CN1241777A - Recording/playback apparatus, recording/playback method, presentation medium and recording medium - Google Patents

Abstract

With append only flag reset to 0, data is recorded over existing data on a disc in accordance with the value of volume write protect level. With append only flag set to 1, on the other hand, data can not be recorded over existing data on the disc but can be appended to already recorded data in a range defined by the value of volume write protect level. As a result, it is possible to prevent new data from being written over already recorded data by mistake and to utilize the recording area of the disc efficiently.

Description

Record/playback device, recording/reproducing method, display media and recording medium

The present invention relates to record/playback device, recording/reproducing method, display media, recording medium; Especially about taking to distinguish record/playback device, recording/reproducing method, display media, the recording medium that rewriting is write down and addition record comes record data.

Can wipe in the data that recording medium has write down on such as CD or disk, be recorded on the same area that is wiped free of data equally to allow new data.In other words, practicable rewriting record.In the method, unwanted data can be wiped free of, and can only write down the data that need, so that effectively utilize the permission posting field of recording medium.

Whether in addition, wipe record data for fear of mistake, usually, each has the indenture that typically is provided with in its surface in these dishes, and be used to select can carry out new data records to the operation of coiling.More particularly, take indenture is transformed into the impossible position of recording operation, can prevent the operation of on the data that write down on the dish, writing down other data again.

As mentioned above, take indenture is transformed into the impossible position of recording operation, can prevent the operation of on the data that write down on the dish, writing down other data again.Yet, in case indenture be switched to recording operation can not the position, even still keep on the dish no record zone can not be again data recording to dish, the problem that is produced is to effectively utilize the posting field of dish.

At the problems referred to above the present invention seeks to avoid mistake executive logging operation, and effectively utilize the dish posting field.

According to the recording unit of claim 1, it is characterized in that equipment comprises:

Addition record is specified (append-recording specifying) device, specifies the recording operation that whether allows data are appended to recording medium;

Catalogue is judged (specification judging) device, forms judgement on the catalogue that is shown by the addition record specified device; And

Control device, according to the judged result that is formed by the catalogue judgment means, control is the operation of data recording on the recording medium.

According to the recording method of claim 4, it is characterized in that may further comprise the steps:

Whether the addition record given step specifies to allow data are appended to recording operation on the recording medium;

The catalogue determining step forms on the catalogue of representing in the addition record given step and judges;

Controlled step, according to the judged result that forms in the catalogue determining step, control is the operation of data recording on the recording medium.

According to the display media of claim 5, it is characterized in that medium are used to show the program of being carried out by the recording unit of implementing to handle, treatment step is as follows:

Whether the addition record given step specifies to allow data are appended to recording operation on the recording medium;

The catalogue determining step forms on the catalogue of representing in the addition record given step and judges;

Controlled step, according to the judged result that forms in the catalogue determining step, control is the operation of data recording on the recording medium.

According to the recording medium of claim 6, it is characterized in that medium comprise the bookkeeping information of record, this information indicates whether to allow data are appended to recording operation on the recording medium.

With according to the recording unit of claim 1, according to the recording method of claim 4 with according to the display media of claim 5, form the judgement that equally whether to allow the addition record operation and according to judged result control the operation of data recording on the recording medium.

On recording medium according to claim 6, write down relevant expression whether allow addition record operation information.

Fig. 1 is expression bibliographic structure figure;

Fig. 2 is the key diagram that shows VOLUME.TOC;

Fig. 3 is the key diagram that shows volume_information ();

Fig. 4 shows volume_attribute () key diagram;

Fig. 5 is the key diagram that shows resume ();

Fig. 6 is the key diagram that shows volume_rating ();

Fig. 7 is the key diagram that shows write_protect ();

Fig. 8 is the key diagram that shows play_protect ();

Fig. 9 is the key diagram that shows recording_timer ();

Figure 10 is the key diagram that shows text_block ();

Figure 11 is the key diagram that shows language_set ();

Figure 12 is the key diagram that shows text_item ();

Figure 13 is the key diagram that shows ALBUM.STR;

Figure 14 is the key diagram that shows album ();

Figure 15 is the key diagram that shows TITLE_###.VDR;

Figure 16 is the key diagram that shows title_info ();

Figure 17 is the key diagram that shows PROGRAM_$$$PGI;

Figure 18 is the key diagram that shows program ();

Figure 19 is the key diagram that shows play_list ();

Figure 20 is the key diagram that shows play_item ();

Figure 21 is the key diagram that shows CHUNKGROUP@@@.CGIT;

Figure 22 is the key diagram that shows chunk_connection_info ();

Figure 23 is the key diagram that shows chunk_arrangement_info ();

Figure 24 is the key diagram that shows CHUNK%%%%.ABST;

Figure 25 shows the block scheme of implementing compact disk equipment typical structure of the present invention;

Figure 26 is the key diagram of Display directory structure;

Figure 27 is the key diagram of Display directory logical organization;

Figure 28 is the key diagram that shows compensation;

Figure 29 is the key diagram of Display directory structure;

Figure 30 is the key diagram of Display directory structure;

Figure 31 is the key diagram of Display directory logical organization;

Figure 32 is the key diagram of Display directory structure;

Figure 33 is the key diagram of Display directory structure;

Figure 34 is the key diagram of Display directory logical organization;

Figure 35 is the key diagram of Display directory logical organization;

Figure 36 is the key diagram that shows volume_write_protect_level;

Figure 37 is the key diagram that shows append_only_flag;

Figure 38 shows the process flow diagram that expression conversion write_protect handles;

Figure 39 shows the process flow diagram of representing recording processing;

Figure 40 shows the process flow diagram of representing recording processing;

Figure 41 shows the process flow diagram of representing recording processing;

Figure 42 shows the key diagram that concerns in the middle of the write-protect level (levels) of volume (volume).

Before case illustrated itself, for the relation between the device of describing in the opinion that is set forth in example of the present invention and detailed description, the typical case of each device that employing will be drawn together with bracket carries out and appends to following apparatus and describe feature of the present invention.But much less, in the following description for the device the additional exemplary executive routine and do not mean that the executive routine of handle assembly is restricted to typical executive routine.

According to the recording unit of claim 1, it is characterized in that equipment comprises:

Addition record specified device (adopting the append_only_flag shown in Fig. 7 typical case to carry out) is specified the recording operation that whether allows the recording medium additional data;

Catalogue judgment means (adopting the step S22 in the process flow diagram shown in Figure 39 typical case to carry out) forms judgement on the catalogue by the indication of addition record specified device; And

Control device (adopting the step S24 to S28 in the process flow diagram shown in Figure 39 typical case and the S43 and the S45 of process flow diagram shown in Figure 40 to carry out) is controlled the operation of data recording on the recording medium according to the judged result that is formed by the catalogue judgment means.

According to claim 2, it provides a kind of as the recording unit in the claim 1, it is characterized in that also having:

Record prevention/permission specified device (adopting the volume_write_protect_level shown in Fig. 7 typical case to carry out), specify for each data type and to stop or allow the operation of data recording on the recording medium, and, in the scope by the appointment of record prevention/permission specified device, the addition record specified device is specified and is stoped or the operation of permission addition record.

Narration starts from the explanation with file arrangements on the recording medium of the present invention of record and sense information.As shown in Figure 1, on recording medium the record below 7 kinds of files.

VOLUME.TOC

ALBUM.STR

PROGRAM_$$$.PGI

TITLE_###.VDR

CHUNKGROUP_@@@.CGIT

CHUNK_％％％％.ABST

CHUNK_％％％％.MPEG2

VOLUMETOC and ALBUM.STR are set in root directory.The PROGRAM$$$.PGI of $$$ representation program number is set in the catalogue of root directory below called after PROGRAM.Equally, ### represents that the TITLE_###.VDR of title number is set in the catalogue of root directory below called after TITLE.， @@@ represents that the CHUNKGROUP_@@@.CGIT of piece group (chunkgroup) number is set in the catalogue of root directory below called after CHUNKGROUP in addition.Equally, %%%%. represents that the CHUNK%%%%.ABST of piece number is set in the catalogue of root directory below called after CHUNK.

Under root directory, set up one or more sub-directories under the catalogue of called after MPEGAV.%%%% represents that the CHUNK_%%%%.MPEG2 of piece number is set in the sub-directory.

Usually, only existing 1 VOLUME.TOC file in recording medium.But in having the recording medium of special construction like an elephant ROM or RAM mixed structure, can existing a plurality of VOLUME.TOC files.This document is used for the characteristic of displayed record medium integrally.

