a video editing operation of a television broadcast signal (program). Further, the present invention provides a recording / reproducing apparatus, a recording / reproducing method, and a recording medium on which a recording / reproducing program is recorded, which can reliably detect a CM portion of a program based on the same detected duplicate video signal. The purpose is to:

[0013]

According to the present invention, there is provided a recording / reproducing apparatus which receives a digital broadcast signal and outputs the digital broadcast signal and digital video information included in the digital broadcast signal. A video information storage unit that stores a plurality of frames of digital video information from the digital broadcast signal receiving unit and outputs the stored digital video information in units of frames, and a digital video information input from the digital broadcast signal receiving unit And the stored digital video information input from the video information storage unit is compared in units of frames, and based on the comparison result, a video difference information detection unit that generates the same video position information, A video difference information storage unit for storing the same video position information, and a digital broadcast signal from the digital broadcast signal receiving unit; The same image position information from the serial image difference information storage unit and a recording reproducing unit for recording on a recording medium. With this configuration, it is possible to detect the same overlapping video signal among the received television broadcast signals in frame units. Furthermore, the same video position information can be used as index information, and video editing work of a recorded television broadcast signal (program) can be easily performed.

According to another aspect of the present invention, there is provided a recording / reproducing apparatus which receives a digital broadcast signal, and outputs the digital broadcast signal and digital video information included in the digital broadcast signal; A video information storage unit for storing a plurality of frames of digital video information from a broadcast signal receiving unit and outputting the stored digital video information in frame units as digital video information; a digital video information input from the digital broadcast signal receiving unit and the video A video difference information detecting unit that compares the stored digital video information input from the information storage unit on a frame basis and generates the same video position information based on the comparison result, and the same video position from the video difference information detecting unit. A video difference information storage unit that stores information, and stores a plurality of identical video position information from the video difference information storage unit; An overlapping video section storage unit that outputs overlapping video section information indicating an overlapping video section based on the plurality of pieces of identical video position information stored, and the overlapping video section together with a digital broadcast signal from the digital broadcast signal receiving unit. A second recording / reproducing unit is provided for recording the overlapping video section information from the storage unit on a recording medium. With this configuration, it is possible to detect the same overlapping video signal among the received television broadcast signals in frame units. Further, the overlapping video section can be easily detected, and the video editing work of the recorded television broadcast signal (program) can be easily performed.

According to another aspect of the present invention, there is provided a recording / reproducing apparatus which receives a digital broadcast signal, and outputs the digital broadcast signal and digital video information included in the digital broadcast signal; A video information storage unit for storing a plurality of frames of digital video information from a broadcast signal receiving unit and outputting the stored digital video information in frame units as digital video information; a digital video information input from the digital broadcast signal receiving unit and the video A video difference information detecting unit that compares the stored digital video information input from the information storage unit on a frame basis and generates the same video position information based on the comparison result, and the same video position from the video difference information detecting unit. A video difference information storage unit that stores information, and stores a plurality of identical video position information from the video difference information storage unit; Based on the plurality of identical video position information, based on the overlapping video section storage unit that outputs overlapping video section information indicating overlapping video sections, based on the overlapping video section information from the overlapping video section storage unit, CM that detects a CM section and outputs CM section information indicating the CM section
A section detection unit; and a third recording / reproducing unit that records the CM section information from the CM section detection unit together with the digital broadcast signal from the digital broadcast signal receiving unit on a recording medium. With this configuration, it is possible to detect the same overlapping video signal among the received television broadcast signals in frame units. Further, the CM section can be reliably detected, and the video editing work of the recorded television broadcast signal (program) can be easily performed.

According to another aspect of the recording / reproducing apparatus of the invention, the third recording / reproducing unit stores the CM section information in a file on a recording medium for recording the digital broadcast signal or a file at a head position of the recorded digital broadcast signal. Record
With this configuration, the CM portion of the recorded television broadcast signal can be easily and reliably detected, and the video editing work of the recorded television broadcast signal (program) can be easily performed.

According to another aspect of the present invention, there is provided a recording / reproducing apparatus comprising: a digital broadcast signal storage section for temporarily storing a digital broadcast signal from the digital broadcast signal receiving section; Between the
The third recording / reproducing unit uses the input CM section information to
The CM section information is recorded at the head position of the digital broadcast signal designated as the M section. With this configuration, the CM portion of the recorded television broadcast signal can be reliably detected, and the video editing work of the recorded television broadcast signal (program) can be easily performed.

According to another aspect of the present invention, there is provided a recording / reproducing apparatus which receives a digital broadcast signal, and outputs the digital broadcast signal and digital video information included in the digital broadcast signal; A video information storage unit for storing a plurality of frames of digital video information from a broadcast signal receiving unit and outputting the stored digital video information in frame units as digital video information; A video difference information detecting unit that compares the stored digital video information input from the information storage unit on a frame basis and generates the same video position information based on the comparison result, and the same video position from the video difference information detecting unit. A video difference information storage unit that stores information, and stores a plurality of identical video position information from the video difference information storage unit; Based on the plurality of identical video position information, based on the overlapping video section storage unit that outputs overlapping video section information indicating overlapping video sections, based on the overlapping video section information from the overlapping video section storage unit, CM that detects a CM section and outputs CM section information indicating the CM section
A section detection unit for temporarily storing a digital broadcast signal from the digital broadcast signal receiving unit, and a CM portion of the stored digital broadcast signal based on the CM section information from the CM section detection unit; A digital broadcast signal storage unit for outputting a stored digital broadcast signal excluding one digital broadcast signal of a video section overlapping before and after the CM portion, and a storage medium for storing the stored digital broadcast signal from the digital broadcast signal storage unit And a fourth recording / reproducing unit for recording the data on the recording medium. With this configuration, the CM portion of the recorded television broadcast signal can be easily and reliably detected, and the detected CM portion and one of the video sections overlapping before and after the CM portion are detected. Digital broadcast signals can be automatically removed and recorded on a recording medium.

According to another aspect of the present invention, there is provided a recording / reproducing apparatus for receiving a digital broadcast signal and outputting the digital broadcast signal and digital video information included in the digital broadcast signal; A motion vector detecting unit that inputs digital video information from a broadcast signal receiving unit in units of frames, extracts and outputs motion vector information included in the digital video information, and a plurality of frames from the motion vector detecting unit. A motion vector information storage unit that stores the motion vector information of the motion vector information and outputs the motion vector information as a storage motion vector information on a frame basis; a motion vector information input from the motion vector detection unit; Information, and based on the comparison result, the same video position information is A motion vector difference information detecting unit, a video difference information storing unit that stores the same video position information from the motion vector difference information detecting unit, and the video difference information storage together with a digital broadcast signal from the digital broadcast signal receiving unit. Recording / reproducing unit for recording the same video position information from the recording unit on a recording medium. With such a configuration, the process of detecting the same overlapping video signal in the received television broadcast signal can be simplified, and the processing speed can be improved.

According to another aspect of the present invention, there is provided a recording / reproducing apparatus, wherein the video information storage unit inputs the same video position information from the video difference information storage unit and stores the stored digital video information for a plurality of frames. Among them, one frame is selected based on the input same image position information and output as stored digital image information. With this configuration,
The process of generating the same video position information can be reduced.

According to another aspect of the present invention, there is provided a recording / reproducing apparatus, wherein the motion vector information storage unit inputs the same video position information from the video difference information storage unit and stores the motion vector information for a plurality of frames. Among them, the motion vector information of one frame is selected based on the input same video position information and output as the stored motion vector information. With this configuration, it is possible to reduce the processing for generating the same video position information.

A recording / reproducing apparatus according to another aspect of the present invention includes an A / D converter for converting an analog television broadcast signal into the digital broadcast signal. With this configuration, the same overlapping video signal included in the analog television broadcast signal can be detected in frame units.

The recording / reproducing method according to the present invention includes a digital broadcast signal receiving step of receiving a digital broadcast signal and outputting the digital broadcast signal and digital video information included in the digital broadcast signal from a digital broadcast signal receiving unit.
A digital video information storage step of storing the digital video information for a plurality of frames in a video information storage unit; and inputting the digital video information stored in the video information storage unit in the digital video information storage step as stored digital video information. Comparing the input stored digital video information with the digital video information input this time from the digital broadcast signal receiving unit on a frame basis, and generating the same video position information based on the comparison result;
The same video position information storage step of storing the same video position information generated in the same video position information generation step in a video difference information storage unit, and from the video difference information storage unit together with the digital broadcast signal from the digital broadcast signal reception unit Recording the same image position information on a recording medium. With this configuration, it is possible to detect the same overlapping video signal among the received television broadcast signals in frame units. further,
The same video position information can be used as index information, and video editing work of a recorded television broadcast signal (program) can be easily performed.

According to another aspect of the present invention, there is provided a recording / reproducing method for receiving a digital broadcast signal and outputting the digital broadcast signal and digital video information included in the digital broadcast signal from a digital broadcast signal receiving unit. A receiving step; a digital video information storing step of storing the digital video information for a plurality of frames in a video information storage unit; and a digital video information storing the digital video information stored in the video information storage unit in the digital video information storing step. The same stored digital video information and the currently input digital video information from the digital broadcast signal receiving unit are compared on a frame basis, and the same video location information is generated based on the comparison result. Step, the same image position generated in the same image position information generating step The same image position information storing step of storing information in a video difference information storage unit; the overlapping image section information outputting step of outputting overlapping image section information indicating an overlapping image section based on a plurality of the same image position information; A recording step of recording the overlapping video section information together with a digital broadcast signal from a broadcast signal receiving unit on a recording medium. With this configuration, it is possible to detect the same overlapping video signal among the received television broadcast signals in frame units. further,
The overlapping video section can be easily detected, and the video editing work of the recorded television broadcast signal (program) can be easily performed.

According to another aspect of the present invention, there is provided a recording / reproducing method for receiving a digital broadcast signal and outputting the digital broadcast signal and digital video information included in the digital broadcast signal from a digital broadcast signal receiving unit. A receiving step; a digital video information storing step of storing the digital video information for a plurality of frames in a video information storage unit; and a digital video information storing the digital video information stored in the video information storage unit in the digital video information storing step. The same stored digital video information and the currently input digital video information from the digital broadcast signal receiving unit are compared on a frame basis, and the same video location information is generated based on the comparison result. Step, the same image position generated in the same image position information generating step The same video position information storing step of storing the information in the video difference information storage unit; the overlapping video section information outputting step of outputting the overlapping video section information indicating the overlapping video section based on the plurality of the same video position information; Based on the section information, a CM section is detected and the CM section is detected.
A CM section information output step of outputting CM section information indicating a section; and a recording step of recording the CM section information together with a digital broadcast signal from the digital broadcast signal receiving section on a recording medium. With this configuration, it is possible to detect the same overlapping video signal among the received television broadcast signals in frame units. Further, the CM section can be reliably detected, and the video editing work of the recorded television broadcast signal (program) can be easily performed.

In the recording / reproducing method according to another aspect of the present invention, in the recording step, the CM section information is recorded in a file on a recording medium for recording the digital broadcast signal or a file at a head position of the recorded digital broadcast signal. . With this configuration, the CM portion of the recorded television broadcast signal can be easily and reliably detected, and the recorded television broadcast signal (program) can be detected.
Video editing work can be performed easily.

[0027] According to another aspect of the present invention, there is provided a recording / reproducing method, comprising: before the recording step, a digital broadcast signal storing step of temporarily storing a digital broadcast signal from the digital broadcast signal receiving section in a digital broadcast signal storage section. Provided,
In the recording step, C
The CM section information is recorded at the head position of the digital broadcast signal designated as the M section. With this configuration, the CM portion of the recorded television broadcast signal can be reliably detected, and the video editing work of the recorded television broadcast signal (program) can be easily performed.

According to another aspect of the present invention, there is provided a recording / reproducing method for receiving a digital broadcast signal and outputting the digital broadcast signal and digital video information included in the digital broadcast signal from a digital broadcast signal receiving unit. A receiving step; a digital video information storing step of storing the digital video information for a plurality of frames in a video information storage unit; and a digital video information storing the digital video information stored in the video information storage unit in the digital video information storing step. The same stored digital video information and the currently input digital video information from the digital broadcast signal receiving unit are compared on a frame basis, and the same video location information is generated based on the comparison result. Step, the same image position generated in the same image position information generating step The same video position information storing step of storing the information in the video difference information storage unit; the overlapping video section information outputting step of outputting the overlapping video section information indicating the overlapping video section based on the plurality of the same video position information; Based on the section information, a CM section is detected and the CM section is detected.
Outputting a CM section information indicating a section, temporarily storing the digital broadcast signal from the digital broadcast signal receiving section, and outputting the stored digital broadcast signal based on the CM section information. A storage digital broadcast signal output step of outputting a storage digital broadcast signal excluding a CM portion and one digital broadcast signal of a video section overlapping before and after the CM portion, and recording the storage digital broadcast signal on a recording medium Recording step. With this configuration, the CM portion of the recorded television broadcast signal can be easily and reliably detected, and the detected CM portion and one of the video sections overlapping before and after the CM portion are detected. Digital broadcast signals can be automatically removed and recorded on a recording medium.

