JP2003109307A - Information recording and reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To construct a system capable of performing dubbing processing while performing format conversion from a VR-DVD to DVD-ROM video. SOLUTION: A dubbing switching part 308 switches a digital signal from a data decoding part 200 and a digital signal from an AD converting part 301 and provides one signal. A data encoder part 300 encodes digital data from the dubbing switching part 308. An MPU part 100 generates a signal that makes the dubbing switching part 308 switch digital data based on an external input signal and digital data obtained by decoding recorded data according to an instruction from a user.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a DVD recording / reproducing apparatus for recording / reproducing video and audio data.

[0002]

2. Description of the Related Art In recent years, a moving picture compatible optical disk reproducing apparatus for reproducing an optical disk in which data such as video and audio is recorded has been developed, and is generally used for the purpose of movie software, karaoke and the like such as LD and video CD. It is popular.

[0003] Among them, currently, the international standardized MPEG2 is used.
(Moving Image Coding Expe
The DVD standard using the AC3 audio compression method has been proposed.

According to the MPEG2 system layer, this standard supports MPEG2 as a moving picture compression method, AC3 audio and MPEG audio as voice, and further sub-picture data obtained by run-length compression of bitmap data for subtitles, fast-forward rewind, etc. Special playback control data (navi pack) is added.

Further, this standard supports ISO9660 and micro UDF so that the data can be read by a computer.

As the standard of the medium itself, DV is
DVD-RO which is the medium used for D-video
Following M, the DVD-RAM standard was completed, and DVD-R
AM drives are also becoming popular as computer peripherals.

Therefore, at present, VR-DVD (Video Recording D), which is a DVD video standard capable of real-time recording / reproduction using the DVD-RAM, is currently performed.
VD) standard has been completed, and DVD video is now on the market based on this standard.

In this case, among the requests that cannot be realized by the current VTR, there are some that can be realized by the change to the disk medium.

Here, the recorded VR-DVD data is converted into the DVD-ROM Video standard in order to reproduce it on a generally popular and inexpensive DVD-Player, and D
There is a demand for recording on VD-R and widespread enjoyment.

[0010]

PROBLEM TO BE SOLVED BY THE INVENTION Recorded VR-DV
When dubbing D data to the DVD-ROM Video standard, VR-DVD and DVD-ROM Video
Then, depending on the supported resolution, audio mode, etc.,
It had the drawback that it could not be converted easily.

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 cannot be stored in the DVD-R.

Therefore, an object of the present invention is to provide a recording / reproducing apparatus which can perform dubbing processing while converting the format from, for example, VR-DVD to DVD-ROM Video by using a simple structure.

[0013]

According to the present invention, the encoded video data is decoded once, and the digital data is encoded again as it is, thereby efficiently performing dubbing.

That is, according to the present invention, in an information recording / reproducing apparatus capable of recording / reproducing on / from a recordable recording medium, a decoder section for decoding recorded data, an encoder section for encoding an input signal, A video / audio signal from an external input, an external signal input section, a switching section that switches the signal from the external signal input section and the signal from the decoder section, and supplies one signal to the encoder section; and the switching section. And a switching instruction unit for generating a switching signal.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION In a DVD-video, data is stored in a normal file format. Furthermore, the title corresponds to, for example, one movie, and one disc includes a plurality of titles. A collection of these titles is called a title set, and this title set is composed of a plurality of files. Also, recording / playback D
In the VD, one moving image VOBS file exists on one disc, and the original PGC records the reproduction order used when reproducing in the recording order.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

As shown in FIG. 2, the DVD has a directory for each standard, and the recording / reproducing DVD has DVD_RTAV, D
For VD-audio, it is AUDIO_TS, and for DVD-video, it is VIDEO_TS. Each recorded data is
It exists in this directory.

Further, in DVD-video, one disc has a VMG as information for managing the disc.
There is a file called.

Further, the title set (hereinafter referred to as VTS) is composed of a VTSI management information file for managing this VTS, a video file composed of video data, and a VTSI backup file.

Further, in the recording / reproducing standard, the VMGI and the VTSI are combined into a VMG (VR_MANGR.I).
FO), and a video data file (VR_MOV
IE. VRO).

The video file is 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 composed of a plurality of video object units (hereinafter referred to as “video object units”). V
It is called OBU. ). Also, VOBU
Is composed of a pack of data of various types. 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.

