JP3655571B2 - Information recording / reproducing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a DVD recording / reproducing apparatus for recording and reproducing video and audio data.
[0002]
[Prior art]
In recent years, a moving image-compatible optical disc playback apparatus that plays back an optical disc on which data such as video and audio is recorded has been developed, and is widely used for purposes such as movie software and karaoke, such as LD and video CD.
[0003]
Among them, a DVD standard that uses the AC3 audio compression method using the MPEG2 (Moving Image Coding Expert Group) method that has been internationally standardized has been proposed.
[0004]
According to the MPEG2 system layer, this standard supports MPEG2 for video compression, AC3 audio for audio, and MPEG audio, and sub-picture data with run-length compression of bitmap data for subtitles, special playback such as fast-forward rewind Control data (navigation pack) is added.
[0005]
Furthermore, this standard supports ISO9660 and micro UDF so that data can be read by a computer.
[0006]
In addition, as a standard of the media itself, following the DVD-ROM which is a medium used in DVD-video, the DVD-RAM standard has been completed, and DVD-RAM drives have begun to spread as computer peripheral devices.
[0007]
Therefore, a VR-DVD (Video Recording DVD) standard, which is a DVD video standard capable of real-time recording / playback using the DVD-RAM, has been completed, and DVD video is now on the market based on this standard. .
[0008]
In that case, some requests that could not be realized by the current VTR can be realized by becoming a disk medium.
[0009]
Here, there is a demand for converting recorded VR-DVD data into a DVD-ROM Video standard for reproduction on a generally inexpensive DVD-Player, recording it on a DVD-R, and enjoying it widely.
[0010]
[Problems to be solved by the invention]
When dubbing recorded VR-DVD data to the DVD-ROM Video standard, VR-DVD and DVD-ROM Video have a drawback that they cannot be easily converted depending on the resolution and audio mode supported.
[0011]
Also, if the compression rate at the time of moving image compression is low and the recording rate is high, there is a possibility that one title may not fit in the DVD-R.
[0012]
Accordingly, an object of the present invention is to provide a recording / reproducing apparatus capable of performing dubbing processing while converting the format from, for example, VR-DVD to DVD-ROM Video using a simple configuration.
[0013]
[Means for Solving the Problems]
In the present invention, dubbing is efficiently performed by decoding the encoded video data once and encoding again with the digital data as it is.
[0014]
That is, the present invention provides a decoder unit for decoding recorded data in an information recording / reproducing apparatus capable of recording / reproducing on a recordable recording medium,
An encoder unit that encodes an input signal, a video / audio signal from an external input, an external signal input unit, a signal from the external signal input unit and a signal from the decoder unit are switched, and one signal is A switching unit that supplies the encoder unit; and a switching instruction unit that generates a switching signal to the switching unit.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
In DVD-video, data is stored in a normal file format. Furthermore, the title corresponds to, for example, one movie, and a plurality of titles are included in one disc. A collection of the titles is called a title set, and the title set is composed of a plurality of files. In the recording / playback DVD, one moving image VOBS file exists on one disk, and the original PGC records the reproduction order used when reproducing in the recording order.
[0016]
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0017]
As shown in FIG. 2, the DVD has a directory for each standard, DVD_RTAV for recording / playback DVD, AUDIO_TS for DVD-audio, and VIDEO_TS for DVD-video. Each recording data exists in this directory.
[0018]
Furthermore, in DVD-video, a file called VMG exists as information for managing this disc in one disc.
[0019]
Furthermore, the title set (hereinafter referred to as VTS) includes a VTSI management information file for managing this VTS, a video file composed of video data, and a VTSI backup file.
[0020]
In the recording / playback standard, the VMGI (VR_MANGR.IFO) is configured by combining the VMGI and the VTSI, and the video data file (VR_MOVIE.VRO) is managed.
[0021]
The video files are managed in a hierarchical structure as shown in FIG. 3, one video object set (VOBS) is composed of a plurality of VOBs, and one VOB is a plurality of video object units (hereinafter referred to as VOBU). .). A VOBU is composed of a pack composed of a plurality of various types of data. One pack is composed of one or more packets and a pack header, and each video data and audio data is recorded in this packet.
