JP4012929B2 - Information recording method and information recording apparatus - Google Patents

Description

  In the present invention, the present invention is continuously added to old recording information recorded in advance on a write-once information recording medium such as a high-density optical disk represented by a DVD-R (DVD-Recordable) that can be recorded only once. The present invention belongs to the technical field of an information recording method and apparatus for additionally recording recording information.

  In general, in a recordable information recording medium that can be recorded only once, when the new recording information is overwritten later in the area where the old recording information is once recorded, both the old recording information and the new recording information are destroyed. It will be.

  Therefore, in the information recording method and apparatus for additionally recording new record information on this type of write-once information recording medium, when recording new record information in succession to the old record information, conventionally, the old record information and In a continuous area with new recording information, a continuous area corresponding to an amount of information corresponding to an error correction unit such as an ECC (Error Correcting Code) block in error correction processing used in the old recording information or the new recording information For example, meaningless dummy information or a predetermined RF (Radio Frequency) signal is recorded in the last part of the old recording information and the first part of the new recording information corresponding to the continuous area, Recording of the new recording information was started.

  The reason for providing this continuous area is that if the continuous area is not provided when the newly recorded information and the old recorded information recorded later are continuously reproduced, the recording area of the old recorded information and the recording of the new recorded information are recorded. This is because each RF signal may become discontinuous at the boundary with the region, and in this case, the focus servo and tracking servo at the time of reproduction may become unstable.

  In addition, the reason why a continuous area for one ECC block is provided and meaningless dummy information or the like is recorded therein is that error correction is performed for each error correction unit in the conventional error correction processing, When new record information is recorded from the middle of the error correction unit, when the old record information and the new record information are continuously reproduced after the new record information is recorded, the beginning of the new record information in the error correction unit is recorded. This is because correct error correction is not performed, and therefore accurate continuous reproduction cannot be performed. In this respect, if it is determined beforehand that dummy information or a predetermined RF signal that is meaningless in the continuous area as described above is recorded for one ECC block, the old recording information and the new recording information are recorded in the continuous area. Even if both are destroyed due to overlapping, the information recorded in the part is meaningless dummy information or a predetermined RF signal. By reproducing the new recording information from the ECC block, the old recording information and the new recording information can be reproduced.

  Furthermore, another reason for providing the continuous area is that if new record information is recorded continuously to the old record information without providing the continuous area, both of the old record information and the new record information are destroyed. This is because if the destruction range at that time exceeds the error correction unit, the destroyed record information may not be repaired.

  However, the conventional error correction unit has a capacity of about 32 KB, for example, and this area is filled with information irrelevant to reproduction. Therefore, the high-density disk that needs to record a large amount of information. However, there is a problem that the recording area on the information recording medium cannot be used effectively.

  Therefore, the present invention has been made in view of the above problems, and the problem is that new recording information can be additionally recorded while effectively using the recording area of the information recording medium, and the old recording information and the new recording information can be recorded. An object of the present invention is to provide an information recording method and apparatus capable of accurately performing continuous reproduction of recorded information.

  In order to solve the above-described problem, the invention described in claim 1 is an information recording apparatus for recording record information on a recording medium in units of error correction blocks including a plurality of first record units, wherein the record information is recorded on the record medium. Conversion means for converting into error correction block units, recording means for recording recording information output from the conversion means on a recording medium, and control means for controlling stop and start of recording processing of the recording means, The control means stops the recording process within the first first recording unit of the error correction block when stopping the recording process, and stops the recording process when starting the recording process The recording process is started from the inside.

According to a fourth aspect of the present invention, there is provided an information recording method for recording recorded information on a recording medium in units of error correction blocks comprising a plurality of first recording units, wherein the converting step converts the recorded information into units of error correction blocks And a recording step for recording the converted recording information on a recording medium, and a control step for controlling the stop and start of the recording process in the recording step. In the control step, when stopping the recording process Is characterized in that the recording process is stopped within the first first recording unit of the error correction block, and when the recording process is started, the recording process is started from within the first recording unit where the recording process is stopped. To do.