Fig. 2 shows the VOLUME.TOC structure.As shown in the figure, in the beginning (head) of structure, file_type_id being set, is VOLUME.TOC with the indication file.The back of file_type_id is volume_information (), follows back at volume_information () at the end of structure text_block ().

Fig. 3 shows volume_information () structure.As shown in the figure, volume_information () comprises volume_attribute (), resume (), volume_rating (), write_protect (), play_protect () and recording_timer ().

The volume_attribute () that Fig. 3 shows is the zone that is used to write down the logical volume attribute.Fig. 4 shows the detailed structure of volume_attribute ().As shown in the figure, volume_attribute () comprises title_playback_mode_plag and program_playback_mode_flag.

The resume () that Fig. 3 shows is the zone that is used for recorded information, and described information is used for when inserting recording medium more just in time returning to form before ejecting recording medium.Fig. 5 shows the detailed structure of resume ().

The volume_rating () that Fig. 3 shows is the zone that is used for recorded information, carries out the supervision of whole volumes/limit through (age) when listening to through (age) and monitor/listener classification when described information is used for by monitor/listener.Fig. 6 shows the detailed structure of volume_rating ().

The write_protect () that Fig. 3 shows is the zone that is used for recorded information, and this information is used to change and delete the restriction operation of interior title that writes down of volume and program.Fig. 7 shows the detailed structure of write_protect ().

The play_protect () that Fig. 3 shows is the zone that is used for recorded information, and this information is used to indicate whether title and the program that can reset and write down in volume, or is used for the information of restricted playback operand.Fig. 8 shows the detailed structure of play_protect ().

The recording_timer () that Fig. 3 shows is the zone that is used for recorded information, and this information is used for the controlling recording time.Fig. 9 shows the detailed structure of recording_timer ().

The detailed structure of the text_block () of the VOLUME.TOC that Fig. 2 shows is illustrated among Figure 10.As shown in figure 10, text_block () comprises language_set () and text_item (), and its detailed structure is illustrated in respectively among Figure 11 and Figure 12.

Usually, only existing 1 ALBUM.STR file shown in Figure 1 in recording medium.But, in having the recording medium that special construction for example resembles ROM or RAM mixed structure, can existing a plurality of ALBUM.STR files.This file is used to a plurality of recording mediums are combined into the structure that is presented as single recording medium structure.

Figure 13 shows the structure of ALBUM.STR.As shown in the figure, in the beginning of structure, file_type_id being set, is ALBUM.STR with the indication file.The file_type_id back is album (), last in structure, and text_block () is in the back of album ().

Album () is the zone that is used for recorded information, and this information is used to manage multireel or a recording medium.Figure 14 shows the detailed structure of album ().

Existing in recording medium with the as many TITLE_###.VDR number of files as shown in Figure 1 of title.Title is at 1 first song or the program under the television broadcasting situation under the mini disk situation.The structure of in Figure 15, showing TITLE_###.VDR.As shown in FIG., in the beginning of structure, it is TITLE_###.VDR with the indication file that file_type_id is set.The back of file_type_id is title_info (), last in structure, and text_block () is in the back of title_info ().Sign ### is a string character that shows title number.

Title_info () is the zone that is used for record start point, terminal point and piecemeal group heading attribute.Figure 16 shows the detailed structure of title_info ().

With the as many PROGRAM_$$$.PGI number of files as shown in Figure 1 of program, existing in recording medium.Program comprises a plurality of grooves, and each specifies the zone of a part of title or the zone of all titles.Make groove restart effect with specified order.Figure 17 shows the structure of PROGRAM_$$$.PGI.As shown in the figure, the beginning in structure is provided with file_type_id, is PROGRAM_$$$.PGI with the indication file.The back of file_type_id is program (), last in structure, and text_block () is in the back of program ().Sign $$$ is a string character of representation program number.

Program () is such zone, is used to need not carry out on material irreversible processing, and record is for utilizing the required information of replay operations that title needs part to obtain of collecting.Figure 18 shows the detailed structure of program ().

The program () that shows at Figure 18 has 1 play_list ().Figure 19 shows the details of play_list ().

As shown in figure 19, play_list () comprises a plurality of play_item ().Figure 20 shows the details of play_item ().

Existing in recording medium with the as many CHUNKGROUP_@@@.CGIT number of files as shown in Figure 1 of piece group.The piece group is the data structure that is used to arrange bit stream.As long as the user usually operates the equipment that is used for by recording medium such as VDR (optic disk register) record and playback information, then the user does not note the existence of this document.

Figure 21 shows the structure of CHUNKGROUP_@@@.CGIT file.As shown in the figure, in the beginning of structure, file_type_id being set, is CHUNKGROUP_@@@.CGIT with indication this document.The back of file_type_id is chunkgroup_time_base_flags, chunkgroup_time_base_offset and chunk_connection_info (), last in structure, test_block () follows at chunk_connection_info () afterwards.

Chunkgroup_time_base_flags relates to the sign of piece group reference counter, and, chunkgroup_time_base_offset indication in the piece group reference time axle start time.Chunkgroup_time_base_flags has that to be set at the frequency be upwards 32 place values in the counter of counting of 90khz.Chunk_connection_info () is the zone that is used for as the recorded information on video conversion point or video and the audio sync particular point.Figure 22 shows the detailed structure of chunk_connection_info ().Chunk_connection_info () comprises the loop number of chunk_arrangement_info (), with the piece that is suitable for the piece group as many.Figure 23 shows the details of chunk_arrangement_info ().Existing in recording medium with the as many CHUNK_%%%%.ABST number of files shown in Figure 1 of piece.Piece is the message file corresponding to stream file.Figure 24 shows the structure of CHUNK_%%%%ABST file.As shown in the figure, in the beginning of structure, setting file_type_id, is CHUNK_%%%%ABST with the indication file.

The CHUNK_%%%%.MPEG2 file that Fig. 1 shows is a stream file.The CHUNK_%%%%.MPEG2 file is different from alternative document, is when alternative document only is used as canned data, and the CHUNK_%%%%.MPEG2 file is used as store M PEG bit stream.

Figure 25 shows the typical structure of compact disk equipment, and it is used to write down and the information on the CD of being used as the recording medium that comprises described file of resetting.In compact disk equipment, provide single optical head 2 rewritable optical discs 1.Shaven head 2 is used as the information of record and playback CD 1.

Before being subjected to, carry out demodulation by shaven head 2 bit streams of reading from CD 1 by 3 pairs of demodulation/modulation circuit by ECC circuit 4 error correction.Then, bit stream is supplied to read channel buffer 6, and described impact damper 6 is used for absorbing difference between reading speed and the decoding processing speed by switch 5.Bit stream by 6 outputs of read channel buffer is supplied with code translator 7.The structure of read channel buffer 6 is designed to and can be read by system controller 13.

Decipher with 7 pairs of bit streams of code translator, to produce video and audio signal by 6 outputs of read channel buffer.The vision signal that is produced by code translator 7 is supplied to combiner circuit 8, and before supplying with the display not shown in the figures that shows by output terminal P1 thereon, described vision signal is with synthetic by the vision signal of OSD (on fluorescent screen) control circuit 9 outputs.On the other hand, the sound signal that is produced by code translator 7 is transferred to the loudspeaker that does not also show among the figure by output terminal P2.

At this moment, be used to absorb writing before the channel buffer 11 of difference between encoding process speed and the writing speed, by 10 pairs of scramblers vision signal by input end P3 input and the coding audio signal by input end P4 input in supply.As read channel buffer 6, the structure that writes channel buffer 11 is designed to can be read out by system controller 13.

Be stored in the data that write in the channel buffer 11 and read from writing channel buffer 11, and, supply with ECC circuit 4 by switch 5, so that before by RF and demodulation/modulation circuit 3 modulation, be subjected to error correction.The RF signal of being exported by RF and demodulation/modulation circuit 3 as modulation result is written into CD 1 through shaven head 2.

12 pairs of address detection circuits write down or the CD 1 of replay operations on the optical track address information detect.The operation of compact disk equipment part is formed in system controller 13 controls.System controller 13 comprises that the CPU21 that carries out dissimilar controls, canned data are recorded by CD 1 as ram cell 23, the storage of the data that result from handling procedure as the ROM cell 22 of the handling procedure carried out by CPU21, temporary information or the ram cell 24 of the multiple message file reset.Based on the result who detects by address detection circuit 12, the position of CPU21 fine tuning shaven head 2.In addition, the also operation of control transformation switch 5 of CPU21.The input block 14 that comprises various switches and button is by user's operation, with the input various command.

