MXPA97000855A - Apparatus and method of data production deregistro, apparatus and demand record method and medium of regis - Google Patents

Abstract

The present invention relates to an apparatus for producing registration data for producing data to be recorded in a recording medium to be reproduced by a reproduction apparatus, comprising: a storage medium for storing a buffer capacity of the reproduction apparatus for storing the data, input / output rates to and from the buffer, a speed in the track skip of a pickup device of the playback apparatus when the data is reproduced from the recording medium, and a time of latency of the recording medium and information regarding the processing time of an ECC, and a separation means for sectioning the data in response to storage of the storage medium so that the reproduction apparatus can reproduce the data in an order different from an order in which the data is recorded in the registry medium

Description

"DEVICE AND METHOD OF PRODUCTION OF RECORD DATA, APPARATUS AND METHOD OF REPRODUCTION OF RECORD MEDIUM AND MEANS OF REGISTRATION " BACKGROUND OF THE INVENTION This invention relates to an apparatus and method of producing registration data, an apparatus and method of reproducing recording medium and recording means, and more particularly, to an apparatus and method of producing registration data, an apparatus and method of reproducing recording medium and recording medium while allowing separate data in a plurality of sections to be reproduced in a different order. An encoder as a recording data production apparatus that produces data to be recorded in a recording medium, typically has a construction as shown in Figure 16. Referring to Figure 16, a storage apparatus 10 stores the video data that will be recorded in a recording medium, such as an optical disc 20. The video data is read from the storage apparatus 10 and is supported in a video encoder 11, whereby the video data is encoded in accordance with the MPEG2 video standards. Meanwhile, the audio data to be recorded in a recording medium is stored in another storage device 13. The audio data is read from the storage apparatus 13 and is supplied to an audio encoder 14, whereby the audio data is encoded in accordance with the MPEG audio standards. A multiplexer 12 multiplexes the video data admitted thereto from the video encoder 11, and the audio data admitted thereto from the audio encoder 14, and outputs the multiplexed data. A sector unit 16 divides the multiplexed data admitted thereto from the multiplexer 12 into data units of 2048 bytes in sectors, adds sector addresses to the sectors and outputs the sectors to an ECC encoder 17. The ECC encoder 17 collects the data in units of a sector supplied thereto from the sector unit 16 for 16 sectors to form an ECC block, adds redundancy data (ECC) for error correction to the ECC block and outputs the ECC block towards a modulator 18. The modulator 18 modulates the data admitted thereto from the ECC encoder 17 and outputs them to a cutting machine 19. The cutting machine 19 cuts an optical disk 20 in accordance with the data admitted thereto.

During operation, the video data previously stored in the storage apparatus 10 is admitted to the video encoder 11, whereby they are encoded in accordance with the MPEG2 video standards. In particular, the video data undergo DCT processing (discrete cosine transformation), quantization processing, VLC processing (variable length coding) and other necessary processing and then are sent to multiplexer 12. Meanwhile, the data of previously stored audio in the storage apparatus 13 are allowed in the divided encoder 14, whereby they are encoded in accordance with the MPEG audio standards. In particular, the audio data undergoes DCT processing, quantization processing, VLC processing and other necessary processing and then are admitted to the multiplexer 12. The multiplexer 12 multiplexes by time division the video data admitted thereto from the encoder 11. of video, and the audio data admitted thereto from the audio encoder 14 in accordance with the MPEG2 system standards, in order to produce data in the form of a multiplexed stream. The data sent from the multiplexer 12 are admitted to the sector unit 16, whereby they are divided into sectors each including data of 2048 bytes and a sector address is added to each of the sectors. The resulting sectors are admitted to the ECC encoder 17. The ECC encoder 17 adds redundancy data for error correction to the data admitted thereto and sends the resulting data to the modulator 18. The modulator 18 modulates the data admitted therein of the ECC encoder. 17 and supplies the modulated data to the cutting machine 19. The cutting machine 19 modulates the light to be irradiated on the optical disk 20, in accordance with the data admitted thereto from the modulator 18, to register the data in the optical disk 20. Then, the optical disk 20 is revealed and a stamp is produced using the optical disk 20 as an original disk. Then, a large number of duplicate discs of the stamp are produced. Figure 17 shows a typical construction of an optical disc apparatus for reproducing a duplicate disc produced in this way. Referring to Figure 17, a pickup device 51 radiates a laser beam onto an optical disk (duplicate disk) 50 and reproduces the data recorded on the optical disk 50 from the light reflected from the optical disk 50. Consequently, a reproduction signal in the form of a radio frequency (RF) signal is sent from the pick-up device 51 and is admitted in a demodulation circuit 52, whereby it is demodulated. The demodulation circuit 52 sends a demodulation output to a sector detection circuit 53 and to the ECC circuit 56. The sector detection circuit 53 detects a sector direction from within the demodulation output admitted thereto from the circuit 52 of demodulation, and sends the detected sector address to a control circuit 54 that may be formed from a microcomputer or the like. The control circuit 54 receives a status signal designating a stored amount of a ring buffer 57. The control circuit 54 appropriately controls a tracking servo circuit 55 in response to an output of the sector detection circuit 53 and an output of the ring buffer 57 so that the pickup device 51 can be powered up to a predetermined position of the disk 50 optical. An admission section 61 is manually operated in order to admit a predetermined instruction to the control circuit 54. The ECC circuit 56 performs an error correction processing of the demodulation output admitted thereto from the demodulation circuit 52 and sends the resulting data to the ring buffer 56. The ring buffer 57 temporarily stores the data admitted thereto from the ECC circuit 56 and sends a status signal designating a stored amount of data therein to the control circuit 54. A demultiplexer 58 demultiplexes the data read from the ring buffer 57 in accordance with the MPEG system standards and sends the audio data to an audio decoder 59, while sending the video data to a video decoder 60. The audio decoder 59 decodes (i.e., performs inverse VLC processing, dequantization processing, inverse DCT processing and so on) the audio data admitted thereto in accordance with the MPEG audio standards and sends the resulting data to a loudspeaker or a similar device not illustrated. Meanwhile, the video decoder 60 decodes (i.e., performs inverse VLC processing, dequantization processing, inverse DCT processing and so on), the video data admitted thereto in accordance with the standards of video MPEG2, and send the resulting data to a monitor device, not illustrated. During operation, the training device 51 irradiates a laser beam on the optical disk 50 and reproduces the data recorded on the optical disk 50 from the reflected light of the laser beam from the optical disk 50. A reproduction signal sent from the pick-up device 51 is to admit the demodulation circuit 52, whereby it is demodulated. The data demodulated by the demodulation circuit 52 is admitted to the sector detection circuit 53, whereby a sector address is detected. The control circuit 54 discriminates a current position of the pickup device 51 from the sector direction supplied thereto from the sector detection circuit 53 and controls, when the current position is not the desired position, in follow-up servo circuit 55 so that the pick-up device 51 is fed to a predetermined sector address position. Consequently, the data recorded in the predetermined position of the optical disk 50 is reproduced by the pick-up device 51. The data sent from the demodulation circuit 52 are admitted in the ECC circuit 56 whereby both detection and correction are carried out. of errors thereof, and the resulting data of the ECC circuit 56 are admitted and stored in the ring buffer 57. The data stored in the ring buffer 67 is read from it and is admitted to the demultiplexer 58. The demultiplexer 58 demultiplexes the data admitted thereto into audio data and video data, and sends the audio data to the decoder 59 of audio and sends the video data to the video decoder 60. The audio decoder 59 decodes the audio data admitted to it and sends the resulting data to the speaker not illustrated. Meanwhile, the video decoder 60 decodes the video data admitted thereto and sends the resulting data to the monitor apparatus, not illustrated. Each audio decoder 59 and video decoder 60 sends a code request signal to the control circuit 54 when the decoding processing thereof is completed. The control circuit 54 controls the ring buffer 57 in response to the code request signals to read the data stored in the ring buffer 57 and sends the data read in this way to the audio decoder 59 and the decoder 60. of video through the demultiplexer 58. The control circuit 54 monitors a status signal admitted thereto from the ring buffer 57 and controls the position of the pickup device 51 through the tracking servo circuit 55 so that the memory 57 Intermediate ring can not produce overflow or undercurrent. The rate of data input to the ring buffer 57 is graded to have a value sufficiently higher than the output rate from the ring buffer 57. The intermediate ring memory 57 has a capacity that at least corresponds to a maximum latency time of the optical disk 50 (where the optical disk 50 is a constant linear velocity disk (CLV), a capacity of a circumference on the circumference external) so that the variable rate data admitted to the ring buffer 57 can be continuously sent at a predetermined output rate. The video data and audio data can be recorded and digitally reproduced to and from the optical disc 50 in a manner as described above. With the system described above, however, the data recorded on the optical disk 50 is successively reproduced in order, and there is an object that must be resolved since, in order to reproduce the data recorded on the optical disk 50 in a different order from In the order in which the data was recorded on the optical disc 50, the input section 61 must be manually operated to designate a playback order each time to the control circuit 54 of the optical disc apparatus. When the video data is recorded, for example, as seen in Figure 18, in the order of blocks A, B, C and D, it is sometimes desirable to reproduce block D by skipping block C, after it is they play block A and block B (play order 1) or successively play block C and block D, skipping block B after block A is played (order 2 of play). It is assumed that, for example, the images of the video data recorded in block C include a certain image that is not preferred by observers of a predetermined age group. In this case, for observers of the age group, it is preferred to carry out the reproduction in order 1 of reproduction so that the images of block C can not be reproduced. In a similar way, in this case, when it is not preferred that the observers of another group of age to enjoy the images of block B, reproduction must be carried out in order 2 of reproduction by skipping block B. When the optical disc 50 is a digital video disc, a paternal regime (ages for which the enjoyment (inhibited)) can be recorded so that predetermined images can not be enjoyed by observers of a predetermined age group in this way. In particular, when the digital video disc is to be reproduced, if an observer manually operates the input section 61 to admit the age of the observer itself, the system may inhibit the reproduction of images that are not preferable for the age group of that age. However, with the system, even when a parental regime that represents that it is not preferred, for example, that block C or B be enjoyed by observers of a predetermined age group can be recorded, since the length of block C or B is an arbitrary length, if the reproduction is carried out by skipping block C or block B as seen in Figure 18, then ring buffer 57 will present a substream. Consequently, the data is not temporarily supplied to the audio decoder 59 or the video decoder 60 and it occurs as a situation in which some images may be lost.