  Next, preferred embodiments of the present invention will be described with reference to the drawings. In the following embodiment, an embodiment in which the present invention is applied to an information recording apparatus for recording information on the DVD-R will be described.

(I) Embodiment of Recording Format First, a general physical format when recording information is recorded on a DVD-R and error correction processing in the recording information will be described with reference to FIGS.

  First, an error correction process in the DVD-R of this embodiment and an ECC block as an error correction unit in the error correction process will be described with reference to FIG.

  In general, the recording information recorded on the DVD-R has a physical structure including a plurality of data sectors 20 shown in FIG. In one data sector 20, from the head, ID information 21 indicating the start position of the data sector 20 and an ID information error correction code (IEC (ID Data Error Error Code) for correcting an error in the ID information 21 are included. correction Code))) 22, preliminary data 23, data 24 which is the main data to be recorded, and error detection code (EDC (Error Detection Code)) 25 for detecting errors in data 24. Recording information to be recorded is constituted by a plurality of continuous data sectors 20.

  Next, processing when an ECC block is configured using the data sector 20 will be described with reference to FIG.

  When configuring an ECC block using data sectors 20, as shown in FIG. 1B, first, one data sector 20 is divided into 172 bytes, and each divided data ( Hereinafter, the data blocks 33 are arranged in the vertical direction (see FIG. 1B-1). At this time, 12 rows of data blocks 33 are arranged in the vertical direction.

  Then, a 10-byte ECC code (PI (Pality In) code) 31 is added to the end of the data block 33 for each data block 33 arranged in the vertical direction to form one correction block 34 ( (Refer FIG.1 (b) -2). At this stage, the correction blocks 34 to which the ECC code 31 is added are arranged in 12 rows in the vertical direction. Thereafter, this process is repeated for 16 data sectors 20 minutes. As a result, a correction block 34 of 192 rows is obtained.

  Next, with the correction blocks 34 of the 192 rows arranged in the vertical direction, the correction block 34 of the 192 rows is divided in the vertical direction from the beginning for each byte, and each divided data is divided. On the other hand, 16 ECC outer codes (PO (Pality Out) codes) 32 are added. Note that the ECC outer code 32 is also added to the portion of the ECC code 31 in the correction block 34.

Through the above processing, one ECC block 30 including 16 data sectors 20 is formed as shown in FIG. At this time, the total amount of information included in one ECC block 30 is
(172 + 10) bytes × (192 + 16) rows = 37856 bytes, of which the actual data 24 is
It becomes 2048 bytes × 16 = 32768 bytes.

  In the ECC block 30 shown in FIG. 1B-2, 1-byte data is indicated by “D #. *”. For example, “D1.0” indicates 1-byte data arranged in the first row and 0th column, and “D190.170” indicates 1-byte data arranged in the 190th row and 170th column. Show. Accordingly, the ECC inner code 31 is arranged in the 172nd to 181st columns, and the ECC outer code 32 is arranged in the 192nd to 207th rows.

  Further, one correction block 34 is continuously recorded on the DVD-R.

  Here, as shown in FIG. 1 (b) -2, the ECC block 30 is configured to include both the ECC inner code 31 and the ECC outer code 32 in the horizontal direction in FIG. 1 (b) -2. This is because correction of the arranged data is performed by the ECC inner code 31 and correction of the data arranged in the vertical direction in FIG. That is, in the ECC block 30 shown in FIG. 1B-2, it is possible to perform error correction in the horizontal and vertical directions, and error correction used in a conventional CD (Compact Disk) or the like. It is configured to perform error correction more powerfully than processing.

  More specifically, for example, one correction block 34 (including a total of 182 bytes of data including the ECC code 31 for one row, as described above, is continuously recorded on the DVD-R. Even if all of them are destroyed by a scratch on the DVD-R, when viewed from the vertical direction, only one byte of data is destroyed for one ECC outer code 32. Therefore, if error correction is performed using the ECC outer code 32 of each column, even if all of one correction block 34 is destroyed, correct error correction can be performed and reproduction can be performed accurately.