The basic operation of sense information file then, is described.For example, in order to read the VOLUME.TOC message file, at first, the CPU21 that is used for system controller 13 uses the file system operation instruction that comprises at handling procedure in advance, determines physical address and the length thereof of VOLUME.TOC on the CD 1.Then, CPU21 moves the read-out position that shaven head 2 arrives based on the address information of VOLUME.TOC.Secondly, CPU21 makes shaven head 2, RF and demodulation/modulation circuit 3 and ECC circuit 4 be in the state of reading, and at the same time, makes switch 5 be transformed into the position that is connected with read channel buffer 6.And after the position of fine tuning shaven head 2, CPU21 begins to do read operation with shaven head 2.In the method, adopt shaven head 2 to read the VOLUME.TOC content, adopt RF and demodulation/modulation circuit 3 to carry out demodulation.As the signal of demodulation result, before storing read channel buffer 6 into, also be subjected to error correction according to ECC circuit 4 by switch 5 by the output of RF and demodulation/modulation circuit.

At this moment, be stored in the size that data total amount in the read channel buffer 6 is equal to or higher than VOLUME.TOC, CPU21 suspends read operation.Then, CPU21 is from read channel buffer 6 sense datas, and, data storage in ram cell 24.

Then, illustrate the basic operation in the data writing information file by the operation that data is write in the VOLUME.TOC message file.At first, CPU21 uses the file system operation instruction that is included in the handling procedure in advance, inspection is used for the file system (being CD 1) that size is equal to or greater than the clear area of VOLUME.TOC, and this zone is written into the VOLUME.TOC data, and determines this regional address.

Then, CPU21 is stored in new VOLUME.TOC in the ram cell 24 and transfers to and write channel buffer 11 being written into CD 1.Secondly, CPU21 moves shaven head 2 to the writing position according to the address information of clear area on CD 1.Then, CPU21 makes shaven head 2, RF and demodulation/modulation circuit 3 and ECC circuit 4 be in write state, simultaneously, switch 5 is transformed into the position that connection writes channel buffer 6.Outside the ratio, after fine tuning shaven head 2 positions, CPU21 utilizes shaven head 2 beginning write operations.

In the method, the content that VOLUME.TOC is provided again is from writing channel buffer 11 and read and imposing on ECC circuit 4 by switch 5.In ECC circuit 4, bug patch code is added in this content, and this content is provided for RF and demodulation/modulation circuit 3 then with modulated.Signal by RF and demodulation/modulation circuit 3 outputs is recorded on the CD 1 with shaven head 2 as modulation result.At this moment, read and record the size that data total amount on the CD 1 equals VOLUME.TOC from writing channel buffer 11, CPU suspends write operation.

At last, CPU21 uses the file system operation instruction that is included in the handling procedure in advance, revises the pointer that points to the VOLUME.TOC in file system (promptly on CD 1), to point to the position of new storage VOLUME.TOC in file system.

Below, illustrate basic stream replay operations by playback in the operation of the stream that is called CHUNK_0001.MPEG2 of Fig. 1 displaying.At first, CPU21 uses the file system operation instruction that is included in the handling procedure in advance, determines physical address and the length thereof of the CHUNK_0001.MPEG2 on CD 1.Then, CPU21 is shaven head 2 read-out positions that move to based on the address information of CHUNK_0001.MPEG2.Secondly, CPU21 makes shaven head 2, RF and demodulation/modulation circuit 3 and ECC circuit 4 be in the state of reading, and simultaneously, switch 5 is transformed into the position that connects read channel buffer 6.In addition, after the position of fine tuning shaven head 2, CPU21 utilizes shaven head 2 beginning read operations.

In the method, by shaven head 2 contents of reading CHUNK_0001.MPEG2, by RF and demodulation/modulation circuit 3 demodulation.As demodulation result, before being stored in read channel buffer 6, also be subjected to error correction by the signal of RF and demodulation/modulation circuit 3 outputs by ECC circuit 4 by switch 5.The data that are stored in the read channel buffer 6 are provided for code translator 7, to accept to produce the decoding processing of video and audio signal.The sound signal that is produced by code translator is transferred to loudspeaker by output terminal P2.On the other hand, the vision signal that is produced by code translator 7 offers combiner circuit 8, is synthesized before supplying with the display demonstration by output terminal P1.

At this moment, from CD be read out, by code translator 7 decoding and on display the data presented total amount equal the size of CHUNK_0001.MPEG2, or enter the instruction that suspends read operation by input block 14, CPU21 suspends and reads and decoded operation.

Below, illustrate the basic operation of recorded stream by the operation that data is write the CHUNK_0001.MPEG2 message file.At first, CPU21 uses the file system operation instruction that is included in advance in the handling procedure, inspection is used to be equal to or greater than the file system (being CD 1) of the clear area of CHUNK_0001.MPEG2, and the stream of CHUNK_0001.MPEG2 is to be written into the clear area, and determines this regional address.

Then, be written into write channel buffer 11 before, make from the vision signal of input end P3 input with from the audio-frequency signal coding of input end P4 input with scrambler 10.Secondly, CPU21 moves shaven head 2 to the writing position based on the address information of clear area on the CD 1.So CPU21 makes shaven head 2, RF and demodulation/modulation circuit 3 and ECC circuit 4 be in write state, at the same time, switch 5 is transformed into the position that connection writes channel buffer 11.Moreover after the position of fine tuning shaven head 2, CPU21 begins write operations with shaven head 2.In the method, the content of the CHUNK_0001.MPEG2 that provides is again read from writing channel buffer 11, and supplies with ECC circuit 4 by switch 5.In ECC circuit 4, bug patch code is added in such content, described content after offer RF and demodulation/modulation circuit 3 is modulated.Signal by RF and demodulation/modulation circuit 3 outputs is recorded in the CD 1 with shaven head 2 as modulation result.

At this moment, equal predetermined value from writing the data total amount that channel buffer 11 reads and record on the CD 1, or enter when suspending the write operation instruction by input block 14, CPU21 suspends write operation.At last, CPU21 uses the file system operation instruction that is included in the handling procedure in advance, revises the pointer of pointing out the CHUNK_0001.MPEG2 in the file system (promptly on CD 1), with the position of the CHUNK_0001.MPEG2 that points out to store again.

Suppose on CD 1, to write down now and resemble the sort of message file shown in Figure 26 and stream file.In this example, CD 1 comprises program file and 3 heading files, i.e. TITLE_001._VDR, TITLE_002._VDR, the TITLE_003._VDR of PROGRAM_001.PGI by name.

In addition, CD 1 also comprises 2 chunk-group message files of a CHUNKGROUP_001.CGIT and CHUNKGROUP_002.CGIT.CD 1 also comprises 3 stream files, be CHUNK_0001.MPEG2, CHUNK_0011.MPEG2, CHUNK_0012.MPEG2, and 3 CHUNK_0001.ABST by name, CHUNK_0011.ABST, CHUNK_0012.ABST, be used for storing respectively the message file of the information of CHUNK_0001.MPEG2, CHUNK_0011.MPEG2, CHUNK_0012.MPEG2.

Show the logical organization that comprises the CD 1 of information and stream file shown in Figure 26 among Figure 27.In this example, the block message file of CHUNK_0001.ABST, CHUNK_0011.ABST by name, CHUNK_0012.ABST is specified CHUNK_0001.MPEG2, CHUNK_0011.MPEG2, CHUNK_0012.MPEG2 stream file respectively.Specifically, in the chunk_file_id scope of CHUNK%%%%.ABST file shown in Figure 24, specify the file ID of each gravity flow.

In addition, in this example, although the piece group message file of CHUNKGROUP_001.CGIT by name is specified CHUNK_0001.ABST block message file, and CHUNKGROUP_002.CGIT by name specifies CHUNK_0011.ABST and CHUNK_0012.ABST block message file.Specifically, in the chunk_info_file_id of the chunk_arrangement_info () that Figure 23 shows, the file ID of physical block information.

In addition, in this example, although the piece group message file of CHUNKGROUP_001.CGIT by name is specified CHUNK__0001.ABST block message file, and the piece group message file of CHUNKGROUP_002.CGIT by name is specified CHUNK__0011.ABST and CHUNK_0012.ABST block message file.Specifically, in the chunk_info_file_id scope of the chunk_arrangement_info () that Figure 23 shows, the file ID of physical block information.In piece group message file, comprise chunk_arrangement_info ().Part number with chunk_arrangement_info () is the same with the quantity of the piece that closes with the piece faciation.In piece group message file, form data structure.In detail, describe per 1 part of the chunk_arrangement_info () that shows among Figure 23 among the chunk_connection_info () of Figure 22, be described among its CHUNKGROUP_@@@.CGIT that in Figure 21, shows.