COMPENDIUM OF THE INVENTION An object of the present invention is to provide an apparatus and method of reproducing registration data, an apparatus and method of reproducing recording medium and a method and a recording medium by means of which data interruption can be avoided even when carry out the reproduction of data in a different order of the order in which the data is recorded. In order to achieve the object described above, in accordance with one aspect of the present invention, there is provided an apparatus for producing registration data to produce data to be recorded in a recording medium to be reproduced by a reproduction apparatus. , comprising a storage means for storing a capacity of a buffer of the reproduction apparatus for storing the data, input / output rates to and from the buffer, a speed on the track hopping of a pickup device of the apparatus of reproduction when the data is reproduced from the recording medium, a latency time of the recording medium and a processing time relation information of an ECC and a separation means to section the data in response to storage of the recording media. storage so that the reproduction apparatus can reproduce the data in a different order of order in the which data is recorded in the recording medium.

In accordance with another aspect of the present invention, there is provided a method of producing registration data to produce data to be recorded in a recording medium to be reproduced by a reproduction apparatus, comprising the steps of storing in advance. an ability of a buffer of the reproduction apparatus to store the data, input / output rates to and from the buffer, a speed in the track skip of a pickup device of the playback apparatus when the data is reproduced from the recording means, a latency time of the recording medium and a processing time relation information of an ECC, and separating the data in response to the stored information so that the reproduction apparatus can reproduce the data in a different order from an order in which the data has been registered in the recording medium. In the recording data reproduction apparatus and the method of producing registration data, the data is separated in response to the information stored in such a way that the capacity of the buffer for the reproduction apparatus to store the data, the input / output rates to and from the buffer, the speed at the track hopper of the pickup device when the data is reproduced from a recording medium, the latency time of the recording medium and the time relationship information of the ECC. Consequently, the data may be reproduced in a different order from the order in which the data is recorded in the recording medium, without experiencing any interruption. In accordance with a further aspect of the present invention there is provided an apparatus for producing registration data that separates the data into a plurality of sections and produces the data to be recorded towards a recording medium to be reproduced by a reproduction apparatus of so that the data of the sections can be reproduced by the reproduction apparatus in a different order from the order in which the data is recorded in the recording medium, comprising a first calculation means for calculating a section length necessary for preventing a buffer of the reproduction apparatus for storing the data from being emptied into a range within which a production point is skipped to a next section, a second calculation means for calculating a length of the sections necessary for reproduced data of the record medium that will be stored by a predetermined amount in an internal memory day and a determining means for determining a length of the sections of a result of the calculation of the first calculation means and a result of the calculation of the second calculation means. In accordance with still a further aspect of the present invention, there is provided a method of producing registration data wherein the data is separated into a plurality of sections and the data to be recorded in a recording medium to be reproduced by a reproduction apparatus, so that the data of the sections can be reproduced by the reproduction apparatus in a different order in which the data that is recorded in the recording medium is produced, comprising the steps of calculating a length of the sections necessary to prevent a buffer from the reproduction apparatus for the storage of the data to be emptied within a range within which a production point is skipped to the next section, calculate a length of the sections necessary for the data reproduced from the recording medium to be stored by a predetermined amount in the buffer and determine a length of the sections of the results of the two calculations. In the recording data production apparatus and the recording data production method, a length of the sections to prevent the capacity of the buffer from emptying, is calculated and then another length of the sections is calculated from the capacity by which the data is stored by a predetermined amount in the buffer, and then a length of the sections of the results of the two calculations is determined. As a result, the length of the sections can be determined quickly and safely. In accordance with yet another additional aspect of the present invention, a recording means is provided which has recorded therein the data that is separated into a plurality of sections in such a way that the data of the sections can be reproduced by a recording device. reproduction in a different order of the order in which the data is recorded in the recording medium, the sections having a determined length corresponding to one of a value that is required to prevent a buffer of the reproduction apparatus for storing data is emptied within a range within which a playback point is skipped to a next section and another value necessary for data reproduced from the recording medium to be stored by a predetermined amount, in the buffer.