  Next, how the data sector 20 configured in the ECC block 30 shown in FIG. 1B-2 is specifically recorded on the DVD-R will be described with reference to FIG. In FIG. 2, data indicated by “D #. *” Corresponds to the data described in FIG.

  When the ECC block 30 is recorded on the DVD-R, first, as shown in the uppermost stage of FIG. 2, the ECC block 30 is arranged in a row in the horizontal direction for each correction block 34, thereby interleaving. Are divided into recording sectors 40. At this time, one recording sector 40 includes 2366 bytes (37856 bytes ÷ 16) of information, and in this, the data sector 20 and the ECC inner code 31 or the ECC outer code 32 are mixed. However, ID information 21 (see FIG. 1A) in the data sector 20 is arranged at the head of each recording sector 40.

One recording sector 40 is divided into data 41 for every 91 bytes, and a header H is added to each. Thereafter, the recording sector 40 in this state is subjected to 8-16 modulation, whereby one sync frame 42 is formed for each data 41. At this time, one sync frame 42 includes a header H ′ and data 43. The amount of information in one sync frame 42 is
91 bytes × 8 × (16/8) = 1456 bytes, and information is written to the DVD-R 1 in a form in which the sync frames 42 are continuous. At this time, one recording sector 40 includes 26 sync frames 42.

  By configuring the physical format described above and recording information on the DVD-R, when reproducing the information, if 8-16 demodulation and deinterleaving are performed (see FIG. 2), the original ECC block 30 is changed. The information can be restored, and information can be accurately reproduced by performing strong error correction as described above.

(II) Embodiment of Information Recording Apparatus Next, an embodiment of an information recording apparatus according to the present invention for recording information on a DVD-R 1 in the physical format described with reference to FIGS. This will be described with reference to FIGS. In the following embodiment, in the DVD-R1, prepits in which address information on the DVD-R1 is recorded are formed in advance on an information track on which the recording information is to be recorded. In some cases, the address information on the DVD-R1 is obtained by detecting the prepits in advance, and the recording position on the DVD-R1 where the recording information is recorded is detected and recorded.

  First, the configuration of the information recording apparatus according to the present invention will be described with reference to FIG.

  As shown in FIG. 3, the information recording apparatus S of the embodiment includes a pickup 2, a reproduction amplifier 3, a decoder 4, a pre-pit signal decoder 5, a spindle motor 6, a servo circuit 7, a processor 8, and an encoder. 9, a switch 10, a power control circuit 11, and a laser drive circuit 12.

  Next, the overall operation will be described.

The pickup 2 includes a laser diode (not shown), a deflecting beam splitter, an objective lens, a photodetector, and the like. The pickup 2 irradiates the information recording surface of the DVD-R 1 with the light beam B based on the laser drive signal _SDL and applies the reflected light to the reflected light. Based on the pre-pit detection and recording the recording information to be recorded, and if there is already recorded old recording information, the old recording already recorded based on the reflected light of the light beam B Detect information.

The reproduction amplifier 3 amplifies a detection signal S _DT containing information corresponding to the old record information that is pre-pit or already recorded output from the pickup 2, and outputs a pre-pit signal S _PP corresponding to the pre-pit, already outputs the amplified signal S _P corresponding to the old record information recorded.

Thereafter, the decoder 4 decodes the amplified signal S _P by performing 8-16 demodulation and deinterleaving on the amplified signal S _P, and outputs a demodulated signal S _DM and a servo demodulated signal S _SD.

On the other hand, the pre-pit signal decoder 5 outputs a demodulated pre-pit signal S _PD decodes the pre-pit signal S _PP.

Then, the servo circuit 7, the rotation based on the demodulated pre-pit signal S _PD and the servo demodulated signal S _SD, and outputs a pickup servo signal S _SP for the focus servo control and tracking servo control in the pickup 2, the DVD-R1 the rotation of the spindle motor 6 for causing outputs a spindle servo signal S _SS for servo control.