CHUNKGROUP_001 only comprises 1 chunk_arrangement_info (), and its chunk_info_file_id scope is specified CHUNK_0001.From another point of view, CHUNKGROUP_002 only comprises 2 chunk_arrangement_info (), and its chunk_arrangement_info () scope is specified CHUNK_0011 and CHUNK_0012 respectively.With such scheme, the piece group energy is enough specified the information such as a plurality of chunks playback order.Specifically, at first, the chunkgroup_time_base_offset in the CHUNKGROUP_@@@.CGIT shown in Figure 21 is used to determine the clock initial value in the piece group.Then, when chunks is catalogued, specify in presentation_start_cg_time_count and the presentation_end_cg_time_count of chunk_arrangement_info shown in Figure 23 ().Shown in Figure 28 such as resembling, suppose that the length (time) of CHUNK_0011 is A, and the length of CHUNK_0012 (time) is B.In this case, the presentation_start_cg_time_count of CHUNK_0011 equals chunkgroup_time_base_offset and makes presentation_end_cg_time_count equal (chunkgroup_time_base_offset+A) thus.On the other hand, the presentation_start_cg_time_count of CHUNK_0012 equals (chunkgroup_time_base_offset+A), and, make thus presentation_end_cg_time_count equal (chunkgroup_time_base_offset+A+B).According to some information are set in the method, limit CHUNKGROUP_002, make the CHUNK_0012 that after chunk_0011, just resets.

It should be noted, if chunk_0011 and CHUNK_0012 were reset with the time of overlapping each other, the value of presentation_end_cg_time_count that then can chunk_0012 is set to the presentation_start_cg_time_count less than CHUNK_0011.In addition,, in the conversion between 2 stream, can specify specific function, as crescendo, diminuendo, erase etc. by describing the transition_info () among the chunk_arrangement_info shown in Figure 23 ().

In this example shown in Figure 26 (or Figure 27), the heading message file of TITLE_001.VDR by name and TITLE_002.VDR is specified CHUNKGROUP_001.CGIT piece group message file, and the heading message file of TITLE_003.VDR by name is specified CHUNKGROUP_002.CGIT piece group message file.Specifically, in the cgit_file_id scope of the title_info () that Figure 16 shows, physical block group's file ID, and, in title_start_chunk_group_time_stamp and title_end_chunk_group_time_stamp scope, specify in the time zone that limits title in the piece group.

For example, in example shown in Figure 27, TITLE_001 and TITLE_002 point to respectively CHUNKGROUP_001 front and back half.Should be noted in the discussion above that in, in this way separation of C HUNKGROUP_001 by the requirement that the user did.Burble point is arbitrarily for the user, and can not pre-determine.In this example, with the position that spacing A separates burble point is being set with the CHUNKGROUP_001 front end.

TITLE_001 specifies CHUNKGROUP_001 as the piece group, and the start time of CHUNKGROUP_001 is as time start of header, by the time point of user's appointment as the title concluding time.

That is to say, the title_start_chunk_group_time_stamp of the chunkgroup_time_base_offset (starting position) of CHUNKGROUP_001 as TITLE_001 is set, and, (the chunkgroup_time_base_offset+ offset A of CHUNKGROUP_001) title_end_chunk_group_time_stamp as TITLE_001 is set.

In addition, TITLE_002 specifies CHUNKGROUP_001 as chunk_group, and as time start of header, the concluding time of CHUNKGROUP_001 is as the title concluding time by the time point of user's appointment.

That is to say, [chunkgroup_time_base_offset of CHUNKGROUP_001 (starting position)+the_offset A] tile_start_chunk_group_time_stamp as TITLE_002 is set, and, [length of the chunkgroup_time_base_offset+CHUNKGROUP_001 of CHUNKGROUP_001] title_end_chunk_group_time_stamp as TITLE_002 is set.

And then TITLE_003 specifies CHUNKGROUP_002 as the piece group, and the start time of CHUNKGROUP_002, the concluding time of CHUNKGROUP_002 was as the concluding time of title as the start time of title.

In other words, the title_start_chunk_group_time_stamp of the chunkgroup_time_base_offset of CHUNKGROUP_002 as TITLE_003 is set, and, [length of the chunkgroup_time_base_offset+CHUNKGROUP_002 of CHUNKGROUP_002] title_end_chunk_group_time_stamp as TITLE_003 is set.

In addition, in this example, the program information file, PIF of called after PROGRAM_001.PGI is specified the TITLE_003 part of being reset after the TITLE_001 part.Specifically, utilize the title_number specified title of the play_item () that Figure 20 shows and utilize the time that limits with each title to specify start time and concluding time.In this method, extract groove (cut), collect a plurality of such grooves with the formation program.

Follow and describedly be, when operation performed when carrying out attached as record and be added to new information on the CD 1.In fact, realize that typically the addition record operation is to finish videograph, or work as the user and operate input block 14, utilize regularly the videograph function to pass through real-time mode with input command, finish the recording video data on the compact disk equipment, under the situation of back, if the user only pushes the videograph button, concluding time of there is no telling videograph then.But, touch the videograph feature button if push one, then can estimate the concluding time of videograph.One touches the videograph function is so a kind of function, is used to carry out the record from the predetermined period of time that begins by the press button time.

Followingly regularly videograph is described with embodiment.In this case, the compact disk equipment user specifies the information that needs, as the start and end time of videograph, and the bit rate of bit stream and the channel of videograph in advance.In addition, when being used as the videograph reservation, need to confirm in advance, in CD 1, be preserved for the bit rate of appointment and the videograph enough big clear area of start and end time of appointment.

During forming videograph and keeping and carry out between videograph, can carry out other operations of making the data record toward CD 1.In this case, at this moment the zone that may be used in the program of recorded and stored fully can no longer be stored with assigned bit rate.In this case, CPU21 makes bit rate be reduced to less than the bit rate of appointment, be recorded to the clear area with the information that allows to preserve when long, or just information content is the same with the quantity that the clear area can hold, and is recorded on the CD 1 by keeping the constant assigned bit rate of former state.In either case, CPU21 carries out the videograph operation of preserving, and, on time point, in the videograph of preserving, run into problem, much less, the problem of generation is to notify the user information.

As time goes on, near the videograph start time of preserving, utilize embedding timer and clock signal, CPU21 is automatically from sleep state recovery operation state.Then, CPU21 uses the file system operation instruction that is included in advance in the handling procedure, to ensure the zone of the program that is used for recorded and stored as wide as possible on CD 1.Bit rate by appointment is designated as the desired area size of program that record keeps as the numerical value that the result who increases writing time obtains.Be to deduct the appointment start time that keeps videograph the concluding time writing time.At first, CPU21 ensures the zone of this size.In addition, if for the videograph operation of preserving requires message file except that stream file, then also need to obtain as be on CD 1, write down other message files require big zone.The example of other message files is the heading message files that are used to store new title, if can not ensure the zone of the size that requires, then the measure of being taked is, such as changing bit rate, or only is recorded on the CD 1 adjustable information in the clear area by constant bit rate.

Should be noted in the discussion above that owing to write down new title at that time, so the user is stored in new stream file on the CD 1 with name, as the new stream file under new stream catalogue.Suppose that this title is MPEGAVSTREAM_003CHUNK_0031.In other words, the new stream file of the CHUNK_0031.MPEG2 by name that produces below the STREAM_003 catalogue under the MPEGAV catalogue as shown in figure 29.

CPU21 sends the instruction to other part executive logging states.Such as, utilize 10 pairs of never illustrated tuners of scrambler to be input to the vision signal of input end P3 and be input to after the coding audio signal of input end P4, coding result is stored into write in the channel buffer 11.Then, CPU21 moves to shaven head 2 based on the address information writing position than the clear area of preserving on CD 1.Then, CPU21 makes shaven head 2, RF and demodulation/modulation circuit 3 and ECC circuit 4 be in write state, and simultaneously, switch 5 is transformed into the position that connection writes channel buffer 6.And after the position of fine tuning shaven head 2, CPU21 utilizes shaven head 2 beginning write operations.In the method, read the content of the CHUNK_0031.MPEG2 that newly provides from writing channel buffer 11, and supply with ECC circuit 4 by switch 5.At ECC circuit 4, bug patch code is added to supplies with RF and demodulation/modulation circuit 3 then with in the modulated content., record on the CD 1 as modulation result by the signal of RF and demodulation/modulation circuit 3 outputs with bare headed 2.

