JP4861221B2 - RECORDING DEVICE, RECORDING METHOD, VIDEO RECORDING / REPRODUCING DEVICE, AND RECORDING FILE PROCESSING METHOD THEREOF - Google Patents

Description

  The technical field relates to a video playback device that plays back recorded video and a method for processing a recorded video file.

  In recent years, in the field of television broadcasting, there has been an attempt to shift from conventional analog broadcasting to digital broadcasting.

  Patent Document 1 discloses an “information recording apparatus and the like that can record broadcast information so that broadcast information to be reproduced can be accurately identified and reproduced while improving the convenience of reproducing broadcast information. As a means for solving this problem, “when reproducing in allocation unit ALU units according to the reception time of the first packet and the reception time of the last packet of the allocation unit ALU including a plurality of packets included in the broadcast information. Is also managed in units of access units including the I picture based on the display time information of the I picture included in the packet or the reception time information thereof ”. .

JP 2003-257157 A

  In digital broadcasting, an image compression technique for compressing and transmitting image data can be used, and MPEG technology is widely used as a de facto standard for digital broadcast image compression techniques.

  In digital television broadcasting employing MPEG technology, time-division multiplexing is performed using a relatively short transmission unit (transport packet), and transmitted as MPEG2-TS (transport stream) from a broadcasting station to a receiver.

  In the MPEG2 standard, video and audio data (AV data) is encoded (encoded), and the encoded data is transmitted as MPEG2-TS composed of a plurality of transport packets.

  The MPEG2-TS received by the receiver is decoded (decoded) by the decoder and output as AV data to the display screen / audio output device.

  The received MPEG2-TS is temporarily stored in a storage medium using a disk such as an HDD (hard disk drive), an optical disk, a magneto-optical disk, or a magnetic disk, or in a card-shaped storage medium using a semiconductor. It can be recorded on a recording device / media such as a (semiconductor memory), and can be played back and viewed at the viewer's request by the operation of the viewer. At this time, the user can perform special playback such as fast-forward playback, rewind playback, and jump playback during playback.

Here, an example of a data structure when storing in a recording medium of AV stream contents such as video data and audio data will be described with reference to FIGS.
FIG. 7 is a schematic diagram illustrating an example of a TTS (Time Stamped Transport Stream packet) packet.
FIG. 8 is a schematic diagram illustrating an example of a relationship between a TTS packet and an AU (Allocation Unit) in an AV stream stored in a recording medium.
FIG. 9 is a schematic diagram showing an example of the relationship between AU and I pictures of an AV stream stored in a recording medium and information (SI) associated therewith.

  As shown in FIG. 7, a transport packet (TS packet) having a length of 188 bytes in the MPEG standard has time information of 4 bytes at the head (for example, time when the receiver receives the transport packet) , ATS: described as Arrival Time Stamp), and is recorded on a recording medium such as an HDD as a TTS (Time Stamped Transport Stream packet) packet having a length of 192 bytes. The time information ATS holds time stamp information when the transport packet arrives. The MPEG standard TS packet is composed of a header of the first 4 bytes, followed by a payload of 184 bytes (or an adaptation field). A packet ID (PID) is stored in the header, and each packet is identified. In addition, as an MPEG standard, it has a program map table (PMT) that associates PIDs with programs, and can be used to distinguish between video and audio or when a program provider identifies a stream.

  As shown in FIG. 8, for example, 8192 TTS packets are collected to form an AU (Allocation Unit). The size of each AU will be about 1.5 Mbytes.

  The TTS packet in the AU includes a TTS packet including the I picture in the payload of the transport packet.

  SI (Stream Information) is information for managing the search / access unit at the time of reproduction of the AV stream recorded on the recording medium in the AU unit, and is recorded as a file separate from the AU, such as an I picture and a GOP. Information about the position is recorded in the SI. Here, the I picture is a frame (picture) which is independent in GOP (Group of Pictures) and is encoded without referring to data of other frames (pictures). Thus, special playback such as fast-forwarding can be performed smoothly.

  On the other hand, a file for recording AU management information is AUI (Allocation Unit Information). In the AUI, the time when the first TTS packet of the AU arrives (for example, the time when the receiver receives the transport packet) is recorded as TS (Timestamp) information. AU, AUI, and SI are all configured as separate files.