Along with these, the processor 8, the record information signal S _R and outputs the temporarily stored corresponding to the recording information to be recorded which is input from outside, was recorded on the basis of the demodulated signal S _DM outputs a reproduction signal S _OT corresponding to the old record information to the external, and further outputs a switching signal S _SW to be described later on the basis of the demodulated pre-pit signal S _PD.

Then, the encoder 9 is adapted to constitute an ECC block 30 by adding an ECC inner code 31 and the ECC out-code 32 to the recording information signal S _R, subjected to interleaving and 8-16 modulation to the ECC block 30 The encode signal _SRE is output.

At this time, switch 10 switches the encoded signal S _RE and ground signals as an output signal S _PC.

Then, the power control circuit 11 outputs a drive signal S _D for controlling the output of the laser diode (not shown) in the pickup 3 based on the output signal S _PC.

Thereafter, the laser drive circuit 12 outputs a laser drive signal _SDL for actually driving the laser diode and emitting the light beam B based on the drive signal _SD .

The above information recording apparatus S is also possible to reproduce the information recorded on the DVD-R1, At this time, the reproduction signal S _OT through the processor 8 on the basis of the demodulated signal S _DM It will be output to the outside.

  Next, the operation at the end of recording of recording information and the operation at the start of additional recording of new recording information according to the present invention will be described with reference to FIGS.

(III) First Embodiment of Information Recording Operation First, a first embodiment of a recording information recording operation corresponding to the present invention will be described with reference to FIGS.

  In the information recording operation of the first embodiment, old dummy information (hereinafter referred to as old dummy data) 44 having an information amount corresponding to the second sync frame 42 at the end of recording of old recorded information (hereinafter referred to as old data). Is recorded with the ID information 21 at the head following the old data. At the start of additional recording of new recording information (hereinafter referred to as new data), first, the old dummy data is recorded in an area corresponding to the second sync frame 42 in the area where the old dummy data 44 is recorded. New dummy information (hereinafter referred to as new dummy data) 45 having the same contents as the data 44 is recorded. At this time, the total of the area recorded after the additional recording of the new dummy data 45 and the area recorded with the new dummy data 45 in the area where the old dummy data 44 is recorded is an area corresponding to one recording sector 40. Thus, the recording amount of the new dummy data 45 is set. Thereafter, new data to be originally recorded is recorded following the new dummy data 45.

  FIG. 4 is a flowchart showing a process that combines the process at the end of recording and the process at the start of recording in the first embodiment of the information recording operation, and FIG. 5 shows the first embodiment of the information recording operation. The DVD-R1 before and after new data is additionally recorded depending on the form is shown.

  4 and 5, it is assumed that among the old data, the address corresponding to the head ID information 21 of the recording sector 40 in which the last old data is recorded is the N address, followed by the old dummy. It is assumed that the address corresponding to the head ID information 21 of the recording sector 40 in which the data 44 is recorded is (N + 1) address.

In the first embodiment of the information recording operation, as shown in FIG. 4, when additional recording of new data is started, first of the old data, the recording sector 40 in which the last old data is recorded is recorded. In order to search the head ID information 21, the address N corresponding to the ID information 21 is searched (step S1). This operation is executed in the processor 8 based on the demodulated signal _SDM from the decoder 4.

When the ID information 21 corresponding to the N address is detected, the old data recorded in the recording sector 40 subsequent to the ID information 21 corresponding to the N address is detected (step S2). Whether the ID information 21 corresponding to the address (N + 1) is detected is determined by the processor 8 based on the demodulated signal _SDM from the decoder 4 (step S3). When the ID information 21 corresponding to the address (N + 1) is not detected (step S3; NO), the detection of the old data is continued until it is detected, and when it is detected (step S3; YES), next, from the processor 8 ( 1 recording sector-1 sync frame)
The new dummy data 45 (for example, “0000...”) Having the information amount corresponding to is output to the encoder 9 and temporarily stored. Then, encoded in the encoder 9 outputs the record information signal S _R corresponding to the new record information to be additionally recorded in subsequent to the new dummy data 45 temporarily stores (step S4).