When CPU21 carries out above-mentioned write operation and satisfies one of back condition simultaneously, the CPU21 shut-down operation:

(1) reaches recording operation concluding time of preservation.

(2) clear area uses up, or because of other reasons can not be to CD 1 data recording.

(3) receive the instruction that suspends videograph.

Then, CPU21 utilizes the file system operation instruction that is included in advance in the handling procedure, revises the pointer that points to CHUNK_0031.MPEG2 in the file system, to point to the position of storing CHUNK_0031.MPEG2 again.In addition, CPU21 is storage block information, piece group information and heading message document, and, utilize and give the file designation log file.It should be noted, the clear area of distributing to file on CD 1 need aspect writing time or the retention time to be fixed as much as possible.

In this method, create similar those new files shown in Figure 30.In the figure, each of the message file of at this moment creating again represented with the asterisk ★ that appends to the file name right-hand member.

Figure 31 is the chart that is illustrated in the relation in the message file of creating again.As shown in the figure, TITLE_004 specifies CHUNKGROUP_003, and CHUNKGROUP_003 specifies CHUNK_0031, and CHUNK_0031 specifies STREAM_0031 successively.

In other words, new stream is recorded on the message file of TITLE_004 by name.The user utilizes the function of the compact disk equipment check title and playback TITLE_004 can understand information as the TITLE_004 attribute.

Describe below information is write operation on Figure 26 or the existing data on CD 1 shown in Figure 27.As recorded video signal, rewriting recording operation is such operation, writes down new procedures on program existing on the CD 1, wipes existing program.

In rewriting recording operation, the position that begins to operate is important.The imagination user specifies the rewriting recording operation that begins from the front end of TITLE_001.In operation, mutually continuously information write on TTTLE_001, TITLE_002, above the TITLE_003.Even when arriving the TITLE_003 end, do not finish if rewrite recording operation, then keep recording operation by range of distribution in the clear area on CD 1.If specify the rewriting recording operation with TITLE_002, then, be not recorded among the TITLE_001 so there is information because TITLE_001 is in before the opening entry position as record start position.

Imagination begins to rewrite recording operation by time recording from TITLE_003.In this case, the compact disk equipment user specifies necessary information, for example channel of the bit rate of the start and end time of videograph, bit stream and videograph in advance.It is important record start position for rewriting recording operation that imagination is specified the beginning conduct of TITLE_003.In addition, suppose that videograph start and end time of having confirmed the bit rate that is used to specify and appointment in advance stays clear area in the CD 1 with enough big size, make to preserve videograph at that time.In rewriting recording operation, the total amount of title (or a plurality of title) size begins and can be rewritten from the record start position, and the clear area size of staying on the CD 1 is the size of rewriting the zone.More particularly, under this routine situation, be the size that to rewrite the zone with STREAM_0011 that stays the clear area size control on the CD 1 and the total amount size of STREAM_0012 by TITLE_003.

In rewriting recording operation, there are some to select, what order the practical operation that information records in the recordable zone is carried out.At first, according to the 1st kind of possible method, by stream order executive logging operation by the title appointment.In other words, in this example, from the operation of STREAM_0011 beginning opening entry, the end along with arriving STREAM_0011 makes recording operation be extended to the beginning of STREAM_0012.End along with arriving STREAM_0012 makes recording operation be extended to the clear area.In another method, with the operation of clear area opening entry, along with the whole of clear area use up, recording operation is extended to existing stream.

Method better is the recording operation analog video tape the preceding.In other words, method is characterised in that the preceding, because record is as the recording operation of video-tape, so the user is familiar with recording operation easily.From the data protection viewpoint, the method for back is better, it is characterized in that, after using up idle posting field, wipes the stream that has write down later on again.

Should be noted in the discussion above that do the videograph holding time and carry out videograph between the running time during, can carry out the operation of another data recording to the CD 1.In this case, can no longer protect the clear area that is used for the logging program at this moment preserved with assigned bit rate, this is within the possible range fully.In this case, as previously mentioned, CPU21 automatically is reduced to less than bit rate the value of assigned bit rate, so that allow to be recorded in the information of the time span of preserving the clear area or just the bit rate of constant appointment is recorded on the CD 1 by keeping same as before with the as many information that can hold in the clear area.

As time goes on, near the videograph start time of preserving, CPU21 is automatically from sleep state recovery operation state.Then, CPU21 ensures the clear area on all CDs 1.Much less also have method to be,, need alternative fixedly clear area, zone at current point in time in the fixing clear area of time point.In the following description, the fixing clear area that requires before recording operation begins.

It should be noted, because with appointment start time, concluding time and bit rates such as time recordings, so know the size of required posting field in advance.In this case, but predetermined fixed is required big or small zone with required size or border extended to the institute of a certain degree.In addition, if for the videograph of preserving requires message file, then must also fixedly resemble and on dish 1, write down alternative document and require so big zone.The example of other message files is the heading message files that are used to store new title.

Owing to write down new title at that time, so the user gives the new stream file name of storage on CD 1, as the new stream file under the new stream catalogue.The imagination title is MPEGAVSTREAM_002CHUNK_0031.In other words, create the new stream file of CHUNK_0031.MPEG2 by name under the TREAM_002 catalogue below the MPEGAV catalogue, shown in figure 32.

Then, be written to write channel buffer 11 before, with 10 pairs of scramblers from the vision signal of input end P3 input with from the coding audio signal of input end P4 input.Secondly, CPU21 moves to shaven head 2 writing position of basis address information of fixing clear area on CD 1.Then, CPU21 makes shaven head 2, RF and demodulation/modulation circuit 3 and ECC circuit 4 be in write state, at the same time, switch 5 is transformed into and writes the position that channel buffer 11 is connected.And after fine tuning shaven head 2 positions, CPU21 utilizes shaven head 2 beginning write operations.In this method, read the content of the CHUNK_0031.MPEG2 that provides again from writing channel buffer 11, and supply with ECC circuit 4 by switch 5.In ECC circuit 4, bug patch code is added to supplies with RF and demodulation/modulation circuit 3 then with in the modulated content.Signal by RF and demodulation/modulation circuit 3 outputs is recorded on the CD 1 by shaven head 2 as the result who modulates.

At this moment, at first, rewrite the stream file of called after CHUNK_0011.MPEG2.Along with the end of record CHUNK_0011.MPEG2, recording operation is extended to the beginning of CHUNK_0012.MPEG2.Along with the end that reaches CHUNK_0012.MPEG2, recording operation is extended to CHUNK_0031.MPEG2.

When CPU21 carries out above-mentioned write operation, satisfy one of aforementioned 3 conditions simultaneously, then CPU21 shut-down operation.

Then, CPU21 uses the file system operation instruction that comprises in advance in handling procedure, to revise stream file, block message, piece group information and heading message.

Also have,, change the structure of file by finishing the timing of write operation.Such as, after the operation of 2 stream files rewriting CHUNK_0011.MPEG2 by name and CHUNK_0012.MPEG2 of being through with, data recording during to CHUNK_0031.MPEG2, the file structure that then is stored in the CD 1 changes into as shown in figure 33 when further.In the figure, the message file of at this moment creating again that utilizes the asterisk ★ append to the file name right-hand member to represent.

Figure 34 is illustrated in Figure 33 to show the blueprint that concerns in the middle of the file of creating again.Compare with the relation that Figure 31 is showed, clearly illustrate that, increase CHUNK_0031 as the piece that in CHUKGROUP_002, comprises, and CHUNK_0031 specifies STREAM_0031 by the TITLE_003 appointment.

If on existing stream, finish the rewriting recording operation in the process of writing information, promptly, if on CHUNK_0011, finish the rewriting recording operation in this embodiment in the process of writing information, then, be used to rewrite recording operation and fixing CHUNK_0031 stream so discharge owing to there are not data newly to be rewritten on it.Under these circumstances, carrying out specific title handles.In other words, begin to rewrite recording operation, if way complete operation therein, then this title separately from taking the lead of TITLE_003.More particularly, form from rewriting the recording operation starting position by TITLE_003 as shown in figure 35 and form remainder (being the remainder of TITLE_003) to the zone of end position with by TITLE_004.