According to another aspect of the present invention, there is provided a recording / reproducing method for receiving a digital broadcast signal and outputting the digital broadcast signal and digital video information included in the digital broadcast signal from a digital broadcast signal receiving unit. A receiving step, inputting digital video information from the digital broadcast signal receiving unit in units of frames, and outputting a motion vector information included in the digital video information from the motion vector detecting unit to a motion vector output step; The motion vector information storage step of storing the motion vector information in the motion vector information storage unit, the motion vector information stored in the motion vector information unit in the motion vector information storage step is input as storage motion vector information, and is input. This time from the motion vector information and the motion vector detection unit The same motion vector information is compared with the input motion vector information on a frame basis, and the same video position information generating step of generating the same video position information based on the result of the comparison is performed. A storage step of storing the same video position information stored in a storage unit; and a recording step of storing the same video position information from the video difference information storage unit together with the digital broadcast signal from the digital broadcast signal receiving unit on a recording medium. With such a configuration, the process of detecting the same overlapping video signal in the received television broadcast signal can be simplified, and the processing speed can be improved.

According to another aspect of the present invention, there is provided a recording / reproducing method, wherein the video information storage unit inputs the same video position information from the video difference information storage unit and stores the digital video information for a plurality of stored frames. Among them, one frame is selected based on the input same image position information and output as stored digital image information. With this configuration,
The process of generating the same video position information can be reduced.

According to another aspect of the present invention, there is provided a recording / reproducing method, wherein the motion vector information storage unit inputs the same video position information from the video difference information storage unit and stores the motion vector information for a plurality of stored frames. Among them, the motion vector information of one frame is selected based on the input same video position information and output as the stored motion vector information. With this configuration, it is possible to reduce the processing for generating the same video position information.

The recording / reproducing method according to another aspect of the invention includes an A / D conversion step of converting an analog television broadcast signal into the digital broadcast signal before the digital broadcast signal receiving step. With this configuration, the same overlapping video signal included in the analog television broadcast signal can be detected in frame units.

A recording medium on which the recording / reproducing program of the present invention is recorded receives a digital broadcast signal, and outputs the digital broadcast signal and digital video information contained in the digital broadcast signal from a digital broadcast signal receiving unit. A broadcast signal receiving step, a digital video information storing step of storing the digital video information for a plurality of frames in a video information storage section, and a digital video information storing the digital video information stored in the video information storage section in the digital video information storage step. The same image position for inputting as image information, comparing the input stored digital image information with the digital image information input this time from the digital broadcast signal receiving unit on a frame basis, and generating the same image position information based on the comparison result. Information generation step, the same video position information generation step Storing the same image position information in the image difference information storage unit, and storing the same image position information from the image difference information storage unit together with the digital broadcast signal from the digital broadcast signal receiving unit on a recording medium; Recording step. With this configuration, it is possible to detect the same overlapping video signal among the received television broadcast signals in frame units. Furthermore, the same video position information can be used as index information, and video editing work of a recorded television broadcast signal (program) can be easily performed.

A recording medium on which the recording / reproducing program of the invention according to another aspect is recorded receives a digital broadcast signal,
A digital broadcast signal receiving step of outputting the digital broadcast signal and digital video information included in the digital broadcast signal from a digital broadcast signal receiving unit; and a digital video storing a plurality of frames of the digital video information in a video information storage unit. In the information storage step, the digital video information stored in the video information storage unit in the digital video information storage step is input as stored digital video information, and the input stored digital video information and the digital broadcast signal received this time from the digital broadcast signal reception unit Comparing the digital image information with the frame unit, and generating the same image position information based on the comparison result; the same image position information generated in the same image position information generating step; Storing the same image position information stored in Outputting overlapping video section information indicating the overlapping video section based on the video position information; and recording the overlapping video section information on a recording medium together with a digital broadcast signal from the digital broadcast signal receiving unit. A recording step is provided. With this configuration, it is possible to detect the same overlapping video signal among the received television broadcast signals in frame units. Furthermore, the overlapped video section can be easily detected, and the recorded television broadcast signal (program)
Video editing work can be performed easily.

A recording medium on which a recording / reproducing program according to another aspect of the invention is recorded receives a digital broadcast signal,
A digital broadcast signal receiving step of outputting the digital broadcast signal and digital video information included in the digital broadcast signal from a digital broadcast signal receiving unit; and a digital video storing a plurality of frames of the digital video information in a video information storage unit. In the information storage step, the digital video information stored in the video information storage unit in the digital video information storage step is input as stored digital video information, and the input stored digital video information and the digital broadcast signal received this time from the digital broadcast signal reception unit Comparing the digital image information with the frame unit, and generating the same image position information based on the comparison result; the same image position information generated in the same image position information generating step; Storing the same image position information stored in Based on the image position information, duplicate video duration information output step of outputting a duplicate image section information indicating the overlapping image section, on the basis of the overlapping image section information, C
A CM section information output step of detecting an M section and outputting CM section information indicating the CM section; and the CM section together with a digital broadcast signal from the digital broadcast signal receiving section.
There is provided a recording step of recording section information on a recording medium. With this configuration, it is possible to detect the same overlapping video signal among the received television broadcast signals in frame units. Further, the CM section can be reliably detected, and the video editing work of the recorded television broadcast signal (program) can be easily performed.

[0036] In the recording medium on which the recording / reproducing program of the invention according to another aspect is recorded, in the recording step, a file on a recording medium for recording the digital broadcast signal or a file at a head position of the recorded digital broadcast signal is stored in the recording medium. Record section information. With this configuration, the CM portion of the recorded television broadcast signal can be easily and reliably detected, and the video editing work of the recorded television broadcast signal (program) can be easily performed.

According to another aspect of the present invention, there is provided a recording medium storing a recording / reproducing program according to another aspect of the present invention, wherein a digital broadcast signal from the digital broadcast signal receiving section is temporarily stored in a digital broadcast signal storage section before the recording step. Providing a broadcast signal accumulation step, wherein in the recording step,
The CM section information is recorded at the head position of the digital broadcast signal designated as the CM section by the CM section information. With this configuration, the CM portion of the recorded television broadcast signal can be reliably detected, and the video editing work of the recorded television broadcast signal (program) can be easily performed.

A recording medium on which a recording / reproducing program of the invention according to another aspect is recorded receives a digital broadcast signal,
A digital broadcast signal receiving step of outputting the digital broadcast signal and digital video information included in the digital broadcast signal from a digital broadcast signal receiving unit; and a digital video storing a plurality of frames of the digital video information in a video information storage unit. In the information storage step, the digital video information stored in the video information storage unit in the digital video information storage step is input as stored digital video information, and the input stored digital video information and the digital broadcast signal received this time from the digital broadcast signal reception unit Comparing the digital image information with the frame unit, and generating the same image position information based on the comparison result; the same image position information generated in the same image position information generating step; Storing the same image position information stored in Based on the image position information, duplicate video duration information output step of outputting a duplicate image section information indicating the overlapping image section, on the basis of the overlapping image section information, C
A CM section information output step of detecting an M section and outputting CM section information indicating the CM section; temporarily storing a digital broadcast signal from the digital broadcast signal receiving unit;
Based on the CM section information, a stored digital broadcast signal for outputting a stored digital broadcast signal excluding a CM section of a stored digital broadcast signal and one digital broadcast signal of a video section overlapping before and after the CM section. A broadcast signal output step; and a recording step of recording the stored digital broadcast signal on a recording medium. With such a configuration, the CM of the recorded television broadcast signal can be used.
The part can be easily and reliably detected, and one digital broadcast signal of a video section overlapping before and after the detected CM part can be automatically removed and recorded on a recording medium. .

A recording medium on which the recording / reproducing program of the invention according to another aspect is recorded receives a digital broadcast signal,
A digital broadcast signal receiving step of outputting the digital broadcast signal and digital video information included in the digital broadcast signal from a digital broadcast signal receiving unit; inputting digital video information from the digital broadcast signal receiving unit in frame units; A motion vector output step of outputting the motion vector information included in the digital video information from the motion vector detection unit; a motion vector information storage step of storing the motion vector information for a plurality of frames in a motion vector information storage unit; In the information storage step, the motion vector information stored in the motion vector information section is input as stored motion vector information, and the input motion vector information and the motion vector information input this time from the motion vector detection section are compared in frame units. The same screen based on the comparison result. The same video position information generating step of generating position information, the same video position information storage step of storing the same video position information generated in the same video position information generation step in a video difference information storage unit, and the digital broadcast signal receiving unit. Recording the same video position information from the video difference information storage unit together with the digital broadcast signal on a recording medium. With such a configuration, the process of detecting the same overlapping video signal in the received television broadcast signal can be simplified, and the processing speed can be improved.

According to another aspect of the present invention, there is provided a recording medium recording a recording / reproducing program according to another aspect of the present invention, wherein the video information storage unit receives the same video position information from the video difference information storage unit and stores the same video position information for a plurality of frames. , One frame is selected based on the input same video position information and output as stored digital video information. With this configuration, it is possible to reduce the processing for generating the same video position information.

According to another aspect of the present invention, there is provided a recording medium storing a recording / reproducing program according to another aspect of the present invention, wherein the motion vector information storage unit receives the same video position information from the video difference information storage unit and stores the plurality of frames. The motion vector information of one frame is selected based on the input same video position information among the motion vector information of the minute, and is output as the stored motion vector information. With this configuration, it is possible to reduce the processing for generating the same video position information.

According to another aspect of the present invention, there is provided a recording medium storing a recording / reproducing program according to another aspect of the present invention, wherein before the digital broadcast signal receiving step, an A / D conversion step of converting an analog television broadcast signal into the digital broadcast signal is performed. Provided. With this configuration, the same overlapping video signal included in the analog television broadcast signal can be detected in frame units.

[0043]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments showing a recording / reproducing apparatus and a recording / reproducing method of the present invention will be described below with reference to the drawings. In the following description of the first to fifth embodiments, for example, a digital television broadcast signal (hereinafter, referred to as "") in which a bit stream of video data and audio data is constituted by an MPEG transport stream (Transport Stream). A description will be given of a case where a digital broadcast signal is received and recorded and reproduced. This MPEG transport stream is
This is a bit stream of data that has been compression-encoded based on the MPEG2 standard (ISO / IEC 13818: 1996). Further, specific examples of the digital broadcasting using the digital broadcasting signal as described above include the next-generation digital broadcasting in the United States, A
TV (Advanced Television) and EP-DVB (European Project fo
r Digital Video Broadcasting) and digital CS broadcasting using a communication satellite (Communications Satellite).

<< First Embodiment >> [Configuration of Recording / Reproducing Apparatus] FIG. 1 is a block diagram showing the configuration of a recording / reproducing apparatus according to a first embodiment of the present invention. FIG.
As shown in FIG. 1, a recording / reproducing apparatus according to the present embodiment includes a digital broadcast signal receiving unit 1 for receiving a digital broadcast signal 100, and digital video information 1 in the received digital broadcast signal 100.
01 and the stored digital video information 101
And the same video position information 103 based on the digital video information 101 from the digital broadcast signal receiving unit 1 and the stored digital video information 102 from the video information storage unit 2.
Is provided. Further, in the recording / reproducing apparatus of the present embodiment, the video difference information storage unit 4 for storing the same video position information 103 from the video difference information detection unit 3, the CPU 5 for generating the recording / reproduction control information 106 described later, and the CPU 5 Record / playback control information 1
06, a recording / reproducing unit 6 for recording / reproducing the recording information 107 on the recording medium 7 is provided. The recording medium 7 is a DVD (Digital Versatile Disk) -RAM or D
Optical disk media such as VD-R (Recordable), MO
(MagnetoOptical) It is constituted by a disk or a hard disk device, and is built in or detachable from the recording / reproducing apparatus.