[0022]
Here, a pack is a minimum unit for performing data transfer processing. Further, the minimum unit for performing logical processing is a cell, and logical processing is performed in this cell unit. The order of reproducing data is defined by PGC (Program Chain). A plurality of PGs (Programs) are registered in the PGC, and cells are registered in the PG.
[0023]
In this cell, the number of the VOB to be reproduced and the reproduction time in the VOB are registered, and the VOB is reproduced according to the reproduction information of this cell.
[0024]
It is PGCI that actually records the structure of this PGC. The reproduction process is performed according to this PGCI, and the PGCI is created at the time of recording or editing.
[0025]
In the recording / playback DVD, a special PGC for playback in the recording order (VTR-like playback processing) is referred to as an original PGC, and information on the original PGC is recorded in ORG_PGCI. A PGC created by editing or the like is referred to as a user-defined PGC, and information on the user-defined PGC is recorded in UD_PGCI.
[0026]
From the above, there is one ORG_PGC per disk, and there are a plurality of UD_PGCs.
[0027]
Next, the operation of this embodiment will be described below.
[0028]
As shown in FIG. 1, the recording / playback apparatus according to the present embodiment includes an MPU unit 100, a decoder unit 200, an encoder unit 300, a display unit 410, a TV tuner unit 420, an STC unit (System Time Clock) 430, and a D-PRO unit. 440, temporary storage unit 450, drive unit 460, key input unit 470, V mixing unit 480, frame memory unit 490, and TV D / A unit 500.
[0029]
The encoder unit 300 includes an A / D unit 301, a video encoding unit 302, an audio encoding unit 303, an SP encoding unit 304, a formatter unit 306, a buffer memory unit 307, and digital data and an A / D unit from the decoder unit 200. The switching unit 308 is configured to switch digital data from 301. The decoder unit 200 includes a separation unit 201, a video decoding unit 202, an SP decoding unit 203, an audio decoding unit 204, a V-PRO unit 205, and an audio D / A unit 206.
[0030]
Here, the switching unit 308 switches between the digital data obtained by A / D external input and the tuner signal and the digital data from the decoder unit 200 by the switching signal from the MPU unit 100.
[0031]
Moreover, as shown in FIG. 23, after converting into an analog signal, returning to an input and switching with the signal returned by the switching part is also considered. In this case, the switching is performed by an analog signal, and the switch is an analog switch. The digital switching process requires 9 switching circuits (8 data, 1 clock), 3-4 circuits (bit clock, LR clock, data, master clock) and many switching circuits. In comparison, the switching process using an analog signal requires only one circuit for video and two circuits for left and right, making the circuit simple, but the image quality and sound quality are reduced due to the extra A / D and D / A. There is.
[0032]
The video signal flow of the apparatus shown in FIG. 1 is as follows.
[0033]
First, the input AV signal is digitally converted by the A / D unit 301. The digital data from the A / D unit 301 is input to the switching unit 308 together with the decoded digital data from the decoder unit 200, and is switched to one of the digital data by a switching signal from the MPU unit 100.
[0034]
The digital data output from the switching unit 308 is input to each encoding unit. The video signal is input to the video encoding unit 302, the audio signal is input to the audio encoding unit 303, character data such as teletext is input to the SP encoding unit 304, the video signal is MPEG-compressed, and the audio signal is AC3 compressed or MPEG audio compressed. The character data is run-length compressed.
[0035]
Further, in each of the encoding units 302 to 304, when the compressed data is packed, it is packetized so that one pack becomes 2048 bytes, and is input to the formatter unit 306. In the formatter unit 306, each packet is packed, further multiplexed, and sent to the D-PRO unit 440.