  Here, there is a movement to determine a digital recording standard corresponding to removable media. However, at present, in such a standard, the SI information is not essential but is treated as an option. This may cause a problem that special reproduction cannot be smoothly performed especially when exchanging digital broadcast recording data encoded in MPEG using a removable medium between different manufacturers.

  The ATS, which is a time stamp added to the head of the above TTS packet, is attached on the device side. However, due to a network traffic problem, the device data is shifted or the content data input via the network is a problem. In some cases, the data is not correctly added due to the fact that data processing cannot be performed properly. In such a case, there is a problem in compatibility of the recorded data.

  According to an embodiment of the present invention, when the content does not include control information for the content, the control information for the content is generated. Specifically, in the recording file processing method of the video recording / reproducing apparatus, when a recorded file is reproduced, or when a recorded file stored in a removable medium is first accessed, control for display such as SI is performed. If the recorded file does not have control information for display such as SI, the control information for display such as SI is created from the recorded file, and the recording is performed. Store with file.

  Also, it is checked whether or not the time stamp information given on the device side of the TTS packet is correct, and if there is an error, it is corrected with a time stamp based on the standard on the broadcasting station side.

  According to the above means, it is possible to provide a playback apparatus that smoothly plays back recorded video.

  Embodiments according to the present invention will be described below with reference to FIGS.

Embodiment 1
Hereinafter, a first embodiment according to the present invention will be described with reference to FIGS. 1 to 3.

First, the configuration of the video recording / reproducing apparatus according to the first embodiment will be described with reference to FIG.
FIG. 1 is a block diagram showing an example of the configuration of the video recording / playback apparatus according to the first embodiment.

  The video recording / playback apparatus according to the present embodiment is a video recording / playback apparatus that receives a digital broadcast and performs recording and playback. As an example of the image compression technique, a case will be described in which a signal encoded and multiplexed by the MPEG (Moving Picture Experts Group) method is handled.

  In this configuration example, each is described as a hardware element, but a part may be realized by software. Further, the present invention may be applied to transmitting video content, audio content, and the like to a specific user such as VOD (Video On Demand). These are collectively called distribution.

  The video recording / reproducing apparatus of the present embodiment shown in FIG. 1 includes a recording / reproducing unit 10, a control unit 114 (for example, a CPU (Central Processing Unit)), and a user interface unit 115 (for example, a keyboard, a mouse, or a remote controller as an input device). Etc.).

  The control unit 114 is connected to each unit (including the recording / reproducing unit 10) of the video recording / reproducing apparatus via a bus unit, and controls the operation of the entire video recording / reproducing apparatus. In addition, various processing signals are received by receiving various command signals from the user via the remote control of the user interface unit 115 and controlling each unit connected via the bus unit based on the command signals.

  The recording / reproducing unit 10 includes a tuner decoding unit 101, a selector 102, a separation / extraction unit 103 (for example, a demultiplexer), an input buffer 104, a decoding unit 105 (for example, an MPEG decoder), a network interface unit 106, a buffer management unit 107, Clock reproduction unit 108, time stamp comparison / output unit 109, time stamp addition unit 110, reading unit 111, writing unit 112, recording medium 113, output unit 116, fixed clock generation unit 117 (for example, crystal oscillator), control information generation Part 201.

  Here, the recording medium 113 is a medium that can be randomly accessed, such as a hard disk, a semiconductor memory, an optical disk, a magneto-optical disk, and a magnetic disk. The recording medium may be a removable medium such as a removable HDD 119. The output unit 116 is a display unit using a CRT (Cathode Ray Tube), LCD (Liquid Crystal Display), PDP (Plasma Display Panel) or the like, an audio output unit using a speaker or the like, or other display devices, etc. An output terminal for outputting data.

  In addition, it is assumed that no contact is made with respect to a place where lines representing flows of information, PCR, and the like intersect. However, the portion marked with a black circle is in contact and indicates that it has branched from there.

  The tuner decoding unit 101 receives a digital broadcast signal from a broadcast station via a broadcast transmission network such as a satellite, the ground, and a cable. Channel selection and detection processing are performed on the frequency of a physical or virtual channel designated via a user operation unit such as a remote controller of the user interface unit 115 and the control unit 114. Further, the MPEG2-TS (transport stream) after digital demodulation and error correction processing is output to the selector 102.