The digital broadcast signal receiving section 1 is constituted by a digital broadcast tuner and receives a digital broadcast signal 100. The digital broadcast signal receiving section 1 outputs the received digital broadcast signal 100 to the recording / reproducing section 6 and outputs digital video information 101 included in the digital broadcast signal 100 to the video difference information detecting section 3. More specifically, the digital broadcast signal receiving unit 1 includes the above-described MPE.
An elementary video stream (Elementary Video Stream) defined by the G2 standard is
It is separated as 1 and output to the video difference information detection unit 3 in frame units. The video information storage unit 2 is configured by a data recording device including, for example, a semiconductor memory or a hard disk device, and stores the digital video information 101 for a plurality of frames from the video difference information detection unit 3. The video information storage unit 2 stores, for example, 9 frames corresponding to a maximum number of frames of 5 minutes.
The digital video information 101 for 000 frames can be stored. Video information storage unit 2
When the digital video information 101 for one frame is input, the stored digital video information 101 is sequentially output to the video difference information detection unit 3 as the stored digital video information 102 in frame units. In addition, the ring buffer method,
That is, by using a method of managing and storing data using the next address of the last address as the first address, for example, the bit rate of the digital video information 101 becomes 1
Even at 0 Mbps, the video information storage unit 2
With the capacity of G bits, the digital video information 101 for 9000 frames can be stored.

The video difference information detecting section 3 is composed of, for example, a semiconductor comparator and a DSP (Digital Signal Processor), receives the digital video information 101 from the digital broadcast signal receiving section 1, and stores the stored digital video information from the video information storage section 2. Information 102 is sequentially input in frame units. The video difference information detection unit 3 receives the digital video information 101 input this time.
Is compared with each of the stored digital video information 102 sequentially input to determine whether the digital video information 101 is the same video (frame) as the stored digital video information 102. More specifically, the video difference information detection unit 3
Calculates the sum of bit differences between the digital video information 101 and each of the stored digital video information 102. When the sum of the calculated differences is 0, the video difference information detection unit 3 determines that the digital video information 101 and the stored digital video information 102 input this time are the same frame. further,
Also when the sum of the differences is equal to or smaller than the threshold value N (N is an integer), the video difference information detection unit 3 determines that the frames are the same in consideration of the quantization error and the digital noise.
The video difference information detection unit 3 uses the address information of the digital video information 101 and the stored digital video information 102 determined to be the same frame, and
3 is generated and output to the video difference information storage unit 4. On the other hand, when the sum of the calculated differences exceeds the threshold value N in the result of the bit comparison with all the stored digital video information 102, the video difference information detection unit 3 determines the same as the digital video information 101 input this time. It is determined that no frame exists, and using the address information of the digital video information 101,
The same image position information 103 is generated and the image difference information storage unit 4
Output to The same image position information 103 is, for example, the digital image information 10 determined to be the same frame.
1 and a time code value uniquely assigned to each frame of the stored digital video information 102.
The specific threshold value N is, for example, a value that is 0.1% with respect to one entire frame.

The video difference information storage unit 4 is constituted by a data recording device including, for example, a semiconductor memory and a hard disk device, and inputs and stores the same video position information 103 from the video difference information detection unit 3. Further, the video difference information storage unit 4 inputs the transfer instruction information 104 including the above time code value from the CPU 5 for each frame. The video difference information storage unit 4 searches the stored same video position information 103 for the same video position information 103 having the same time code value as the input transfer instruction information 104, and finds the corresponding same video The position information 103 is output to the CPU 5. The CPU 5 is configured using a general-purpose CPU of a computer or a built-in microcomputer, generates recording / reproducing control information 106 for controlling the recording / reproducing unit 6 for each frame, and outputs the information to the recording / reproducing unit 6.

More specifically, when the recording / reproducing apparatus of the present embodiment performs a recording operation, the CPU 5 inputs the video position information 105 from the recording / reproducing unit 6 for each frame. The video position information 105 includes the time code value of the frame of the digital video information 101 that is currently being recorded on the recording medium 7 or has been recorded. Therefore, CPU5
Acquires the time code value of the frame to be recorded next, based on the input video position information 105, and outputs the obtained time code value to the video difference information storage unit 4 as the transfer instruction information 104. The CPU 5 receives the same video position information 103 from the video difference information storage unit 4, and instructs the same video position information 103 to be recorded on the recording medium 7 together with the next frame to be recorded.
06 is output to the recording / reproducing unit 6. Further, when the recording / reproducing apparatus of the present embodiment performs a reproducing operation, the CPU 5 inputs the video position information 105 from the recording / reproducing unit 6 for each frame. The video position information 105 includes the time code value of the frame of the digital video information 101 that is being reproduced on the recording medium 7 at the current time or the reproduction has been completed. Therefore, the CPU 5 acquires the time code value of the next frame to be reproduced based on the input video position information 105, generates the recording / reproduction control information 106 including the time code value, and generates the recording / reproduction control information 106. Output to Furthermore, CP
When the input video position information 105 includes the time code value of the same frame (the same video position information 103), for example, U5 sets at least the time code value of the same frame as the frame being played back or the frame whose playback has ended. The recording / reproduction control information 106 for instructing to control the display is generated and output to the recording / reproduction unit 6.

The recording / reproducing unit 6 is composed of, for example, a DVD-RAM recorder, a DVD-R drive, or a magnetic optical disk device, and is connected to a display device (not shown) including a monitor and a speaker. The recording / reproducing unit 6 includes a CP
The recording information 107 including the digital broadcast signal 100 from the digital broadcast signal receiving section 1 is recorded and reproduced on the recording medium 7 based on the recording and reproduction control information 106 from U5. Further, as described above, the recording / reproducing unit 6 transmits the video position information 105 including the time code value to the CPU 5 for each frame.
Output to The video position information 105 includes mode information indicating the current operation. In the above description, the configuration in which the generated identical video position information 103 is recorded on the recording medium 7 together with the overlapping frames has been described.
May be collectively recorded in one file in a predetermined recording area in the recording medium 7. In particular, it is preferable to record in a file on the recording medium 7 which is read first at the time of the reproducing operation or a file at the head position of the recorded digital broadcast signal 100. With this configuration, the CP
U5 can omit the processing operation of outputting and processing the transfer instruction information 104 for each frame, and can reduce the processing load on the CPU 5. During the reproducing operation, the CPU 5
By reading the file of the same video position information 103, the same overlapping frame can be confirmed in advance, and it is possible to easily skip one frame of the overlapping frame and reproduce it.

[Operation of Recording / Reproducing Apparatus] The operation of the recording / reproducing apparatus of this embodiment will be described below with reference to FIGS. In the following description, a case will be described in which the video position information 105 including the time code value of the frame for which recording or reproduction has been completed at this time is output from the recording / reproduction unit 6 to the CPU 5. The number of frames per second is 30
The case of a frame will be described. First, a recording operation in the recording / reproducing apparatus of the present embodiment will be described. FIG.
FIG. 3 is an explanatory diagram showing a specific example of information used in the recording and reproducing device shown in FIG. 1 and 2, when the digital broadcast signal receiving unit 1 receives the digital broadcast signal 100, the digital broadcast signal receiving unit 1 outputs the received digital broadcast signal 100 to the recording / reproducing unit 6. At the same time, the digital broadcast signal receiving unit 1
, And outputs the digital video information 101 to the video difference information detection unit 3 in frame units.

Subsequently, the video difference information detecting section 3 outputs the input digital video information 101 to the video information storage section 2 and holds the input digital video information 101 to store the stored digital video information from the video information storage section 2. Bit comparison with the information 102 is performed on a frame-by-frame basis, and the sum of the differences of each bit is calculated. The video difference information detection unit 3 determines that the digital video information 101 and the stored digital video information 102 are the same frame when the sum of the calculated differences is 0 or the threshold N or less. If it is determined that the frames are the same, the video difference information detecting unit 3 determines the digital video information 101 and the stored digital video information 10.
2 respectively, for example, (01: 03: 15: 00) and (01:02:15:
00) and (0) as the same video position information 103.
1: 02: 15: 00, 01: 03: 15: 00) to the video difference information storage unit 4. On the other hand, if the sum of the calculated differences exceeds the threshold value N in the result of the bit comparison with all the stored digital video information, the video difference information detection unit 3 sets the same frame as the digital video information 101 input this time. Is determined not to exist. Thereafter, the video difference information detection unit 3 generates, for example, (undefined, 01: 03: 15: 01) as the same video position information 103 using the address information of the digital video information 101, and generates the video difference information storage unit 4. Output to Note that a specific numerical value, for example, “0” is inserted in this undefined portion. The time code value is address information of the digital video information 101 indicating a time to reproduce each frame in the above-described elementary video stream and an order of the time in frame units. Specifically, for example, the time code value (01: 02: 15: 02) indicates that it is the third frame to be reproduced 1 hour, 2 minutes, and 15 seconds after the first frame of the elementary video stream. I have.

In the video information storage unit 2, one frame of digital video information 101 is output from the video difference information detection unit 3.
Is input, all digital video information 101 stored at that time is sequentially output to the video difference information detection unit 3 as stored digital video information 102 one frame at a time. Specifically, the video information storage unit 2 stores the digital video information 101 at the address indicated by the first pointer to the digital video information 101 at the address indicated by the last pointer as the stored digital video information 102 to the video difference information detection unit 3. Output sequentially. Thereafter, the video information storage unit 2 stores the digital video information 101 input this time in the storage area specified by the address of the last pointer. When the storage area in the video information storage unit 2 holds the above-described digital video information 101 for 9000 frames, the digital video information 101 input this time is replaced with the digital video information 101 stored first. Remember.

Subsequently, the video difference information storage unit 4 stores the same video position information 103 input from the video difference information detection unit 3. Thereafter, the video difference information storage unit 4 stores the CPU 5
When the transfer instruction information 104 is input from the server, all the stored same video position information 103 is searched, and if the same video position information 103 having the same time code value as the transfer instruction information 104 exists, Same video position information 10
3 is output to the CPU 5. More specifically, when (01: 03: 15: 00) is input as the transfer instruction information 103 from the CPU 5, the video difference information storage unit 4 searches all stored identical video positions 103, The same video position information 103 (01: 02: 15: 00, 01:01) having the same time code value as the input transfer instruction information 104
03:15:00) to the CPU 5.

On the other hand, the recording / reproducing section 6 records the digital broadcast signal 100 from the digital broadcast signal receiving section 1 on the recording medium 7 based on the recording / reproducing control information 106 from the CPU 5. At this time, the recording / reproducing unit 6 sets the time code value of the frame of the digital video information 101 whose recording has been completed at the present time, the time code value of the same frame as the frame, and the video position information 105 including mode information, for example, (01) : 03:14:29, undefined, record completed) to C
Output to PU5. Next, the CPU 5 acquires the time code value of the frame to be recorded next, for example, (01: 03: 15: 00) from the input video position information 105 and outputs it to the video difference information storage unit 4 as the transfer instruction information 104. . Then, as described above, after the video difference information storage unit 4 outputs the same video position information 103 to the CPU 5,
The CPU 5 uses the same image position information 103 input,
The recording / reproduction control information 106 including the time code value of the same frame as the frame to be recorded next, the time code value of the frame to be recorded next, and mode information, for example, (0
1: 02: 15: 00, 01: 03: 15: 00, recording). Subsequently, the recording / reproducing unit 6
Then, based on the recording / reproduction control information 106 from the CPU 5, the recording information 107 including the data of the digital broadcast signal 100, the time code value of the frame to be recorded, and the time code value of the same frame as the frame to be recorded, for example, ( Digital video information, 01: 02: 15: 00, 0
1: 03: 15: 00) on the recording medium 7.

Next, the reproducing operation of the recording / reproducing apparatus of this embodiment will be described. The recording / reproducing unit 6 reproduces the recording medium 7 to record data 107 including data of the digital broadcast signal 100, a time code value of the reproduced frame, and a time code value of the same frame as the reproduced frame.
For example, (digital video information, 01: 02: 15: 01,
(Undefined). Then, the recording / reproducing unit 6 outputs the data of the digital broadcast signal 100 included in the recording information 107 to an external display device or the like. At the same time, the recording / reproducing unit 6 sets the time code value of the same frame as the frame whose reproduction has been completed at this time, the time code value of the frame whose reproduction has been completed at this time, and the video position information 105 composed of mode information. , 01: 02: 15: 0
1, reproduction complete) to the CPU 5. Next, the CPU 5 determines the time code value of the next frame to be reproduced, for example, (01:02:15:
02), the recording and reproduction control information 106 including the time code value of the same frame as the frame to be reproduced next, the time code value of the frame to be reproduced next, and mode information, for example, (undefined, 01 : 02: 15: 02,
Reproduction) is output to the recording / reproducing unit 6. Subsequently, the recording / reproducing unit 6 reproduces the recording information 107 having the time code value of the frame to be reproduced next, based on the recording / reproducing control information 106 from the CPU 5.