Then, the operation of narration playback title.Imagination comprises that for the title of resetting the CD 1 of the file that resembles Figure 26 displaying is installed on the compact disk equipment.At first, when CD 1 was inserted in the compact disk equipment, CPU21 took out message file and is stored in the ram cell 24 from CD 1.The repetition basic operation that the aforementioned information file is just read in these operations of taking-up and storage file.

The message file of at first being read by CPU21 is VOLUME.TOC and ALBUM.STR.So CPU21 checks registering each under the catalogue of TITLE by name has how many files of file-name extension " .VDR ".File with file-name extension " .VDR " is the file that is used to store heading message.Exist as many this class file of the title in the CD 1.In example shown in Figure 26, the quantity of title is 3.So CPU21 takes out 3 heading message files, and is stored in the ram cell 24.

Then, CPU21 controls osd control circuit 9, to produce the character information of the heading message of displayed record on CD 1.By combiner circuit 8 composite characters information, and synthetic signal is output to the display that is shown thereon by output terminal P1 with vision signal.In this example, be 3 titles here, show the attribute on length, title, writing time and date such as each title.

The imagination user specifies playback TITLE_002, such as, the TITLE_002 message file comprises the file ID of specifying CHUNKGROUP_001.More particularly, file ID is recorded in the cgit_file_id territory of title_info () shown in Figure 16.CPU21 document retaining ID, and CHUNKGROUP_001 stored in the ram cell 24.

Then, CPU21 checks that what piece the start and end time of TITLE_002 is, the title_start_chunk_group_time_stamp of promptly corresponding title_info shown in Figure 16 () and title_end_chunk_group_time_stamp.CPU21 is by relatively checking corresponding blocks with start and end time from the message segment of the registration piece of CHUNKGROUP information acquisition.The message segment that is compared is presentation_start_cg_time_count and the presentation_end_cg_time_count of chunk_arrangement_info () shown in Figure 23.In this example, the start time of TITLE_002 is consistent with the intermediate point of CHUNK_0001, as obtain clear the displaying from Figure 27.That is to say, for thus from beginning the TITLE_002 that resets, must be from its intermediate point playback CHUNK_0001.MPEG2 stream file.

Then, upward what point is consistent with stream in the beginning of CPU21 inspection TITLE_002.In other words, what make-up time CPU21 goes up (when feature) by the start time of calculating decision TITLE_002 with stream consistent, utilizes just definite playback starting point before the start time of characteristic point information then in the CHUNK file.In this method, can confirm the compensation spacing of the playback starting point that begins from file.

Secondly, CPU21 uses the file system operation instruction that comprises in advance in handling procedure, to determine physical address and the length thereof of the CHUNK_0001.MPEG2 on the CD 1.Be added to again in addition on this physical address in the compensation address that the playback starting point is found more earlier, with the last address of determining the playback starting point of TITLE_002.

Then, CPU21 is shaven head 2 read-out positions that move to based on the address information of CHUNK_0001.MPEG2.Then, CPU21 makes shaven head 2, RF and demodulation/modulation circuit 3 and ECC circuit 4 be in the state of reading, and at the same time, switch 5 is transformed on the position that connects read channel buffer 6.And after the position of fine tuning shaven head 2, CPU21 utilizes shaven head 2 beginning read operations.In the method, by shaven head 2 contents of reading CHUNK_0001.MPEG2, be stored in the read channel buffer 6.

The data that are stored in the read channel buffer 6 are provided for code translator 7, to accept to produce the decoding processing of video and audio signal.At time point, decoded device 7 decodings also are displayed on the size that the data total amount of reading from CD 1 on the display equals CHUNK_001.MPEG2, and CPU21 is transferred to the operation of playback information by TITLE_003.Use the same method as the operation of playback information by TITLE_002 and to carry out operation by the TITLE_003 playback information.

Along with the operation of finishing by the title playback information of registration, maybe when reception stops the instruction of read operation, suspend and read and decipher processing.

It should be noted that when new building inserted compact disk equipment as CD 1, maybe when inserting when having the dish of different editions, CPU21 attempted to read VOLUME.TOC and ALBUM.STR from dish, insertion dish at that time, but do not have these files in coiling.Under these circumstances, if VOLUME.TOC and ALBUM.STR can not be from dish when reading, CPU21 output requires the information of user input instruction.In response to instruction, has different editions as fruit tray 1, then customer requirements CPU21 ejects CD 1 usually, as fruit tray 1 is the new building with same version, then be typically to CD and settle initial value, or having same version but wherein data are destroyed as fruit tray 1, restore data then typically uses the same method.

Below, the narration write protection.On the shell of CD 1, provide prevention not shown in the figures to write indenture.Write indenture by suitably being provided with to stop, can stop the rewriting recording operation of CD 1.In addition, can be used as data about the information of write protection is recorded on the CD 1.More particularly; the information of relevant write protection can write the write_protect () (shown in Figure 7) of the volume_information () (shown in Figure 3) of VOLUME.TOC shown in Figure 2; the flags_for_title of the title_info () (shown in Figure 16) of TITLE###.VDR shown in Figure 15, or the flags_for_program of the program () (shown in Figure 180) of PROGRAM_$$$.PGI shown in Figure 17.

Take write_protect () shown in Figure 7 that write protection is described as an example.The write_protect_length of write_protect shown in Figure 7 () is the zone that is used to write down the length of write_protect ().Volume_write_protect_level shown in Figure 36 is used to all titles of record on CD 1 and the zone that program is provided with write-protected recorded information.Show at the mid-level 0 of volume_write_protect_level write protection is not set.That is to say that level 0 shows highly freely to carry out rewrites recording operation on CD 1.Show just at the mid-level 1 of volume_write_protect_level and can change volume_write_protect_level.Show under the low write protection level except that 0 level at the mid-level 2 of volume_write_protect_level and can change ALBUM.STR and information.Show under the low write protection level except that 0 level at the mid-level 3 of volume_write_protect_level and can change VOLUME.TOC and information.

But show reprogramming and information under the low write protection level except that 0 level at the mid-level 4 of volume_write_protect_level.Show under the low write protection level except that 0 level at the mid-level 5 of volume_write_protect_level and can change title and information.Show under the low write protection level except that 0 level, can change to have at the mid-level 6 of volume_write_protect_level as suffix.MPEG2, the .ABST of file name expansion or file and the information of .CGIT.

Password_enable_flag is the effective or invalid mark of password_for_volume_write_protect that shows in the back narration.With regard to it shows the effective mark of password_for_volume_write_protect, in order to change write_protect (), or to the expression in detail of its do, again create write_protect (), or change or delete that it has existed, need the user to import to be recorded in the password among the password_for_volume_write_protect.Append_only_flag is the mark that is used to limit by the write_protect () variation range of volume_write_protect_level permission.In other words, append_only_flag is the mark that only is used to limit for additional variation range.Like this, can not change the information that has existed or write down with this mark that is provided with.

Specifically, with regard to the append_only_flag that resets to 0 value, can carry out write_protect with the value of above-mentioned volume_write_protect_level and handle, as shown in figure 37.In this case, use with quadrat method and can carry out the write_protect processing, do not exist as append_only_flag.On the other hand, just be arranged to the append_only_flag of 1 value, in by volume_write_protect_level value restricted portion, can append to new data in the information.

Get back to write_protect () shown in Figure 7, expiration_tine_enable_flag shows that write_protect_expiration_time described later () is effective or invalid mark.Number_of_times_enable_flag shows that number_of_times described later is effective or invalid mark.Password_for_volume_write_protect is used for the zone that record requires to change write_protect () password.

Write_protect_set_time () is the zone that is used for record data and setting or changes the write_protect time at last.Express with the BCD version, represent data with year, month, day, and time spent, minute, second express time on the other hand.Write_protect_expiration_time () is used to write down the data of password validity limit and the zone of time.Express with the BCD version, resemble under write_protect_set_time () occasion, represent data with year, month, day, and time spent, minute, second express time on the other hand.Can be password the validity limit is set.When the validity limit of password finishes, promptly reached the validity limit of password, what for to also changing write_protect () without password.Can the validity limit be set non-definite value.

Then, change the process of write_protect () with reference to flowchart text shown in Figure 38.As shown in the figure, flow process begins with step S1, and in this step, the user is by handling the instruction of input block 14 inputs change write_protect ().Then, treatment scheme is followed step S2, in this step, CPU21 forms about the judgement of whether writing down password, and record is in the password_for_volume_write_protect of the write_protect () of the included volume_information () of the VOLUME.TOC that is stored in ram cell 24.If write down password, then treatment scheme proceeds to step S3, and in this step, CPU21 forms about the write_protection_expiration_time () in write_protect () to show at password at that time whether effectively judge.