Here, the pack is a minimum unit for performing data transfer processing. Furthermore, the minimum unit for logical processing is a cell, and the logical processing is performed for each cell. And
The order of reproducing data is defined by PGC (Program Chain), a plurality of PGs (Program) are registered in this PGC, and cells are registered in this PG.

Further, in this cell, the number of the VOB to be reproduced and the reproduction time in the VOB are registered,
The VOB is reproduced according to the reproduction information of this cell.

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.

Further, in the recording / reproducing DVD, a special PGC for reproducing in the recording order (VTR-like reproduction processing) is called an original PGC, and the information of this original PGC is O.
It is recorded in RG_PGCI. A PGC created by editing or the like is called a user-defined PGC, and the information of this user-defined PGC is UD_PG.
It is recorded in CI.

From the above, there is one ORG_PGC per disk, and there are a plurality of UD_PGCs.

The operation of this embodiment will be described below.

As shown in FIG. 1, the recording / reproducing apparatus according to the present embodiment has an MPU section 100, a decoder section 200, an encoder section 300, a display section 410, a TV tuner section 420, and an S section.
TC unit (System Time Clock) 430, D-PRO unit 4
40, temporary storage unit 450, drive unit 460, key input unit 470, V mixing unit 480, frame memory unit 4
90, including a TV D / A unit 500.

The encoder section 300 includes an A / D section 30.
1, video encoding unit 302, audio encoding unit 303, SP encoding unit 304, formatter unit 3
06, a buffer memory unit 307, and a decoder unit 200
From the A / D unit 301 and the switching unit 308 that switches the digital data from the A / D unit 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 2.
It is composed of 06.

Here, the switching unit 308 is the MPU unit 10.
A switching signal from 0 switches between digital data obtained by A / D external input and tuner signal and digital data from the decoder unit 200.

Further, as shown in FIG. 23, it is also conceivable that the signal is converted into an analog signal, then returned to the input and switched with the signal returned by the switching section. In this case, switching is performed with an analog signal, and the switch is an analog switch. In the switching process, digitally, there are 9 circuits for video (8 data, 1 clock) and 3-4 circuits for audio (bit clock,
LR clock, data, master clock) and many switching circuits are required, whereas switching processing by analog signals requires only one circuit for video and two circuits for left and right audio, which makes the circuit simple. Since / D and D / A are added, the image quality and sound quality are degraded.

The video signal flow of the apparatus shown in FIG. 1 is as follows.

First, the input AV signal is input to the A / D section 30.
Digitally converted by 1. 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 MP
Either digital data is switched by a switching signal from the U unit 100.

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, the character data such as teletext is input to the SP encoding unit 304, and the video signal is M
PEG compressed, audio signal is AC3 compressed or M
PEG audio compression is performed, and character data is run-length compressed.

Further, in each of the encoding units 302 to 304, one pack is 20 when compressed data is packed.
It is packetized into 48 bytes and 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.

At this time, for example, 1 GOP (Group o
Each f Picture) is set as a VOBU, the division information at that time is stored in the buffer memory unit 307, and when the division information is accumulated to some extent, it is transferred to the MPU unit 100.
The section 100 uses the information as a basis for TIME MAP Inf.
o. To create.

Here, as the segmentation information (VOBU segmentation information), the size of the VOBU, the reproduction time from the beginning of the VOBU to the end, the end address of the I picture from the beginning of the VOBU, and the like can be considered. Further, based on the above-mentioned division information, the formatter unit 306 directly outputs the Time Map I
It is also possible to create an nformation and pass it to the MPU unit 100 in the form of TMP.

In the D-PRO unit 440, an ECC block is formed for every 16 packs, error correction data is added, and the drive unit 460 records the data on the disc. Here, when the drive unit 460 is in a busy state due to seek or track jump, the drive unit 460 is put into the temporary storage unit 450 and waits until the drive unit 460 is ready.

On the recording / playback DVD, the number of video files is 1.
There is one file in DISK. Furthermore, M_AVFITI (Movie AV File) in VMG that manages video data
PGCI for controlling the reproduction order is recorded in the Information Table Information), and of these, the TMAPI in M_AVFITI is created by the division information,
ORG_PGCI is to set PGCI in the order of recording.
Is reflected in.

Here, PGCI is VM as shown in FIG.
Included in G. PGCI is PGC_GI (P
The number of PGs included in GC and the number of CELLs are included),
PGIT (Program type, number of cells in PG,
Primary text information, SRP to item text
Number, thumbnail pointer), CI_SRPT (CEL
L search pointer table) and CIT (CELL information table)).