In the recording medium, the data is recorded in it with a length of the sections determined in response to one of a calculated value in order to prevent the buffer from emptying and another calculated value from a capacity that allows the data is stored by a predetermined amount in the buffer. Consequently, even when the order of reproduction is different from that in which the sections are recorded therein, the registration means ensures the prevention of the possible lack of data during reproduction. In accordance with still another additional aspect of the present invention, there is provided a recording medium reproduction apparatus for reproducing a recording medium wherein the data separated into a plurality of sections are recorded in such a way that the data of the sections is can reproduce in a different order from an order in which the data has been recorded in the recording medium, which comprises a reproduction medium for reproducing the data registered in the recording medium, a storage medium for storing the reproduced data; the reproduction means, and a control means for controlling the reproduction means so that the reproduction means jumps to a position corresponding to a value necessary to prevent the storage medium from emptying within a period within which the means of reproduction jumps to a next section or to another position corresponding to a value necessary for the method reproduced from the recording medium is stored in a predetermined amount, in the storage medium. In accordance with yet another aspect of the present invention, there is provided a method of reproducing recording means for reproducing a recording medium wherein the data separated into a plurality of sections are recorded in such a way that the data of the sections is they can reproduce in a different order from an order in which the data is recorded in the recording medium, which comprises the steps of reproducing the data recorded in the recording medium by means of a recording device, storing the reproduced data in a buffer and cause the pickup device to jump to a position corresponding to a value necessary to prevent the buffer from becoming empty within a period within which the pickup device jumps to a next section or to another position corresponding to a necessary value so that the data reproduced from the record medium is stored by a predefined amount rminated in the buffer.

In the recording medium reproducing apparatus and in the recording medium reproduction method, the jump is carried out to a position corresponding to a calculated value in order to prevent the storage medium or the buffer from being empty. or in another position corresponding to another value calculated from a capacity that allows the data to be stored in a predetermined amount in the storage medium or buffer. Consequently, the data recorded in the recording medium can be reproduced in a different order from the order in which the data is recorded in the recording medium without presenting any interruption. In accordance with a still further aspect of the present invention, a recording medium reproduction apparatus is provided for reproducing a recording medium wherein the data separated into a plurality of sections is recorded in such a way that the data of the sections is they can be reproduced in a different order from an order in which the data is recorded in the recording medium, which comprises a reproduction medium for reproducing the data recorded in the recording medium, a storage medium for storing the data reproduced by the means of reproduction and admitted thereto at an input rate and sending the data at an output rate lower than the input rate and a control means to cause the reproduction medium to jump to a predetermined positionthe storage medium having a capacity corresponding to at least the sum of a time required for the jump of a reproduction medium and a data waiting time corresponding to a processing unit for data error correction. In accordance with yet another aspect of the present invention, there is provided a method of reproducing recording medium for reproducing a recording medium wherein the data separated into a plurality of sections is recorded in such a way that the data of the sections is they can reproduce in a different order from an order in which the data is recorded in the recording medium, which comprises the steps of reproducing the steps registered in the recording medium by means of a recording device, storing the reproduced data of the medium of registration and admitted thereto to an entry regime once they are inside a buffer having a capacity corresponding to at least the sum of a time required for the hopping of the collection device and the waiting time of the data corresponding to a processing unit for correction of data error and send the data stored in the buffer to a rate of output less than the entry rate. In the apparatus for reproducing the recording medium and the method of reproducing the recording medium, the capacity of the storage medium or the buffer memory is graded in response to a sum of time required for the jump of the reproduction medium or feedback device and a data timeout corresponding to a processing unit for error correction, and the reproduced data is stored once in the buffer having the capacity so graded. Then, the stored data is sent to a lower output rate than the input rate. Consequently, the data recorded in the recording medium can be reproduced in a different order from an order in which the data is recorded in the recording medium, without presenting any interruption. In accordance with a still further aspect of the present invention, there is provided a data production apparatus for producing data to be reproduced by a reproduction apparatus, comprising a first means for calculating a maximum data length with which a memory intermediate of the reproduction apparatus for temporarily storing the reproduced data by the reproduction apparatus does not remain empty within a period within which data is admitted to the buffer, a second means for separating the data into a plurality of units in response to the first medium, and a third means to intercalate the data, per unit and send the interleaved data. In accordance with a still further aspect of the present invention, there is provided a method of producing data to produce data to be reproduced by a reproduction apparatus, comprising the first step of computing a maximum data length with which a memory intermediate of the reproduction apparatus for temporarily storing the data reproduced by the reproduction apparatus does not remain empty within a period within which data is not admitted in the buffer, the second step of separating the data into a plurality of units, in response to the maximum data length calculated, and a third step to interpolate the data unit by unit and send the interleaved data. In the data production apparatus and in the data production method, the data is separated into a plurality of units in response to the maximum length of data with which the buffer of the reproduction apparatus does not become empty within a period of time. within which data is not admitted in the buffer. Then, the data is interleaved unit by unit and sent in the interleaved condition so that they can be recorded in a recording medium. Consequently, the data can be reproduced in a different order of the order in which the data is recorded in the recording medium, without presenting any interruption. The objects, features and advantages above and others of the present invention will become apparent from the following description and the appended claims, which are taken in conjunction with the accompanying drawings, wherein the parts or elements are represented by like reference characters.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a functional diagram of an encoder to which a recording data production apparatus according to the present invention is applied: Figure 2 is a diagrammatic view illustrating the orders in which data can be reproduced; Figure 3 is a diagrammatic view illustrating a method for separating and recording the data by the encoder of Figure 1; Figure 4 is a diagrammatic view illustrating an ECC block; Figure 5 is a diagrammatic view illustrating a bitstream where it is used as a unit of the ECC block. Figures 6 to 8 are flow charts illustrating the operation of a programmer shown in Figure 1; Figure 9 is a diagrammatic view illustrating an order in which the data is reproduced; Figure 10 is a diagrammatic view illustrating a relationship between the ECC block and a skip operation of the record data production apparatus of Figure 1; Figure 11 is a diagram illustrating a relationship between a time required for the jump and a sector number; Figure 12 is a diagrammatic view illustrating the operation of the jump of a sectioned or separate block; Figure 13 is a diagrammatic view illustrating a storage capacity of a buffer and buffer buffer, of the record data reproduction apparatus of Figure 1 in a hopping operation; Figure 14 is a functional diagram of an optical disc apparatus to which the recording medium reproduction apparatus according to the present invention is applied; Figure 15 is a functional diagram of a ring buffer that is shown in Figure 14; Figure 16 is a functional diagram showing a typical coder; Figure 17 is a functional diagram showing a typical optical disk apparatus; Figure 18 is a view illustrating a manner in which the blocks are reproduced in a different order from the order in which they are recorded.