  At this time, in the new data, one ECC block 30 may be formed including the new dummy data 45, or one ECC block 30 from the end position of the new dummy data is configured (that is, the new data). The ECC block 30 may be configured only with data).

Next, old dummy data 44 (for example, “0000...”) Recorded subsequent to the ID information 21 corresponding to the address (N + 1) is detected, and the head of each sync frame 42 is detected. By detecting the header H based on the demodulated signal _SDM from the decoder 4, it is determined whether or not an area corresponding to the second sync frame 42 is detected among the areas where the old dummy data 44 is recorded. The processor 8 determines (step S5). If the area corresponding to the second sync frame 42 is not detected (step S5; NO), the detection of the old dummy data 44 is continued until it is detected. If it is detected (step S5; YES), the processor 8 of based on the switch signal S _SW switched to the terminal a of the switch 11, it takes out the new data temporarily recorded following the new dummy data 45 and it had the encoder 9 as an encoding signal S _RE, an output signal S from the switch 10 _It outputs as _PC (step S6). As a result, new dummy data 45 and subsequent new data are recorded on the DVD-R 1 by the light beam B from the pickup 2. As shown in FIG. 5, the power of the light beam B at this time is constant reproduction power until the switch 10 is switched to the A terminal side, and after the switch 10 is switched to the A terminal side (old dummy data). among areas 44 are recorded, since the corresponding position at the head of the second-sync frame 42) includes a recording power corresponding to the new data the new dummy data 45 and subsequent included in the output signal S _PC Playback power will be switched. The reason why the light beam B is continuously emitted as the reproduction power even when data is not recorded is that the reflected light for tracking servo control is required to track the information track on the DVD-R1 even when data is not recorded. It is.

  In step S6, when the new dummy data 45 and the new data are recorded by switching the switch 10 to the A terminal side, it is next determined in the processor 8 whether or not the new data from the encoder 9 has been completed. (Step S7). If not completed (step S7; NO), the recording of new data is continued as it is. If completed (step S7; YES), the second sync frame 42 is then processed as the end of recording. Dummy data (for example, “0000...”) Corresponding to the information amount is recorded from the encoder 9 following the new data that has been recorded (step S8). When finished, the switch 10 is switched to the B terminal side (ground side), the power of the light beam B is set to the reproduction power (step S9), and the new data additional recording process is finished.

  By the process shown in FIG. 4 described above, new data is recorded following the new dummy data 45 as shown in FIG. 5 at the start of additional recording of new data, and recording is completed at the end of recording of new data. Subsequent to the new data (corresponding to the old data in FIG. 5), the dummy data is recorded by the amount of information corresponding to the two sync frames 42, and the process ends. By repeating this process, additional recording of the recording information is performed. In this case, the state of the DVD-R1 in the continuous area of the old data and new data in the additional recording is as shown at the bottom of FIG. Dummy data (“0000...”) Having an information amount corresponding to one recording sector 40 is recorded. Here, in the portion where the old dummy data 44 and the new dummy data 45 overlap (the amount of information corresponding to one sync frame 42, shown as data destruction area D in FIG. 5), both data are overwritten. Data may be destroyed, but at this time, when the old data and the new data are continuously played back later, the dummy data at the boundary between the old data and the new data may be "0000 ..." Since it is known in advance, even if the data destruction area D exists, if the data detected from the data destruction area D is replaced with “0000...”, Error correction at the time of continuous reproduction will be affected. No continuous reproduction (without reducing the error correction capability during continuous reproduction).

  Further, since the continuous area in which dummy data is recorded only needs to correspond to one recording sector 40, the DVD-R1 recording area is more effective than the case where a continuous area corresponding to one ECC block 30 is provided. More recording information can be recorded.

  Furthermore, since the ID information 21 (corresponding to the address (N + 1)) corresponding to the recording sector 40 in the area where the old data and the new data are connected is not destroyed, the continuous playback is accurately performed during the continuous playback. can do.

(IV) Second Embodiment of Information Recording Operation Next, a second embodiment of the recording information recording operation corresponding to the present invention will be described with reference to FIGS.

  In the information recording operation of the second embodiment, at the end of recording, as in the first embodiment, old dummy data 44 having an information amount corresponding to two sync frames 42 is recorded in the recorded information at the end of recording old data. Subsequently, the ID information 21 is recorded as the head.

  On the other hand, at the start of additional recording of new data, recording is started from new data after the new data corresponding to one sync frame 42 is removed from the beginning of the new data.

  FIG. 5 is a flowchart showing a process in which the process at the end of recording and the process at the start of recording are combined into one in the second embodiment of the information recording operation, and FIG. 7 is a second embodiment of the information recording operation. It shows the DVD-R1 before and after new data is additionally recorded depending on the form.

  In FIGS. 6 and 7, it is assumed that the address corresponding to the head ID information 21 of the recording sector 40 in which the last old data is recorded among the old data is the N address, and subsequently the old dummy It is assumed that the address corresponding to the head ID information 21 of the recording sector 40 in which the data 44 is recorded is (N + 1) address. Further, operations similar to those in the first embodiment of the information recording operation shown in FIG. 4 are denoted by the same step numbers, and detailed description thereof is omitted.

  In the second embodiment of the information recording operation, as shown in FIG. 6, when additional recording of new data is started, operations similar to those in steps S1 to S3 shown in FIG. The head ID information 21 in the area where the data 44 is recorded is detected.

When the ID information 21 corresponding to address (N + 1) is detected (step S3; YES), the recording information signal corresponding to the new recording information to be additionally recorded without inserting dummy data from the processor 8 next. S _R is output, encoded by the encoder 9, and temporarily stored (step S10).

  After that, the same operations as in steps S5 to S9 shown in FIG. 4 are performed, and new data (new data of the new data is started from the position corresponding to the second sync frame 42 in the area where the old dummy data 44 is recorded. New data after the new data corresponding to the first sync frame 42 is removed), dummy data having an information amount corresponding to the second sync frame 42 is recorded, and the recording of the new data is completed. To do.

As shown in FIG. 7, the power of the light beam B at this time is constant reproduction power until the switch 10 is switched to the A terminal side, and after the switch 10 is switched to the A terminal side (old dummy). in the region where the data 44 is recorded, since the corresponding position at the head of the second-sync frame 42), that switches the recording power and reproducing power in response to the new data contained in the output signal S _PC It becomes.

  By the process shown in FIG. 6 described above, when new data starts to be added, the new data is recorded from the new data after excluding the new data corresponding to the first sync frame 42 as shown in FIG. Furthermore, at the end of the recording of the new data, the dummy data is recorded by the amount of information corresponding to the two sync frames 42 following the new data that has been recorded (corresponding to the old data in FIG. 7). It will end. By repeating this process, additional recording of the recording information is performed. In this case, the state of the DVD-R1 in the continuous area of the old data and new data in the additional recording is as shown in the bottom of FIG. In the portion corresponding to the first two sync frames 42 of the new data, data different from the new data is recorded. That is, old dummy data 44 is recorded in a portion corresponding to one sync frame 42, and a subsequent portion corresponding to one sync frame 42 is a data destruction area D.

  However, considering the case where the old data and the new data are continuously reproduced, the ECC blocks of the old data and the new data both have the structure of the ECC block 30 shown in FIG. The amount of data to be processed corresponds to one correction block 34 in the ECC block 30. Therefore, as described in the description of the ECC block 30, according to the structure of the ECC block 30 that includes the ECC code 31 and the ECC outer code 32 and performs error correction twice in the vertical direction and the horizontal direction, Even if all of the correction blocks 34 are destroyed, when viewed from the vertical direction, since only one byte of data is destroyed for one ECC outer code 32, the ECC outer code 32 of each column is used. If the error correction is performed, the error can be correctly corrected and reproduced accurately.

  Therefore, continuous reproduction can be performed with little effect on error correction during the continuous reproduction.

  Further, the total of the area where the dummy data is recorded and the data destruction area D is only the area corresponding to the two sync frames 42, and the area corresponding to the two sync frames 42 is almost used for error correction in continuous reproduction. Since there is no effect, continuous playback can be performed without providing a continuous area of old data and new data (a wasteful area for continuous playback of old data and new data). More recording information can be recorded by using the recording area of the DVD-R 1 more effectively than the case of providing a continuous area corresponding to one ECC block 30 or the case of the first embodiment.

  Furthermore, since the ID information 21 (corresponding to the address (N + 1)) corresponding to the recording sector 40 of the old data and new data is not destroyed, accurate continuous reproduction is performed during the continuous reproduction. be able to.

It is a figure which shows the structure of the ECC block in the recording information of embodiment, (a) is a figure which shows the data structure of recording information, (b) is a figure which shows the correction of an ECC block. It is a figure which shows the physical format of the recording information of embodiment. It is a block diagram which shows schematic structure of an information recording device. It is a flowchart which shows the process of 1st Embodiment of information recording operation | movement. It is a figure explaining recording of recording information by processing of a 1st embodiment of information recording operation. It is a flowchart which shows the process of 2nd Embodiment of information recording operation | movement. It is a figure explaining recording of recording information by processing of a 2nd embodiment of information recording operation.

Explanation of symbols

1 DVD-R
2 Pickup 3 Reproduction amplifier 4 Decoder 5 Pre-pit signal decoder 6 Spindle motor 7 Servo circuit 8 Processor 9 Encoder 10 Switch 11 Power control circuit 12 Laser drive circuit 20 Data sector 21 ID information 22 ID information error correction code 23 Preliminary data 24, 41, 43 Data 25 Error detection code 30 ECC block 31 ECC code 32 ECC outside code 33 Data block 34 Correction block 40 Recording sector 42 Sync frame 44 Old dummy data 45 New dummy data B Light beams H and H 'Header D Data destruction area S _R recording information signal S _SW switch signal S _RE encode signal S _PC output signal S _D drive signal S _DL laser drive signal S _DT detection signal S _OT reproduced signal S _P amplified signal S _PP pre-pit signal S _DM Tone signal S _SD servo demodulated signal S _PD demodulation pre-pit signal S _SP pickup servo signal S _SS spindle servo signal

Claims (6)

An information recording apparatus for recording recording information on a recording medium in units of error correction blocks composed of a plurality of first recording units,
Converting means for converting the recorded information into error correction block units;
Recording means for recording the recording information output from the converting means on a recording medium;
Control means for controlling the stop and start of the recording process of the recording means;
With
The control means stops the recording process within the first first recording unit of the error correction block when stopping the recording process, and stops the recording process when starting the recording process. An information recording apparatus characterized by starting a recording process from within.   The control means, when starting the recording process, controls the recording means to start the recording process from a position within a range of error correction capability with respect to the stop position where the recording process is stopped. The information recording apparatus according to 1. The information according to claim 1 , wherein identification information is provided at a head of the first recording unit , and the control unit performs control so that the stop position is positioned at least behind the identification information. Recording device. An information recording method for recording recording information on a recording medium in error correction block units composed of a plurality of first recording units,
  A conversion step of converting the recording information into error correction block units;
  A recording step of recording the converted recording information on a recording medium;
  A control step for controlling the stop and start of the recording process in the recording step;
  With
  In the control step, when the recording process is stopped, the recording process is stopped within the first first recording unit of the error correction block, and when the recording process is started, the recording process is stopped. An information recording method, wherein recording processing is started from within a unit. 5. The control process according to claim 4 , wherein when the recording process is started, the recording process is controlled to start from a position within a range of error correction capability with respect to a stop position where the recording process is stopped. Information recording method described in 1 . 5. The control unit according to claim 4 , wherein identification information is provided at a head of the first recording unit, and control is performed so that the stop position is positioned at least behind the identification information in the control step. Information recording method.

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