As described above, the recording / reproducing apparatus of this embodiment
In the recording / reproducing method, the video difference information detecting unit 3 includes the digital video information 101 from the digital broadcast signal receiving unit 1,
It compares the digital video information 101 (102) received before the digital video information 101 and stored (stored) in the video information storage unit 2. Video difference information detector 3
Detects and determines whether or not the same overlapping frame exists based on the comparison result. Further, the video difference information detection unit 3 generates the same video position information 103 from the address information of those frames and stores the same in the video difference information storage unit 4. The recording / reproducing unit 6
Digital broadcast signal 10 from digital broadcast signal receiving unit 1
The same image position information 103 from the image difference information storage unit 4 is recorded on the recording medium 7 together with 0. Thereby, in the recording / reproducing apparatus and the recording / reproducing method of the present embodiment, for example, when performing a video editing operation, the same video position information 103 can be used as index information, and the video editing operation can be easily performed. it can. In the above description, the address information of the digital video information 101 is
Although the case of using the time code value assigned to each frame has been described, instead of the time code value, offset address information (byte value) from the head in the received digital broadcast signal 100 or the absolute value of the recording medium 7 is used. A configuration using address information or the like may be used.

<< Second Embodiment >> [Configuration of Recording / Reproducing Apparatus] FIG. 3 is a block diagram showing a configuration of a recording / reproducing apparatus according to a second embodiment of the present invention. In the present embodiment, in the configuration of the recording / reproducing apparatus, overlapping video section information indicating an overlapping video section is generated based on a plurality of pieces of the same video position information, and is recorded on a recording medium together with the received digital broadcast signal. Other parts are
Since they are the same as those of the first embodiment, their duplicate description will be omitted. As shown in FIG. 3, in the recording / reproducing apparatus of the present embodiment, the video information storage unit 20 receives the digital video information 101 and the video difference information storage unit 4 from the video difference information detection unit 3.
, The same image position information 103 is input. Further, in the recording / reproducing apparatus of the present embodiment, the overlapping video section storage unit 8 and the digital broadcast signal storage unit 9 include the CPU 21.
And a second recording / reproducing unit 22 for recording / reproducing the second recording information 113 on / from the recording medium 7. The video information storage unit 20 is constituted by a data recording device including, for example, a semiconductor memory and a hard disk device, and receives a plurality of frames of digital video information 10 from the video difference information detection unit 3.
1 is stored. In addition, the video information storage unit 20 includes, among the stored digital video information 101 based on the same video position information 103 input from the video difference information storage unit 4,
First, an appropriate one frame can be selected and output to the video difference information detection unit 3 as the stored digital video information 102. Thereby, the comparison processing operation in the video difference information detection unit 3 can be reduced (details will be described later).
By using the video information storage unit 20 of the present embodiment instead of the video information storage unit 4 shown in FIG. 1, the above-described comparison processing operation can be reduced in the recording / reproducing apparatus of the first embodiment. It is possible to get

The CPU 21 is constituted by using a general-purpose CPU of a computer or a built-in microcomputer as in the first embodiment. It is generated and output to the second recording / reproducing unit 22. Further, the CPU 21 outputs the transfer instruction information 103 to the video difference information storage unit 4 so that the same video position information 103 of the next frame to be recorded is output from the video difference information storage unit 4 to the video information storage unit 20 in frame units. Is done. The CPU 21 not only generates the recording / reproduction control information 106 using the input identical video position information 103, but also outputs the identical video position information 103 to the overlapping video section storage unit 8. Further, the CPU 21
When the same video position information 103 having two time code values, that is, the presence of the same duplicated frame is detected, the digital broadcast signal 100 is stored in the digital broadcast signal storage unit 9 and transmitted to the second recording / reproducing unit 22. The storage instruction information 112 for stopping the output is output. Further, it also generates and outputs recording / reproduction control information 106 for instructing the second recording / reproducing unit 22 to stop the recording operation.

The overlapped video section storage section 8 is constituted by a data recording device including, for example, a semiconductor memory and a hard disk drive. Output to More specifically, when the same video position information 103 indicating that there is an overlapping frame is input, the overlapping video section storage unit 8 stores the same video position information 103 indicating that there is no overlapping frame. Of all the same video position information 103. The duplicate video section storage unit 8 stores the same video position information 1
03 are output together as overlapping video section information 111. As a result, the address information of the start and end frames in the overlapping video section including a plurality of overlapping frames is output to the second recording / reproducing unit 22.

The digital broadcast signal storage unit 9 is constituted by a data recording device including a buffer memory, and temporarily stores the digital broadcast signal 100 from the digital broadcast signal receiving unit 1. Further, the digital broadcast signal storage unit 9
Based on the storage instruction information 112 from the CPU 21, the stored digital broadcast signal 100 is stored in the second recording / reproducing unit 22.
Output to Thereby, the second recording / reproducing unit 22 at the subsequent stage
Can easily record the overlapping video section information 111 at the head position of the digital broadcast signal 100 designated as the overlapping video section by the input overlapping video section information 111. The second recording / reproducing unit 22 is, for example, a DVD-R
It is composed of an AM recorder, a DVD-R drive or a magnetic optical disk device, and is connected to a display device (not shown) including a monitor and a speaker. The second recording / playback unit 22 includes a digital broadcast signal 100 from the digital broadcast signal storage unit 9 based on the recording / playback control information 106 from the CPU 21 and the overlapped video section information 111 from the overlapped video section storage unit 8. The second record information 113 is recorded on the recording medium 7. The second recording / reproducing unit 22 receives the second recording information 113 based on the recording / reproduction control information 106 from the CPU 21.
From the recording medium 7.

[Operation of Recording / Reproducing Apparatus] The operation of the recording / reproducing apparatus of this embodiment will be described below with reference to FIG.
In the following description, operations different from those in the first embodiment will be mainly described. First, a recording operation in the recording / reproducing apparatus of the present embodiment will be described. For example, one frame of digital video information 101 having a time code value (01: 03: 15: 01) is input from the video difference information detection unit 3 to the video information storage unit 20. At the same time, the same video position information 103 having the time code value of one frame before is input from the video difference information storage unit 4 to the video information storage unit 20.
More specifically, the video information storage unit 20 indicates that there is an overlapped frame as the same video position information 103 (01: 02: 15: 00, 01: 03: 15: 0).
0), or indicating that no duplicate frame exists (undefined, 01: 03: 15: 00).

The video information storage unit 20 stores the same video position information 1
03 (01: 02: 15: 00, 01: 03: 15: 00)
0), the video information storage unit 20 stores a frame having a high possibility of being the same as the frame currently input from the video difference information detection unit 3, that is, the time code value (01:
02:15:01) is first output to the video difference information detection unit 3 as stored digital video information 102. Next, the video difference information detecting unit 3 compares the digital video information 101 having the time code value (01: 03: 15: 01) with the time code value (01: 02: 1).
5:01) is compared with the stored digital video information 102 to determine whether the frames are the same frame. Subsequently, when the video difference information detection unit 3 determines that the frames are the same, the video difference information detection unit 3
As in the first embodiment, the same video position information 103 (01: 02: 1) is obtained by combining the two time code values.
5:01, 01: 03: 15: 01) and outputs it to the video difference information storage unit 4.

On the other hand, when the video difference information detecting unit 3 determines that the frames are not the same frame, the video difference information detecting unit 3 stores all the remaining digital video information 10 from the video information storage unit 20.
1 are sequentially input as stored digital video information 102 in frame units. Then, the video difference information detection unit 3
As in the embodiment, it is determined whether or not the same frame exists, and the same video position information 103 is generated. The video information storage unit 20 stores the same video position information 10
3 (undefined, 01: 03: 15: 00), the video information storage unit 20 stores all the stored digital video information 101 as stored digital video information 102 on a frame-by-frame basis. Are output sequentially. After that, the video difference information detection unit 3 determines whether or not the same frame as the digital video information 101 input this time exists, as in the first embodiment, and generates the same video position information 103.

As described above, in the recording / reproducing apparatus of this embodiment, when the video information storage unit 20 receives the same video position information 103 indicating that there is an overlapping frame, the video information storage unit 20 stores the video difference information. One frame having a high possibility of being the same as the frame inputted this time from the information detection unit 3 is first selected, and is output to the video difference information detection unit 3 as the stored digital video information 102. Then, as a result of the comparison processing in the video difference information detection unit 3, when it is determined that the first input stored digital video information 102 is the same frame, the video difference information detection unit 3 stores the digital video information 102 in the video information storage unit 20. Remaining digital video information 101
The same video position information 103 is generated without performing the comparison process with the same. Therefore, the comparison processing operation in the video difference information detection unit 3 can be reduced.

On the other hand, in the CPU 21, the second recording / reproducing unit 2
2 to the video position information 105, for example (01: 03: 1
4:29, undefined, recording complete), and input the time code value of the frame to be recorded next (01: 03: 15: 00)
And outputs it to the video difference information storage unit 3 as the transfer instruction information 104. Thereafter, the CPU 21 determines the same video position information 103 (01:02:15:
00, 01: 03: 15: 00) from the video difference information storage unit 4. Thereafter, the CPU 21 performs the following process (1) or (2) based on the input identical video position information 103.

(1) When the same video position information 103 indicating that an overlapped frame exists is input, the CPU
Reference numeral 21 outputs the storage instruction information 112 for instructing the digital broadcast signal 100 to be stored to the digital broadcast signal storage unit 9. At the same time, the CPU 21 controls the recording / reproduction control information 106 for instructing the recording operation to be interrupted (pause), for example, (0
1: 02: 15: 00, 01: 03: 15: 00, recording pause) is output to the second recording / reproducing unit 22, and the time code value of the next frame (01: 03: 15: 00, undefined, The video recording / reproducing unit 22 outputs the video position information 105 having “not recorded”. As a result, the second recording / reproducing unit 2
2 waits for the next frame of the digital broadcast signal 100 to be input. Further, the CPU 21 outputs the input same video position information 103 to the overlapping video section storage unit 8.
The CPU 21 repeatedly performs the operation shown in (1) until the same video position information 103 indicating that no overlapping frame exists is input. Then, when the CPU 21 inputs the same video position information 103 indicating that there is no overlapping frame, the digital broadcast signal storage 9
To sequentially output the stored digital broadcast signals 100. Further, the pause of the recording operation is released for the second recording / reproducing unit 22, and the recording operation of the second recording information 113 including the digital broadcast signal 100 from the digital broadcast signal storage unit 9 is performed at the present time. Recording / reproduction control information 106 for sequentially restarting up to the time code value included in the position information 105 is output. (2) When the same video position information 103 indicating that there is no overlapping frame is input, the CPU 21 outputs the same video position information 103 to the redundant video section storage unit 8 and outputs the same video position information 103 according to the first embodiment. Similarly, based on the same video position information 103 and the video position information 105 from the second recording / reproducing unit 22, the recording / reproducing control information 106 is generated and output to the second recording / reproducing unit 22.

Next, the overlapping video section storage unit 8 stores the same video position information 1 indicating that no overlapping frame exists.
Until 03 is input from the CPU 21, the same video position information 103 indicating that an overlapping frame exists is stored. Then, when the same video position information 103 indicating that there is no overlapping frame is input, the overlapping video section storage unit 8 collectively stores the stored same video position information 103 as the second video section information 111 and performs second recording. Playback part 2
Output to 2. More specifically, the overlapping video section storage unit 8
Is the same image position information 103 (01: 0)
2:15:00, 01: 03: 15: 00) to (01:
02:45:00, 01: 03: 45: 00) are input continuously for 30 seconds, the overlapping video section storage unit 8 puts the same video position information 103 together, for example, (0
1: 02: 15: 00-01: 02: 45: 00, 0
1: 03: 15: 00-01: 03: 45: 00) to the second recording / reproducing unit 22.