As mentioned above, write_protect_expiration_time () is the zone that is used to write down the date and time of password validity limit.In step S3, CPU21 formation can or can not be the judgement before of validity limit about current date and time.If it is effective at that time that the write_protection_expiration_time () in write_protect () shows password, promptly, if current date and time is before the validity limit, then flow processing proceeds to S4, in this step poly-in, CPU21 controls osd control circuit 9, requires the information of user input instruction with generation.Be output to display via combiner circuit 8 and output terminal P1 information, and show thereon.Treatment scheme proceeds to step S5 then, and in this step, the user is according to the response to information, and operation input block 14 is entered password.

So, treatment scheme proceeds to step S6, and in this step, whether CPU21 forms about the user is the judgement of correct password at the password of step S5 input, that is, the password by user input whether with the password match that in password_for_volume_write_protect, writes down.If password and the password match that is recorded among the password_for_volume_write_protect by user's input, then treatment scheme enters step S8, in this step, CPU21 controls osd control circuit 9, notifies the user can change the information of write_protect with generation.Via combiner circuit 8 and output terminal P1, information is output to display, and shows thereon.

Treatment scheme enters step S9, in this step, according to the response of information being passed through the change of operation input block 14 users input in write_protect ().Because of input changes, treatment scheme enters step S10, and in this step, CPU21 revises write_protect () according to the change of input.Specifically, CPU21 revises the write_protect () of word storage in ram cell 24, and a data recording of change is to CD 1.

On the other hand, if the judged result that forms at step S6 shows, do not match by the password that writes down among the password of user input and the password_for_volume_write_protect, treatment scheme proceeds to step S7, in this step, CPU21 controls osd control circuit 9, notifies the user can not change the information of write_protect () with generation.In this case, skips steps S8 is to the processing section of S10, and, do not allow the content of user's modification write_protect ().

On the other hand, if showing at password_for_volume_write_protect, the judged result that forms at step S2 do not write down password, or the wrire_protection_expiration_time () of judgment result displays in write_protect () that forms at step S3 shows that password is invalid at that time, treatment scheme enters step S8, carries out this and handles and processing subsequently.That is to say, in this case, allow user's modification not need the content of the write_protect () that enters password.

Below, with reference to the narration of the process flow diagram shown in Figure 39 to 41 recording operation.As shown in figure 39, process flow diagram begins with step S21, and in this step, CPU21 takes out the append_only_flag of the write_protect () that is stored in the volume_information () that VOLUME.TOC comprises in the ram cell 24.Treatment scheme proceeds to step S22 then, and in this step, CPU21 forms the judgement that whether has 1 value about the append_only_flag that takes out at step S21.If append_only_flag does not have 1 value, that is, if append_only_flag has 0 value, treatment scheme enters step S34 then, and in this step, CPU21 carries out this and handles and processing subsequently.

At step S34, CPU21 takes out the volume_write_protect_level that is stored in the write_protect () in the ram cell 24.Then, to S41, CPU21 forms the judgement about whether volume_write_protect_level has 0 to 6 value respectively at step S35.

Specifically, if the judged result that forms at step S35 shows that volume_write_protect_level has 0 value, then treatment scheme proceeds to step S43, and in this step, the CPU21 executive logging is by the data of operation input block 14 by user's input.In this case, do not rewrite recording operation, so allow user's executive logging highly freely owing to stop.

If the judged result that forms at step S36 shows, volume_write_protect_level has 1 value, then treatment scheme enters step S44, and in this step, whether the data that CPU21 forms about being recorded are judgements of volume_write_protect_level.With reference to Figure 36 as previously mentioned, if volume_write_protect_level has 1 value, then can revise the level of itself, but other data can not be rewritten.Like this, if the judged result that forms at step S44 shows that the data that are recorded are volume_write_protect_level, then treatment scheme proceeds to step S43, and in this step, CPU21 rewrites level.If the judged result that forms at step S44 shows that the data that are recorded are not volume_write_protect_level, on the other hand, treatment scheme proceeds to S45, in this step, CPU21 controls osd control circuit 9, notifies the user not allow the information of recording operation with generation.Via combiner circuit 8 and output terminal P1, information is output to display and is shown thereon.

If the judged result that forms at step S37 shows that volume_write_protect_level has 2 values, then treatment scheme proceeds to S46, and in this step, whether the data that CPU21 forms about being recorded are the judgement of ALBUMSTR.For level is 2, just ALBUM.STR and can be changed at the volume_write_protect_level that is lower than the ALBUM.STR level.Like this, if the data of input are ALBUM.STR, then treatment scheme turns back to step S43, and in this step, CPU21 carries out by the data recording of operation input block 14 by user's input.If the judged result that forms at step S46 shows that the data of input are not ALBUM.STR, on the other hand, treatment scheme is returned step S44, and in this step, CPU21 carries out this and handles and processing subsequently.In other words, if the data of input are voltume_write_protect_level, then allow recording operation.If the data of input are not volume_write_protect_level, then on the other hand, stop recording operation.

If the judged result that forms at step S38 shows that volume_write_protect_level has 3 values, then treatment scheme enters step S47, and in this step, CPU21 formation is the judgement of VOLUME.TOC about the data that whether are recorded.For level 3, can only change VOLUME.TOC and volume_write_protect_level.Like this, if the judged result that forms at step S47 shows that the data of input are VOLUME.TOC, then treatment scheme proceeds to step S43, and in this step, CPU21 carries out according to the record of operation input block 14 by the data of user's input.If the judged result that forms at step S47 shows that the data of input are not VOLUME.TOC, on the other hand, treatment scheme turns back to step S46, and in this step, CPU21 carries out this processing and following processing.That is to say,, then allow recording operation if the data of input are ALBUM.STR or volume_write_protect_level.If the data of input neither volume_write_protect_level neither ALBUM.STR, then on the other hand, stop recording operation.

If the judged result that forms at step S39 shows that volume_write_protect_level has 4 values, then treatment scheme proceeds to step S48, and in this step, whether the data that CPU21 forms about being recorded are the judgement of program information file, PIF.For level 4, only program information file, PIF, ALBUM.STR and volume_write_protect_level can be changed.

Like this, if the judged result that forms at step S48 shows that the data of input are program information file, PIFs, then treatment scheme is returned step S43, and in this step, CPU21 carries out according to the record of operation input block 14 by the data of user's input.If the judged result that forms at step S48 shows that the data of input are not program information file, PIFs, then on the other hand, treatment scheme is returned step S47, and in this step, CPU21 carries out this processing and following processing.In other words, if the input data are VOLUME.TOC, ALBUM.STR or volume_write_protect_level, then allow recording operation.If the input data neither volume_write_protect_level, VOLUME.TOC neither ALBUM.STR, then on the other hand, stop recording operation.

If the judged result that forms at step S40 shows that volume_write_protect_level has 5 values, then treatment scheme proceeds to step S49, and in this step, whether the data that CPU21 forms about being recorded are the judgement of heading message file.For level 5, only heading message file, program information file, PIF, VOLUME.TOC, ALBUM.STR and volume_write_protect_level can be changed.Like this, if the judged result that forms at step S49 shows that the data of input are the heading message files, then treatment scheme turns back to step S43, and in this step, CPU21 carries out by the record of operation input block 14 by the data of user's input.If the judged result that forms at step S49 shows that the data of input are not the heading message files, then on the other hand, treatment scheme turns back to step S48, and in this step, CPU21 carries out this processing and processing subsequently.That is to say,, then allow recording operation if the input data are program information file, PIF, VOLUME.TOC, ALBUM.STR or volume_write_protect_level.If the input data then on the other hand, stop recording operation neither volume_write_protect_level, program information file, PIF, VOLUME.TOC neither ALBUM.STR.

If the judged result that forms at step S41 shows, volume_write_protect_level has 6 values, then treatment scheme proceeds to step S50, and in this step, whether the data that CPU21 forms about being recorded are the judgement of stream file or piece group message file.For level 6, only stream file, piece group message file, heading message file, program information file, PIF, VOLUME.TOC, ALBUM.STR and volume_write_protect_level can be changed.Like this, if the judged result that forms at step S50 shows that the data of input are stream file or piece group message file, then treatment scheme is returned step S43, and in this step, CPU21 carries out by the record of operation input block 14 by the data of user's input.If the judged result that forms at step S50 shows that the data of input are not stream file or piece group file, then on the other hand, treatment scheme turns back to step S49, and in this step, CPU21 carries out this and handles and following processing.That is to say,, then allow recording operation if the data of input are heading message file, program information file, PIF, VOLUME.TOC, ALBUM.STR or volume_write_protect_level.If the data of input are neither volume_write_protect_level, heading message file, program information file, PIF, VOLUME.TOC, neither ALBUM.STR, then on the other hand, stop recording operation.