[0036]
At this time, for example, VOBU is set for each GOP (Group of Picture), and the segmentation information at that time is stored in the buffer memory unit 307, and when the segmentation information is accumulated to some extent, it is transferred to the MPU unit 100. Based on the information, TIME MAP Info. Create
[0037]
Here, as the segmentation information (VOBU segmentation information), the size of the VOBU, the playback time from the beginning to the end of the VOBU, the end address of the I picture from the beginning of the VOBU, and the like can be considered. It is also conceivable that the formatter unit 306 creates Time Map Information directly based on the segmentation information and passes it to the MPU unit 100 in the form of TMP.
[0038]
In the D-PRO unit 440, an ECC block is formed every 16 packs, error correction data is attached, and the drive unit 460 records the data on a disk. Here, when the drive unit 460 is busy because of seeking or track jumping, the drive unit 460 is put in the temporary storage unit 450 and waits until the drive unit 460 is ready.
[0039]
In the recording / playback DVD, one video file is stored in one DISK. Further, PGCI for controlling the playback order is recorded in M_AVFITI (Movie AV File Information Table Information) in VMG that manages video data, and among these, TMAPIs in M_AVFITI are created based on the segmentation information, and in the order of recording Setting PGCI is reflected in ORG_PGCI.
[0040]
Here, PGCI is included in VMG as shown in FIG. PGCI includes PGC_GI (the number of PGs included in PGC and the number of CELLs), PGIT (Program type, number of CELLs in PG, primary text information, SRP number to item text, thumbnail pointer), CI_SRPT (CELL search pointer table), CIT (CELL information table)).
[0041]
Further, CIT is composed of CI # 1 to #j. CI is C_GI (CELL type, search pointer to VOBI: VOB number to be played back by CELL, playback start time and end time of CELL) and C_EPI # 1 to #k. (EP type (with / without text information), EP playback time, text information).
[0042]
As information for reproducing a VOB, M_VOBI is included in the VMG as shown in FIG. This M_VOBI includes TMAPI, and this TMAPI includes TMAP_GI (number of TMUs, number of VOBU_ENTs, time offset, address offset: file pointer from the beginning in the video file of this VOB), TM_ENT # 1 to #n ( VOBU_ENT number every 10 s, time difference, VOBU address: file pointer from the beginning in the video file of this VOBU, VOBU_ENT # 1 to #m (relative address from the beginning of VOBU to the last data of one picture, VOBU playback time , VOBU size).
[0043]
Next, the recording process of the apparatus shown in FIG. 1 will be described according to the flowchart of FIG. In this process, the MPU unit 100 controls each unit as follows.
[0044]
First, as in steps S1 and S2, the MPU unit 100 reads file system data, checks whether there is free space, and if there is no free space, displays that fact and ends. If there is free space in step S2, pre-recording processing is performed and a write address is determined.
[0045]
In step S <b> 5, recording initial setting is performed for the encoder unit 300. At this time, the PG, CELL, and VOBU delimiter conditions are transmitted to the formatter unit 306, and the formatter unit 306 automatically delimits them. Also, when the alignment process is performed, the formatter unit 306 is set.
[0046]
In step S <b> 6, a recording start command is transmitted to the encoder unit 300. When the first recording unit block is stored in the buffer memory unit 307 as in steps S7 and S8, a write address, a write length, and a write command are issued to the drive unit 460.
[0047]
In steps S9 and S10, it is checked whether or not the segmentation information has been accumulated. If the segmentation information has been accumulated, the segmentation information is read from the formatter unit 306. The interruption flow during recording is shown as steps S21 to S23 in FIG.
[0048]
In step S11, it is checked whether or not data for one recording unit block has been stored in the buffer memory unit 307. If not, the process proceeds to step S13. When data for one recording unit block is accumulated, recording processing during recording is performed as in step S12, and a recording address, a recording length, and a recording command are issued to the drive unit 460.
[0049]
In step S13, it is checked whether or not a recording end key has been entered. If there is a stop key input, the process proceeds to step S18. If there is no recording end key input in step 13, the remaining capacity is calculated as in steps S14 to S16, and it is determined whether the remaining capacity has fallen below a certain value. Processing is performed to determine whether there is a recordable capacity as in step S17. If there is sufficient remaining capacity, the process proceeds to step S9. Then, a recording end process is performed as in step S18.