On the other hand, the digital broadcast signal storage section 9 receives the digital broadcast signal 100 from the digital broadcast signal receiving section 1 and stores the storage instruction information 112 in the CPU.
In the case where the digital broadcast signal is input from 21, the digital broadcast signal 100 is accumulated. Also, the digital broadcast signal storage unit 9 stores C
When the storage instruction information 112 for instructing writing is input from the PU 21, the stored digital broadcast signal 100 is sequentially output to the second recording / reproducing unit 22. Subsequently, in the second recording / reproducing unit 22, the recording / reproducing control information 1 from the CPU 21 is read.
Based on 06, the second recording information 113 including the digital broadcast signal 100 from the digital broadcast signal storage unit 9 is recorded on the recording medium 7. Further, when the recording operation of the second recording information 113 is restarted as described above, the second recording / reproducing unit 22 converts the input overlapping video section information 111 into the second recording information 1.
13 and recorded on the recording medium 7. At this time, it is preferable that the second recording / reproducing unit 22 records the overlapping video section information 111 in a file on the recording medium 7 which is read first during the reproducing operation or a file at the head position of the recorded digital broadcast signal 100. With this configuration, the CPU 21 can omit the processing operation of outputting and processing the transfer instruction information 104 in units of frames, similarly to the first embodiment, and reduce the processing load on the CPU 21. Can be reduced. Also, at the time of the reproducing operation, the CPU 21 reads the file of the overlapping video section information 111 so that the overlapping video section can be confirmed in advance, and it is easy to skip and play one of the overlapping videos in the overlapping video section. Can be performed.

Next, the reproducing operation of the recording / reproducing apparatus of this embodiment will be described. The second recording / reproducing unit 22 reproduces the recording medium 7 and obtains the second recording information including the data of the digital broadcast signal 100, the time code value of the reproduced frame, and the time code value of the same frame as the reproduced frame. 113, for example (digital video information, 01: 02: 1
5:01, undefined). Then, the second recording / reproducing unit 22 outputs the data of the digital broadcast signal 100 included in the second recording information 113 to an external display device or the like. At the same time, the second recording / reproducing unit 22 outputs the time code value of the same frame as the frame whose reproduction has been completed at the current time, the time code value of the frame whose reproduction has been completed at this time, and the video position information 105 including mode information, for example, ( Undefined, 01: 02: 15: 01, reproduction completed) is output to the CPU 21. Next, the CPU 21 acquires the time code value of the next frame to be reproduced, for example, (01: 02: 15: 02) from the input video position information 105, and obtains the time code value of the same frame as the next frame to be reproduced. The recording / reproduction control information 106 including a time code value, a time code value of a frame to be reproduced next, and mode information, for example, (undefined, 01: 02: 15: 02, reproduction) is output to the second recording / reproduction unit 22. I do. When the second recording information 113 reproduced by the second recording / reproducing unit 22 includes the overlapping video section information 111, the CPU 21 instructs the fast forward reproduction of one video section of the superimposed video section. It generates control information 106 and outputs it to the second recording / reproducing unit 22. As a result, the second recording / playback unit 22 performs fast-forward playback of one of the overlapping video sections. In the above description, the overlapping video section information 1 recorded on the recording medium 7
11 has been described for use in fast-forward playback,
It can also be used for display on an external display device or skip reproduction.

As described above, the recording / reproducing apparatus of this embodiment
In the recording and reproducing method, the overlapping video section storage unit 8 generates the overlapping video section information 111 based on a plurality of pieces of the same video position information 103. Further, the second recording / reproducing unit 22
Record the overlapping video section information 111 on the recording medium 7. Thereby, in the recording / reproducing apparatus and the recording / reproducing method of the present embodiment, for example, when performing a video editing operation, the overlapping video section information 111 can be used as index information, and the video editing operation can be easily performed. it can.

Third Embodiment [Configuration of Recording / Reproducing Apparatus] FIG. 4 is a block diagram showing the configuration of a recording / reproducing apparatus according to a third embodiment of the present invention. In this embodiment, the configuration of the recording / reproducing apparatus is configured to estimate and detect a CM section based on overlapping video section information. The other parts are the same as those of the second embodiment, and the duplicated description thereof will be omitted. As shown in FIG. 4, in the recording / reproducing apparatus of the present embodiment, the CM section detection unit 10 operates between the overlapping video section storage unit 8 and the third recording / reproducing unit 23 that records the third recording information 115 on the recording medium 7. It is provided in. The CM section detection unit 10 estimates and detects a CM section based on the overlapping video section information 111 from the overlapping video section storage unit 8. Specifically, the CM section detection unit 1
0 calculates a time interval between two overlapping video sections from the overlapping video section information 111. Further, when the calculated time interval is a multiple of a predetermined M seconds (M is a positive number),
The CM section detection unit 10 determines that the video between the two overlapping video sections is a video of the CM section, and adds information indicating the CM section to the overlapped video section information 111 to generate the CM section information 114 as CM section information 114. (3) Output to the recording / reproducing unit 23. The third recording / reproducing unit 23 is, for example, a DVD-RAM recorder or a DV-RAM.
A display device (not shown) configured by a DR drive or a magnetic optical disk device and including a monitor and a speaker
It is connected to the. The third recording / reproducing unit 23 includes a CPU 21
The third recording information 115 including the digital broadcast signal 100 from the digital broadcast signal storage unit 9 is recorded on the recording medium 7 based on the recording / reproduction control information 106 from the CM and the CM section information 114 from the CM section detection unit 10. . The third recording / reproducing unit 23 reproduces the third recording information 115 from the recording medium 7 based on the recording / reproduction control information 106 from the CPU 21. Since the digital broadcast signal storage unit 9 temporarily stores the digital broadcast signal 100 from the digital broadcast signal receiving unit 1, the third recording / reproducing unit 23 stores the input CM section information 11
Digital broadcast signal 1 designated as CM section by 4
The CM section information 114 can be easily recorded at the head position of 00.

[Operation of Recording / Reproducing Apparatus] The operation of the recording / reproducing apparatus of this embodiment will be described below with reference to FIG.
In the following description, operations different from those of the first and second embodiments will be mainly described. First, a recording operation in the recording / reproducing apparatus of the present embodiment will be described. The CM section detection unit 10 stores the overlapped video section information 11 from the overlapped video section storage unit 8.
1, for example, (01: 02: 15: 00-01: 02: 4
5:00, 01: 03: 15: 00-01: 03: 4
5:00), the CM section detection unit 10 calculates the time interval between two overlapping video sections from the overlapping video section information 111. That is, the CM section detection unit 10
Calculates the difference between the time code value (01: 03: 15: 00) and the time code value (01: 02: 45: 00), and sets the time interval between two overlapping video sections to 30 seconds. Ask for it. Then, the CM section detection unit 10 determines whether or not the calculated 30 seconds is a preset time of one spot of the CM portion, that is, a multiple of the above-described M seconds. For example, when 15 seconds is set as M seconds,
Since the calculated 30 seconds is a multiple of the spot, that is, a multiple of 15 seconds, the CM section detection unit 10 determines that the video during the above-described video section is the video of the CM section. afterwards,
For example, the CM section detection unit 10 outputs (01: 02: 15: 0)
0-01: 02: 45: 00, CM section, 01:03:
15: 00-01: 03: 45: 00), and outputs it to the third recording / reproducing unit 23.
If the calculated time interval is not a multiple of the spot, the CM section detection unit 10 adds, for example, (01: 0) without adding information indicating the CM section to the overlapped video section information 111.
5: 15: 00-01: 05: 45: 00, undefined, 0
1: 07: 15: 00-01: 07: 45: 00), and outputs it to the third recording / reproducing unit 23.

The third recording / reproducing section 23 records the third recording information 115 including the digital broadcast signal 100 from the digital broadcast signal storage section 9 on the recording medium 7 based on the recording / reproducing control information 106 from the CPU 21. . When the recording operation of the third recording information 115 is resumed, the third recording / reproducing unit 23 outputs the same CM as in the second embodiment.
The section information 114 is included in the third recording information 115 and recorded on the recording medium 7. At this time, the third recording / reproducing unit 23
It is preferable to record the M section information 114 in a file on the recording medium 7 which is read first during the reproducing operation or a file at the head position of the recorded digital broadcast signal 100. With this configuration, the CPU 21 can omit the processing operation of outputting and processing the transfer instruction information 104 in units of frames, as in the first and second embodiments. Processing load can be reduced. Further, at the time of the reproducing operation, the CPU 21 outputs the CM section information 114.
By reading the file of the
The section can be confirmed in advance, and it is also possible to easily perform playback while skipping one of the overlapping video and the CM portion of the overlapping video section.

Next, the reproducing operation of the recording / reproducing apparatus of this embodiment will be described. The third recording / reproducing unit 23 reproduces the recording medium 7, and stores the third recording information including the data of the digital broadcast signal 100, the time code value of the reproduced frame, and the time code value of the same frame as the reproduced frame. 115, for example (digital video information, 01: 02: 1
5:01, undefined). Then, the third recording / reproducing unit 23 outputs the data of the digital broadcast signal 100 included in the third recording information 115 to an external display device or the like. At the same time, the third recording / reproducing unit 23, the video position information 105 including the time code value of the same frame as the frame whose reproduction has been completed at this time, the time code value of the frame whose reproduction has been completed at this time, and the mode information, for example, Definition, 01: 02: 15: 01, reproduction completed) is output to the CPU 21.

Next, the CPU 21 obtains the time code value of the next frame to be reproduced, for example, (01: 02: 15: 02) from the input video position information 105, and obtains the same time code value as the next frame to be reproduced. The recording / reproduction control information 106, for example, (undefined, 01: 02: 15: 02, reproduction) including the time code value of the current frame, the time code value of the frame to be reproduced next, and the mode information is recorded in the third recording / reproduction unit. 23. When the CM information 111 is included in the third recording information 115 reproduced by the third recording / reproducing unit 23, the CPU 21 instructs the fast forward reproduction of one of the superimposed video sections and the CM section. The recording / reproduction control information 106 is generated and output to the third recording / reproduction unit 23. As a result, the third recording / playback unit 23 performs fast-forward playback of one of the overlapped video sections and the CM section. In the above description, the case where only the time interval of two overlapping video sections (CM sections) is used for the determination of the CM section has been described. However, the CM section detector 1
Within 0, a plurality of CM parts are detected by detecting a scene change in the CM section, and the time interval of each CM part is used together with the judgment to improve the accuracy of the judgment of the CM section. .

As described above, the recording / reproducing apparatus of this embodiment
In the recording / reproducing method, the CM section detection unit 10 detects a CM section based on the overlapping video section information 111 from the overlapping video section storage unit 8 and generates CM section information 114. Further, the third recording / reproducing unit 23 records the CM section information 114 on the recording medium 7. As a result, in the recording / reproducing apparatus and the recording / reproducing method according to the present embodiment, the CM portion can be easily detected. Further, in the recording / reproducing apparatus and the recording / reproducing method of the present embodiment, for example, when performing video editing work, the CM section information 114 can be used as index information, and the video editing work can be easily performed.

In the second and third embodiments, the generated overlapping video section information 111 or CM section information 114 is generated.
Is recorded on the recording medium 7 together with the digital broadcast signal 100 included in the later video section of the two video sections overlapping the digital broadcast signal receiving section 1 and the second recording / reproducing section 22 or the third recording section. The configuration in which the digital broadcast signal storage section 9 is provided between the digital broadcast signal storage section 9 and the reproduction section 23 has been described. However, the second recording and reproducing unit 22 and the third recording and reproducing unit 23
However, as described above, the overlapping video section information 111
It is also possible to record the CM section information 114 in a file at the head position on the recording medium 7 which is read first during the reproduction operation or in a file at the head position of the recorded digital broadcast signal 100. In this case, the digital broadcast signal storage unit 9 can be omitted.

Fourth Embodiment [Configuration of Recording / Reproducing Apparatus] FIG. 5 is a block diagram showing a configuration of a recording / reproducing apparatus according to a fourth embodiment of the present invention. In this embodiment, in the configuration of the recording / reproducing apparatus, based on the CM section information, the CM part and one of the video sections overlapping the image section before and after the CM part are automatically removed and recorded on the recording medium. Configured. The other parts are the same as those of the third embodiment, and the duplicated description thereof will be omitted. As shown in FIG. 5, in the recording / reproducing apparatus of the present embodiment, the CM section information 114 is output from the CM section detection unit 10 to the digital broadcast signal storage unit 25. The digital broadcast signal storage unit 25 stores the digital broadcast signal 100 input from the digital broadcast signal receiving unit 1 based on the storage instruction information 112 from the CPU 21. The digital broadcast signal storage unit 25 stores the input CM section information 114.
And outputs the stored digital broadcast signal 117 to the fourth recording / reproducing unit 24 from the stored digital broadcast signal 100 by removing the CM part and one of the video sections overlapping before and after the CM part. . The fourth recording / reproducing unit 24
For example, it is composed of a DVD-RAM recorder, a DVD-R drive or a magnetic optical disk device, and is connected to a display device (not shown) including a monitor and a speaker. The fourth recording / reproducing unit 24 is based on the recording / reproducing control information 106 from the CPU 21, and
The fourth recording information 118 including the stored digital broadcast signal 117 from the recording medium 5 is recorded on the recording medium 7. Fourth recording / reproducing unit 2
4 reproduces the fourth recording information 118 from the recording medium 7 based on the recording / reproduction control information 106 from the CPU 21.