If the judged result that forms at step S41 shows that volume_write_protect_level does not have 6 values, then on the other hand, treatment scheme proceeds to step S42, in this step, and the CPU21 error process.This is because volume_write_protect_level is set at the value in 0 to 6 scope, as shown in figure 36.The temporary transient value of not using in 7 to 15 scopes.Like this, because value is set volume_write_protect_level in 7 to 15 scopes, so, error process.

If the judged result that forms at step S22 shows that append_only_flag has 1 value, then on the other hand, treatment scheme proceeds to step S23, and in this step, CPU21 takes out volume_write_protect_level.Then, treatment scheme proceeds to step S24 to S28, and in above-mentioned steps, CPU21 forms the judgement about whether volume_write_protect_level has 0 to 6 value.

In detail, the judged result that forms at step S24 shows, volume_write_protect_level has 0 value can be interpreted into that to look like be in fact not write down write protection information.In this case, treatment scheme turns back to step S43, and in this step, CPU21 carries out by the record of input operation input block 14 by the data of user's input.

If the judged result that forms at step S25 shows, volume_write_protect_level has 1,2 or 3 values, then treatment scheme turns back to step S44, and in this step, whether the data that CPU21 forms about being recorded are the judgement of volume_write_protect_level.In this case, the volume_write_protect_level with 1,2 or 3 values shows that only level itself can be modified, but other data can not be rewritten.Like this, if the judged result that forms at step S44 shows that the data of input are volume_write_protect_level, then treatment scheme turns back to step S43, and CPU21 rewrites level in this step.If the judged result that forms at step S44 shows that the data that are recorded are not volume_write_protect_level, then on the other hand, treatment scheme proceeds to step S45, in this step, CPU21 controls osd control circuit 9, notifies the user not allow the information of recording operation with generation.This is because each of ALBUM.STR and VOLUME.TOC is not certainly by additional data.Like this, the addition record operational order of carrying out about ALBUM.STR and VOLUME.TOC always is rejected.

If the judged result that forms at step S26 shows that volume_write_protect_level has 4 values, then treatment scheme proceeds to step S30, and in this step, whether the data that CPU21 forms about being recorded are the judgement of the data of program information file, PIF.If the judged result that forms at step S30 shows, the data of input are not the data of program information file, PIF, then treatment scheme proceeds to step S44, and in this step, whether the data that CPU21 forms about being recorded are the judgement of volume_write_protect_level.If the judged result that forms at step S44 shows that the data of input are volume_write_protect_level, then treatment scheme proceeds to step S43, and in this step, CPU21 rewrites level.If the judged result that forms at step S44 shows that the data that are recorded are not volume_write_protect_level, then on the other hand, treatment scheme proceeds to step S45, in this step, CPU21 controls osd control circuit 9, notifies the user not allow the information of recording operation with generation.

Whether if the judged result that forms at step S30 shows that the data of input are the data of program information file, PIF, then treatment scheme proceeds to step S31 on the other hand, be the judgement of extra-instruction to form about recording instruction.If recording instruction is extra-instruction, then treatment scheme turns back to step S43, in this step, and the processing of CPU21 executive logging program information file, PIF data.If the judged result that forms at step S31 shows that recording instruction is not extra-instruction, that is, recording instruction is not to rewrite instruction, and then on the other hand, treatment scheme turns back to step S44, and in this step, CPU21 carries out this and handles and processing subsequently.

If the judged result that forms at step S27 shows that volume_write_protect_level has 5 values, then treatment scheme proceeds to S32, and in this step, whether the data that CPU21 forms about being recorded are judgements of the data of heading message file.Whether if the judged result that forms in step S32 shows that the data of input are the data of heading message file, then treatment scheme turns back to step S31, be the judgement of extra-instruction with the instruction that forms about record.If the instruction of record is extra-instruction, then treatment scheme turns back to step S43, in this step, and the processing of the data of CPU21 executive logging heading message file.If the judged result that forms in step S31 shows that recording instruction is not extra-instruction, then on the other hand, treatment scheme turns back to step S44, and in this step, CPU21 carries out this and handles and processing subsequently.

If the judged result that forms in step S32 shows that the data of input are not the data of heading message file, then on the other hand, treatment scheme turns back to step S30, and in this step, CPU21 carries out this and handles and processing subsequently.

If the judged result that forms in step S28 shows that volume_write_protect_level has 6 values, then treatment scheme proceeds to S33, and in this step, whether the data that CPU21 forms about being recorded are stream information file or piece group message file.If the judged result that forms at step S33 shows that the data of input are not the data of stream information file or piece group message file, then treatment scheme turns back to step S32, and in this step, CPU21 carries out it and handles and processing subsequently.If the judged result that forms at step S33 shows that the data of input are the data of stream information file or piece group message file, on the other hand, treatment scheme turns back to step S31, and in this step, CPU21 carries out it and handles and processing subsequently.

If the judged result that forms in step S28 shows that volume_write_protect_level does not have 6 values, then on the other hand, treatment scheme proceeds to step S29, in this step, and error process.

Figure 42 shows the relation in the middle of the above-mentioned volume write protection level.The relation of being showed can be regarded as in the figure, and at each level, the information in level itself and inner level can be modified or rewrite.But, can not revise the data of outside level

Write_protect () so far has been described.In flags_for_title and flags_for_program, also write down the similar information of relevant write protection, and carry out similar write protection and handle.

It should be noted; according to be arranged on logic that prevention on CD 1 shell writes indenture with write_protect (), the flags_for_title of the relevant VOLUME.TOC of being recorded in and the message segment of the write protection among the flags_for_program, implement to stop the control of write operation.That is to say, although just indenture bone (bone) and message segment indication prevention write operation also can not be carried out write operation.

Application of the present invention for compact disk equipment so far has been described.It should be noted that the present invention also can be applicable to the operation by other recording mediums and playback information.

It should be noted that the display media of the demonstration computer program of implementing as the user is carried out above-mentioned processing except that disk CD-ROM and recording medium such as solid-state memory, also can use communication medium such as network and satellite.

As mentioned above, according to recording unit as claimed in claim 1, the display media of recording method as claimed in claim 4 and claim 5 according to the rules result who specifies the addition record operation that whether stops data, is implemented data recording is controlled to the operation on the recording medium.Like this, even stop the rewriting recording operation also can allow the addition record operation.As a result, avoid data deleted accidentally and by preventing that the recording operation mistake from carrying out by carrying out the recording operation that new data is appended to the recording medium clear area, the posting field of service recorder medium effectively.

According to recording medium as claimed in claim 6, the information that record is additional, recording medium can be used effectively with the mistake deletion that can avoid data becomes possibility.

Claims (6)

1. recording unit comprises:

The addition record specified device is specified the recording operation that whether allows data are appended to recording medium;

The catalogue judgment means forms judgement on the catalogue by described addition record specified device indication; With

Control device, according to the judged result that is formed by described catalogue judgment means, control is the operation of data recording on the described recording medium.

2. according to the equipment of claim 1, it is characterized in that, described equipment further has record prevention/permission specified device, it is to stop or allow the operation of data recording on the described recording medium that every kind of data type is specified, and in the scope of utilizing the appointment of described record prevention/permission specified device, it is to stop or the operation of permission addition record that described addition record specified device is specified.

3. according to the equipment of claim 1, it is characterized in that described control device comprises such device,, form about whether allowing the judgement of addition record operation according to specifying the information whether allow the data of record are appended to the operation on the described recording medium.

4. recording method comprises:

The addition record given step is specified the recording operation that whether allows data are appended to recording medium;

The catalogue determining step forms judgement on the catalogue of indicating in by described addition record given step: and controlled step, according to the judged result that is formed by described catalogue determining step, control is the operation of data recording on the described recording medium.

5. a display media shows the program of carrying out by the recording unit of implementing to handle, and comprising:

The addition record given step is specified the recording operation that whether allows data are appended to recording medium;

The catalogue determining step forms judgement on the catalogue of indicating in by described addition record given step; With

Controlled step, according to the judged result that is formed by described catalogue determining step, control is the operation of data recording on the described recording medium.

6. recording medium, with its record and replay data, described medium comprise the bookkeeping information of record, this information indicates whether to allow data are appended to the recording operation of described medium.

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