Further, the CIT is composed of CI # 1 to #j,
CI is C_GI (CELL type, search pointer to VOBI: VOB number to be reproduced of CELL, CELL
Playback start time and end time) and C_EPI # 1 to #k
(EP type (with / without text information), EP playback time, text information).

As information for reproducing the VOB, M_
The VOBI is included in the VMG as shown in FIG. This M
_VOBI includes TMAPI, and this TMAPI includes TMAP_GI (number of TMU, number of VOBU_ENT, time offset, address offset: this VOB
File pointer from the beginning in the video file),
TM_ENT # 1 to #n (VOBU_EN every 10s
T number, time difference, VOBU address: this V
A file pointer from the beginning of the OBU video file) and VOBU_ENT # 1 to #m (relative address from the beginning of the VOBU to the last data of one picture, VOBU playback time, VOBU size).

Next, the recording process of the apparatus shown in FIG. 1 will be described with reference to the flowchart of FIG. In this process, the MPU unit 100 controls each unit as follows.

First, as in steps S1 and S2, MP
The U unit 100 reads the file system data, checks whether there is free space, and if there is no free space, displays that effect and ends. In step S2, if there is free space, pre-recording processing is performed to determine the write address.

In step S5, recording initialization is performed on the encoder section 300. At this time, the delimiter conditions of PG, CELL, and VOBU are transmitted to the formatter unit 306, and the formatter unit 306 automatically delimits. The formatter unit 306 is also set when the align process is performed.

In step S6, a recording start command is transmitted to the encoder section 300. As in steps S7 and S8, the first recording unit block corresponds to the buffer memory unit 30.
When the data is stored in 7, the write address, write length, and write command are issued to the drive unit 460.

At steps S9 and S10, it is checked whether or not the division information is accumulated. If the division information is accumulated, the formatter unit 306 reads the division information. The interrupt flow during recording is shown in FIG.
1 to S23.

In step S11, it is checked whether or not the data for one recording unit block has been stored in the buffer memory unit 307.
Move to 13. When the data for one recording unit block is accumulated, the recording process during recording is performed as in step S12, and the recording address, the recording length, and the recording command are issued to the drive unit 460.

In step S13, it is checked whether or not the recording end key is pressed, and if the stop key is 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 and it is determined whether or not there is a recordable capacity as in step S17. If the remaining capacity is sufficient, step S
Move to 9. Then, the recording end process is performed as in step S18.

The process at the start of recording will be described below with reference to the operation flow of FIG. In this process, the MPU unit 100 controls each unit as follows.

As in steps S31 to S33, the MPU
The unit 100 checks the file system, and if there is no file system, constructs the file system and the DVD_RTR directory, and proceeds to step S36. Step S34,
In S35, the directory is checked, and if there is no RTR directory, an RTR directory is created and the process proceeds to step S36. In step 36 and S37,
An error check is performed, and if an error occurs in the above process, the message "An error has occurred in the file system" is displayed and the process ends.

In steps S38 to S40, VMG is set to DI.
It is checked whether it is in the SK. If it is not, the VMG table is constructed in the work RAM 101. If it is, the VMG table is read from the DISK and the MP is read.
It is expanded in the work RAM 101 of the U unit 100. Furthermore,
Encoding attribute information (S
TI) selection or setting processing is performed. What is STI information?
Attribute information at the time of encoding, which is the video resolution, N
It includes TSC / PAL selection, aspect ratio, number of audio streams, number of SP streams, audio stream coding method, sampling frequency, number of channels, audio bit rate, and the like.
However, this STI information can be set in two ways: one before recording and one after recording.

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, and if there is the same information, the STI number is used as the work RAM.
STI for VOB at the time of recording
If there is no same number, STI information is constructed from the attribute information to be recorded, and ST in VMG
I added to I information and added this STI number to work R
It is saved in AM101 and S for VOB at the time of recording
Use the TI number.

VMG in the initial state constructed in this way
May be saved as a file in an area specified by the file system on the disk. Here, even if the VMG is not saved, the VMG having the updated content in which the recorded content is reflected may be saved at the end of the recording.

In steps S41 and S42, an error check is performed, and if an error occurs, a message "management data could not be created" is displayed and this process ends.