DESCRIPTION OF THE PREFERRED MOLDS.

Figure 1 shows an encoder to which a recording data production apparatus in accordance with the present invention is applied. Referring to Figure 1, the encoder shown includes all of the components of the encoder described above with reference to Figure 16. The overlapping description of the common components is omitted here to avoid redundancy. The present encoder is different from the encoder of Figure 16 since a multiplexed stream of video data and audio data produced by and sent from the multiplexer 12, a storage apparatus 15 is appropriately stored. The multiplexed current stored in the storage apparatus 15 is appropriately read from it and is admitted in a programmer 30 which serves as a separation means. Also, a memory 32 that serves as a storage medium is connected to the programmer 30, and the reproduction apparatus information such as a capacity of an intermediate ring memory 57 of an optimal disk apparatus which will be described below with reference to Figure 14, a speed of a pick-up device 51 during track skipping, a rate of data entry when data reproduced from an optical disk 50 is allowed in the ring buffer 57, a maximum value of one latency time of the optical disk 50, and a playback time by a sector and signal processing information such as a construction of an ECC block that is formed by the encoder ECC 17 of the encoder, are stored in memory 32 in advance This information is read from the memory 32 and is supplied to the programmer 30. In addition, a storage apparatus 31 is connected to the programmer 30, and the and instruction indicating an order of reproduction of the video data to be recorded, are stored in the storage apparatus 31. The stored information of the memory 32 and the storage apparatus 31 are stored in advance by a person manually operating the encoder. The programmer 30 performs programming processing for a multiplexed stream admitted thereto from the storage apparatus 15., in response to the stored information of the memory 32 and the storage apparatus 31, and sends the resulting data to the unit 16 of the sector. During operation, the video data read from the storage apparatus 10 is admitted to the video encoder 11, whereby they are encoded in accordance with the MPEG2 video standards after which they are admitted to the multiplexer 12. In the meantime, the Audio data corresponding to the video data are read from the storage apparatus 13 and admitted to the audio encoder 14 whereby they are encoded in accordance with the MPEG audio standards, after which they are admitted to the multiplexer 12. The multiplexer 12 multiplexes in time division the video data admitted thereto from the video encoder 11, and the audio data admitted thereto from the audio encoder 14 in order to produce data in the form of a multiplexed stream and supplies and stores the multiplexed current to and within the storage apparatus 15. It will be noted that the instructions are admitted to the video encoder 11 and eV audio encoder 14 so that the bit rate of the multiplexed stream may be sufficiently lower than the input rate at which the data is reproduced from the optical disc 50 of the optical disc apparatus and are admitted in the ring buffer 57. The multiplexed stream read from the storage apparatus 15 is admitted to the programmer 30. The scheduler 30 separates the multiplexed stream admitted thereto in response to the instruction data admitted thereto from the storage apparatus 31. Then, the programmer 30 performs the processing of determining the length of the sections in response to the information stored in the memory 32. For example, when the instruction data admitted from the storage apparatus 31 indicate an instruction command to reproduce as shown in Figure 2, the blocks in the order of block A, block B and block D (where the parent regime is P] _) and another instruction order to reproduce the blocks in the order of block A , block C and block D (where the paternal regime is P2), programmer 30 separates block B into a predetermined number of blocks B ^ to B3 and separates block C into a predetermined number of block C ^ to C3 As shown in Figure 3, and arrange in the bitstream, the blocks in the order of blocks B] _, C] _, B2, C2, B3 and C3 after block A, and fix block D that follows the same. Therefore, when the bit stream is played after it is recorded in the optical disk 50 (optical disk 20), it is either reproduced in the order of block A and the blocks &FROM D.

; \, B2, B3 and D or in the other order of blocks A, C] _, C2, C3 and D. In particular, when the sector addresses at the starting points in the boundaries between blocks A, B ] _, C] _, B2, C2, B3, C3 and D are as, bls, c? S, b2s, C2S, b3S, c3s and ds and the directions of the sector of the endpoints to the limits are ae, b ? e, cle 'k2e * c2e' ^ 3e 'c3e v - ^ e * when the reproduction is to take place in the order of blocks A, B and D, after the reproduction of blocks A and B_ is made, the jump is made from the direction b ^ e to the address b2S and the block B2 is reproduced. • Then, the jump from the direction b2e of the end point of block B2 to the direction b3S of the starting point of block B3 is carried out and block B3 is played. Then, the jump from the address b3e of the end point of block B3 to the address ds of the starting point of block D is carried out and block D is reproduced. On the other hand, when the reproduction is to be carried out in the order of block A, block C and block D, the jump from the address ae of the end point of block A to the address c? s of the starting point of block C ^ is carried out and block C is reproduced] _. Then, the jump from the direction c] _e of the end point of the block C ^ to the address C2S of the starting point of the block C2 is carried out and the block C2 is reproduced. Furthermore, the jump from the direction C2e of the end point of block C2 to the address C3S of the starting point of block C3 is carried out and the reproduction is carried out in the order of blocks C3 and D. In order to make it possible for this reproduction is carried out automatically in response to a paternal regime with the optical disc apparatus, like the data in block A, for example, as control information such as the entry point information, the parental P2 rate is recor and as a sector direction from the jump starting point, ae is recor and then as the sector address of a jump destination, c is recor all by programmer 30. Then, the parental P ^ rate , a basic address of the jump starting point, and a jump destination b2S address are recorin block B] _; the parental P2 scheme, a jump start point address and a jump destination C2S address are recorin block C] _; the parental mode P] _, a jump starting point b2e and a jumping destination b3S address are recorin block B2; the parental mode P2, a jump starting point C2e and a jump destination address C3S are recorin block C2; the parental mode P ^, a jump start point b3e and a jump destination address ds are recorin block B3; and the paternal regime P2 is recorin block C3. In the optical disk apparatus, it is possible to control based on the information, so that the jump is carried out towards a jump destination address when an address reaches the direction of the jump starting point. It should be noted that a method for determining the length of the sections when the data block is separated into a plurality of sections will be described below with reference to the flow charts of FIGS. 6 to 8. The sector unit 16 separates the data admitted to it from the scheduler 30 (data separated into a predetermined number of sections and placed in a predetermined order as shown in Figure 3) to sectors each including data of 2,048 bytes and adds a sector address to each of the sectors. The ECC encoder 17, forms, in response to the data admitted thereto from the sector unit 16, 16 sectors of the data to an ECC block and adds parity codes for the detection and correction of errors to the ECC block. In particular, as shown in Figure 4, the ECC encoder 17 adds an ECC (redundancy) section including internal codes and external codes to 16-sector data. Then, as shown in Figure 5, the data of each ECC block (data of 16 sectors indicated by number 1 to number 16) are sent in order to modulator 18. Modulator 18 modulates the data admitted thereto and sends the data modulated to the 19 cutting machine. The cutting machine 19 cuts the optical disk 20 in response to the data admitted thereto. Then, the optical disk 20 is developed, and a stamp is produced using the optical disk 20 as an original disk. Then, a large number of duplicate disks that can be used for the optical disk 50 are produced from the stamp.