  The selector 102 performs a 3-input 1-output selection process in accordance with control from the control unit 114, and outputs the output to the separation / extraction unit 103.

  The separation / extraction unit 103 separates / extracts the transport packet of the channel (program) designated via the user operation unit such as a remote controller of the user interface unit 115 and the control unit 114 from the input MPEG2-TS, The separated / extracted transport packet is output to time stamp adding section 110. Also, the separation / extraction unit 103 is a video and audio PES (Packetized Elementary Stream) from a transport packet of a channel (program) designated via a user operation unit such as a remote controller of the user interface unit 115 and the control unit 114. Alternatively, ES (Elementary Stream) is separated and extracted and output to the input buffer 104.

  Here, ES refers to each of compressed and encoded image / sound data, and PES refers to a packet obtained by dividing the image ES or sound ES into appropriate sizes. Further, the separation / extraction unit 103 extracts a PCR (Program Clock Reference) from a transport packet of a channel (program) designated via the user operation unit such as a remote controller of the user interface unit 115 and the control unit 114, The data is output to the clock reproduction unit 108.

  The input buffer 104 temporarily stores the video / audio PES or ES from the separation / extraction unit 103. The decoding unit 105 compares the DTS (Decoding Time Stamp) / PTS (Presentation Time Stamp) corresponding to the PES or ES stored in the input buffer 104 with the STC (System Time Clock) count value from the clock reproduction unit 108. By taking the decoding / display timing, the video / audio PES or ES stored in the input buffer 104 is extracted and decoded, and the decoded video / audio is output to the output unit 116.

  The output unit 116 reproduces the decoded video / audio on the display unit / audio output unit which is an output device. Alternatively, video / audio content data or the like is output to another display device or the like via an output terminal (for example, HDMI (High-Definition Multimedia Interface)).

  The clock recovery unit 108 uses PCR to reproduce, for example, the system clock of the receiver whose frequency matches the system clock of the encoding / multiplexing unit on the broadcasting station side. The reproduced system clock is output to the STC counter in the clock recovery unit 108, the time stamp addition unit 110, and the like. In addition, the STC count value of the STC counter that operates based on the reproduced system clock is output to the decoding unit 105.

  The time stamp adding unit 110 generates a time stamp by a counter operating based on a system clock reproduced by the clock reproducing unit 108 or a crystal oscillator, for example, and the transport separated and extracted by the separation / extraction unit 103 A time stamp (ATS in FIG. 7) is added to each packet and output to the writing unit 112.

  The writing unit 112 performs a process of recording the transport packet to which the time stamp is added by the time stamp adding unit 110 on the recording medium 113. As a result, one stream having a transport packet to which a plurality of time stamps including video / audio data of a certain channel (in other words, a certain program content and downloaded content) is added is one The data file or two or more fragment data files obtained by dividing the data file is stored in the recording medium 113.

  The time stamp can also be said to be time information related to the temporal position of the transport packet to which the stamp is attached. For example, the time when the transport packet from the separation / extraction unit 103 is input to the time stamp adding unit 110, or a certain transport packet (for example, the immediately preceding or first transport packet) It can also be said that this is a time difference. As described above, this time stamp is different from a time stamp (for example, PCR, DTS, or PTS) included in advance in the transport packet.

  The buffer management unit 107 monitors the amount of unprocessed transport packets by the decoding unit 105 in the input buffer 104, and controls the reading start and stop of the reading unit 111 according to the amount.

  The reading unit 111 is controlled via the buffer management unit 107 or the control unit 114, and sequentially reads transport packets added with a plurality of time stamps included in the stream from the recording medium 113, and compares and outputs the time stamps. Output to the unit 109.

  The time stamp comparison / output unit 109 includes a counter value of a counter that operates based on a fixed clock recovery unit 117 such as a crystal oscillator, and a time stamp of a transport packet to which the time stamp read by the reading unit 111 is added. If they match, the time stamp is deleted (removed) from the transport packet and output to the selector 102 and the network interface unit 106. As described above, when the remaining amount of the input buffer 104 is monitored by the buffer management unit 107 and the reading unit 111 is controlled according to the amount, the transport is performed without comparing the counter value with the time stamp. The time stamp may be deleted from the packet and output to the selector 102 and the network interface unit 106. In particular, it is preferable to output by this method at the time of reproduction other than normal reproduction (single speed reproduction).