[Operation of Recording / Reproducing Apparatus] The operation of the recording / reproducing apparatus of this embodiment will be described below with reference to FIG.
In the following description, operations different from those of the above-described first to third embodiments will be mainly described. First, a recording operation in the recording / reproducing apparatus of the present embodiment will be described. The digital broadcast signal storage unit 25 stores the storage instruction information 112 from the CPU 21.
For example, (01: 02: 15: 01, 01: 0
3:15:01, recording pause) to (01: 02: 4
5:00, 01: 03: 45: 00, recording pause), the digital broadcast signal storage unit 25 stores the time code values (01: 02: 15: 01) to (01: 0).
The digital broadcast signal 100 up to 3:45:00) is stored. After that, the digital broadcast signal storage unit 25
(01: 02: 45: 01, 01: 03: 45: 01,
The CPU 21 outputs instruction information for instructing writing of
From the digital broadcast signal storage unit 2
5 includes the CM section information 114 (0
1: 02: 15: 00-01: 02: 45: 00, CM
Section, 01: 03: 15: 00-01: 03: 45: 0
Enter 0).

Subsequently, the digital broadcast signal storage unit 25
Input CM section information 114 (01: 02: 15: 00)
-01: 02: 45: 00, CM section, 01: 03: 1
5: 00-01: 03: 45: 00), based on the time code value (01: 02: 45: 01) of the stored digital broadcast signal 100 determined to be a CM section.
The video of the CM part up to (01: 03: 14: 29) is deleted. Further, the digital broadcast signal storage unit 25 stores the time code values (01: 03: 15: 00) to the CM section of the two overlapping video sections, for example.
The video up to (01: 03: 45: 00) is deleted. Then, the digital broadcast signal storage unit 25 stores the time code values (01: 02: 15: 00) to (01: 02: 45: 0).
The stored digital broadcast signal 117 including the images up to 0) is sequentially output to the fourth recording / reproducing unit 24 in frame units.

Next, the fourth recording / reproducing unit 24
The fourth recording information 118 including the stored digital broadcast signal 117 sequentially input from the digital broadcast signal storage unit 25 is recorded on the recording medium 7 based on the recording / reproduction control information 106 from. As a result, the video of the CM section and the video section overlapping after the CM section are automatically removed and recorded. On the other hand, when the recording / reproducing apparatus of the present embodiment performs a reproducing operation, the recording medium 7 is reproduced and, for example, the time code value (0
1: 03: 15: 00) and fourth record information 118 composed of digital broadcast signal 100 and video position information 105.
And the video position information 105 including the time code value (01: 03: 15: 01) of the frame for which reproduction has been completed.
Is output to the CPU 21.

As described above, the recording / reproducing apparatus of this embodiment
According to the recording / reproducing method, the digital broadcast signal storage unit 25 stores the digital broadcast signal 100 input from the digital broadcast signal
I remember. Further, the digital broadcast signal storage unit 25
Is the CM section information 11 input from the CM section detection unit 10
4 and outputs a stored digital broadcast signal 117 to the fourth recording / reproducing unit 24 from the stored digital broadcast signal 100 by removing a CM part and one of the video sections overlapping before and after the CM part. are doing. As a result, in the recording / reproducing apparatus and the recording / reproducing method according to the present embodiment, it is possible to automatically remove and record a detected CM portion and one video of a video section overlapping before and after the CM portion.

<< Fifth Embodiment >> [Configuration of Recording / Reproducing Apparatus] FIG. 6 is a block diagram showing a configuration of a recording / reproducing apparatus according to a fifth embodiment of the present invention. In this embodiment, in the configuration of the recording / reproducing apparatus, the motion vector information included in the digital video information is detected for each frame, and it is determined whether or not the frames are the same based on the detected motion vector information. The other parts are the same as those of the first embodiment, and the duplicated description thereof will be omitted. As shown in FIG. 6, the recording / reproducing apparatus according to the present embodiment includes a motion vector detecting unit 12, a motion vector difference information detecting unit 14, and a motion vector information storing unit 13 which are sequentially connected to the digital broadcast signal receiving unit 1. ing. The motion vector detection unit 12 inputs the digital video information 101 from the digital broadcast signal reception unit 1 on a frame basis, and outputs motion vector information 120. The motion vector information 120 indicates, for example, the X coordinate (horizontal component) of the movement amount of the same picture portion in the input frame and the immediately preceding frame or reference frame in macroblock units, as shown in the MPEG2 standard. And the Y coordinate (vertical component). The motion vector information storage unit 13 stores the motion vector information 120 input via the motion vector difference information detection unit 14 for a plurality of frames, and stores the stored motion vector information 120 as stored motion vector information 121 in units of frames. The information is sequentially output to the vector difference information detection unit 14.

The motion vector difference information detecting section 14 receives the motion vector information 120 from the motion vector detecting section 12 and sequentially inputs the stored motion vector information 121 from the motion vector information storing section 13 in frame units. The motion vector difference information detection unit 14 includes the motion vector information 120 input this time and the stored motion vector information 121 sequentially input.
Then, it is determined whether or not the motion vector information 120 is the same video (frame) as the stored motion vector information 121. More specifically, the motion vector difference information detection unit 14 calculates the sum of the bit differences between the motion vector information 120 and each of the stored motion vector information 121. The sum of the calculated differences is 0 or a threshold value N ′ (N ′
Is an integer, for example, “1”) or less, the motion vector difference information detection unit 14 determines that the frames of the motion vector information 120 and the stored motion vector information 121 that have been input this time are the same, and The same video position information 103 is generated using the address information and output to the video difference information storage unit 4. On the other hand, all motion vector information 1
If the sum of the calculated differences exceeds the threshold value N ′ in the result of the bit comparison with 21, the motion vector difference information detection unit 14 determines that there is no frame identical to the frame of the motion vector information 120 input this time. Then, the same video position information 103 is generated using the address information of the frame of the motion vector information 120, and is output to the video difference information storage unit 4.

[Operation of Recording / Reproducing Apparatus] The operation of the recording / reproducing apparatus of this embodiment will be described below with reference to FIG.
In the following description, operations different from those in the first embodiment will be mainly described. The reproducing operation of the recording / reproducing apparatus of the present embodiment is the same as that of the first embodiment, and the duplicate description will be omitted. First, the motion vector detection unit 12
Is, for example, a time code value (01: 03: 15: 00)
When the digital video information 101 of a frame having
The motion vector information 120 indicated by (10, 4) is detected for each macroblock, and is output to the motion vector difference information detection unit 14. Next, the motion vector difference information detection unit 14 outputs the input motion vector information 120 to the motion vector information storage unit 13 and holds the input motion vector information 120. After that, the motion vector information storage unit 13 stores, for example, the time code value (01: 03: 1).
5:00) is stored as input motion vector information 120 (10, 4). At the same time, the motion vector information storage unit 13 stores, for example, the time code values (01: 02: 15: 00) to (01: 0)
3:14:29) is sequentially output to the motion vector difference information detection unit 14 as stored motion vector information 121.

Subsequently, the motion vector difference information detecting section 14
Is the stored motion vector information 120 (10, 4)
And the stored motion vector information 121 (10, 4) to (2, 3) sequentially input from the motion vector information storage unit 13. More specifically, for example, the motion vector information 120 (10, 4) of the frame having the time code value (01: 03: 15: 00) and the time code value (0
1: 02: 15: 00), the sum of the differences in the bit comparison with the stored motion vector information 121 (10, 4) of the frame having the value of 0 is zero. Therefore, the motion vector difference information detecting unit 14
Determines that these two frames are the same frame, and determines the same video position information 103 (01: 02: 15: 00, 01: 03: 1) having two time code values.
5:00) and outputs it to the video difference information storage unit 4.
If it is determined that the frames are different, the motion vector difference information detecting unit 14 determines the same frame including only the time code value of the frame having the motion vector information 120 input this time, as in the first embodiment. Image position information 1
03, for example, (undefined, 01: 03: 15: 01) and outputs it to the video difference information storage unit 4.

As described above, the recording / reproducing apparatus of this embodiment
In the recording / reproducing method, the motion vector information 12
0 is detected. Further, using the motion vector information 120 detected by the motion vector difference information detection unit 14,
A difference calculation process (comparison process) for determining whether the same duplicated frame exists in a plurality of previously received and stored frames is performed. This allows
In the recording / reproducing apparatus and the recording / reproducing method of the present embodiment, the first
Compared with the embodiment, the comparison processing described above can be simplified, and the processing speed can be easily improved.

The motion vector information storage unit 13 receives the same video position information 103 from the video difference information storage unit 4 as in the video information storage unit 20 shown in FIG. The motion vector information 120 of one frame may be selected based on the position information 103 and output as the stored motion vector information 121. Thus, the motion vector information storage unit 13 selects one of the stored motion vector information 120 for a plurality of frames, which is likely to be the same frame, from the stored motion vector information 121. Can be output to the motion vector difference information detection unit 14, and the comparison processing operation in the motion vector difference information detection unit 14 can be reduced.

<< Sixth Embodiment >> FIG. 7 is a block diagram showing the configuration of a recording / reproducing apparatus according to a sixth embodiment of the present invention. In this embodiment, an A / D converter for receiving an analog television broadcast signal and converting it into a digital broadcast signal is provided in the configuration of the recording / reproducing apparatus. The other parts are the same as those of the first embodiment, and the duplicated description thereof will be omitted. As shown in FIG. 7, in the recording / reproducing apparatus of the present embodiment, the A / D converter 16 is connected to the digital broadcast signal receiver 1. This A / D converter 16
Is a tuner for receiving an analog television broadcast signal 130, and an A / A connected to the tuner for converting the received television broadcast signal 130 into a digital signal.
A / D based on D converter and MPEG2 standard
An MPEG encoder for compressing and encoding the digital signal from the converter and outputting the digital signal as a digital broadcast signal 100 is provided. More specifically, the A / D conversion unit 16 performs A / D conversion.
After the D converter converts a known analog television broadcast signal 130 such as NTSC or PAL received by the tuner into a digital signal, the MPEG encoder converts the digital signal into a video stream such as a video stream defined in the MPEG2 standard. A bit stream is generated and output to the digital broadcast signal receiving unit 1 as a digital broadcast signal 100. Also, the known analog television broadcast signal 130 does not include frame unit information equivalent to the address information (time information) such as the time code value shown in the first embodiment, When the encoder generates a bitstream, its frame-by-frame information is also generated and appended to each frame. Therefore, in the recording / reproducing apparatus and the recording / reproducing method of the present embodiment, the same operation and effect as those of the first embodiment can be obtained. In the above description, the first type shown in FIG.
Although the example in which the A / D converter 16 is connected to the recording / reproducing apparatus of this embodiment has been described, the configuration in which the A / D converter 16 is connected to the recording / reproducing apparatus of another embodiment shown in FIGS. May be.

The recording / reproducing processes of the recording / reproducing apparatuses in the above-described first to sixth embodiments can all be computer-programmed. It is also possible to provide a method. The recording medium referred to here is a floppy disk, CD-ROM, DVD, magneto-optical disk, removable hard disk, or the like. Further, in the first to fifth embodiments, the configuration has been described in which digital broadcast signals of terrestrial digital broadcasting and digital satellite broadcasting are received and recorded and reproduced. A configuration in which a digital broadcast signal of digital broadcast is received and recorded / reproduced may be used.
Further, the case has been described where the digital broadcast signal is composed of data compressed and encoded based on the MPEG2 standard. However, the present invention is not limited to this. It may be data compressed and encoded by an encoding technique.

[0091]

According to the recording / reproducing apparatus and the recording / reproducing method of the present invention, the video difference information detecting section receives the digital video information from the digital broadcast signal receiving section and the digital video information before the digital video information, and the video information storing section. Is compared with the (stored) digital video information stored in the. The video difference information detection unit detects and determines whether or not the same overlapping frame exists based on the comparison result. Further, the video difference information detection unit generates the same video position information based on the comparison result and stores the same in the video difference information storage unit.
The recording / reproducing unit records the same video position information from the video difference information storage unit together with the digital broadcast signal from the digital broadcast signal receiving unit on a recording medium. This allows
According to the recording / reproducing apparatus and the recording / reproducing method of the present invention, for example, when performing a video editing operation, the same video position information can be used as index information, and the video editing operation can be easily performed.