[0050]
Among these, the processing at the start of recording will be described according to the operation flow of FIG. In this process, the MPU unit 100 controls each unit as follows.
[0051]
As in steps S31 to S33, the MPU unit 100 checks the file system. If there is no file system, the MPU unit 100 constructs a file system and a DVD_RTR directory, and proceeds to step S36. In steps S34 and S35, a directory check is performed. If there is no RTR directory, an RTR directory is created and the process proceeds to step S36. In steps S36 and S37, an error check is performed. If an error occurs in the above process, the message “An error has occurred in the file system” is displayed and the process ends.
[0052]
In steps S38 to S40, it is checked whether the VMG is in the DISK. If there is no VMG, a VMG table is built in the work RAM 101. If there is, the VMG table is read from the DISK and the work RAM 101 of the MPU unit 100 is read. Expand within. Further, encoding attribute information (STI) selection or setting processing for recording is performed. STI information is attribute information at the time of encoding, and includes video resolution, NTSC / PAL selection, aspect ratio, number of audio streams, number of SP streams, audio stream coding scheme, sampling frequency, number of channels, audio The bit rate is configured as follows. However, there are two ways to set the STI information, when setting before recording and when setting at the end of recording.
[0053]
In this attribute information (STI) selection or setting process, the attribute information to be recorded is compared with the STI information in the VMG recorded on the disk. If there is the same information, the STI number is stored in the work RAM 101. If there is no STI number for the VOB at the time of recording, the STI information is constructed from the attribute information to be recorded, added to the STI information in the VMG, and the added STI number is used as the work RAM 101. And the STI number for the VOB at the time of recording.
[0054]
The VMG in the initial state constructed in this way may be saved as a file in an area designated by the file system in the disk. Here, even if it is not stored, the VMG having the updated contents reflecting the recorded contents may be stored at the end of the recording.
[0055]
In steps S41 and S42, an error check is performed. If an error occurs, a message “Could not create management data” is displayed, and the process is terminated.
[0056]
Next, the processing operation at the end of recording will be described with reference to the operation flowchart of FIG. In this process, the MPU unit 100 controls each unit as follows.
[0057]
In step S51, the MPU unit 100 updates the VMG in the work based on the segmentation information received from the formatter unit 306, and creates a PGCI that determines the playback order. Next, as in steps S52 to S54, it is checked whether the VOBS file (VRO file in FIG. 2) exists in the directory record information under the RTR_DVD directory in the file system. If there is, the VRO file information is displayed. If there is no update, the directory record information of the VRO file is added to the directory (to the recorded video file information).
[0058]
In steps S55 to S57, it is checked whether there is an IFO file (RTR VMG file in FIG. 2) in the directory record information under the RTR_DVD directory. If there is no IFO file, the VMG built in the work RAM 101 is recorded in the free area. Then, IFO file information is added to the directory record information under the RTR_DVD directory. If there is, the IFO data is updated with the VMG data in the work at the position of the IFO file, and the directory record information under the RTR_DVD directory Update. At this time, if the STI registration work is not performed before recording, the recorded video attribute and audio attribute are registered as STI.
[0059]
Next, data processing during reproduction will be described with reference to the flowchart of FIG. In this process, the MPU unit 100 controls each unit as follows.
[0060]
As in steps S61 and S62, the MPU unit 100 checks whether or not the disc is a rewritable disc (R, RW, RAM). If the disc is not a rewritable disc, the MPU unit 100 returns that fact and ends. In steps S63 and S64, the file system of the disk is read to check whether or not there is a volume structure. If there is no volume structure, “not recorded” is displayed and the process ends.
[0061]
In step S65, it is checked whether or not there is a DVD_RTR directory. If there is no directory, “not recorded” is displayed and the process ends. In step S66, it is checked whether or not an error has occurred. If an error has occurred, "Error has occurred in the file system" is displayed and the process ends.
[0062]
In step S68, it is determined whether there is a VMG. If there is no VMG, “No video recording” is displayed and the process ends. As in steps S69 and S70, if there is a VMG, the VMG is read to check whether there is a VRO file. If there is no VMG, “NO RECORDING” is displayed and the process ends.
[0063]
In step S72, the VMG file is read, the program and cell to be played back are determined (the user selects them), and the file pointer (logical address) at which playback is started is determined. Here, when playback in the recording order is selected, playback is performed according to ORG_PGCI. When playback is performed for each program, playback is performed according to UD_PGC of a number corresponding to the program to be played back.
[0064]
In step 73, initialization of each decoder is performed. Further, as in steps S74 to S79, cell playback processing (later) is performed to check whether or not playback has ended. If it has ended, an error check is performed. If an error has occurred, a message to that effect is displayed. If it is not an error, a reproduction end process is performed, and this operation ends.
[0065]
If playback has not ended in step S75, the next cell is determined from PGCI as in steps S80 to S84, and it is checked whether the decoder settings (resolution, etc.) have been changed. The changed attribute is set in the decoder so that the decoder setting is changed at the next sequence end code (at the end of VOB).
[0066]
In steps S83 and S84, it is checked whether the connection is seamless. If the connection is seamless, the operation mode of the video decoder is set to the free-run mode (decoding and displaying according to the video synchronization signal instead of decoding and displaying according to the STC). Mode), the seamless connection flag is set, and the process proceeds to step S74.
[0067]
Next, cell playback processing will be described with reference to FIG. In this process, the MPU unit 100 controls each unit as follows.
[0068]
First, as in step S91, the MPU unit 100 determines a cell start file pointer (logical block address) and an end address file pointer (logical block address) by PGCI and TMAPI, and substitutes the cell start FP as a read FP. The value obtained by subtracting the start file pointer from the last file pointer is set as the remaining cell length. Further, a read process during reproduction is executed, and a read address and a read size are determined from the start file pointer.
[0069]
In steps 92 to S94, the read unit size to be read is compared with the remaining cell length, and if the remaining cell length is large, a value obtained by subtracting the read unit size to be read from the remaining cell length is set to read the read length. Set to unit length. If it is smaller, the read length is set to the remaining cell length, and the remaining cell length is set to 0.
[0070]
In step 95, the read address, read length, and read command are transmitted to the drive unit 460. In step 96, it is checked whether the transfer has started. In steps S97 and S98, a value obtained by adding the read FP and the read length set in step S95 to the read FP is substituted, and it is checked whether or not seamless connection is being performed. When the seamless connection is in progress, the decoder is shifted to the normal mode and the SCR is read.
[0071]
In step S99, it is checked whether or not the transfer is completed. If the transfer is completed, the remaining cell length is checked as in step S106. If it is not “00”, the process proceeds to step S93, where “00” is set. In this case, this process is terminated.
[0072]
If the transfer is not completed in step S99, the key input is checked as in steps S100 to S105. If special playback is to be performed, the direction is set, and the read FP is calculated using TMAPI. Then, the reading process at the time of special reproduction is performed, and this process is terminated. Otherwise, the process proceeds to step S99.
[0073]
The special reproduction purpose FP is obtained from TMAPI so as to skip a certain time. At this time, it is also conceivable to obtain a FP by skipping a certain number of VOBUs instead of a certain time. At this time, when the end of the cell is reached, the next cell information is read by PGCI, TMAPI is selected from the VOB number used by the cell (1TMAPI exists in 1 VOB), and read FP is similarly performed. Ask. If there are no more cells, the process ends there.
[0074]
Next, an embodiment of the dubbing process according to the present invention will be described.
[0075]
In this case, DVD data in VR-DVD format is recorded in the HDD (hard disk drive) of the temporary storage unit 450, the DVD data is decoded, further converted to the DVD-ROM Video format, and recorded on the DVD-R. Will be explained. However, the dubbing source recording medium and data format, and the dubbing destination recording medium and data format are not limited to this embodiment.
[0076]
FIG. 12 shows a display example of the display unit 410 when dubbing, and FIG. 13 is a flowchart showing the dubbing processing operation.
[0077]
When the user designates the dubbing process, the MPU unit 100 executes the following process.
[0078]
First, as in step S111, the MPU unit 100 displays all title names and playback times. In step S112, the user is asked to select a title and further input a rate for recording. If it is determined in advance, it is not necessary.
[0079]
In step S113, a message that dubbing has started is displayed. Here, as shown in FIG. 12, there are two methods: a method of displaying on the TV screen and a method of displaying on the main body. In step S114, a signal is sent to the switching unit 308 so that the signal from the decoder unit 200 is input to the encoder unit 300. From here, reproduction processing and recording processing are performed in parallel.
[0080]
On the playback side, when the playback is not performed on the decoder unit 200 as in step S115, the blue screen is set to appear. The following is the same as normal playback processing.
[0081]
On the recording side, dubbing recording start processing is performed (described later) as in step S116. Step S117 is the same as the recording process of FIG. However, the MPU unit 100 performs format conversion by switching parameters such as resolution. In step S118, dubbing recording end processing is performed (described later).
[0082]
After the reproduction and recording are completed, management data is created as in steps S119 and S120, the switching unit 308 is set to switch to the external input or the tuner input signal, and this process is terminated.
[0083]
Here, as dubbing recording start processing, it is necessary to detect when the decoder unit 200 has started playback, and then start recording.
[0084]
For this, four methods are conceivable as shown in FIGS.
[0085]
First, as shown in FIG. 14, a blue back is output from the decoder unit 200 to detect the end of the blue back and start recording (S131). In this case, since the encoder unit 300 has the frame memory 302F for encoding, it is only necessary to compare the previous image with the next image to determine whether the image is a blue back (S131).
[0086]
Second, as shown in FIG. 15, the MPU unit 100 monitors and detects the status (decoding start) when the STC 430 in the decoder unit 200 is reset, and the encoder unit 300 is instructed to start the encoding at that timing. Is output (S132).
[0087]
Third, as shown in FIG. 16, the MPU unit 100 issues a decoding start command, confirms that the reproduction data has started to be transferred from the D-PRO unit 440 to the separation unit 201, and then starts encoding to the encoder unit 300 after a predetermined time has elapsed. An instruction is output (S133).
[0088]
Fourthly, as shown in FIG. 17, the user views the TV screen and asks the user to press the recording key when he / she likes it, and outputs an encoding start command to the encoder unit 300 at that timing (S134).
[0089]
Furthermore, as dubbing recording end processing, it is necessary to detect when the decoder unit 200 has finished playback and then end recording.
[0090]
For this, four methods are conceivable as shown in FIGS.
[0091]
First, as shown in FIG. 18, after decoding is completed, the MPU unit 100 is set to output the blue back from the decoder unit 200, detects that the blue back is output, and ends the recording. (S141). Since the encoder unit 300 has the frame memory 302F for encoding as in the recording start process, it is only necessary to compare the previous image with the next image and determine whether it is a blue back.
[0092]
Second, the MPU unit 100 monitors the status register 207 in the decoder unit and detects that the buffer memory 206 in the decoder unit 200 has become less than a certain amount as shown in FIG. After confirming that it is close to the playback end time of the current title, an encoding end command is output to the encoder unit 300 after a predetermined time has elapsed (S142). Here, the reproduction time can be obtained from the PGCI CIT in FIG. 4 and the VOBI TMAPI in FIG.
[0093]
Third, as shown in FIG. 20, after confirming that the last reproduction data has been transferred based on PGCI, the MPU unit 100 outputs an encoding end command to the encoder unit 300 after a predetermined time (S143).
[0094]
Fourth, the user views the TV screen and asks the user to press the STOP key at any time, and outputs an encoding end command to the encoder unit 300 (S144).
[0095]
Finally, after the recording is finished, a process for creating management data is performed. At this time, the management information of the reproduction data (PGCI in FIG. 4) as shown in FIG. 22 and the management information with the value set in the encoder unit 300 at the time of recording are modified to fit the recording format and recorded on the disc.