  The network interface unit 106 is connected to another device (recorder, display, or the like) that is an output destination / input source via a line (IEEE1394 cable, LAN cable, wireless, or the like). The time stamp comparison / output unit 109 receives a transport packet such as video / audio from which the time stamp has been deleted, and converts the transport packet into a format according to each transmission standard via a line. Output to another device that is the output destination. Also, data such as video / audio is input from another device as an input source via a line in a format according to each transmission standard, converted into a transport packet, and output to the selector 102. There may be a plurality of network interface units 106.

  The control information creation unit 201 is a part that creates AUI and SI control information for the AV stream.

Next, a recording file processing method of the video recording / playback apparatus according to the first embodiment will be described with reference to FIGS. 2A to 2C and FIG.
2A to 2C are flowcharts showing the procedure of recording file processing of the video recording / reproducing apparatus according to the first embodiment.
FIG. 3 is a diagram showing a screen for inquiring the user about the reconstruction of the recording file.

  As described above, the auxiliary information generated for the recording file such as SI is recorded as a separate file as the control information of the video data when the video is recorded and stored in the file. Removable HDD 119).

  In the present embodiment, auxiliary information is generated for a recording file that does not have auxiliary information generated for a recording file even when video recording is not being performed.

  First, when playing a recorded file (FIG. 2A: Case A), data is read from the recording medium 113, the removable HDD 119, etc., and the video data is played back through the path of the separation / extraction unit 103, the input buffer 104, the decoding unit 105, and the output unit 116. Is done.

  The control unit 114 checks whether or not the read recording file has SI (SA01). When the recording file has SI as control information, normal playback is performed (SA04). When the recording file does not have SI as control information, an inquiry screen as shown in FIG. 3 is displayed to inquire the user about the reconstruction of the recording file (SA02). Here, the generation of the SI of the recording file for the recording file will be explained to the user with the concept of “reconstruction of the recording file”.

  If the user selects the “No” button without reconfiguring (SA03), normal playback is performed (SA04). When the user selects the “Yes” button for reconfiguration (SA03), the control unit 114 performs playback from the separation / extraction unit 103, the time stamp unit 110, the writing unit 112, and the recording medium 113. The video information is sent to (or the removable HDD 119), and the control information creation unit 201 instructs the recording / playback unit to generate and store the SI for the recorded file (SA05).

  Next, when the removable HDD 119 is attached to the video recording / reproducing apparatus and an internal recording file is detected (FIG. 2B: Case B), or video data is downloaded from a video server or the like existing on a network such as the Internet. Sometimes (FIG. 2B: Case C), the control unit 114 reads out the control information of the recording file stored in the removable HDD 11 or being downloaded and checks whether or not it has SI (SB01), and the recording file 3 does not have SI as control information, an inquiry screen as shown in FIG. 3 is displayed to inquire the user about the reconstruction of the recording file (SB02).

  If the user selects the “No” button without reconfiguring (SB03), the process ends. When the user selects the “Yes” button for reconfiguration, the control unit 114 reads the recorded file from the recording medium 113 (or the removable HDD 119), and the control information creating unit 201 reads the recorded file. The recording / reproducing unit is instructed to generate and store SI (SB04).

  In FIG. 2A or 2B, the SA02 and SA03 or SB02 and SB03 steps may not be performed, and the SI may be automatically generated if there is no SI in SA01 or SB01.

  Next, when the video recording / playback apparatus is on standby (FIG. 2C: Case D), or when the time of scheduled recording file reconstruction is reached (FIG. 2C: Case E), the control unit 114 stores the recorded video. The control information of the file is read to check whether it has SI (SC01).

  When the recording file does not have SI as control information, the control unit 114 reads the recording file from the recording medium 113 (or the removable HDD 119), and the control information creation unit 201 generates SI for the recording file. The recording / reproducing unit is instructed to store the data (SC02).