In the recording / reproducing apparatus and the recording / reproducing method according to another aspect of the present invention, the overlapping video section storage unit generates overlapping video section information indicating the overlapping video section based on a plurality of pieces of the same video position information. The duplicate video section information is recorded on the recording medium together with the digital broadcast signal received by the two recording / reproducing units. As a result, the recording / reproducing apparatus and the recording / reproducing method of the present invention can easily detect an overlapped video section and can easily perform a video editing operation on a recorded television broadcast signal (program). In a recording / reproducing apparatus and a recording / reproducing method according to another aspect of the present invention, a CM section detecting section generates CM section information based on overlapping video section information, and the third recording / reproducing section receives a CM signal together with a received digital broadcast signal. Section information is recorded on a recording medium. Thereby, in the recording and reproducing apparatus and the recording and reproducing method of the present invention,
A CM section can be reliably detected, and video editing work of a recorded television broadcast signal (program) can be easily performed.

In the recording / reproducing apparatus and the recording / reproducing method according to another aspect of the present invention, the third recording / reproducing unit stores the CM section information in a file on the recording medium for recording the digital broadcast signal or a file of the recorded digital broadcast signal. Is recorded. As a result, in the recording / reproducing apparatus and the recording / reproducing method of the present invention, the CM portion of the recorded television broadcast signal can be easily and reliably detected, and the video editing of the recorded television broadcast signal (program) can be performed. Work can be done easily. In a recording / reproducing apparatus and a recording / reproducing method according to another aspect of the present invention, a digital broadcast signal storage unit for temporarily storing a digital broadcast signal from a digital broadcast signal receiving unit includes a digital broadcast signal receiving unit and a third recording / reproducing device. Between the unit. Further, in the recording / reproducing apparatus and the recording / reproducing method according to the present invention, the CM section information is recorded at the head position of a digital broadcast signal designated as a CM section by the CM section information input by the third recording / reproducing section. Thus, in the recording / reproducing apparatus and the recording / reproducing method of the present invention, the CM
The portion can be reliably detected, and the video editing work of the recorded television broadcast signal (program) can be easily performed.

In the recording / reproducing apparatus and the recording / reproducing method according to another aspect of the present invention, the digital broadcast signal storage section temporarily stores the digital broadcast signal from the digital broadcast signal receiving section. Further, the digital broadcast signal storage section stores a CM portion of the accumulated digital broadcast signal and the CM based on the CM section information from the CM section detection section.
It outputs a stored digital broadcast signal excluding one digital broadcast signal of a video section overlapping before and after the portion.
A fourth recording / reproducing unit records the stored digital broadcast signal from the digital broadcast signal storage unit on a recording medium. Thereby, in the recording and reproducing apparatus and the recording and reproducing method of the present invention,
CM part of recorded television broadcast signal can be easily
In addition, the digital broadcast signal can be reliably detected, and the digital broadcast signal of one of the video sections overlapping before and after the detected CM part can be automatically removed and recorded on the recording medium.

In the recording / reproducing apparatus and recording / reproducing method according to another aspect of the present invention, the motion vector difference information detecting section receives the moving vector information from the motion vector detecting section and the motion vector information before the motion vector information. A comparison is made with the (stored) motion vector information stored in the vector information storage unit. The motion vector difference information detection unit detects and determines whether or not the same overlapping frame exists based on the above comparison result. Further, the motion vector difference information detection unit generates the same video position information based on the comparison result, and stores the same in the video difference information storage unit. Also,
The recording / reproducing unit records the same video position information from the video difference information storage unit on a recording medium together with the digital broadcast signal from the digital broadcast signal receiving unit. Thus, in the recording / reproducing apparatus and the recording / reproducing method of the present invention, for example, when performing a video editing operation, the same video position information can be used as index information, and the video editing operation can be easily performed. Further, the process of detecting the same overlapping video signal in the received television broadcast signal can be simplified, and the processing speed can be improved.

In the recording / reproducing apparatus and the recording / reproducing method according to another aspect of the present invention, the video information storage unit receives the same video position information from the video difference information storage unit and stores the same video position information for a plurality of stored frames. , One frame is selected based on the input same video position information and is output as stored digital video information. As a result, in the recording / reproducing apparatus and the recording / reproducing method according to the present invention, the processing for generating the same video position information can be reduced. In the recording / reproducing device and the recording / reproducing method of the invention according to another aspect, the motion vector information storage unit inputs the same video position information from the video difference information storage unit,
Among the stored motion vector information for a plurality of frames, the motion vector information of one frame is selected based on the input same video position information and output as the stored motion vector information. As a result, in the recording / reproducing apparatus and the recording / reproducing method according to the present invention, the processing for generating the same video position information can be reduced.

The recording / reproducing apparatus and recording / reproducing method according to another aspect of the present invention include an A / D converter for converting an analog television broadcast signal into the digital broadcast signal. As a result, in the recording / reproducing apparatus and the recording / reproducing method of the present invention, the same overlapping video signal included in the analog television broadcast signal can be detected in frame units. Further, since the recording / reproducing method of the present invention can be made into a computer program, the recording / reproducing method shown in each of the above-described first to sixth embodiments is recorded on a computer-executable recording medium and executed. It is also possible.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a recording / reproducing apparatus according to a first embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a specific example of information used in the recording / reproducing apparatus shown in FIG.

FIG. 3 is a block diagram showing a configuration of a recording / reproducing apparatus according to a second embodiment of the present invention.

FIG. 4 is a block diagram showing a configuration of a recording / reproducing apparatus according to a third embodiment of the present invention.

FIG. 5 is a block diagram showing a configuration of a recording / reproducing apparatus according to a fourth embodiment of the present invention.

FIG. 6 is a block diagram showing a configuration of a recording / reproducing apparatus according to a fifth embodiment of the present invention.

FIG. 7 is a block diagram showing a configuration of a recording / reproducing apparatus according to a sixth embodiment of the present invention.

FIG. 8 is a block diagram showing a configuration of a conventional recording / reproducing apparatus.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 digital broadcast signal receiving section 2, 20 video information storage section 3 video difference information detection section 4 video difference information storage section 6 recording / reproducing section 7 recording medium 8 overlapping video section storage section 9, 25 digital broadcast signal storage section 10 CM section detection Unit 12 motion vector detection unit 13 motion vector information storage unit 14 motion vector difference information detection unit 16 A / D conversion unit 22 second recording and reproducing unit 23 third recording and reproducing unit 24 fourth recording and reproducing unit

 ──────────────────────────────────────────────────の Continuing from the front page (72) Kunihiko Sakoda, Inventor 1006 Kazuma Kadoma, Osaka Pref.Matsushita Electric Industrial Co., Ltd. F-term (reference) 5C053 FA14 FA20 FA23 FA24 FA25 FA27 GA11 GB06 GB19 GB21 GB37 GB38 GB40 HA21 HA24 HA40 JA12 JA21 JA22 JA24 JA30 KA05 KA22 KA24 KA25 LA06 LA07 LA20 5C059 KK36 LA01 LB07 MA00 NN01 NN23 NN27 SS04 SS14 SS14 UA02 UA05

Claims (36)