[0096]
As described above, the recording data can be converted from the VR-DVD format to the DVD-ROM Video format and recorded on the DVD-R.
[0097]
【The invention's effect】
As described above, according to one embodiment of the present invention, it is possible to construct a system that can perform dubbing processing while converting the format from VR-DVD to DVD-ROM Video using a simple configuration.
[Brief description of the drawings]
FIG. 1 is a block diagram showing the overall configuration of a recording / playback apparatus according to an embodiment of the present invention.
FIG. 2 is a view showing an example of a directory structure of a DVD.
FIG. 3 is a structural diagram of a Video Object Set (VOBS).
FIG. 4 is a diagram showing the contents of C_PBI.
FIG. 5 is a view showing the contents of VOBU_ENT.
FIG. 6 is a flowchart showing a recording operation according to the present invention.
FIG. 7 is a flowchart showing an interrupt operation during recording according to the present invention.
FIG. 8 is a flowchart showing a pre-recording processing operation according to the present invention.
FIG. 9 is a flowchart showing a post-recording processing operation according to the present invention.
FIG. 10 is a flowchart showing a reproduction operation according to the present invention.
FIG. 11 is a flowchart showing a cell reproduction operation according to the present invention.
FIG. 12 is a view showing a screen display example during dubbing according to the present invention.
FIG. 13 is a flowchart showing a dubbing processing operation according to the present invention.
FIG. 14 is a diagram showing a first example of dubbing recording start processing according to the present invention.
FIG. 15 is a diagram showing a second example of dubbing recording start processing according to the present invention.
FIG. 16 is a diagram showing a third example of dubbing recording start processing according to the present invention.
FIG. 17 is a diagram showing a fourth example of dubbing recording start processing according to the present invention.
FIG. 18 is a diagram showing a first example of dubbing recording end processing according to the present invention.
FIG. 19 is a diagram showing a second example of dubbing recording end processing according to the present invention.
FIG. 20 is a diagram showing a third example of dubbing recording end processing according to the present invention.
FIG. 21 is a diagram showing a fourth example of dubbing recording end processing according to the present invention.
FIG. 22 is a flowchart showing management information creation processing operation at the end of dubbing according to the present invention;
FIG. 23 is a block diagram showing the overall configuration of a recording / playback apparatus according to another embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 100 ... MPU part, 200 ... Decoder part, 300 ... Encoder part, 410 ... Display part, 420 ... TV tuner part, 430 ... STC part, 440 ... D-PRO part, 450 ... Temporary storage part, 460 ... Drive part, 470 ... Key input part, 480 ... V mixing part, 490 ... Frame memory part, 500 ... D / A part for TV

Claims (9)

In an information recording / reproducing apparatus capable of recording / reproducing on a recordable recording medium,
A decoder unit for decoding the recorded data;
An encoder that encodes the input signal;
An external signal input unit for receiving video and audio signals from the external input;
A switching unit that switches a signal from the external signal input unit and a signal from the decoder unit and supplies one signal to the encoder unit;
A switching instruction unit for generating a switching signal to the switching unit;
When the decoded data is encoded by the encoder while being decoded by the decoder, new management information is obtained according to the data management information before the decoding and the parameters at the time of the encoding. A management information update unit for creating
An information recording / reproducing apparatus comprising: In an information recording / reproducing apparatus capable of recording / reproducing on a recordable recording medium,
A decoder unit for decoding the recorded data;
An encoder that encodes the input signal;
An external signal input unit for receiving video and audio signals from the external input;
A switching unit that switches a signal from the external signal input unit and a signal from the decoder unit and supplies one signal to the encoder unit;
A switching instruction unit for generating a switching signal to the switching unit;
A display unit for displaying that the decoding process and the encoding process are being performed when the decoding process is performed by the encoder unit while performing the decoding process by the decoder unit;
An information recording / reproducing apparatus comprising: In an information recording / reproducing apparatus capable of recording / reproducing on a recordable recording medium,
A decoder unit for decoding the recorded data;
An encoder that encodes the input signal;
An external signal input unit for receiving video and audio signals from the external input;