  The recording file reconstruction schedule is a utility function of the video recording / playback apparatus in which a time is specified and a recording file is scheduled to be optimized. The user only has to specify the time so that he / she can use the free time during which no recording or reproduction is performed. Although not shown in the figure, the designated information is stored in the memory built in the apparatus or the recording medium 113 as control information of the video recording / reproducing apparatus.

  In addition, when shifting from the standby mode to the playback mode by a user operation or the like, the portion up to where the SI is created is stored as control information (for example, the SI is created for 30 minutes in a one-hour program). When the reproduction process is performed in the mode and the reproduction process is completed and the mode is changed to the standby mode, a function of creating the SI from the interrupted place may be added.

  In the case shown in FIG. 2C, the screen for inquiring the user to reconstruct the recording file is not displayed. In this case, the user is expected to automatically reconstruct the recording file. It is because it is thought that there is.

  As described above, the example of generating the SI in order to optimize the recording file in various cases has been described. Further, in each case, whether or not to display a screen asking the user to reconstruct the recording file May be selectable as an option.

  In each case, whether to reconstruct the recording file may be selected as an option.

  Further, in the present embodiment, the case where the recording file is reconfigured when the SI that is the option information is not included as the control information of the recording file has been described. However, an error such as omission is detected with respect to the AUI that is the AU management information. A process such as a repair process may be inserted when there is a problem.

[Embodiment 2]
Hereinafter, a second embodiment according to the present invention will be described with reference to FIG.
FIG. 4 is a block diagram showing an example of the configuration of the video recording / playback apparatus according to the second embodiment.

  In the present embodiment, the configuration of the first embodiment is slightly changed.

  That is, in the first embodiment, as shown in FIG. 1, a recording file to which SI is added is read from the recording medium 113 (or the removable disk 113a), and a reading unit 111, a time stamp comparison / output unit 109, The SI is generated by the control information creation unit 201 through the path of the selector 102, the separation / extraction unit 103, the time stamp addition unit 110, and the writing unit 112.

  This method has an advantage that the control information creation mechanism at the time of video recording can be used.

  However, the reproduction process is not necessary except for the case A described in the first embodiment. In this embodiment, in the case of Case B to Case E, the configuration is optimized so as to operate at high speed. That is, as shown in FIG. 4, in this embodiment, a recording file to which SI is added is read from the recording medium 113 (or the removable disk 113a), and then goes to the control information creation unit 201a after the reading unit 111. Thus, SI is generated, and the SI is re-stored in the recording medium 113 through a path of the writing unit 112.

  When the control information is generated through this path, the process is speeded up and the power is saved because the wasteful path is not passed.

[Embodiment 3]
Hereinafter, a third embodiment according to the present invention will be described with reference to FIGS.

First, the configuration of the video recording / reproducing apparatus according to the third embodiment will be described with reference to FIG.
FIG. 5 is a block diagram showing an example of the configuration of the video recording / reproducing apparatus according to the third embodiment.
FIG. 6 is a diagram showing a time stamp in the data structure when video data is recorded.

  In the present embodiment, an ATS error, which is a time stamp added to a TTS, is detected, and such an ATS is restored to a correct one. As described in the first embodiment, the MPEG transport stream has time information called PCR. This PCR is expected to be accurate because it is added by a broadcasting station. However, since the ATS added to the TTS is added based on the clock unique to the device, in particular, a removable HDD or the like. This causes a problem when a recorded file recorded by an external device whose clock is not accurate is captured and reproduced. Alternatively, even if the ATS addition processing on the device side is performed normally, if the content data input via the network cannot be properly processed due to network traffic problems, etc., the TS input to the device As a result, the ATS is added with low accuracy (when PCR is considered as a reference).

  In the present embodiment, as shown in FIG. 5, the time stamp repairing unit 120 is provided in the configuration of the first embodiment.

  The recorded file is read by the reading unit 111, an error is detected by the time stamp comparison / output unit 109, the ATS having the error is repaired by the time stamp repairing unit 120, and the recording medium 113 (or the recording medium 113 (or by the writing unit 112). , And stored again in the removable HDD 119).

  As described above, the MPEG transport stream packet is stored in the recording medium 113 (or the removable HDD 119) in the form of a TTS packet to which an ATS, which is a time stamp that has arrived at the apparatus, is added.