Subsequently, a method for determining a length of the data sections will be described with reference to the flow charts of Figures 6 to 8. First, the length of the block B ^ is determined. As seen in Figure 9, block B ^ is skipped after block A is played. If the skip is performed, then the data can not be played during the skip. Accordingly, during the jump, the data stored in the ring buffer 57 (jump buffer 91) is read. However, in order to avoid missing data during the jump, the length of the block B ^ must be graduated to a length with which the jump is completed before the stored data of the jump buffer 91 is used. Therefore, the maximum length of block B ^ to prevent memory The middle of the ring is empty, it is calculated first. For this purpose, in step SI, the programmer 30 calculates a capacity of the jump buffer of the following expression (1): Jump buffer capacity = capacity of the ring buffer - Maximum value ß x of latency time ... (1) In particular, in the present embodiment, the ring buffer 57 of the optical disk apparatus which will be described in detail below with reference to Figure 14, includes, as shown in Figure 15 , an intermediate jump memory 91 and an intermediate latency memory 92. Jump buffer 91 is provided to prevent interruption of the data even when the separate data is skipped as described above with reference to Figure 3. Meanwhile, intermediate buffer memory 92 has a capacity for a maximum track (maximum latency time value ß x). Consequently, even when a track is skipped on the optical disc apparatus, data is prevented from being lost. Accordingly, the capacity of the hop buffer 91 can be calculated from the expression (1) that has been provided above. It will be noted that ß in the above expression (1) represents the output rate of the bit stream reading from the ring buffer 57 (intermediate buffer memory 92). The capacity of the ring buffer 57 and the maximum value of the latency time are stored beforehand in the memory 32 as described above. The programmer 30 can read the stored values and calculate the capacity of the jump buffer 91, from the expression (1) provided above.

Even though the capacity of the jump buffer is calculated from the expression (1) above in step YES, when the capacity of the jump buffer is defined beforehand it can be stored alternately in the memory 32 and read from it. The block B ^ is skipped immediately after the block A is played. Since the block A has a sufficiently large length, the intermediate buffer memory 91 immediately after the block A is reproduced can be considered to have data completely stored. in the same. Therefore, the control proceeds to step S2, wherein a time (compensation time) in which the data stored completely in the jump buffer 91 is read until the jump buffer 91 is empty, is calculated from the following expression (2): Compensation time = Jump buffer capacity / ß (2) Since the block A is long enough, if the data of the block A is reproduced and stored in the jump buffer 91, then the data is stored in the hop buffer 91 until the intermediate hop memory 91 has been completed. If it is assumed that the data is read at an output ß rate, then the time (compensation time) in which the fully stored data is used and can be calculated from the aforementioned expression (2). Then, the control advances to step S3, where a maximum time can be used to skip the block B ^ (to carry out the jump from block A to block C ^) is calculated from the following expression (3): Maximum time for the jump of B ^ = compensation time - 2 x TE ^ Q = compensation time - 30 x Ts (3) Here, g represents a time required to process an ECC block (more accurately, a time required to carry out the processing for 15 sectors as will be described below), and Ts represents a time that is required to reproduce the data for one sector. In particular, as shown in Figure 4, the error correction is carried out in units of an ECC block formed of 16 sectors. As a result, for example, if the last sector of block A is a sector of number 1 from within 16 sectors of number 1 to number 16 of the ECC block as shown in Figure 10, then in order to perform error correction of the data of a sector, also the data of the other 15 sectors of the ECC block from number 2 to number 16, following the sector of number 1. Correspondingly, the jump can not be carried out until after the data of the following 15 sectors have been collected. On the other hand, when, as shown in Figure 10, the upper sector of block C ^ separated from the destination of the jump is the last sector of number 16 from within the sectors of number 1 to number 16 of the ECC block, In order to carry out error correction of the sector, also the data of the 15 sectors from number 1 to number 15 that precede the sector of number 16 are required of course. Correspondingly, the time that can be used to skip section B ^ is a value obtained by subtracting a value twice the time TECC (= 15 x Ts) that is required to read the data for the 15 sectors from the compensation time. Then, the control proceeds to step S4, in which the maximum time that can be used for the jump of the section B ^ calculated in step S3 becomes a corresponding distance (sector number). This conversion can be carried out from a minimum hopping speed which is determined as a standard for the pickup device of the optical disc apparatus. In particular, dividing the maximum jump time of the section B ^ calculated in step S3 by minimum hopping speed (time required to jump across a distance of a track) determined as a standard for the pick-up device of the optical disk, a sector number can be calculated corresponding to the maximum jump time for section B] _. In reality, however, since a plurality of sectors are placed on a track (one rotation), if one track is skipped then a plurality of sectors are skipped at the same time. For example, if it is assumed that NQ sectors are provided for a rotation and a TQ time is required to perform the jump by the distance of a track, then the relationship between the time t required to jump and the sector number exhibits a variation by stages as shown in Figure 11. In this way, for example, when the maximum jump time for the section Bi calculated in step S3 t2i, the corresponding sector number is a sector number N2 that can be skipped in one time t ^ 2 m ^ s short than the time t2i- By the procedure in steps SI to S4 (which serves as a first calculation means) described above, a maximum length that can be used as a length of the section B] _ is calculated to prevent the data that has been stored immediately before the Jump to intermediate jump memory 91 be used. When the separate block C ^ to be skipped as seen in Figure 12, the stored data of section B ^ are read from the jump buffer 91. In order that the length of the section C ^ be prolonged, preferably the jump buffer memory 91 is filled with the data of section B ^ when the jump is to be carried out (because the jump time for section C] _ can be graded to be longer). In this way, the length of the section B ^ needed to fill the jump buffer 91 is subsequently calculated. For this purpose, the control proceeds to step S5, where the time T ^ (= t] ^ - to where the jump buffer 91 is filled is calculated from the following expression (4): Ti = memory capacity intermediate jump / (a - ß) (4) In particular, since the input rate of the intermediate jump memory 91 is a and the output rate is β, the time T ^ in which the intermediate or jumping memory 91 is filled can be calculated from the expression (4) above cited.