Next, regarding the operation of the processing at the end of recording,
This will be described with reference to the operation flowchart of FIG. In this process, the MPU unit 100 controls each unit as follows.

In step S51, the MPU unit 100 updates the VMG in the work on the basis of the division information received from the formatter unit 306, and determines the order of reproduction.
Create I. Next, as in steps S52 to S54,
The VOBS file (see FIG. 2) is stored in the directory record information under the RTR_DVD directory in the file system.
VRO file) exists, and if there is, the information of the VRO file is updated (to the information of the recorded video file), and if not, the directory record information of the VRO file is stored in that directory ( Add to the information of the recorded video file).

In steps S55 to S57, RTR_D
It is checked whether or not there is an IFO file (RTR VMG file in FIG. 2) in the directory record information under the VD directory.
Record the VMG constructed in the free space, RTR_DV
IF the directory record information under the D directory
O file information is added, and 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 is updated. At this time, if the STI registration work has not been performed before recording, the recorded video attributes and audio attributes are set to ST.
Register as I.

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.

As in steps S61 and S62, the MPU unit 100 disc-checks whether the disc is a rewritable disc (R, RW, RAM). If the disc is not a rewritable disc, the fact is returned and the process ends. Steps S63 and S6
In step 4, the file system of the disk is read, and it is checked whether or not there is a volume structure. If there is no volume structure, "not recorded" is displayed and processing ends.

In step S65, it is checked whether or not there is a DVD_RTR directory.
“Not recorded” is displayed and the process ends. In step S66, it is checked whether an error has occurred. If an error has occurred, "File system error has occurred" is displayed and the process ends.

In step S68, it is determined whether or not there is a VMG, and if there is no VMG, "no recording" is displayed and the process ends. As in steps S69 and S70, if there is a VMG, the VMG is read and it is checked whether or not there is a VRO file. If there is no VMG, "no recording" is displayed and the process ends.

In step S72, the VMG file is read, the program and cell to be reproduced are determined (selected by the user), and the file pointer (logical address) for starting reproduction is determined. Here, when the reproduction in the recording order is selected, the reproduction is performed according to ORG_PGCI, and when the reproduction is performed for each program, the reproduction is performed according to UD_PGC having a number corresponding to the program to be reproduced.

At step 73, each decoder is initialized. Further, as in steps S74 to S79, cell reproduction processing (after) is performed, and whether or not reproduction is completed is checked. If the reproduction is completed, an error check is performed, and in the case of an error, a message to that effect is displayed. If it is not an error, reproduction end processing is performed and this operation is ended.

If the reproduction is not completed in step S75, the next cell is determined from PGCI as in steps S80 to S84, and it is checked whether the setting (resolution etc.) of the decoder has been changed. In this case, the changed attribute is set in the decoder so that the setting of the decoder is changed at the next sequence end code (at the end of VOB).

In steps S83 and S84, it is checked whether or not 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 is not performed according to STC, but according to the video synchronization signal). Decode & display mode), set the seamless connection flag,
Control goes to step S74.

Next, the cell reproducing process will be described with reference to FIG. In this process, the MPU unit 100 controls each unit as follows.

First, as in step S91, the MPU unit 10
0 determines the cell start file pointer (logical block address) and end address file pointer (logical block address) by PGCI and TMAPI, substitutes the cell start FP as the read FP, and the final file pointer for the remaining cell length. Set the value obtained by subtracting the start file pointer from. Further, the reading process during reproduction is executed, and the reading address and the reading size are determined from the start file pointer.

In steps 92 to S94, the read unit size to be read is compared with the remaining cell length. If the remaining cell length is large, the remaining cell length is set to a value obtained by subtracting the read unit size to be read from the remaining cell length, and the read is performed. Set the length to the length of the reading unit. If it is smaller, the read length is set to the remaining cell length, and the remaining cell length is set to 0.

At step 95, the read address, read length, and read command are transmitted to the drive section 460. In step 96, it is checked whether the transfer has started. In steps S97 and S98, the read FP is
The sum of the read FP and the read length set in step S95 is substituted, and it is checked whether or not seamless connection is in progress. When the seamless connection is being made, the decoder is shifted to the normal mode and the SCR is read.

In step S99, it is checked whether or not the transfer is completed. If it is completed, step S10 is executed.
The remaining cell length is checked as in 6, and if it is not "00", the process proceeds to step S93, and if it is "00", this process ends.