A switching unit that switches a signal from the external signal input unit and a signal from the decoder unit and supplies one signal to the encoder unit;
A switching instruction unit for generating a switching signal to the switching unit;
When the decoding process is not performed, a constant color setting unit that sets the decoder unit to output a video of a constant color;
An encoding period setting unit that starts encoding from the next video of the set color video and sets the encoder unit to encode up to the color video;
An information recording / reproducing apparatus comprising: In an information recording / reproducing apparatus capable of recording / reproducing on a recordable recording medium,
A decoder unit for decoding the recorded data;
An encoder that encodes the input signal;
An external signal input unit for receiving video and audio signals from the external input;
A switching unit that switches a signal from the external signal input unit and a signal from the decoder unit and supplies one signal to the encoder unit;
A switching instruction unit for generating a switching signal to the switching unit;
An STC reset detection unit for detecting an STC reset of the decoder unit;
In response to a detection signal from the detection unit, encoding instruction means for instructing the encoder unit to start encoding processing;
An information recording / reproducing apparatus comprising: In an information recording / reproducing apparatus capable of recording / reproducing on a recordable recording medium,
A decoder unit for decoding the recorded data;
An encoder that encodes the input signal;
An external signal input unit for receiving video and audio signals from the external input;
A switching unit that switches a signal from the external signal input unit and a signal from the decoder unit and supplies one signal to the encoder unit;
A switching instruction unit for generating a switching signal to the switching unit;
The read reproduction data is transferred to the decoder unit, and after issuing a decode command, an encode start timing detection unit that detects that a certain time has elapsed,
Encoding instruction means for instructing the encoder unit to start encoding in response to a signal from the detection unit;
An information recording / reproducing apparatus comprising: In an information recording / reproducing apparatus capable of recording / reproducing on a recordable recording medium,
A decoder unit for decoding the recorded data;
An encoder that encodes the input signal;
An external signal input unit for receiving video and audio signals from the external input;
A switching unit that switches a signal from the external signal input unit and a signal from the decoder unit and supplies one signal to the encoder unit;
A switching instruction unit for generating a switching signal to the switching unit;
In response to a user start instruction, the encoder unit is instructed to start encoding, and in response to a user end instruction, encoding instruction means to instruct the encoder unit to end encoding;
An information recording / reproducing apparatus comprising: In an information recording / reproducing apparatus capable of recording / reproducing on a recordable recording medium,
A decoder unit for decoding the recorded data;
An encoder that encodes the input signal;
An external signal input unit for receiving video and audio signals from the external input;
A switching unit that switches a signal from the external signal input unit and a signal from the decoder unit and supplies one signal to the encoder unit;
A switching instruction unit for generating a switching signal to the switching unit;
An encoding end timing detection unit for detecting that a predetermined time has elapsed since the transfer of the read reproduction data to the decoder unit was completed;
Encoding instruction means for instructing the encoder unit to end encoding in response to a signal from the detection unit;
An information recording / reproducing apparatus comprising: In an information recording / reproducing apparatus capable of recording / reproducing on a recordable recording medium,
A decoder unit for decoding the recorded data;
An encoder that encodes the input signal;
An external signal input unit for receiving video and audio signals from the external input;
A switching unit that switches a signal from the external signal input unit and a signal from the decoder unit and supplies one signal to the encoder unit;
A switching instruction unit for generating a switching signal to the switching unit;
An empty detection unit for detecting the empty of the internal buffer of the decoder unit;
Encoding instruction means for instructing the encoder unit to end encoding after a predetermined time has elapsed since the detection of the empty by the detection unit;
An information recording / reproducing apparatus comprising:   9. The decoder according to claim 1, wherein the decoder unit decodes data recorded in a VR-DVD format, and the encoder unit encodes an input signal into data in a DVD-ROM Video format. The information recording / reproducing apparatus according to the item.

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