[Claims] A digital broadcast signal receiving unit that receives a digital broadcast signal and outputs the digital broadcast signal and digital video information included in the digital broadcast signal; and a plurality of frames from the digital broadcast signal receiving unit. A video information storage unit that stores digital video information for each minute and outputs the stored digital video information in units of frames, a digital video information input from the digital broadcast signal receiving unit, and a stored digital video input from the video information storage unit A video difference information detection unit that compares information in frame units and generates the same video position information based on the comparison result; and a video difference information storage unit that stores the same video position information from the video difference information detection unit. And the same video from the video difference information storage unit together with the digital broadcast signal from the digital broadcast signal receiving unit Recording reproducing apparatus comprising the recording unit, which records the location information in the recording medium. 2. A digital broadcast signal receiving unit that receives a digital broadcast signal and outputs the digital broadcast signal and digital video information included in the digital broadcast signal; and a plurality of frames from the digital broadcast signal receiving unit. A video information storage unit that stores digital video information for each minute and outputs the stored digital video information in frame units; a digital video information input from the digital broadcast signal receiving unit and a stored digital video input from the video information storage unit A video difference information detection unit that compares information on a frame basis and generates the same video position information based on the comparison result; and a video difference information storage unit that stores the same video position information from the video difference information detection unit. And storing a plurality of identical video position information from the video difference information storage unit and storing the plurality of identical video position information. An overlapping video section storage unit that outputs overlapping video section information indicating an overlapping video section based on the information; and recording the overlapping video section information from the overlapping video section storage unit together with the digital broadcast signal from the digital broadcast signal receiving unit. A second recording / reproducing unit for recording on a medium; 3. A digital broadcast signal receiving unit that receives a digital broadcast signal and outputs the digital broadcast signal and digital video information included in the digital broadcast signal, and a plurality of frames from the digital broadcast signal receiving unit. A video information storage unit that stores digital video information for each minute and outputs the stored digital video information in frame units; a digital video information input from the digital broadcast signal receiving unit and a stored digital video input from the video information storage unit A video difference information detection unit that compares information on a frame basis and generates the same video position information based on the comparison result; and a video difference information storage unit that stores the same video position information from the video difference information detection unit. And storing a plurality of identical video position information from the video difference information storage unit and storing the plurality of identical video position information. An overlapping video section storage unit that outputs overlapping video section information indicating an overlapping video section based on the information; And a third recording / reproducing unit for recording the CM section information from the CM section detection unit on a recording medium together with the digital broadcast signal from the digital broadcast signal receiving unit. A recording / reproducing apparatus characterized by the above-mentioned. 4. The apparatus according to claim 3, wherein the third recording / reproducing unit is configured to record the CM section information in a file on a recording medium for recording the digital broadcast signal or a file at a head position of the recorded digital broadcast signal. Claim 3
The recording / reproducing apparatus according to claim 1. 5. A digital broadcast signal storage section for temporarily storing a digital broadcast signal from the digital broadcast signal receiving section is provided between the digital broadcast signal receiving section and the third recording / reproducing section. (3) The recording / reproducing unit determines that the C
4. The recording / reproducing apparatus according to claim 3, wherein the CM section information is recorded at a head position of a digital broadcast signal designated as an M section. 6. A digital broadcast signal receiving unit that receives a digital broadcast signal and outputs the digital broadcast signal and digital video information included in the digital broadcast signal; and a plurality of frames from the digital broadcast signal receiving unit. A video information storage unit that stores digital video information for each minute and outputs the stored digital video information in frame units; a digital video information input from the digital broadcast signal receiving unit and a stored digital video input from the video information storage unit A video difference information detection unit that compares information on a frame basis and generates the same video position information based on the comparison result; and a video difference information storage unit that stores the same video position information from the video difference information detection unit. And storing a plurality of identical video position information from the video difference information storage unit and storing the plurality of identical video position information. An overlapping video section storage unit that outputs overlapping video section information indicating an overlapping video section based on the information; A CM section detector that outputs the CM section information shown in the table, and a digital broadcast signal from the digital broadcast signal receiving section is temporarily stored and stored based on the CM section information from the CM section detector. A digital broadcast signal storage unit for outputting a stored digital broadcast signal excluding one digital broadcast signal of a CM section and a video section overlapping before and after the CM section of the digital broadcast signal; A fourth recording / reproducing unit that records the stored digital broadcast signal on a recording medium. 7. A digital broadcast signal receiving unit for receiving a digital broadcast signal and outputting the digital broadcast signal and digital video information included in the digital broadcast signal; and receiving digital video information from the digital broadcast signal receiving unit. A motion vector detection unit that inputs in units of frames, extracts and outputs motion vector information included in the digital video information, and stores motion vector information for a plurality of frames from the motion vector detection unit, A motion vector information storage unit that outputs the stored motion vector information on a frame basis; a motion vector information input from the motion vector detection unit and a storage motion vector information input from the motion vector information storage unit; Motion vector difference information detection unit that generates the same video position information in frame units based on A video difference information storage unit that stores the same video position information from the motion vector difference information detection unit, and the same video position information from the video difference information storage unit together with the digital broadcast signal from the digital broadcast signal reception unit. A recording / reproducing apparatus, comprising: a recording / reproducing unit for recording on a recording medium. 8. The video information storage unit receives the same video position information from the video difference information storage unit and stores the same video position information among the stored plurality of frames of digital video information. 7. The recording / reproducing apparatus according to claim 1, wherein one frame is selected and output as stored digital video information. 9. The motion vector information storage unit receives the same video position information from the video difference information storage unit, and inputs the same video position information among the stored motion vector information for a plurality of frames. 8. The recording / reproducing apparatus according to claim 7, wherein the motion vector information of one frame is selected and output as stored motion vector information based on the information. 10. The recording / reproducing apparatus according to claim 1, further comprising an A / D converter for converting an analog television broadcast signal into the digital broadcast signal. 11. The digital broadcast signal according to claim 1, wherein the digital broadcast signal is encoded by a digital compression technique.
11. The recording / reproducing apparatus according to any one of items 1 to 10. 12. The recording / reproducing apparatus according to claim 1, wherein said digital broadcast signal is encoded by an MPEG system. 13. A digital broadcast signal receiving step of receiving a digital broadcast signal and outputting the digital broadcast signal and digital video information included in the digital broadcast signal from a digital broadcast signal receiving unit. Digital video information storage step of storing digital video information in a video information storage unit; inputting the digital video information stored in the video information storage unit in the digital video information storage step as stored digital video information; The same image position information generating step of comparing the image information and the digital image information input this time from the digital broadcast signal receiving unit on a frame basis, and generating the same image position information based on the comparison result; Store the same video position information generated in step 2 in the video difference information storage unit Recording the same video position information from the video difference information storage unit together with a digital broadcast signal from the digital broadcast signal receiving unit on a recording medium. Playback method. 14. A digital broadcast signal receiving step of receiving a digital broadcast signal and outputting the digital broadcast signal and digital video information included in the digital broadcast signal from a digital broadcast signal receiving unit. A digital video information storage step of storing digital video information in a video information storage unit; the digital video information stored in the video information storage unit in the digital video information storage step is input as stored digital video information; The same image position information generating step of comparing the image information and the digital image information inputted this time from the digital broadcast signal receiving unit on a frame basis, and generating the same image position information based on the comparison result; Store the same video position information generated in step 2 in the video difference information storage unit The same video position information storing step, based on the plurality of the same video position information, the overlapping video section information outputting step of outputting the overlapping video section information indicating the overlapping video section, and the digital broadcast signal from the digital broadcast signal receiving unit. And a recording step of recording the overlapping video section information on a recording medium. 15. A digital broadcast signal receiving step of receiving a digital broadcast signal and outputting the digital broadcast signal and digital video information included in the digital broadcast signal from a digital broadcast signal receiving unit. A digital video information storage step of storing digital video information in a video information storage unit; the digital video information stored in the video information storage unit in the digital video information storage step is input as stored digital video information; The same image position information generating step of comparing the image information and the digital image information inputted this time from the digital broadcast signal receiving unit on a frame basis, and generating the same image position information based on the comparison result; Store the same video position information generated in step 2 in the video difference information storage unit The same video position information storing step, based on the plurality of the same video position information, the overlapping video section information output step of outputting the overlapping video section information indicating the overlapping video section, A CM section information output step of detecting and outputting CM section information indicating the CM section; and a recording step of recording the CM section information on a recording medium together with a digital broadcast signal from the digital broadcast signal receiving unit. Characteristic recording and reproduction method. 16. In the recording step, a file on a recording medium for recording the digital broadcast signal or a file at a head position of the recorded digital broadcast signal is stored in the recording medium.
The recording / reproducing method according to claim 15, wherein M section information is recorded. 17. A digital broadcast signal accumulating step for temporarily accumulating a digital broadcast signal from the digital broadcast signal receiving unit in a digital broadcast signal storage unit before the recording step. C according to CM section information
2. The CM section information is recorded at a head position of a digital broadcast signal designated as an M section.
6. The recording / reproducing method according to 5. 18. A digital broadcast signal receiving step of receiving a digital broadcast signal and outputting the digital broadcast signal and digital video information included in the digital broadcast signal from a digital broadcast signal receiving unit; A digital video information storage step of storing digital video information in a video information storage unit; the digital video information stored in the video information storage unit in the digital video information storage step is input as stored digital video information; The same image position information generating step of comparing the image information and the digital image information inputted this time from the digital broadcast signal receiving unit on a frame basis, and generating the same image position information based on the comparison result; Store the same video position information generated in step 2 in the video difference information storage unit The same video position information storing step, based on the plurality of the same video position information, the overlapping video section information output step of outputting the overlapping video section information indicating the overlapping video section, A CM section information output step of detecting and outputting CM section information indicating the CM section; temporarily storing a digital broadcast signal from the digital broadcast signal receiving unit; and storing the digital broadcast signal based on the CM section information. Outputting a stored digital broadcast signal excluding a CM portion of a digital broadcast signal and one digital broadcast signal of a video section overlapping before and after the CM portion, and the stored digital broadcast signal A recording / reproducing method characterized by comprising a recording step of recording the information on a recording medium. 19. A digital broadcast signal receiving step of receiving a digital broadcast signal and outputting the digital broadcast signal and digital video information included in the digital broadcast signal from a digital broadcast signal receiving unit; A motion vector output step of inputting digital video information in units of frames and outputting motion vector information included in the digital video information from a motion vector detection unit; storing the motion vector information for a plurality of frames in motion vector information Storing the motion vector information stored in the motion vector information section in the motion vector information storing step as the stored motion vector information, and inputting the motion vector information and the motion vector detecting section. From the input motion vector information The same video position information generating step of generating the same video position information based on the comparison result, and storing the same video position information generated in the same video position information generation step in the video difference information storage unit A recording / reproducing method, comprising: a video position information storing step; and a recording step of recording the same video position information from the video difference information storage section together with a digital broadcast signal from the digital broadcast signal receiving section on a recording medium. . 20. The video information storage unit receives the same video position information from the video difference information storage unit and stores the same video position information among the stored plurality of frames of digital video information. 19. The recording / reproducing method according to claim 13, wherein one frame is selected and output as stored digital video information. 21. The motion vector information storage unit inputs the same video position information from the video difference information storage unit,
20. The motion vector information of one frame is selected from the stored motion vector information for a plurality of frames based on the input same video position information and output as the stored motion vector information. The recording / reproducing apparatus as described in the above. 22. An A / D conversion step for converting an analog television broadcast signal into the digital broadcast signal before the digital broadcast signal receiving step. A recording / reproducing method according to any of the above. 23. The digital broadcast signal according to claim 1, wherein the digital broadcast signal is encoded by a digital compression technique.
23. The recording / reproducing method according to any one of 3 to 22. 24. The recording / reproducing method according to claim 13, wherein said digital broadcast signal is encoded by an MPEG system. 25. A digital broadcast signal receiving step of receiving a digital broadcast signal and outputting the digital broadcast signal and digital video information included in the digital broadcast signal from a digital broadcast signal receiving unit. Digital video information storage step of storing digital video information in a video information storage unit; inputting the digital video information stored in the video information storage unit in the digital video information storage step as stored digital video information; The same image position information generating step of comparing the image information and the digital image information input this time from the digital broadcast signal receiving unit on a frame basis, and generating the same image position information based on the comparison result; Store the same video position information generated in step 2 in the video difference information storage unit Recording the same video position information from the video difference information storage unit together with a digital broadcast signal from the digital broadcast signal receiving unit on a recording medium. Playback method. 26. A digital broadcast signal receiving step of receiving a digital broadcast signal and outputting the digital broadcast signal and digital video information included in the digital broadcast signal from a digital broadcast signal receiving unit; Digital video information storage step of storing digital video information in a video information storage unit; inputting the digital video information stored in the video information storage unit in the digital video information storage step as stored digital video information; The same image position information generating step of comparing the image information and the digital image information input this time from the digital broadcast signal receiving unit on a frame basis, and generating the same image position information based on the comparison result; Store the same video position information generated in step 2 in the video difference information storage unit The same video position information storing step, based on the plurality of the same video position information, the overlapping video section information outputting step of outputting the overlapping video section information indicating the overlapping video section, and the digital broadcast signal from the digital broadcast signal receiving unit. And a recording medium having recorded thereon a recording / reproducing program having a recording step of recording the overlapping video section information on the recording medium. 27. A digital broadcast signal receiving step of receiving a digital broadcast signal and outputting the digital broadcast signal and digital video information included in the digital broadcast signal from a digital broadcast signal receiving unit. Digital video information storage step of storing digital video information in a video information storage unit; inputting the digital video information stored in the video information storage unit in the digital video information storage step as stored digital video information; The same image position information generating step of comparing the image information and the digital image information input this time from the digital broadcast signal receiving unit on a frame basis, and generating the same image position information based on the comparison result; Store the same video position information generated in step 2 in the video difference information storage unit The same video position information storing step, based on the plurality of the same video position information, the overlapping video section information outputting step of outputting the overlapping video section information indicating the overlapping video section, A recording / reproducing apparatus comprising: a CM section information output step of detecting and outputting CM section information indicating the CM section; and a recording step of recording the CM section information on a recording medium together with a digital broadcast signal from the digital broadcast signal receiving unit. A recording medium on which a program is recorded. 28. In the recording step, a file on a recording medium for recording the digital broadcast signal or a file at a head position of the recorded digital broadcast signal is added to the
The recording medium according to claim 27, wherein M section information is recorded. 29. A digital broadcast signal storing step of temporarily storing a digital broadcast signal from the digital broadcast signal receiving section in a digital broadcast signal storage section before the recording step, C according to CM section information
3. The CM section information is recorded at a head position of a digital broadcast signal designated as an M section.
8. The recording medium according to 7. 30. A digital broadcast signal receiving step of receiving a digital broadcast signal and outputting the digital broadcast signal and digital video information included in the digital broadcast signal from a digital broadcast signal receiving unit. Digital video information storage step of storing digital video information in a video information storage unit; inputting the digital video information stored in the video information storage unit in the digital video information storage step as stored digital video information; The same image position information generating step of comparing the image information and the digital image information input this time from the digital broadcast signal receiving unit on a frame basis, and generating the same image position information based on the comparison result; Store the same video position information generated in step 2 in the video difference information storage unit The same video position information storing step, based on the plurality of the same video position information, the overlapping video section information output step of outputting the overlapping video section information indicating the overlapping video section, A CM section information output step of detecting and outputting CM section information indicating the CM section; temporarily storing a digital broadcast signal from the digital broadcast signal receiving unit; and storing the digital broadcast signal based on the CM section information. Outputting a stored digital broadcast signal excluding a CM portion of a digital broadcast signal and one digital broadcast signal of a video section overlapping before and after the CM portion, and the stored digital broadcast signal Recording medium for recording a recording / reproducing program comprising a recording step of recording the program on a recording medium. 31. A digital broadcast signal receiving step of receiving a digital broadcast signal and outputting the digital broadcast signal and digital video information included in the digital broadcast signal from a digital broadcast signal receiving unit; A motion vector output step of inputting digital video information in units of frames and outputting motion vector information included in the digital video information from a motion vector detecting unit; storing the motion vector information for a plurality of frames in motion vector information Storing the motion vector information stored in the motion vector information section in the motion vector information storing step as the stored motion vector information, and inputting the motion vector information and the motion vector detecting section. From the input motion vector information The same image position information generating step of generating the same image position information based on the comparison result, and storing the same image position information generated in the same image position information generating step in the image difference information storage unit. A recording medium recording a recording / reproducing program, comprising: a video position information storage step; and a recording step of recording the same video position information from the video difference information storage section together with a digital broadcast signal from the digital broadcast signal receiving section on a recording medium. . 32. The video information storage unit receives the same video position information from the video difference information storage unit and stores the same video position information among the stored digital video information for a plurality of frames. 31. The recording medium according to claim 25, wherein one frame is selected based on the selected information and output as stored digital video information. 33. The motion vector information storage unit receives the same video position information from the video difference information storage unit,
32. The motion vector information for one frame is selected from the stored motion vector information for a plurality of frames based on the input same video position information and output as stored motion vector information. Recording medium according to the above. 34. An apparatus according to claim 25, further comprising an A / D conversion step of converting an analog television broadcast signal into said digital broadcast signal before said digital broadcast signal receiving step. The recording medium according to any one of the above. 35. The digital broadcast signal according to claim 2, wherein the digital broadcast signal is encoded by a digital compression technique.
35. The recording / reproducing method according to any one of items 5 to 34. 36. The recording medium according to claim 25, wherein said digital broadcast signal is encoded by an MPEG system.