If the transfer is not completed in step S99, the key input is checked as in steps S100 to 105, and in the case of special reproduction, the direction is set, and the reading is performed using TMAPI. The FP is calculated, the reading process at the time of special reproduction is performed, and this process is ended. If not, the process proceeds to step S99.

The target FP of special reproduction is obtained from TMAPI so as to skip a fixed time. Also at this time,
A method of jumping a fixed number of VOBUs instead of a fixed time to obtain FP is also conceivable. At this time, when the end of the cell is reached, the next cell information is read by PGCI, the TMAPI is selected from the VOB number used by the cell (1 TMAPI exists in 1 VOB), and the read FP is similarly read. Ask. Also, if there are no cells,
Therefore, it ends.

Next, an embodiment of the dubbing process according to the present invention will be described.

Here, DVD data in the VR-DVD format is recorded in the HDD (hard disk drive) of the temporary storage unit 450, the DVD data is decoded, and further converted into the DVD-ROM Video format to be the DVD-R. The case of recording will be described. But,
The recording medium and data format of the dubbing source and the recording medium and data format of the dubbing destination are not limited to the present embodiment.

FIG. 12 shows a display example of the display unit 410 during dubbing, and FIG. 13 is a flow chart showing the dubbing processing operation.

When the user specifies the dubbing process,
The MPU unit 100 executes the following processing.

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 is asked to input a rate for recording. If it is predetermined, it is not necessary.

In step S113, the fact that dubbing has started is displayed. Here, as shown in FIG. 12, two methods can be considered: 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, the reproduction process and the recording process are performed in parallel.

On the reproducing side, it is set so that a blue screen is displayed when not being reproduced by the decoder section 200 as in step S115. The following is the same as the normal reproduction process.

On the recording side, a dubbing recording start process is performed as described in step S116 (described later). Step S117
Is similar to the recording process of FIG. However, the MPU unit 10
In the case of 0, format conversion is performed by switching parameters such as resolution. In step S118, dubbing recording end processing is performed (described later).

After reproduction and recording are completed, steps S119 and S
The management data is created as in 120, and the switching unit 308
Is set to switch to the external input or tuner input signal, and this processing ends.

Here, as the dubbing recording start processing, it is necessary to detect when the decoder section 200 has started reproduction and then start recording.

For this, four methods can be considered as shown in FIGS.

First, as shown in FIG. 14, a method of outputting a blue background from the decoder section 200 to detect the end of the blue background and start recording (S13).
1). In this case, since the encoder unit 300 has the frame memory 302F for encoding, the previous image and the next image may be compared to determine whether or not the image is a blue background (S131).

Second, the decoder unit 200 as shown in FIG.
The MPU unit 100 monitors and detects the timing (decoding start) when the STC 430 therein is reset, and outputs an encoding start command to the encoder unit 300 at that timing (S132).

Thirdly, as shown in FIG. 16, the MPU unit 100 issues a decode start command, and the reproduced data becomes the D-PRO unit 4.
After confirming that the transfer is started from 40 to the separation unit 201, an encoding start command is output to the encoder unit 300 after a predetermined time has passed (S133).

Fourthly, as shown in FIG. 17, when the user sees on the TV screen and presses the recording key at the user's liking, an encoding start command is output to the encoder section 300 at that timing (S134).

Further, as the dubbing recording end processing, it is necessary to detect when the decoder section 200 has completed the reproduction, and then end the recording.

There are four possible methods for this, as shown in FIGS.

First, after decoding as shown in FIG.
This is a method in which the MPU unit 100 is set to output the blue back from the decoder unit 200, the output of the blue back is detected, and the recording is ended (S141). This is because the encoder unit 300 has the frame memory 302F for encoding as in the recording start process, so that it is only necessary to compare the previous image and the next image to determine whether or not the image is a blue background.

Second, the decoder unit 200 as shown in FIG.
The MPU unit 100 monitors the status register 207 in the decoder unit to detect that the internal buffer memory 206 has become less than a certain amount, and further confirms that it is close to the reproduction end time of the title being decoded. Then, after a lapse of a certain time, an encoding end command is output to the encoder unit 300 (S142). Here, the reproduction time can be obtained from the CIT of PGCI of FIG. 4 and the TMAPI of VOBI of FIG.

Thirdly, as shown in FIG. 20, after the MPU unit 100 confirms that the last reproduction data has been transferred based on PGCI, after a lapse of a certain time, an encoding end command is output to the encoder unit 300 (S143). ).