Here, the PCR is stored in the adaptation field of the packet. Here, assuming that there is a packet having the n-th PCR, the packet is TTS _n , the PCR value is PCR _n , and the ATS value is ATS _n .

Similarly, assuming that there is a packet having PCR in the next mth, the packet is set as TTS _m , the PCR value is set as PCR _m , and the ATS value is set as ATS _m .

  At that time, the time stamp comparison / output unit 109 compares the difference between the PCR value and the ATS value of each packet, and evaluates T (m, n) represented by the following (Equation 1).

_{T (n, m) = (} PCR n -PCR m) -K × (ATS n -ATS m) ... ( Equation 1)
Here, K is a constant for matching the units of PCR and ATS.

When T (n, m) becomes larger than a certain threshold Δ, the time stamp adding unit 110 satisfies the following (Equation 2) so that T (n, m) is as close to 0 as possible. Rewrite ATS _m . That is, the result obtained by giving the corrected offset value to the original value is rewritten.

T (n, m) ≦ Δ (Expression 2)
Then, the data is written to the recording medium 113 (or the removable HDD 119) via the writing unit 112.

  As the timing for storing this time stamp, Case B to Case E as described in the first embodiment can be considered.

  The TTS in which the PCR is inserted exists at a period of about 40 to 100 msec, but the correction offset determined in the above (Equation 1) and (Equation 2) is used for the correction of the ATS of the TTS in which the PCR is not inserted. Correct based on the value. That is, the ATS of TTS between TTSn and TTSm is corrected using the corrected offset value.

It is a block diagram which shows an example of a structure of the video recording / reproducing apparatus which concerns on 1st embodiment. It is a flowchart which shows the procedure of the video recording file processing of the video recording / reproducing apparatus which concerns on 1st embodiment (the 1). It is a flowchart which shows the procedure of the video recording file processing of the video recording / reproducing apparatus which concerns on 1st embodiment (the 2). It is a flowchart which shows the procedure of the video recording file processing of the video recording / reproducing apparatus which concerns on 1st embodiment (the 3). It is a figure which shows the screen which inquires the user about reconstruction of a recording file. It is a block diagram which shows an example of a structure of the video recording / reproducing apparatus which concerns on 2nd embodiment. It is a block diagram which shows an example of a structure of the video recording / reproducing apparatus which concerns on 3rd embodiment. It is a figure which shows the time stamp in a data structure when video data is recorded. It is a schematic diagram which shows an example of a TTS packet. It is a schematic diagram which shows an example of the relationship between the TTS packet and AU in the AV stream memorize | stored in a recording medium. It is a schematic diagram which shows an example of the relationship between AU and I picture of AV stream memorize | stored in a recording medium, and the information (SI) accompanying it.

Explanation of symbols

DESCRIPTION OF SYMBOLS 101 ... Tuner decoding part 102 ... Selector 103 ... Separation / extraction part 104 ... Input buffer part 105 ... Decoding part 106 ... Network interface part 107 ... Buffer management part 108 ... Clock reproduction part 109 ... Time stamp comparison / output part 110 ... Time stamp Addition unit 111 ... Reading unit 112 ... Writing unit 113 ... Recording medium 114 ... Control unit 115 ... User interface unit 116 ... Output unit 117 ... Fixed clock generation unit 120 ... Time stamp restoration unit 201, 201a ... Control information creation unit 202 ... Read Control unit

Claims (12)

A recording unit for recording content information;
A control information creation unit for creating control information for controlling content information;
A recording control unit for adding the control information created by the control information creating unit to content information and recording the content in the recording unit;
It is determined whether or not the control information is included in the content recorded in the recording unit at a predetermined timing. When the control information is not included , the control information generation unit generates control information for the content. And a control unit that controls the recording control unit to add the control information to the content and record it in the recording unit. It receives content information transmitted includes a plurality of predefined units packetized information, the stream of the content information, you generate a control information recorded on a recording medium together with the content information recording In the device
A control information creation unit for creating the control information;
A control unit for determining whether or not the control information is recorded ,
The control unit determines whether the control information is recorded together with the content information recorded on the recording medium at a predetermined timing, and when the control information is not recorded, when the content information is reproduced. , video recording and reproducing apparatus characterized by instructing to generate the control information of the content information to the control information creation unit. Recording that receives content information that is transmitted including a plurality of unit packet information defined in advance, generates control information for the content information stream, and is recorded on the recording medium together with the content information In the device
A control information creation unit for creating the control information;
A control unit for determining whether or not the control information is recorded,
The control unit determines whether the control information is recorded together with the content information recorded on the recording medium at a predetermined timing. If the control information is not recorded, the control unit stores the control information in the storage medium. The recording apparatus is configured to instruct to read out the content information, and to instruct the control information creation unit to generate control information of the content information with respect to the read recording file. The predetermined timing is any one of when a recording file is detected in the removable medium, when video data is downloaded via the network, when the apparatus is in a standby mode, or when a process for generating control information is scheduled. The recording apparatus according to claim 1, comprising one or more. 5. The recording apparatus according to claim 1, wherein the control information includes I picture position information in the MPEG standard. A reading unit for reading the content information from the recording medium;
A writing unit for writing the content information to the recording medium,
The content information read by the reading unit is output to the control information creating unit,
The control information generated by the control information creation unit is output to the writing unit,
The recording apparatus according to claim 3, wherein the writing unit stores the control information in the recording medium. In a recording method for receiving content information transmitted including a plurality of pre-specified unit packetized information, generating control information for the content information stream and recording the control information together with the content information on a recording medium ,
Determining whether the control information is recorded together with the content information recorded on the recording medium at a predetermined timing;
And a step of generating the control information and recording it on the recording medium together with the content information when the control information is not included together with the content information recorded on the recording medium. 8. The recording method according to claim 7, wherein the control information includes I picture position information in the MPEG standard. Content information transmitted including a plurality of pre-defined unit packet information is received, and the content information stream packet includes a first time stamp, and the content information stream is In the video recording / playback apparatus in which a second time stamp is added on the device side to the configured packet and recorded on the recording medium as a recording file,
Timestamp comparison / output unit,
A time stamp repair section;
A control unit that instructs the recording / playback unit to read and write the recording file;
The control unit instructs the recording / playback unit to read the recorded file at a predetermined timing, and the time stamp comparison / output unit determines the difference between the first time stamp and the difference between the second time stamps. And when the difference between the difference between the first time stamp and the difference between the second time stamps is larger than a predetermined threshold, the second time stamp is determined as the difference between the first time stamp and the difference between the first time stamp and the second time stamp. A video recording / reproducing apparatus, wherein the recording / reproducing unit is instructed to rewrite the data so that the difference from the second time stamp difference is equal to or less than a predetermined threshold, and rewrite the data of the rewritten recording file. . The predetermined timing is any one of when a recording file is detected in a removable medium, when the recording file is downloaded via a network, when the apparatus is in a standby mode, or when a time stamp repair process is scheduled. The video recording / reproducing apparatus according to claim 10, comprising one or more. 11. The video recording / reproducing apparatus according to claim 10, wherein the first time stamp is a PCR (Program Clock Reference) in the MPEG standard. Content information transmitted including a plurality of pre-defined unit packet information is received, and the content information stream packet includes a first time stamp, and the content information stream is In the recording file processing method of the video recording / playback apparatus in which a second time stamp is added on the device side to the packet to be configured and recorded on the recording medium as a recording file,
The video recording / reproducing apparatus comprises:
Timestamp comparison / output unit,
A time stamp repair section;
A control unit that instructs the recording / playback unit to read and write the recording file;
A procedure in which the control unit instructs the recording / playback unit to read out the recording file at a predetermined timing;
The time stamp comparison / output unit compares the difference between the first time stamp and the difference between the second time stamps;
When the difference between the first time stamp and the difference between the second time stamp is greater than a predetermined threshold, the time stamp repairing unit determines the second time stamp as the difference between the first time stamp and the difference between the first time stamp and the second time stamp. Rewriting procedure so that the difference from the second timestamp difference is less than or equal to a predetermined threshold;
A recording file processing method for a video recording / reproducing apparatus, comprising: a step of instructing the recording / reproducing unit to rewrite data of the rewritten recording file.

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