Then, the control proceeds to step S6, where the data capacity (the number of sectors of section B) admitted to the jump buffer 91 for time Ti is calculated from the following expression (5): Length of Bi = ax T ^ / Bs (5) where Bs is the amount of data of a sector, in particular, when the data of the section B ^ are admitted to the jump buffer 91, as shown in Figure 13, since the input rate is a and the output rate is ß, the writing in the jumping buffer 91 is carried out at the rate of a - ß from the time tn * and the writing of the data of section B ^ is completed during the time t] _ # Then, the data of the section B ^ are read out at the output rate ß, and the intermediate jump memory 91 is empty during time t2. The jump of the section C ^ must be carried within a period of time t] _ at time t2, and the amount of data in section B ^ to ensure that this period e has calculated from the above-mentioned expression (5). By processing in steps S5 and S6 (which serve as a second calculation means) described above, the length of the section B ^ which is required for the intermediate jump memory 91 to complete is calculated.

It will be noted that the length calculated in steps S5 and S6 is a maximum value not only for section Bi but is common to all sections and is also used to determine the length of any section other than section B] _. Further, when the length of each section does not need to be graded to be very long, a length required to store the data by a predetermined amount (eg, by an amount equal to 90 percent of the full amount) in the buffer memory 91 Jump can be calculated in steps S5 and S6. Subsequently, the control proceeds to step S7, wherein a length smaller than the maximum length of the section Bi required to prevent the intermediate jump memory 91 calculated in step S4 from being empty and the length of the section Bi calculated in step S6 so that the jump buffer 91 is completed, selected and the selected length is finally determined as the length of the section Bi. Then, the control advances to step S8, where the direction b? E of the sector of the end point of the section Bi is calculated from the following expression (6): le ~ ae + length of Bi (6) Since the length of the section B is determined in the manner described above, the processing to determine the length of the section Ci is carried out subsequently. First, a maximum length is calculated that will not cause missing data when section Ci is skipped. For this purpose, in step S9, the data stored in the jump buffer 91 during time ti of Figure 13, is calculated from the following expression (7): Stored data = length of Bi x Ts x (a - ß) (7) Then, in step SIO, T2 (= t2-ti) is calculated from the stored data calculated in step S9 based on the following expression (8): T2 = stored data / ß (8) Subsequently, the control advances to step Sil, where the time that can be used to jump from section Ci (jump from section Bi to section B2) is calculated based on the following expression (9): Maximum jump time for Ci * = T2 - 2 x T ^ cc (9) In addition, the control proceeds to step S12, where the sector number corresponding to the maximum jump time for section Ci, calculated in step Sil, is of course calculated.

By processing in the above-mentioned steps S9 to S12, the maximum length of the section C2 to prevent the intermediate jump memory 91 from being empty can of course be calculated. As described above, the maximum value of the length of a defined section of the amount of data for the jump buffer 91 to complete is already calculated in steps S5 and S6. Therefore, the control proceeds subsequently to step S13, wherein the maximum length of the section Ci calculated in step S12, and the maximum length of the section Ci (common to the sections) calculated in step S6 are compared with the other and finally the smallest of the lengths is determined as the length of the section Ci. Furthermore, in step S14, the sector address C? E of the end point of section C is calculated from the following expression (10): cle = Dle + length of Ci (10) Then, the lengths of the sections are calculated from section B2 and section C3, in a similar way. It is omitted here to avoid redundancy in the calculation description. Figure 14 shows an optical disk apparatus reproducing the optical disk 50 formed in the manner described above. Referring to Figure 14, the optical disc apparatus includes all of the components of the optical disc apparatus described above with reference to Figure 17. The overlapping description of the common components is omitted here to avoid redundancy. In the present optical disc apparatus, an output of the ECC circuit 56 is admitted to the control information extractor 70. The control information extractor 70 extracts control information (jump information and parental information information) described above with reference to Figure 3 of the admitted data thereto and sends the extracted control information to circuit 54 of control that serves as a means of control. The control information extractor 70 sends the data of the information admitted thereto from the ECC circuit 56 with the exception of the control information to the ring buffer 57 so that the data can be stored in the buffer memory 57. ring. The ring buffer 57 is formed, as shown in FIG. 15, of an intermediate buffer memory 91 which serves as a storage medium and a buffer memory 92 that serves as the storage medium.

The jump buffer 91 has a capability represented by the following expression (11) wherein the hopping time of the pickup device 51 is Td Memory capacity 91 intermediate jump = ß (Tj + 2 x TECC) (11) Meanwhile, the intermediate latency memory 92 is scaled to a capacity represented by the following expression (12): Latency intermediate memory capacity 92 = ß x maximum value of latency time (12) During operation, the pickup apparatus 51 which serves as a reproduction medium irradiates a laser beam on the optical disk 50 and reproduces the data recorded on the optical disk 50 from the reflected light of the beam or laser beam from the optical disk 50.

A reproduction signal sent from the acquisition device or device 51 is supported and demodulated by the demodulation circuit 52. The data demodulated by the demodulation circuit 52 is admitted to the sector detection circuit 53 whereby a sector address is detected. Meanwhile, the control circuit 54 discriminates a position of the pick-up device 51 from the sector direction supplied thereto of the sector detection circuit 53. If the position is not a desired position, the control circuit 54 controls the tracking servo circuit 55 to feed the pick-up device 51 to a predetermined sector address position. Consequently, as the data recorded in the predetermined position of the optical disk 50 is reproduced by the pick-up device 51. The data sent from the demodulation circuit 52 are admitted to the ECC circuit 56, whereby detection and correction are carried out. of errors after which they are admitted to and stored in the ring buffer 57. The data stored in the ring buffer 57 is read out again from the ring buffer 57 and is admitted to the demultiplexer 58. The demultiplexer 58 demultiplexes the data admitted thereto into audio data and video data, and sends the data audio to the audio decoder 59 and sends the video data to the video decoder 60. The audio decoder 59 decodes the audio data admitted thereto and sends the decoded audio data to the speaker not illustrated. Meanwhile the video decoder 60 decodes the video data admitted to it and sends the decoded video data to the monitor apparatus not illustrated. Each audio decoder 59 and video decoder 60 sends a code request signal to the control circuit 54 when its decoding procedure is completed. The control circuit 54 controls the intermediate latency memory 92 in response to the code request signals to read the data stored in the latency buffer 92 and send the data read in this way to the audio decoder 59 and the decoder 60. of video through the demultiplexer 58. The control circuit 54 monitors the state signal admitted thereto from the intermediate latency memory 92 and controls the position of the pickup device 51 through the tracking servo circuit 55 so that the memory 92 intermediate latency can not overflow or undercurrent. The rate of data entry into the intermediate latency memory 92 is graded to have a value sufficiently higher than the output rate. The intermediate latency memory 92 has a capacity corresponding to at least a maximum latency time of the optical disk 50 (where the optical disk 50 is a CLV disk, a capacity for a rotation on an outer circumference) so that the variable rate data admitted to the intermediate latency memory 92 may be continuously sent to a predetermined output rate. In addition, the operation of the intermediate latency memory 92 will be described. For example, if a track skip instruction is sent to perform the skip again from the control circuit 54, then the tracking circuit 55 causes the play position via the pick-up device 51 to move to a position on the pick-up side. the internal circumference through the distance of a track. Then, the control circuit 54 inhibits the writing of the new data in the intermediate ring memory 57 (intermediate latency memory 92) for a time until the optical disk 50 rotates again so that the reproduction position returns to the position before the jump, that is, for a period of time until the sector number obtained from the sector detection circuit 53 returns to the number of the sector from which the runway jump was carried out. Then, the data already stored in the intermediate latency memory 92 is transferred to the audio decoder 59 and the video decoder 60 through the demultiplexer 58, in accordance with what is necessary.

In addition, even when the sector number obtained from the sector detection circuit 53 after the track skip is coincident with the sector number from which the skip has been carried out, when the amount of data stored in the track Latency intermediate memory 92 exceeds a predetermined reference value, that is, when the intermediate latency memory 92 can possibly reach an overflow, the writing of the data in the intermediate latency memory 92 does not resume but the jump of Follow-up is carried out again. For a time until the optical disk 50 rotates and the original playback position is restored after the track skip is performed by a distance of one track, the writing of the new data in the intermediate memory 92 latency does not take place. Consequently, a longer time is required only by the time of the track jump to effect the tansference of the data to the intermediate latency memory 92 and correspondingly, the average transfer rate a to the intermediate latency membrane 92 fluctuates to more stable values. low than the average maximum transfer rate am. Here, the latency buffer 92 at least has a capacity with which it can store the data for at least one track (one rotation) of the optical disk 50, i.e., a storage capacity of xam (maximum rotation period). of optical disk 50). Accordingly, wherein the optical disk 50 is for example a CLV disk, since the rotation period exhibits a maximum value at an outer circumference thereof, the intermediate latency memory 92 has at least one storage capacity of a track. (one rotation) in the outer circumference, that is, the storage capacity of xam (period of rotation of the outer circumference). When the maximum transfer rate from the intermediate latency memory 92 to the demultiplexer 58 is represented by β, ßm is graded to a value equal to or less than m (ß &aa). When the maximum transfer rate is graded in this manner, a code request for data transfer from the audio decoder 59 or the video decoder 60 to the intermediate latency memory 92 (via the control circuit 54) can not be sent freely regardless of the time interval of the track skip. When ßm is considerably less than am, for example, equal to about half the value of am, since the amount of the data written in the intermediate buffer memory 92 is greater than the amount of the data read from the intermediate memory 92 of latency, a condition continues where the intermediate latency memory 92 is almost complete. On the other hand, when the optical disc 50 is a CLV disc, the amount of data reproduced when the optical disc 50 performs a rotation is considerably different between an internal circumference and an outer circumference thereof. If the storage amount of the intermediate latency memory 92 is adjusted to an outer circumference of the optical disk 50 with which the amount of data is greater as described above, then the storage capacity of the intermediate memory 92 of latency has considerable space in an internal circumference of the optical disk 50. Therefore, when an error is detected that is not capable of being corrected by the ECC circuit 56, the possibility in which recovery against the error can be carried out is increased by carrying out the backward jump to collect the same data again and carry out error detection and correction processing again. It should be noted that the intermediate latency memory 92 has the same function as that of a ring buffer proposed by the applicant present in Japanese Patent Number Hei 4-92223.

Meanwhile, the control information extractor 70 extracts the control information from the information sent from the ECC circuit 56 and sends the control information to the control circuit 54. When the admitted paternal regime of the control information extractor 70 and the paternal regime of a admitted observer of the input section 61 coincide with one another, the control circuit 54 controls, if the sector direction admitted from the circuit 53 of sector detection (the address of a sector that currently has access through the pick-up device 51) is coincident with the sector direction of the jump starting point extracted by the control information extractor 70, the pick-up device 51 through the tracking servo circuit 55 to cause the pickup device 51 to jump to the sector direction of the skip destination defined in the control information extracted by the control information extractor 70. In particular, when a predetermined paternal regime is admitted from the input section 61, the control circuit 54 automatically selects a playback order corresponding to the input. For example, if the parental regime admitted and graduated by the input section 61 is Pi as shown in Figure 3, the block A, and then the block Bi, the block B2, the block B3 and the block D are reproduced successively in response to the directions of the jump starting points and the graduated jump destinations corresponding to the parental regime. On the other hand, if the paternal regime admitted from the input section 61 is P2, then the reproduction is carried out in the order of block A, block C, block C2, block C3 and block D. Even when The present invention has been described above by way of example wherein the data is recorded and reproduced from an optical disk, the present invention can be applied to a case where the information is recorded and reproduced from any other means of communication. registry. Having fully described the invention, it will be apparent to a person skilled in the art that many changes and modifications can be made therein without deviating from the spirit and scope of the invention, as set forth herein.

Claims (23)

CLAIMS;

1. An apparatus for producing registration data for producing data to be recorded in a recording medium to be reproduced by a reproduction apparatus, comprising: a storage medium for storing an intermediate memory capacity of the reproduction apparatus for storing the data, input / output rates to and from the buffer, a speed in the track skip of a pickup device of the playback apparatus when the data is reproduced from the recording medium, and a latency time of the recording medium. registration and information regarding the processing time of an ECC; and a separation means for severing the data in response to storage of the storage medium so that the reproduction apparatus can reproduce the data in a different order from an order in which the data is recorded in the recording medium.

2. A method of producing registration data to produce data to be recorded in a recording medium to be reproduced by a reproduction apparatus, comprising the steps of: storing in advance a buffer capacity of the recording apparatus; reproduction for storing the data, rates of input / output to and from the buffer, a speed in the track skip of a pickup device of the playback apparatus when the data is reproduced from the recording medium, a latency time of the registration means and information relating to the processing time of an ECC; and separating the data in response to the stored information so that the reproduction apparatus can reproduce the data in a different order from an order in which the data is recorded in the recording medium.

3. A recording data production apparatus that separates the data into a plurality of sections and produces data to be recorded in a recording medium to be reproduced by a reproduction apparatus, so that the data of the sections is they can be reproduced by the reproduction apparatus in a different order in an order in which the data are recorded in the recording medium comprising: a first calculation means for calculating a length of the sections necessary to avoid a buffer of the apparatus playback for data storage is left empty within a range within which a playback point is skipped to a next section; a second calculation means for calculating a length of the section is necessary for data reproduced from the recording medium to be stored by a predetermined amount in the buffer; and a determining means for determining a length of the sections of a result of the calculation of the first calculation means and a result of the calculation of the second calculation means.

4. A method of producing registration data wherein the data is separated into a plurality of sections and the data to be recorded in a recording medium to be reproduced by the reproduction apparatus so that the data of the sections may be reproduced by the reproduction apparatus in a different order in which the data is recorded, in the recording medium, which comprises the steps of: calculating a length of the sections necessary to prevent a buffer of the reproduction apparatus for storing the data becomes empty within a range within which a playback point is skipped to the next section; calculating a length of the sections necessary for the reproduced data of the recording medium to be stored by a predetermined amount in the buffer; and determine a length of the sections of the results of the two calculations.

5. A recording medium, which has recorded in the same data that are separated into a plurality of sections in such a way that the data of the sections can be reproduced by a reproduction apparatus in a different order of an order in which record the data in the recording medium, the sections have a determined length corresponding to a value required to prevent a buffer of the reproduction apparatus for storing the data from being emptied within a range within which one playback point is skipped to a next section and another value necessary for data reproduced from the recording medium to be stored by a predetermined amount in the buffer.

6. A recording medium reproducing apparatus for reproducing a recording medium wherein the data separated into a plurality of sections is recorded in such a way that the data of the sections can be reproduced in a different order from an order in which the data is recorded in the recording medium, which comprises: a reproduction medium for reproducing the data recorded in the recording medium; a storage medium for storing the data reproduced by the reproduction medium; and a control means for controlling the reproduction means so that the reproduction means jumps to a position corresponding to a value necessary to prevent the storage medium from becoming empty within a period within which the reproduction medium jumps to a next section or another position corresponding to a value necessary for the data reproduced from the recording medium to be stored by a predetermined amount in the storage medium.

7. A method of reproducing recording means for reproducing a recording medium wherein the data separated into a plurality of sections is recorded in such a way that the data of the sections can be reproduced in a different order than an order in which the data is recorded in the recording medium, which comprises the steps of: reproducing the data recorded in the recording medium by means of a capturing device; store the reproduced data in a buffer; and causing the pickup device to jump to a position corresponding to a value necessary to prevent the buffer from becoming empty within a period within which the pickup device jumps to a next section or to another position corresponding to a necessary value so that the reproduced data of the recording medium is stored by a predetermined amount in the buffer.

8. A recording medium reproducing apparatus for reproducing a recording medium wherein the separated data in a plurality of sections is recorded in such a way that the data of the sections can be reproduced in a different order from an order in which the data is recorded in the recording medium, comprising: a reproduction medium for reproducing the data recorded in the recording medium; a storage means for storing the data reproduced by the reproduction medium and admitted thereto at an input rate and sending the data at a lower output rate than the input rate; and a control means for causing the reproduction means to jump to a predetermined position; the storage medium has a capacity corresponding to at least the sum of a time required for the jump of the reproduction medium and a data waiting time corresponding to a processing unit for data error correction.

9. An apparatus for reproducing the recording medium according to claim 8, wherein the capacity of the storage medium also corresponds to a product with a maximum value of the output rate and a maximum value of a latency time of the medium. record during the jump.

10. A method of reproducing recording medium for reproducing a recording medium wherein the data separated into a plurality of sections is recorded in such a way that the data of the sections can be reproduced in a different order than an order in which the data is recorded in the recording medium, which comprises the steps of: reproducing the data recorded in the recording medium by means of a capturing device; storing the data reproduced from the recording medium and admitted to it at an input rate once they are in the buffer having a capacity corresponding at least to the sum of a time required for the hopping of the pickup device and a data waiting time corresponding to a processing unit for correction of data error; and sending the data stored in the buffer to an output rate lower than the input rate.

A data production apparatus for producing data to be produced by a reproduction apparatus comprising: a first means for calculating the maximum length of the data with which a reproduction apparatus buffer for temporarily storing the reproduced data the reproduction device does not remain empty within a period within which no data is admitted to the buffer; a second means for separating the data into a plurality of units in response to the first means; and a third means for interleaving the data unit by unit and for sending the interleaved data.

A data production apparatus according to claim 11, wherein the first means includes a means for calculating the maximum length of the data with which the buffer is not empty in response to a buffer capacity and a regime of data entry to the buffer.

A data production apparatus according to claim 12, wherein the first means further includes a means for calculating the maximum length of the data with which the buffer is not empty in response to a time required for the jump from a point of reproduction.

A data production apparatus according to claim 13, wherein the first means further includes a means for calculating the maximum length of the data with which the buffer is not empty in response to a runway jump speed. of the reproduction apparatus and a latency time of a recording medium.

15. A data production apparatus according to claim 13, wherein the first means further includes a means for calculating the maximum length of the data with which the buffer is not empty, in response to a time required for the reproduction apparatus performs the error correction processing of the data.

16. A data production apparatus according to claim 15, wherein the data has a parity that is added to each data block of a predetermined length.

17. A data production apparatus according to claim 11, wherein the third means includes a means for interleaving a plurality of image data, unit by unit.

18. A method of producing data to produce data to be reproduced by a reproduction apparatus comprising: the first step for calculating a maximum data length with which a buffer of the reproduction apparatus in order to temporarily store the reproduced data the reproduction apparatus is not empty, within a period within which data is not admitted to the buffer; the second step of separating the data into a plurality of units in response to the calculated maximum data length; and the third step to interpolate the data unit by unit and send the interleaved data.

19. A data production method according to claim 18, wherein the first step includes the step of calculating the maximum length of the data with which the buffer is not empty in response to a buffer capacity and a regime of data entry to the buffer.

20. A data production method according to claim 19, wherein the first step further includes the step of calculating the maximum length of the data with which the buffer is not empty, in response to a time required for the jump of a point of reproduction.

21. A data production method according to claim 20, wherein the first step further includes the step of calculating the maximum length of the data with which the buffer does not remain empty, in response to a jump rate of track of the playback apparatus, and a latency time of a recording medium.

22. A data production method according to claim 20, wherein the first step further includes the step of calculating the maximum length of the data with which the buffer is not empty, in response to a time required for the reproduction apparatus performs the error correction processing of the data.

23. A data production method according to claim 18, wherein the third step includes the step of interleaving a plurality of image data, unit by unit.