Fourthly, when the user sees on the TV screen and presses the STOP key at the user's liking, an encoding end command is output to the encoder section 300 (S14).
4).

Finally, after the recording is finished, a process of creating management data is performed. At this time, as shown in FIG. 22, the reproduction data management information (PGCI in FIG. 4) and the encoder unit 30 during recording are recorded.
The management information is modified with the value set to 0 so as to match the recording format and recorded on the disc.

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]

As described above, according to one embodiment of the present invention, a VR-DVD to a DV can be used with a simple structure.
It is possible to construct a system that can perform dubbing processing while converting the format to D-ROM Video.

[Brief description of drawings]

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

FIG. 2 is a diagram showing an example of a directory structure of a DVD.

FIG. 3 is a video object set (VOB).
Structural drawing of S).

FIG. 4 is a diagram showing the contents of C_PBI.

FIG. 5 is a diagram 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 reproducing operation according to the present invention.

FIG. 11 is a flowchart showing a cell reproducing operation according to the present invention.

FIG. 12 is a diagram showing an example of a screen display 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 the 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 / reproducing apparatus according to another embodiment of the present invention.

[Explanation of symbols]

100 ... MPU section, 200 ... Decoder section, 300 ... Encoder section, 410 ... Display section, 420 ... TV tuner section, 430 ... STC section, 440 ... D-PRO section, 450
... temporary storage section, 460 ... drive section, 470 ... key input section, 480 ... V mixing section, 490 ... frame memory section, 500 ... TV D / A section

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 5C052 AA02 AB04                 5C053 FA15 FA24 GB37 LA06                 5D044 AB05 AB07 BC04 CC04 DE04                       DE42 DE49 GK08

Claims (11)

[Claims] 1. An information recording / reproducing apparatus capable of recording / reproducing on / from a recordable recording medium, a decoder section for decoding recorded data, an encoder section for encoding an input signal, and an external input. To an external signal input section for receiving the video and audio signals, a switching section for switching between the signal from the external signal input section and the signal from the decoder section, and supplying one signal to the encoder section, and the switching section. An information recording / reproducing apparatus, comprising: a switching instruction unit that generates a switching signal. 2. An A / D conversion unit as the external signal input unit, and the switching unit comprises means for performing switching processing on digital data.
Information recording / reproducing apparatus described. 3. The information recording / reproducing apparatus according to claim 1, wherein the output from the decoder section is an analog signal, and the switching section includes means for performing switching processing on the analog signal. 4. When the decoder unit performs the decoding process while the decoded unit performs the encoding process on the decoded data, the data management information before the decoding process and the parameters during the encoding process are used. The information recording / reproducing apparatus according to claim 1, further comprising a management information updating unit that creates new management information. 5. A display unit for displaying the decoding process and the fact that the encoding process is being performed when the decoding unit performs the decoding process and the encoder unit encodes the decoded data. The information recording / reproducing apparatus according to claim 1, wherein 6. 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, and the encoding is started from the video next to the video of the set color. The information recording / reproducing apparatus according to claim 1, further comprising an encoding period setting unit that sets the encoder unit so as to encode up to the color image. 7. An STC reset detection unit for detecting STC reset of the decoder unit, and an encoding instruction means for instructing the encoder unit to start encoding processing in response to a detection signal from the detection unit. The information recording / reproducing apparatus according to claim 1, wherein 8. An encoding start timing detection unit for detecting that a predetermined time has elapsed after transferring the read reproduction data to the decoder unit and issuing a decode command, and in response to a signal from the detection unit, The information recording / reproducing apparatus according to claim 1, further comprising an encoding instruction unit for instructing the encoder unit to start encoding. 9. An encoding instruction means for instructing the encoder section to start encoding in response to a user's start instruction, and for instructing the encoder section to end encoding in response to a user's end instruction. The information recording / reproducing apparatus according to claim 1, wherein: 10. An encoding end timing detection unit for detecting a lapse of a certain time after the transfer of the read reproduction data to the decoder unit is completed, and an end of encoding in response to a signal from the detection unit. The information recording / reproducing apparatus according to claim 1, further comprising an encoding instruction means for instructing the encoder section. 11. An empty detection section for detecting empty of an internal buffer of the decoder section, and an encoding instruction means for instructing the encoder section to end encoding after a predetermined time has elapsed since the empty section was detected by the detection section. The information recording / reproducing apparatus according to claim 1, further comprising: