TW295658B - - Google Patents

Description

A7 _______B7 V. Description of the invention (1) [Industrial scope of application] The present invention is related to the recording and / or reproduction or transmission and / or reception of compressed data that compresses digital audio signals and other bits, the recording of compressed data and / Or reproduction or transmission and / or reception methods, and recording media, especially those related to devices that can record in a compressed mode with multiple bit rates, techniques and recording media "[Past Technology] The inventor has previously The input digital audio signal bit compression "Technology that records a predetermined amount of data as a recording unit in character sets" is proposed in Japan ’s Japanese Patent Application No. 2-221364, Japanese Patent Application No. 2 221365, and Japanese Patent Application No. 221365 2 — No. 222821, the specifications and drawings of No. 2-2 2 2 8 2 No. 3 in Japan This technology uses recording and reproduction as a recording medium using an optical disk, that is, all

Refers to the CD-I (CD-INTERACTIVE) CD-ROM XA audio data format specified by the AD P CM audio data. Using this AD P CM data, for example, 3 2 sector divisions and the interleaved connection, the Ministry of Light Industry Central Standard Falcon Bureau employee consumption cooperation du printing --------- {clothing (please read the note on the back Please fill in this page for the details.) The number of sectors used as the recording unit is recorded as a character set on the optical disk. The AD P CM sound of the recording and reproduction device using this optical disk is in several modes. It can be selected, for example, compared with the so-called compact disc (CD) reproduction time, it is required to have a 2 times compression rate sampling frequency of 37.8 kHz class A, and a 4 times compression ratio sampling frequency of 37.8 kHz class B , 8 times compression ratio sampling frequency is 18 · 9kHz, this paper standard is applicable to China National Standard (CNS) A4 specification (210X297 mm). '~ -4 ~ Economic. Ministry of Economic Affairs Central Bureau of Standards Printed A7 Β7 5. Description of the invention (2) Class C. That is, for example, when the above-mentioned B-level digital audio data is slightly compressed to 1/4, the reproduction time of the disc recorded in this B-level mode is 4 times that of the standard CD format (CD-DA format). Because of this, it is possible to record and reproduce the standard 12 cm on a compact disc for the same degree of time, and it is possible to achieve miniaturization of the device. However, since the rotation speed of the disc is the same as that of the standard CD, for example, in the case of the above-mentioned class B, compressed data of 4 times the reproduction time can be obtained. Therefore, for example, in the unit of time such as a sector or a cluster, the same compressed data is read repeatedly 4 times, and only one of the compressed data is transferred to sound reproduction. Specifically, when scanning a spiral-shaped recording track, a track jump back to the original track position is performed for each revolution, and the same track is reproduced in the same repeating tracking pattern four times. This system can compress data normally for at least one of four repeated readings, for example, so it has a strong ability to generate errors in response to confusion in external conditions, especially for small portable machines. In the future, it can also be used as a semiconductor memory medium. To increase the compression efficiency, it is better to use the additional bit compression. Specifically, a so-called IC card is used to record and reproduce audio signals. For this IC card, compressed data processed by bit compression is recorded and reproduced. IC cards using semiconductor memory in this way tend to increase recording capacity and lower prices with the advancement of semiconductor technology, but at the initial stage of supply to the market, the capacity may be slightly insufficient, or high prices. Therefore, for example, other large-capacity recording media such as the above-mentioned optical disk and the like can transfer contents to an IC card and the like, and can be frequently rewritten and used. The size of the paper is applicable to the Chinese National Standard (CNS) A4 specification (210X 297 mm) nt ^ mi li—----_! 1 nn nm n ^ i 1 ^ 1 = ---_ i · i 一 OJ (please Read the precautions on the back first and then fill out this page) -5-M7 Ministry of Economy, Central Standards Bureau, Employee Consumption Cooperation Du Printed A7 B7 V. Description of Invention (3) For example, it is included in the above optical disk "Copy your favorite songs to the IC card" in the plural songs and change other songs when you don't need them. In this way, by frequently rewriting the contents of the IC card, you can enjoy a few songs on the IC card outdoors and enjoy different songs. . [Problems to be Solved by the Invention] However, when recording and reproducing an audio signal, for various purposes, the necessary frequency bandwidth and noise have different signal characteristics. For example, when high-quality sound is needed, the frequency bandwidth is required to be 15 k Hz to 20 k Hz, and the signal must have good noise characteristics. To achieve this, the bit rate is allowed to be higher. In this regard, when the sound signal is dominant, the frequency bandwidth only needs to be 5 kHz to 7 kHz, and the signal to noise characteristics need not be very high. However, in order to record for as long as possible, the bit rate must be reduced to a level of 64 k b p s to several k b p s. For such complex applications with different levels of requirements, it is necessary to provide a recording and reproducing device that can meet the demand and minimize the economic burden. However, if you have multiple modes with different bandwidths, you must provide multiple sampling frequencies in the past, which complicates the sampling frequency signal generation loop and makes it difficult to avoid an increase in hardware scale. At this time, it will be difficult to move the information between the modes. When writing the information of the high bit rate mode on the large-capacity optical disk to the small capacity IC card in the low bit rate mode, the compression must be completely unpacked. Mode, reply to the signal on the time axis, and then add the compression processing in the low bit rate mode, the processing calculation is extremely large, so the paperless scale applies the Chinese National Standard (CNS) A4 specification (210X 297mm) (please (Read the notes on the back before filling this page)

* 5T -6-B7 B7 Printed by the Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economy V. Description of Invention (4) The method is carried out immediately. Then, as it becomes a mode with a low bit rate, the quality of the sound is degraded because the available bits are reduced. When the frequency band width is narrowed, when the compressed frequency division width is constant regardless of the frequency, the frequency band of 20 k Hz is divided by 32 to the extent that the critical frequency band width of the low domain is 100 Hz In general, the broad frequency band of 700 Hz is divided, and the mid-low range is almost wider than the critical band, and the compression efficiency will be significantly reduced. In addition, when the bit rate drops, the main information and auxiliary information of the high-efficiency encoding are only reduced unilaterally when the amount of offset bits is reduced, and the deterioration of the sound quality will be obvious. Therefore, not only the main information is to be reduced, but also the auxiliary information is necessary to be reduced. The present invention has been carried out in view of this. First, when it is desired to have a complex bit rate mode, the sampling frequency signal generation circuit is prevented from being complicated and the hardware scale is increased. Secondly, it is to provide compressed bit data obtained from the above-mentioned optical magnetic disc or optical disc and other recording media, when copying to other recording media such as the above-mentioned IC card, or to reproduce the bits from the above-mentioned recording media of the above-mentioned IC card, etc. For data compression and / or reproduction devices that can be performed with a small amount of calculation when compressing data, 'Third, those who aim to prevent the degradation of sound quality in the low bit rate mode as much as possible. The compressed data recording and / or reproducing device, method or recording medium is the same regardless of the bit rate of each mode. By using the same paper size, the Chinese National Standard (CNS) Α4 specification (210X 297 mm) is applicable (please read first Note on the back and then fill out this page). Clothing. * Νβ Jing-Jin Central Bureau of Standards, Consumer Labor Cooperative Printed 11 Λ7 B7 V. Invention Description (5) Sample frequency to prevent sampling when there are multiple sampling frequencies The complexity of the frequency signal generation circuit and the increase in hardware size ^ Also, when the sampling frequency of each mode is different, it is difficult to move the information of each mode It is easy to carry out, for example, when writing the high bit rate mode information on the large-capacity optical disk to the low bit rate mode of the small-capacity IC card, it is not necessary to completely unlock the compressed mode to restore the signal on the time axis, only for additional processing , To achieve low bit rate mode compression processing, which can suppress the increase in the amount of processing calculation to the minimum, and can be processed in real time. Furthermore, when the low bit rate mode is changed to at least the higher bit rate mode, the format is changed, that is, only the arrangement of the encoded data can be changed. In the present invention, in order to further improve the compatibility of compressed data (encoded data), by equalizing the composition of the block size of each bit rate orthogonal transformation, the conversion between different bit rate patterns can be achieved without Recovery is performed at high speed with time axis signals. In addition, in the low bit rate mode, if the complex information blocks floating in the time axis direction or the frequency axis direction (Block Floating) and / or the quantized noise generating information blocks are combined, the reduction is always Information group floating information group and / or quantized noise to generate information _ information group required scale factor (Scale Factor), word length (Word Length) and other side information. Generally, the audio signal has a highly correlated time axis direction and frequency axis direction. Therefore, the above-mentioned information group floating information group and / or quantized noise generating information group are commonized, and the impact on the sound quality is very small. When the signal is constant, the orthogonal transformation block size is changed to prevent the compression efficiency from decreasing. The bits of the reduced secondary information can be added to the primary information. The standard is applicable to the Chinese National Standard (CNS) A4 specification (2 丨 0> <297mm) (please read the precautions on the back and then fill out this page),-= a Economy. Employee Consumer Cooperation Duin Fine _ A1 u B7 &quot; —. 'V. Description of the invention (6) In addition, in all modes, in order to control the frequency division width of the quantized noise, the frequency band of 20 kH z is divided when the frequency is fixed at a certain frequency It is 3 2 points, so that the critical band width of the low range is 1 〇0 H z, which is a large wide area of 7 〇〇Η ζ level, in the low and middle range is narrower than the critical band width, efficiency It has dropped significantly. In the present invention, the frequency division width of the quantization noise is controlled so as to be close to the critical frequency band width. At least under most frequency division widths, the higher the frequency, the wider the selection. When copying the bit compressed data obtained from the recording medium such as the above-mentioned optical disk to the other recording medium such as the IC card, at least do not perform the full bit expansion, keep it as it is or perform additional compression to copy it. When additional compression is performed, no signal transformation is performed, bit redistribution is performed on the frequency axis, and then quantization is performed, and the complex secondary information is recorded in a common way [Function] According to the compressed data recording and / Or the reproducing device, method or recording medium, by using one kind of sampling frequency, can prevent the complicated circuit of the generated sampling frequency signal and the increase of the hardware scale when there are multiple sampling frequencies. In addition, the information movement between different bit rate modes can be easily carried out without complicated operations such as sampling frequency conversion, and the high bit rate mode information on the large-capacity optical disk is written to the small capacity IC card in the low bit rate mode At this time, only the additional processing is needed to realize the low bit rate mode compression processing, and the increase in the amount of processing calculation is suppressed to the minimum real-time processing. In addition, according to the present invention, it is possible to prevent the bit rate from being low. This paper standard is applicable to the Chinese National Standard (CNS) Α4 specification (210X 297 gong). A7 B7 printed by the Staff Consumer Cooperative of the Bureau of Standards V. Description of invention (7) The sound quality of the model has deteriorated. [Examples] Hereinafter, examples of the present invention will be described with reference to the drawings. First, FIG. 1 is a block circuit diagram showing a schematic structure of an embodiment of a compressed data recording and / or reproducing apparatus of the present invention. The recording and reproducing device of FIG. 1 is composed of a recording and reproducing unit of a magneto-optical disk 1 of a recording medium and two recording units of an IC card 2 of another recording medium in a system. When the signal reproduced by the reproduction system on the side of the recording and reproduction unit of the magneto-optical disk is recorded in the IC card recording unit, it is read by the optical head 53 through the magneto-optical disk 1 of the reproduction system and sent to the decoder 7 1. The regenerated compressed data (ATC sound data) subjected to E FM demodulation, de-interlacing processing, or error correction processing is sent to the memory 8 5 of the above IC card recording unit. For this memory 85, The additional processing of the variable bit rate coding processing window formed by the additional compressor 84 that performs additional processing such as average information amount coding is recorded on the IC card 2 via the IC card interface circuit 86. In this way, the reproduced compressed data is transmitted to the recording system in a compressed state before being expanded by the ATC decoder 73, and recorded on the IC card 2 »However, when it is normally reproduced (when listening to audio), it is The media (optical disk 1) reads compressed data intermittently or in sections with a predetermined amount of data (for example, 3 2 sectors + several sectors), transforms this expansion into a continuous sound signal, and copies At that time, the compressed data on the media is continuously read and sent to the recording system for recording. Therefore, the paper size can be copied according to the Chinese National Standard (CMS) A4 specification (210X 297mm) I ffm He tn nn ^ it—-* J ^ i (please read the precautions on the back before filling this page ) Λ7 _ B7 5. Description of the invention (8) High-speed (short time) copying of the reduction ratio. The specific structure of FIG. 1 is described in detail below. In the optical magnetic disk recording and reproducing unit of the compressed data recording and / or reproducing apparatus shown in FIG. 1, as the recording medium, first, the optical magnetic disk 1 driven by rotation of the spindle motor 51 is used. When recording data on the magneto-optical disk 1, for example, when the laser light is irradiated through the optical head 53, a modulated magnetic field corresponding to the recorded data is applied through the magnetic head 54 to perform so-called magnetic field modulation recording along the light The recording track of the disk 1 records data. At the time of reproduction, the recording track of the magneto-optical disk 1 is tracked by the optical head 53 to follow the laser light to perform magneto-optical reproduction. Economy. Central Ministry of Economy β; Printed by the Industrial and Consumer Cooperative ---- H —ι ^ ϋ-I-1. .1 ^ 1 n ^ i I ^^^ 1 V w (Please read the notes on the back first (Fill in this page) In the following, the above recording and reproducing machine will be mainly described. The optical head 5 3 is provided with optical parts such as laser light sources such as laser diodes, collimators, objective lenses, polarized beam splitters, cylindrical lenses, etc., and photodetectors of the light-receiving part of a predetermined pattern. Constructor. The optical head 53 is provided at a position opposed to the magnetic head 54 via the optical disk 1. When the magneto-optical disk 1 records data, the magnetic head 5 4 is driven through the drive circuit 6 6 ′ of the recording system to be described later, while applying a modulated magnetic field corresponding to the recorded data, and through the optical head 5 3, due to the magneto-optical disk 1 The target track is irradiated with laser light. Thermomagnetic recording is performed by a magnetic field modulation method. In addition, the optical head 53 detects reflected light of the irradiated laser light on the target track. For example, it detects a so-called focusing error by the astigmatism method, for example, a tracking error by the so-called push-pull method. When reproducing data from the optical disk 1, the optical head 53 detects the above-mentioned focus error or tracking error, and at the same time, detects the difference in the angle of polarization of the reflected light from the target track of the laser light to generate a reproduction signal. This paper scale is applicable to the Chinese National Standard (CNS) Α4 specifications (2 x 297 mm) 11 ___B7_ V. Description of the invention (9) The output of the optical head 5 3 is provided to the RF circuit 55. This RF circuit 55 extracts the focus error signal or tracking error signal output from the optical head 53 and supplies it to the servo control circuit 56, and binarizes the reproduction signal to the decoder 71 of the reproduction system described later. The servo control circuit 56 is composed of, for example, a focus servo control circuit, a tracking servo control circuit, a spindle motor servo control circuit, and a spiral servo control circuit. The focus servo control loop makes the focus error signal to be 0 'to perform focus control of the optical system of the optical head 53. Furthermore, the tracking servo control loop makes the tracking error signal to be 0, and performs tracking control of the optical system of the optical head 53. Furthermore, the above-mentioned spindle motor servo control circuit drives the optical disk 1 to rotate at a predetermined rotation speed (for example, a certain linear speed) to control the spindle motor 51. In addition, the above-mentioned spiral servo control loop is controlled by the system 5 7 to move the optical head 5 3 and the magnetic head 5 4 at the designated track position of the optical disk 1. The servo control loop 5 6 that performs various control loop actions in this way is sent to the system controller 57 via the servo control loop 5 6, and the information shown in the operating states of the various parts controlled. Du Printed by the Consumer Cooperation Cooperation of the Central Standards Bureau of the Ministry of Light Economy --------- {'Cloth— (Please read the precautions on the back before filling in this page) The system controller' 5 7 is connected with a keyboard The input operation part 58 or the display part 5 9 »This system controller 57 is an operation mode specified by the operation input information of the operation part 5 8 through the keyboard, and controls the recording system and the reproduction system. In addition, the system controller 7 manages the tracking of the optical head 5 3 and the magnetic head 5 4 based on the address information of the sector unit reproduced from the header time of the recording track of the optical disk 1 or the Q data of the subcode, etc. Recording. Recording position and reproduction position on the track. In addition, the system controller 57 is based on the paper standard of China National Standard (CN'S) A4 (2 丨 0X297mm). 12-Printed by the Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs. Λ 7 _______________ Β7. Invention description (10 ) Via the keyboard input operation part 58, the bit compression mode information of the ATC (Adaptive Transform Coding) encoder 6 3 described later or the RF circuit 5 5 is selected by switching, according to the bit compression mode in the reproduced data obtained through the reproduction system described later Information, while displaying the bit compression mode on the display unit 59, the display of the control reproduction time is performed based on the data compression rate of the bit compression mode and the information of the reproduction device on the recording track. The reproduction time display is obtained by recording the track of the optical disk 1 so-called header time or so-called subcode Q data, etc., by reproducing the sector unit address information (absolute time information) by multiplying the above bits The reciprocal of the data compression rate in the meta-compression mode (for example, 4 when compressed by 1/4), the actual time information is obtained and displayed on this display unit 9. However, at the time of recording, when absolute time information is pre-recorded (pre-formatted) on a recording track such as an optical disk, etc., by reading the pre-formatted absolute time information, the data compression ratio is multiplied Countdown, and the current position can be represented by the actual recording time.

Then, in the recording system of the recording and reproducing device of this disc recording and reproducing device, the analog audio input signal A IN from the input terminal 60 is supplied to the A / D converter 62 through the low-pass filter 61. The A / D converter 62 quantizes the analog audio input signal A IN described above. The digital audio signal obtained by the A / D converter 62 is supplied to the AT C encoder 63. In addition, the digital audio signal D IN from the input terminal 6 7 is supplied to the ACT encoder 63 through the digital input interface circuit 68. ACT encoder 6 3 series applies the above-mentioned input signal A IN to the above-mentioned A. The paper standard applies the Chinese National Standard (CNS) A4 specification (210X297 mm) (please read the precautions on the back before filling this page). Order 13-A7 __ B7__ V. Description of the invention (11) / D converter 6 2 For quantizing the digital sound P CM data of the transmission speed determined by quantization, perform bit compression (data compression) processing corresponding to the various modes of the ACT method shown in Table 1, The operation mode is designated via the system controller 57 described above. For example, in the B mode, the sampling frequency is 44. The compressed data (ATC data) with a bit rate of 64kbps is supplied to the memory 64. The data transmission speed of the stereo mode in the B mode is reduced to 1/8 (9.375 sectors / sec) of the data transmission speed (75 sectors / sec) of the standard CD-DA format described above <Please read first Note on the back and then fill out this page) The paper printed by the Ministry of Economy, Central Bureau of Standards and Industry-Consumer Cooperative applies to the China National Falcon (CMS) A4 format (210X297 mm) A7 — B7 ________—- V. Inventions Description (l2) [Table 1] Sampling frequency = 44 · 1kHz Γ ^ Mode bit rate bandwidth information group length kbps / channe1 kHz msec A 128 22 11.6 B 64 13 23.2 C 32 5.5 34. 8 D 1 6 3 46.4 ^ \ water Order (please read the precautions on the back and fill in this page first). In the embodiment of Figure 1. printed by the Consumer Labor Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs, the sampling frequency of the A / D converter 62 is fixed to the above standard The sampling frequency of CD — DA format is 44.1 kHz. For ATC encoder 13, the sampling frequency is also maintained. At this time, the lower the bit rate mode, the narrower the signal passing bandwidth. Corresponding to this, the cut-off frequency of the low-pass filter 61 is also switched and controlled. That is, corresponding to the above compression mode, the cut-off frequency of the low-pass wave reducer 6 1 of the a / D converter 6 2 is simultaneously switched and controlled. That is, the paper standard is applicable to the Chinese National Standard (CNS) A4 specification (210X 297 mm) '------ A7 Β7 5. Description of the invention (I3) Yes. Next, the memory 64 controls the data writing and reading through the system controller 57, and temporarily stores the ATC data supplied by the AT C encoder 63, which should be used as a buffer for recording on the disc. Use it in memory. That is, for example, in the stereo mode of the B mode described above, the compressed audio data supplied by the ATC encoder 63 is the data transmission speed of the standard CD-DA format (75 sectors / sec). 1/8, which is reduced to 9. 3 7 5 sectors / sec, and this compressed data is continuously written into the memory 64. This compressed data (ATC data) is sufficient to perform one sector recording for every eight sectors as described above, but such eight sector recording is practically impossible, and continuous sector recording as described later is performed. This record is divided into clusters by a predetermined number of sectors (for example, 3 2 sectors + several sectors) during the rest period, and is recorded in the same data transmission speed (75 sectors / sec) as the standard CD_DA format Paragraph proceed. In the memory 64, corresponding to the above bit compression (please read the precautions on the back before filling in this page) &quot; va 1 Printed by the Consumer Labor Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs

The degree is the quasi-A speed of the outgoing bank for reading the capital and entering the standard. The DI sending is based on the speed ID. The feed is rounded up and is in the low DC segment, but it is C. The sound is divided between the quasi and the second period. Row. / C speed stop second speed and enter the recording area T to send the rest \ Send degree is recorded in fan A recording area transmission speed, the record of the fan material transfer time type 8 type seconds with 5 resources of the mold \ mold \ pack 7 rooms Film} recorded 5 body areas, 3 instant discs in mind 7 standing fan one at a time. The 'speed, II, 5 and 9 within this degree of C in the 7 material description due to the line density 5 type description of the capital. Set a record of 7 seconds on the model 7 3 B to make a low movement \ {like. In this way, the reading of the recording area is the same as that of the 9th input. The writing speed of the fan speed type is recorded at the same frame rate of 5th. Spreading points D This paper scale is applicable to the Chinese National Standard (CNS) A4 specification (210X 297 mm) 16 A7 B7 printed by the Employees ’Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 5. Description of the invention (l4) by Jiyi Body 6 4’ The above-mentioned (instantaneous) transmission speed of 75 sectors / sec is read in segments of the ATC sound data, that is, the recorded data is provided to the encoder 63. Here, in the data row supplied from the memory 64 to the encoder 65, the unit of continuous recording in one recording is a cluster formed by a plurality of sectors (for example, 32 sectors) and the front and rear positions of the cluster The number of sectors used for cluster connection. The sector for cluster connection is set to be longer than the interleaving length of the encoder 65, so that the interleaving does not affect the data of other clusters. The encoder 65 is based on the memory 64 described above, and applies error correction encoding processing (given parity and interleaving processing) or E FM encoding processing to the recording data supplied in segments. The recording data encoded by the encoder 65 is supplied to the head drive circuit 66. The magnetic head drive circuit 66 is connected to the magnetic head 54 and drives the magnetic head 54 by applying a modulated magnetic field to the magneto-optical disk 1 corresponding to the above recorded data. In addition, the system controller 57 performs the control of the billion body as described above, and at the same time, through the control of the billion body, the above-mentioned recording data read by the memory 6 4 in segments is continuously recorded Control the recording position on the recording track of the optical disk. The control of the recording position is managed by the system controller 57 to manage the recording position of the above-mentioned recording data read by the “E-body” 64 segment, and the control of the recording position on the recording track of the designated optical disk 1 The signal is supplied to the servo control circuit 56 to proceed. Next, the reproduction system of the recording and reproducing unit of the optical magnetic disk will be described. This reproduction system reproduces 1 record data continuously recorded on the recording track of the optical magnetic disk 1 through the above recording system, and has a recording track through the optical head 5 3 and a recording track of the Jiang optical disk 1 through the laser light. Scanning, the paper size obtained is in accordance with Chinese National Standard (CNS) Λ4 specifications (210X 297 male thin) (please read the notes on the back before filling out this page),-· * -17-Printed by the Staff Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs Install A 7 B7_______ V. Description of the invention (15) The regenerative output is supplied to the decoder 71 by the RF circuit 5 5 2 value. At this time, not only the magneto-optical disc, but also the disc dedicated for the reproduction of the compact disc. The decoder 7 1 corresponds to the recording system encoder 65 described above. For the reproduction output converted by the RF circuit 5 5 2, processing such as the above encoding process or E FM encoding process for error correction is performed. The B-mode stereo sound mode ATC sound data is reproduced at a transmission speed of 75 sectors / second faster than the normal transmission speed of the B-mode stereo sound mode. The reproduced data obtained by this decoder 7 1 is provided to the memory 7 2 »The data writing and reading of the memory 7 2 are controlled by the system controller 5 7, and the decoder 7 1 uses 7 5 sectors / The reproduction data supplied at the transmission speed of seconds is written in sections at the transmission speed of 75 sectors / second. In addition, this megabyte 7 2 is the regular reproduction of the reproduction data written in sections at the transmission speed of 75 sectors / second in the normal mode of the stereo mode in B mode. 3. 7 5 sectors / second The transmission speed is continuously read. The system controller _5 7 writes the regenerated data into the memory 7 2 at a transmission speed of 75 sectors / sec. At the same time, the above-mentioned regenerated data from the memory 7 2 'is executed with the above 9. 3 7 5 sectors / Memory control of continuous reading of transmission speed in seconds. In addition, the system controller 57 performs the above-mentioned memory control, and at the same time, through the memory control, the above-mentioned reproduced data written in sections by the memory 72 is continuously reproduced from the recording track of the optical disk Control the regeneration position. The control of this recycling position is controlled by the system. This paper standard is applicable to the Chinese National Standard (CNS) Α4 specification (210Χ297 mm) (please read the precautions on the back before filling this page), νβ printed by the Employee Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs Equipped with A7 B7 5. Invention description (ie) Device 5 7 manages the reproduction position of the above-mentioned reproduction data read from the memory 7 2 segment, and specifies the reproduction on the recording track of the optical disk 1 or the disk 1 The control signal of the position is given to the servo control circuit 56 to proceed. It has been recalled from the head 7 2 as a B-mode stereo sound mode A T C sound data that continuously reads the reproduced data at a transmission speed of 9. 3 7 5 sectors / sec. A T C sound data is provided to the ATC decoder 73. The ATC decoder 73 corresponds to the AT C encoder 63 of the above recording system, and the operation mode is designated by the system controller 57, for example, the B mode of the stereo sound mode ATC data is expanded by 8 times the data (bit When the element is expanded), the 16-bit digital audio data is reproduced. The digital audio data of the ATC decoder 73 is provided to the D / A converter 74. The D / A converter 74 converts the digital audio data supplied by the ATC decoder 73 into an analog signal to form an analog audio output signal 801. The analog sound signal A out obtained by the O / IN converter 74 is output from the output terminal through the low-pass filter 75. Next, the IC card recording unit of the compressed data recording and reproducing device will be described. The analog sound input signal A IN from the input terminal 81 is supplied to the A / D converter 8 3 through the low-pass filter 8 2 to be quantized. The digital audio signal obtained by the A / D converter 62 is sent to a variable bit rate encoder called an additional compressor 8 4 which performs encoding of average information volume, etc., and performs processing of encoding the average information volume. This processing is carried out with the reading and writing of the data of 85 million records. The additional compressor 8 that encodes the average amount of information, etc. 8 Variable bit rate JE reduction encoding data is based on the paper standard applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) -19 A (please read first (Notes on the back and then fill in this page)-° A7 ___B7 5. Description of the invention (17) The IC card interface circuit 8 6 is recorded on the IC card 2. Of course, in the present invention, variable bit rate compression such as average information amount coding is not performed, but by increasing the size of the orthogonal transform, the information group on the frequency axis with secondary information is floated and, or It is also possible to broaden the bandwidth of the quantized noise generating information group and record at a lower bit rate positioning rate. Here, the compressed data (ATC data) generated by the decoder 71 of the reproduction system of the above-mentioned magneto-optical disk recording and reproduction unit is directly sent to the memory 85 of the IC card recording unit without being expanded. This data transfer is so-called high-speed copying, and the system controller 57 performs this by controlling the memory 85 or the like. However, it is also possible to send the compressed data from the memory 72 to the memory 85. Change the bit rate mode, reduce the bit rate, and record on the magneto-optical disc or record on the IC card from the optical disc is suitable for recording the IC card with a high capacity unit price. This is fine at any bit rate, and it is better to accompany a sampling frequency that does not need to be the same sampling frequency. Printed by an industrial and consumer cooperative of the Central Standardization Bureau of the Ministry of Economy -------- &lt; Packing—— (Please read the precautions on the back before filling out this page) Next, the so-called high-speed digital copying operation will be explained. First, at the time of so-called high-speed copy, the operation of the copy operation key of the operation unit 58 is input via the keyboard, and the system controller 57 executes the predetermined high-speed copy control processing operation. Specifically, the data compressed by the above-mentioned decoder 71 is directly sent to the memory 8 5 of the IC card recording system, and is subjected to variable bit rate encoding through a chase compressor 8 4 that encodes the average amount of information. The IC card interface circuit 86 records on the IC card. Here, when the magneto-optical disc 1 records the B-mode stereo audio mode ATC data, the decoder 71 can continuously read 8 times the compressed data. Therefore, at the time of the above high-speed copying, the Chinese National Standard (CNS) A4 specification (210X 297 mm) is applied to the paper standard of the optical disk 1 which is quite practical. _ 20-A7 B7 Printed by the Employees Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs V. Description of the invention (18) • 1 time 8 times (at the time of B mode, Γ, · —body sound mode) can be 1 1 consecutively compressed data to encode this direct average amount of information or low bit rate 1 | One of them is recorded on the IC card 2 at a rate, so it can achieve 8 times higher 1 I speed copy 0 and the bit rate of the copy speed when the compression mode is different. Please read 1 1 | different. Copying can be done at a barrel speed above the bit rate. 0 Read back 1 1 At this time, the optical disk 1 is rotated at a speed several times the fixed speed. Note I 1 Drive 〇 Matter 1 I 1 again The above optical disk In Figure 1, as shown in Figure 2, at the positioning speed, fill in the data of the compression rate and encoding of the recording rate of the loading rate, and at the same time, add the data to the additional page 1 I compress and expand the information group 3 When recording the variable bit rate compression and encoding The amount of data 1 I (that is, the data recording capacity necessary to record the IC card 2) 1 1 | 〇 Through this step &gt; For example, the IC 1 is ordered in the tune recorded on the optical disk | Card 2 can The number of recorded songs or combinations of songs can be read immediately by reading 1 1 of this amount of information. Of course 0 is known. Of course non-variable bit rate mode and additional compression operation of low bit rate mode through fixed bit 1 1 rate. Compression and expansion of the letter 1 i information group 8 4 to be carried out. In reverse, the IC card is not only a variable bit rate bit 1 I compression coded data is also recorded through a positioning rate Meta compression code 1 1 1 The amount of data in the data can be quickly learned from the IC card 2 on the optical disk 1 1 1 I The amount of data when sending Qu Ju and other data to the record 0 Of course 1 in the IC card 2 Not only is the data compressed with variable bit rate bit compression encoded 1 1 can also be recorded—. The data compressed with bit compression at the positioning rate 〇1 1 Here, FIG. 3 shows the compressed data record composed of the above FIG. 1 and / or / 1 I or the frontal appearance of the regenerating device 5, and equipped with optical disks and optical disk inserts 1 1 The paper size is universal Chinese National Standard (CNS) A4 specification (210X297 mm) 21-B7 B7 M Printed by the Ministry of Central Falcon Bureau Beigong Consumer Cooperative Fifth, Invention Description (ig) Entry section 6 and IC card insertion slot 7. Of course, the disc and the IC card can be combined separately, and the signal can be transmitted by cable. Next, high-efficiency compression coding will be described in detail. That is, for high-efficiency coding techniques that use bandwidth division coding (SBC), adaptive transform coding (ATC), and adaptive bit allocation techniques for input digital signals such as audio P CM signals, refer to FIG. 4 and later In the specific high-efficiency encoding device shown in FIG. 4, first, while the input digital signal is divided into complex frequency bands, the adjacent 2 frequency bands of the lowest domain have the same bandwidth, and the higher high frequency band In the middle and higher bands, the wider the bandwidth, the orthogonal transformation is performed in each frequency band, and the frequency spectrum data obtained in the low frequency domain is considered in the low domain. The so-called critical bandwidth of the human hearing characteristics will be considered later. At the time, considering the floating efficiency of the information group, the critical frequency band is subdivided into the frequency band, and the bit is appropriately encoded. In addition, in the embodiment of the present invention, before orthogonal transformation, the block size (block length) is appropriately changed according to the input signal, and floating processing is performed in units of the block. That is, in Fig. 4, at the input terminal 100, for example, when the sampling frequency is 44. 1 kHz, a sound P C M signal of 0 to 22 kHz is supplied. This input signal is divided into 0 ~ 1 1 kH ζ frequency band and 1 1 kHz ~ 22 kHz frequency band (high domain), ◦ ~ 1 1 kHz frequency band signal system by frequency band dividing filter 1 0 1 such as so-called QMF filter Also divided by the so-called QMF filter band division filter 102, divided into 0 ~ 5. 5kHz frequency band (low range) and this paper standard is applicable to China National Standards (CNS) A4 specifications (210X297 mm) ~ ~ one-22 -(Please read the precautions on the back before filling out this page) B7 B7 Printed by the Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economy V. Invention Instructions (20) 5.5 kHz band (mid-range). The signals of each frequency band generated by the frequency band dividing furnace wave 101 '1 0 2 are sent to the orthogonal transform block size determination circuit 106 to determine the block size of each frequency band. In this orthogonal transformation block size determination loop 106, the length of the "block size" is, for example, a length of 1.1 milliseconds as the basic length, and this is the length of the maximum block size. When the signal is quasi-stationary in time, the maximum value of the orthogonal transform block size is 1 1 · 6 ms. The frequency resolution is increased. When the signal is non-stationary in time, it is less than 1 1 kH 2 The frequency band is improved by dividing the orthogonal transform information group by 8 points.

Here, the above-mentioned input digital signal is used as a method of dividing a complex frequency band. For example, a QMF filter is described in 1976 RECrochiere Digit a 1 coding of speech in subbands Bell Syst. Tech. J. Vol. 55, No. 8 1976 . Also in ICASSP 83, BOST ON Polyphase Quadrature F i11ters-A new subband coding t e c h n i q u e J o s e p h H · R o t h w e i 1 e r, the method of bandwidth filtering and segmentation is described. Furthermore, in FIG. 4, the output of the band division filters 101 and 102 is provided to each orthogonal transform circuit 103, 104, 105 for each band signal. At the same time, in the above orthogonal transform size determination loop 106, the determined packet size is supplied to each orthogonal transform loop 1 0 3, 1 0 4, 1 0 5, and the filter output is corresponding to the block size of the block, Perform orthogonal transform processing. Figure 5 shows the size of the orthogonal transform information set. In the low and middle domains, choose 11.6ms (long paper size applies to the Chinese National Standard (CNS) Α4 specification (ZlOX297mm) (please read the back Note: fill in this page again), τ 23-WS Central Standards Bureau WS; industrial and consumer cooperatives printed A 7 B7 V. Invention description (21) mode) or one of 2.9ms (short mode), high domain Select one of 11. 6ms (long mode) or ^ 45ms (short mode). The determined size information of the orthogonal transformation block is taken out from the terminal 1 1 1 and sent to the decoding circuit. Here, as the orthogonal transformation described above, for example, the input sound signal is grouped in a predetermined unit time (frame), and each group of information is subjected to a fast Fourier transform (FFT) to discrete cosine Transform (D CT), change the discrete cosine (MDCT), etc., transform the time axis to the frequency axis and perform orthogonal transform. The MD C T is described in ICASSP 1987 Subband / Tranform Coding Using Filter Bank Designs Based on Time Domain Aliasing Cancellation J. P. Princen A. B. Bradley Univ. Of Surrey Royal Melbourne Inst, of Tech. The bit allocation calculation loop 1 0 7 is based on the frequency band divided by the critical band and the floating of the information group, and the masking amount considering the so-called masking effect consideration critical band and the divided frequency band of the information group floating is obtained. According to the masking amount and the critical The energy or peak value of the divided frequency bands in which the frequency band and the information group float, etc., is obtained as the number of bits in each frequency band. In the adaptive bit allocation coding loop 108, in each frequency band of the above bit allocation calculation loop 107, each spectrum data (or MDCT coefficient data) corresponding to the number of allocated bits is requantized. The data encoded in this way is taken out through the output terminal 1 1 〇. Next, Fig. 6 is a block circuit diagram showing a schematic configuration of a specific example of the above bit allocation calculation circuit 107. In this picture 6 'in the input, the paper size is applicable to China National Standard (CNS) Α4 specification (210Χ297mm)

{Please read the precautions on the back before filling in this page. J • Order · -24-Printed by the Ministry of Economic Affairs Central Standards Bureau Negative Consumers Cooperative A7 B7 V. Description of the invention (22) Terminal 2 1 of the 'supplied by the above The spectrum data on the frequency axis of the orthogonal transform loop 1 〇3, 104, 105. The input data on this spectrum axis is sent to the energy calculation circuit 2 2 of each frequency band. The above-mentioned masking amount and the energy of the critical frequency band and the division of the information group floating are considered. The sum is obtained. Instead of each energy in this frequency band, the peak value with the amplitude value, the average value, etc. are used. As the output of the energy calculation circuit 22, for example, the frequency spectrum of the sum value of each frequency band is displayed as S B in FIG. 7. However, in FIG. 7, for the sake of simplification of the illustration, the above-mentioned masking amount and the number of divided bands considering the critical band and the block floating are expressed as 12 bands (B 1 to B 1 2). Here, in order to consider the effect caused by the so-called masking of the above-mentioned spectrum S B, the predetermined superposition function is attached to the spectrum S B, and an additional superposition (convolution) is applied. Therefore, the output of each energy calculation circuit 22 in the above frequency band, that is, each value of the spectrum S B is sent to the convolution filter circuit 23. The convolution filter circuit 23 consists of a complex delay terminal that sequentially delays the input data, and a complex multiplier that multiplies the filter function (convolution function) by the output of these delay terminals (for example, corresponding to 2 5 of each frequency band) A multiplier), and an adder that takes the sum of the output of each multiplier. Through this convolution process, the sum of the parts shown by dotted lines in FIG. 7 can be obtained. However, the above-mentioned masking refers to the phenomenon that, due to the characteristics of human hearing, certain signals and other signals are masked and inaudible. Among the masking effects, there are time-axis masking effects generated by sound signals on the time axis. Masking effect simultaneously with the signal on the frequency axis. After this masking effect, even if there is noise in the masked part, the paper standard is applicable to the Chinese National Standard (CNS> A4 specification (210X297mm) (please read the precautions on the back and then fill out this page). Order-25- Printed by the Ministry of Economic Affairs of Central Central Bureau of Employee Consumer Cooperatives 29 ^ 6iiS A7 ____B7____ 5. Description of the invention (23) makes the noise inaudible. Therefore, in the actual sound signal, the noise within this masking range is tolerable Here, a specific example of the multiplication coefficients (filter coefficients) of the multipliers of the convolution filter circuit 23 is shown. When the coefficient of the multiplier M corresponding to any frequency band is 1, By setting the multiplier M-1 coefficient to 0.15, the multiplier M-2 coefficient to 0 · 0191, the multiplier M-3 coefficient to 0.0000, and the multiplier M + 1 The coefficient is 0_ 4. The multiplier M + 2 coefficient is 0.06, the multiplier M + 3 coefficient is 0.07, and the output of each delay element is multiplied to perform the convolution process of the above-mentioned frequency spectrum SB. Μ is any integer from 1 to 25. Then, the output of the above convolution filter circuit 23 is sent to A divider 24, the subtractor 24 obtains the level α corresponding to the allowable noise level (allowable noise level) described later in the above-mentioned field of convolution, by performing deconvolution processing as described later, Each frequency band presenting the critical band allows the level of the noise level. Here, the above subtractor 24 is supplied as an allowable function (a function representing the masking level) for obtaining the above level α. The function is increased or decreased to control the above level α. The allowable function is provided by the '(n — ai) function generation circuit 25 described below. That is, the level α corresponding to the allowable noise function is given by The number i given in the lower order of the critical frequency band is obtained by the following formula (1). A = S— (n — ai)... (1) This paper scale is applicable to the China National Standard Falcon (CNS) A4 specification ( 210X 297mm) (Please read the precautions on the back before filling in this page),-= 5 -26-Λ 7 Β7 Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economy V. Invention Instructions (24) * 1 I is here (1) where &gt; η »a is a fixed number and a &gt; 0 S It is convolved \ 1! The intensity of the processed Bark spectrum &gt; (1) where (Π. Ai) is the allowable 1 1 function 0 In this embodiment, let η = 3 8 »a = 1 &gt; There will be 1 I deterioration of the sound quality &gt; good coding. Please read 1 I above to obtain the above level a &gt; this data is sent to the divider to read back 1 1 2 6 〇 The divider 2 6 In &gt; the above-mentioned electric attention 1 1 level a in the above-mentioned convolution area is deconvoluted. Therefore, by performing this deconvolution processing, the mask spectrum can be obtained from the above item 1 1 and the level a described above. That is, the masked spectrum is allowed to fill in the noise spectrum. However, the above deconvolution processing requires complex calculations. In this example ^ 1 1 the simplified divider 2 6 is used for inversion. Convolution process 〇1 I Next, the above-mentioned masking spectrum system It is transmitted from the synthesis circuit 2 7 to the subtraction 1 I device 2 8 0 where the subtraction device 2 8 is provided by the delay circuit 2 9 for 1 order | The output of the calculation circuit 2 2 from the energy in each frequency band is described above The frequency 1 1 spectrum SB is supplied by the delay circuit 2 9 0. Therefore, the subtraction calculation of the masked frequency port and the frequency port SB is performed in the subtractor I 1 2 8 as shown in FIG. 8. The level of the masking spectrum MS shows the mask below the level Γ1 I The output generated by the subtractor 2 8 is through the allowable noise correction loop 1 1 I 3 0 through the output terminal 3 1 Take out the assigned bit, for example Meta information is sent 1 1 to the pre-recorded R 0 Μ etc. (not shown) 〇 This R 〇 Μ corresponds to the output of 1 1 through the above subtraction circuit 2 8 through the allowable noise correction circuit 3 0 ( The energy sum of the above frequency bands The difference of the output of the noise level setting means 1 1 different level) y The information of the number of allocated bits of each bit is output. Because of this 1 I The information of the number of allocated bits is sent to the above-mentioned white adaptive bit allocation coding circuit 1 0 8 1 1 This paper scale is applicable to the Chinese National Standard (CNS) A4 (210X 297 mm) -27-Impression of the Employees ’Consumer Cooperative of the Central Standards Bureau of the Ministry of Light Economy A7 B7 * '— — __________________________-. —— —-____ V. Description of the invention (25), each spectrum data on the frequency axis of the orthogonal transform circuits 103, 104, 105 is quantized by the number of bits allocated in respective frequency bands. That is, the emphasis is on the coding loop 108 of the adaptive bit allocation. The difference between the energy of each divided frequency band corresponding to the above-mentioned masking amount and considering the critical band and the floating of the information group and the output of the above-mentioned noise level setting means Quantize the allocated bits and quantize the spectrum data of each frequency band. However, the 'delay circuit 29 is based on the circuits before the synthesis circuit 27 described above, and is designed to delay the frequency spectrum S B of the energy detection circuit 22 by considering the amount of delay. However, when the above synthesis circuit 27 is synthesized, the data showing the so-called minimum audible curve RC supplied by the minimum audible curve circuit 32 as shown in FIG. 9 for the human auditory characteristics can be synthesized with the mask spectrum MS . In the minimum audible curve, when the absolute noise level is below the minimum audible curve, the noise will be inaudible. This minimum audible curve is different even if the encoding is the same, for example, the volume of the reproduction volume is different during reproduction, but in the real digital system, there is not much difference in the way of putting music such as 16-bit dynamic range. For example, when the quantized noise in the most audible frequency band near k Η z is inaudible, in other frequency bands, the quantized noise below the minimum audible curve level will be inaudible. Therefore, it is assumed that the use of noises such as the vicinity of 4 k Η ζ with the system zigzag length cannot be heard. 'Since the minimum audible curve and the masking band MS-are synthesized together, and the noise level is allowed to be allowed. " The flat line can be as shown by the diagonal line in FIG. 9. However, in the embodiment, the 4 k H ζ level of the above minimum audible curve is matched with, for example, the lowest level corresponding to 20 bits. In addition, the paper size of this picture is applicable to the Chinese National Standard (CNS) Α4 specification (210X297mm) {long ------ order ------ ^ (please read the precautions on the back before filling this page) A7 B7 Printed by the Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economy ^ V. Description of the invention (26) • 1 I 9 series simultaneously display the signal spectrum SS 0 1 1 and the above allowable miscellaneous correction circuit 3 0 »Based on the revised capital 1 1 Information such as the loudness curve sent by the output circuit 3 3 »The sound level output by subtracting 1 I from the above allowable miscellaneous 1 1 calculator 2 8 will be corrected. Here is the characteristic of the loudness 1 I line is related to human hearing characteristics Curve »Find the sound pressure of a frequency sound of the same magnitude as the pure tone of 1 k HZ reading 1 I for example &gt; Note by the curve connector 1 1 | Isosensitivity curve called loudness 0 again &gt; These loudness curves will be the same as those shown in Figure 9 1 1 丄 所The curve showing the minimum audible curve RC is the same as the one drawn. At this level, fill in the curve of the first degree of the loop. For example, in the vicinity of 4 k HZ, even if the sound page is at 1 k HZ · 1 1 pressure drop 8 / -W 1 0 d B also sounds like the size of 1 k Η 2 is reversed 1 1 in the vicinity of 5 0 Η Z is not less than 1 k Η Z The sound pressure fSj is about 1 5 d B 1 1 when the M method hears equal The sound 〇 Therefore, it is known that the noise (allowable noise level) that exceeds the level of the above-mentioned minimum audible 1 set I curve is preferably the one with the frequency characteristics assigned to the curve of m 1 such I loudness curve. This knows the consideration 1 1 The above-mentioned equal loudness curve correction allows the noise level to be suitable for human hearing characteristics 1 丄 0 Ί is used here as a correction information output circuit 3 3 According to the above code back to 1 I way 1 0 8 for quantization Detection output at the time of output information volume (data volume) »1 I and The error information between the giant value of the bit rate of the final encoded data can be corrected by the above content 1 1 | the allowable impurity level can also be 0. This is for all the bit allocation unit information 1 1 group Λ pre-time-time white adaptation The total number of bits 1 1 obtained by bit allocation is determined by the bit rate of the final encoded output data-the number of positioning bits 1 1 (giant scale value) There is an error. The error is divided into 0 and 1 I bit is redistributed. Yuan Zhe 0 means * the difference will be 1 when the total number of allocated bits is less than the giant standard value. 1 The paper size is applicable to the Chinese National Standard (CNS) 84 specifications (210X 297 mm) -29-Central Standard of the Ministry of Economic Affairs Falcon Staff Consumer Cooperative Insignia A7 B7 ---- * ----—---—____ V. Description of invention (27) Bit allocation is attached to each unit information group, and the total number of bits allocated is higher than the target value When it is more, the difference between the number of bits in each unit of information is reduced. In order to carry out these steps, the error of the above target value of the total number of allocated bits is detected to correspond to this error data, and the correction information output circuit 33 outputs the correction data for correcting the number of allocated bits. Here, when the error data indicates that the number of bits is insufficient, 'the reason that the unit information block uses a large number of bits' indicates that the amount of the data is greater than the target value. In addition, when the above error data shows the data of the remaining bits, the above-mentioned data with fewer bits per unit information group may be sufficient. It can be presumed that the amount of the above data is less than the above target value. Therefore, the above correction information output circuit 33 corresponds to this error data, and the allowable noise level output by the above-mentioned subtractor 28 is output as data of the above-mentioned correction value based on the information data of the above-mentioned loudness curve, for example. Since the correction value as described above is transmitted to the allowable noise correction circuit 30, the allowable noise level by the subtractor 28 is corrected. In the above-mentioned system, as the main information, the data of the orthogonal transform output spectrum processed by the auxiliary information and the scale factor of the auxiliary information display information group floating state can be obtained. Long, sent by the encoder to the decoder. Here, the aforementioned bit allocation calculation circuit 107 may be configured as shown in FIG. 10. This figure 10 'is used to explain the following effective bit allocation methods which are different from the bit allocation methods described above. The output of each MDCT circuit 103'104'105 of Fig. 4 is sent to the energy calculation circuit 301 which calculates the energy of each frequency band through the input terminal 3 0 0 'of Fig.10. This paper calculates the energy per frequency band. The paper standard is in accordance with Chinese Standard (CNS) A4 (210X297mm) (please read the precautions on the back and then fill out this page) Annual subscription -30-Employee consumption of the Central Standards Bureau of the Ministry of Economic Affairs Printed by the cooperative A 7 ______B7 V. In the description of invention (28), the energy per frequency band of the above critical frequency band or the high-range sub-divided critical frequency band is calculated by, for example, the second power average of the amplitude values within the frequency band Square root and so on. However, instead of the energy of each frequency band, the peak value or average value of the amplitude value may be used. As the spectrum of the sum of the frequency bands of the critical frequency band or the sub-critical band in the high domain output by the energy calculation circuit 301, for example, the frequency spectrum (Barker spectrum) SB shown in FIG. 7 is presented. Here, in this embodiment, the MD CT coefficient is expressed, when the number of bits used for transmission or recording is, for example, 1 kbit / block, in the cost embodiment, 1 kbit retention is used. Meta allocation pattern. In this embodiment, a plurality of bit allocation patterns for allocating the above-mentioned fixed bits are prepared. Through the nature of the signal, various choices can be made. In this embodiment, various patterns corresponding to the above-mentioned fixed 1k-bit short-time information blocks are distributed at various frequencies, and various patterns are held in the fixed bit distribution circuit 307. The fixed bits are allocated back to the circuit 307, and in particular, a plurality of patterns with different bit allocation rates in the middle, low and high domains are prepared. Then, the smaller the signal, the less the high-domain distribution is selected. In this way, the smaller the signal, the louder effect of high-range sensitivity reduction can be utilized. However, in this case, in terms of signal size, the full-band signal size can be used, but it is also possible to use, for example, the output of a non-truncated frequency division loop using a filter or an orthogonal transform output such as MDCT output. However, the above 1 k-bit (the number of usable bits) is set by, for example, the total usable number of bits input circuit 305. The total number of available bits can be input from outside. In addition, the output from the above energy calculation circuit 301 is also sent to the energy. The paper size is in accordance with the Chinese National Standard (CNS) A4 specification (210X 297mm) 'Eight binding ------ ^ (please read first (Notes on the back and then fill out this page) A 7 _ β7 ___ printed by the consumer cooperation of the Central Standards Bureau of the Ministry of Economic Affairs A. _ β7 ___ V. Description of the invention (29) Attached bit allocation circuit 3 0 6. In the energy-dependent bit allocation circuit 306, the energy-dependent bit allocation pattern is determined by the energy of each frequency band. The energy dependent bit pattern according to this energy is, for example, the greater the energy of the frequency band, the more bits can be allocated for allocation. In Fig. 10, the allocation rate of the fixed bit allocation pattern as described above and the allocation rate of the bit allocation attached to the Barker spectrum (spectrum S B) are determined by the indicator of the smoothness of the displayed signal spectrum. That is, in this embodiment, the output of the above energy calculation circuit 30 1 is sent to the spectrum smoothing calculation circuit 3 0 2, and in the spectrum smoothing calculation circuit 3 0 2, the adjacent value of the signal spectrum is calculated The sum of the absolute value of the difference between the sum of the signal spectrum and the value is used as an indicator. Once this index is determined, in the bit division rate determination circuit 304, the above division rate is determined. However, the split rate refers to a value that overlaps the bit allocation for changing fixed bit allocation and energy dependency. The division rate data of the circuit 3 0 4 determined by the bit division rate is sent to the multiplier 3 1 2 which supplies the output of the fixed bit distribution circuit 3 0 7 and the energy-dependent bit distribution circuit 3 0 6 The output of the multiplier 3 1 1. The outputs of these multipliers 3 1 2 and 3 1 1 are sent to the sum calculation circuit 3 0 8. That is, the fixed bit allocation and the energy bit value attached to each frequency band (critical band, or subdividing the critical band into a plurality of frequency bands in the high range) are multiplied by the above division rate, these 2 values It is added by the above sum calculation circuit 308, and the result of this calculation is composed of the output terminal (output terminal of bit allocation amount of each frequency band) 309 sent to the latter stage, which is used for quantization and encoding. This paper wave scale is applicable to the Chinese National Standard (CNS) A4 specification (210X297mm) (please read the precautions on the back before filling in this page) Order-32-Λ7 B7 Printed by the Employee Consumer Cooperative of the Central Bureau of Standards, Ministry of Economic Affairs (30) 1 | The bit allocation pattern at this time is shown in (b) of Figure 1 1 &gt; (b) of Figure 1 2. The quantized noise pattern corresponding to this is also shown in Figure 1 1 1 1 ( a) Figure 1 2 (a) ○ However, Figure 1 1 (a) J ('—, 1 I b) shows when the signal spectrum is flat. »Figure 1 2 (a) Please read 1 I, (b) is when the signal spectrum is displayed as a high index. Also, the reading of Fig. 1 1 ϊέ 1 1 I (b) &gt; Fig. 12 (b) in the figure QS shows the signal level dependence Meaning 1 1 The amount of bits in I points> Q f in the figure shows the matters in the bits of the fixed bit allocation points 1 1 Figure 1 1 (a) »Figure 1 2 (a) L in the figure shows Fill in the letter level袈 | In the figure, NS shows the noise reduction points of the signal level-dependent points. Hal chart page ··· // 1 1 N f shows the fixed bit allocation of the noise level 〇1 | To show the spectrum of the above signal Figure 1 1 in the case of a flat distribution. 1 in the pass 1 I. The bit allocation is often done through the fixed bit allocation of the Dori. It is used for the whole frequency band. 1 I. I get a large signal noise ratio. In the low domain and 1 1 I quotient domain, less bit allocation is used. This is still because the importance of hearing in this frequency band 1 I is small. 0 At this time, as shown in the figure QS of Figure 1 1) 1 丄By performing bit allocations (bits) where a number of signal levels are dependent »The noise level of the frequency band with a large signal Ί sign is selectively reduced. Therefore, the spectrum of the signal 1 | Selectivity also acts to allocate a larger I frequency With 〇1 1 1 when the signal spectrum is high as shown in Figure 1 2 shown in Figure 1 2 1 1 QS as shown in the figure t Due to the large number of signal levels depending on the bit allocation 1 1 (bit) The reduction of the quantized noise »is to reduce the noise of the extremely narrow frequency band (the frequency band shown in NS in the figure of FIG. 1 1 1 2) and the user. Therefore, 1 1 achieves the characteristics by inputting the signal with an arc spectrum At the same time, at the same time, if the paper standard is applicable to the Chinese National Standard (CNS) A4 specification (210X 297 mm) -33-Λ7 B7 Printed by the employee consumer cooperative of the Central Bureau of Standards of the Ministry of Economy V. Description of invention (31) 1 The bit allocation of dry fixed bit allocation is performed. 1 The noise of the wide frequency band is 1! Non-selective drop 0 1 | Return to Figure 4 »Explanation about the white adaptive bit allocation coding circuit y— *. 1 I 1 0 8 0 This embodiment Medium) For example, there are two types of bit rate modes, please read the 1 1 I type. For example, the A mode is 1 2 8 kb PS / C h η η e 1 B mode reading back 1 1 \ The mode is a half of the mode 6 4 kb PS / / C h η η e 1 〇 Note 1 I meaning I in the embodiment &gt; not only in the two types of models can also have a plurality of model items 1 I then fill out this package | first for the A model The coding method is explained. 0 1 αΠ Figure 1 3 Figure 1 1 1 4 is the division of the floating band of the display block in the A mode-specific example 〇1 | Figure 1 3 is the orthogonal transformation block size of 1 1 〇6 m S Figure 1 I 1 4 is the orthogonal transformation block size is divided into 4 parts in the low and middle domains and still divided into 1 order | When it is 8 copies, no matter what-the overall number of floating frequency bands of the entire group is 1 1 is the same It is divided into 5 2 frequency With 〇, then the file is divided by the frequency band and output 1 1 The low domain of each frequency band is 2 0 in the middle of the domain, each of which is 16 of 1 -i information /// m Floating this number is not orthogonal The relationship of the transform block size is added by Γ to determine the reason. The size of the orthogonal transform block varies independently in each frequency band. • frnr m 1 I Problem 0 For example, only the low domain 1 1 6 m S is divided into 4 blocks of block 1 I Inch-in-barrel domain is 1 1 6 m S when the floating size of the information group will be letter \ 1 | When the floating frequency band of the information group is in the low domain as shown in Figure 1 4 and when the medium and high domain is shown in Figure 1 3 Ground 1 1! The number is based on the overall tlsz. And-*-is 5 2 〇 adaptive bits 1 1 assigned to the coding loop 1 0 8 among the 5 2 floating bands of each information group 1 1 The ratio is given to the information due to the long number The spectrum data is quantized and coded according to the ratio assigned to 1 1 due to the digital length. 1 1 This paper scale applies the Chinese National Standard (CNS) A4 specification (plus 297 mm). I 34-Printed by the consumer cooperation of the Central Standards Bureau of the Ministry of Economic Affairs at B7 ----. Ink-V. Description of invention (32 ) The coded data is taken out from terminal 1 1 0, recorded or transmitted. Next, the encoding method of the B mode will be described. Β mode is because the bit rate is half of that for Α mode. If it is encoded in the same way as Α mode, the amount of auxiliary information (scale factor, word length, etc.) will not change, only the main information (spectrum data) The amount has been reduced, and the result of comparison with the A mode is that in the total information amount, the proportion of auxiliary information becomes larger, and the coding efficiency decreases. When the bit rate is half, not only the main information volume, but also the auxiliary information volume is reduced by half, or reduced to less than half. In this embodiment, the amount of auxiliary information in the B mode is halved for the A mode, and the value of the auxiliary information is jointly held between two temporally adjacent information groups floating to achieve the reduction of the amount of auxiliary information . That is to say, the amount of auxiliary information in mode A is basically equal to the number of floating bands of the block, which is 52 / 11.6ms. However, in mode B, the direction of the time axis of the floating band of the block is expanded. 5 2/2 3 · 2 ms, when comparing the amount of secondary information in the same time, it is half the amount for A mode. Fig. 5, Fig. 16, and Fig. 17 are a specific example of the floating band of the B mode division block. Fig. 15 shows the case where the temporally adjacent two orthogonal transformation blocks are in long mode. The range enclosed by the solid line is the orthogonal transformation block, and the range indicated by the slash is a floating block. frequency band. That is, this block floating frequency band is a combination of the two adjacent frequency bands in the time axis direction of the block floating frequency band in the A mode in FIG. 13, and the frequency band division in the frequency axis direction is exactly the same as in FIG. 13. Fig. 16 shows the case where the size of the orthogonally transformed two information blocks of the temporally adjacent two information blocks are all in the short mode, and the paper scale enclosed by the solid line is applicable to the Chinese National Standard (CNS) A4 specification as in Fig. 15 (210X297mm) (Please read the precautions on the back before filling in this page) 裟 ·, νβ -35-Printed by the Consumer Standardization Bureau of the Central Bureau of Economic Affairs of the Ministry of Economic Development Λ7 B7 V. Invention description (33) The range is orthogonal transformation information Group, the range indicated by slashes is a block floating band. That is, this block floating frequency band will be combined into two adjacent frequency bands in the time axis direction of the block floating frequency band in the mode A of FIG. 14, and the frequency band division in the frequency axis direction is exactly the same as FIG. 14. Figure 17: The size of the orthogonal transform blocks of two temporally adjacent two blocks is different, that is, the display of the combination of short mode and long mode, the same as the orthogonal transformation block , The range indicated by slashes is a block floating band. The orthogonal transform block size is the short mode (in the range of 0 ~ 11_6ms in FIG. 17 and the low and high fields of 11.6 ~ 23.2ms in FIG. 17), which is the same as the short mode above. At the same time (Figure 16), that is, the two adjacent frequency bands in the time axis direction of the information group floating frequency band in the mode 14A of Figure 14 are combined into one, and the frequency band division in the frequency axis direction is exactly the same as in Figure 14 . Conversely, in terms of the orthogonal transform information block size is the long mode information block (Figure 1 7 0 ~ 11.6ms low domain, high domain and 11. 6 ~ 23.2ms mid domain, high domain) Because the frequency band cannot be aggregated on the time axis, the two adjacent frequency bands in the frequency axis direction are exceptionally combined into one. The frequency band division in the time axis direction is exactly the same as in FIG. 13. In this way, in the B mode, the number of secondary information is reduced by half compared with the A mode. By commonizing the floating frequency bands of the information groups adjacent to the time axis direction or the frequency axis direction, the result can prevent the bit rate The reduction of the main information accompanied by the reduction in order to improve the coding efficiency. Here, FIG. 18 shows a specific example of the adaptive bit allocation coding loop 1 0 8 in the case of B mode. The terminal 4 0 1 is given an orthogonal transformation. The paper scale is applicable to the Chinese National Standard (CNS) A4 specification ( 210X 297mm) (Please read the notes on the back before filling this page)-一 °

T -36-Printed by Beigong Consumer Cooperatives, Central Bureau of Standards, Ministry of Economic Affairs Λ7 _B7__ V. Description of the invention (34) Information group size information ’The terminal 4 0 2 is given the spectrum information (M D C T coefficient) of the two information components. The size information of the orthogonal transformation information group is sent to the scale factor reset circuit 4 0 5 and the word length reset circuit 4 0 6. The above spectral data (MDCT coefficient) is sent to the quantizer 4 0 8 ° , Supplied by the input circuit 403, the scale factor A set in each band in the A-mode block floating band division is set in the scale factor reset circuit 405, as described above, common The two information group floating band values are aggregated, and then the scale factor B for the B mode is set. Usually, two scale factors A are selected as the common scale factor. Similarly, via the input circuit 404, the scale factor A set in each band in the A-mode block floating band division is set in the word-length reset circuit 406, and then set in mode B. Zigzag length B. When the word length is common, for example, two scale factors A are selected as the larger ones. Others can also use the average of two word lengths A, etc. However, the scale factor A and the word length A are based on the information of two separate information components (2.3.3m s) as a unit, and are sent to the above-mentioned reset circuit 4 0 5, 4 0 6. Next, in the word length reset circuit 406, the reset word length is in the total bit number correction circuit 407, and the error of the total bit number generated is corrected by resetting. The scale factor B and the word length B are set to the quantizer 4 0 8 and the encoder 4 0 9 at the same time, which is used when the spectrum data is quantized. The quantized and coded spectrum data is used as the coding data B, which is taken out from the terminal 4 1 0. This paper is applicable to China National Standard (CNS) A4 (210X297mm) &quot; '-37-(please read the precautions on the back before filling out this page) 袈. 、 11 Employee Consumption of the Central Bureau of Economic Affairs of the Ministry of Economic Affairs Cooperative cooperative printing A7 __B7 V. Description of invention (35) At this point, the function of the encoding device of the encoding of the time series P CM signal will be explained. Next, a description will be given with reference to the specific example of FIG. 19 when the coded data of the A mode is converted into the coded data of the B mode 'and when the coded data of the B mode is converted into the coded data of the A mode'. First, when converting from A mode to B mode, in FIG. 19, coded data a coded in A mode is given to input terminal 501, and coded orthogonal transformation information block is given to input terminal 503. Size information. The information of the size of the orthogonal transformation block is converted into the B mode from the code representing the size of the orthogonal transformation block of the A mode in the transcoder 5 0 8 and sent to the bit allocation calculation circuit 5 0 7 and then by the output terminal. 5 1 3 Remove. The function of this transcoder 508 is to encode two sets of information. The A-mode orthogonal transform block size information 'is represented by the B-mode code, which means that there is no change in the content of the two. The above-mentioned coded data A is sent to the adaptive bit allocation decoding circuit 5 0 5 'of mode A for decoding and inverse quantization, and is restored to spectrum data. The obtained spectrum data is sent to the bit allocation calculation circuit 507 for bit allocation. This bit allocation calculation circuit 5 0 7 has the same function as the above bit allocation calculation circuit 1 0 7. The spectrum data recovered here is sent to the adaptive bit allocation coding loop 5 0 6 'of B mode to perform the aforementioned B mode coding. The quantized and coded encoded data B is taken out from the output terminal 51. In this way, the conversion from the a mode to the B mode can be performed by a simple circuit combining the decoding circuit of the A mode and the encoding circuit of the b mode, and high-speed conversion can be performed. Then, when changing from B mode to A mode, the paper standard is also applicable to China National Standard Falcon (CNS) A4 specification (210X 297mm) (please read the precautions on the back before filling out this page). Installed., Tr Λ7 B7 Printed by the Ministry of Economic Affairs, Central Standards and Staff Consumer Cooperatives 5. Description of invention (36) * 1 I in &gt; Enter 4 mountain terminal 5 1 2 to give coded data B 1 coded! » The input terminals 5 1 4 are given the size of the coded positive exchange block 1 1 signal 0 The information of the size of the orthogonal transformation block is in the code converter 5 0 9 &gt; 1 | Please 1 by representing the orthogonal transformation of the B mode The code size conversion of the block size is A mode. First, M 1 1 read 1 and send it to the format conversion circuit 5 1 0 and then take it out from the output terminal 5 0 4. The function of the code converter 5 0 9 is carried out with the code converter Note 1 1 I 5 0 8 is exactly the opposite Action> Divide the encoded B-mode orthogonal transformation information into 1 1 -L information 〇 group size information into A mode 2 information component code and fill in too i 袈 1 I The above coded data B is sent to the format The conversion circuit 5 1 0 keeps the data of the 1 1 code directly converted to the format of the A mode. The output terminal 5 0 2 1 I takes out 0 at this time between the two. ^ TTf: m The actual bit rate changes in the A mode. 1 grid. In the formula, only about half of the main information is used. Also, as described above, from 1 1 IA mode to B mode, it can also be decoded and then allocated bits. Then 1 1 | Encode but even if the actual amount of information changes The conference re-quantizes to degrade the sound quality of 1 丄 so from B mode to A mode format conversion> 1 Only need to apply a simple arrangement of encoding • feaA change processing and can be converted at high speed 1 1 1 Next, the decoding device will be described. In the input terminal 1 1 I sub 2 1 0 in FIG. 2 0, the encoded data of 1 1 I on the frequency axis obtained from the output terminal 1 1 0 in FIG. 4 is supplied. The m Am code Data 9 is first sent to the white adaptive bit allocation 1 1 decoding circuit 2 0 8 to perform decoding processing and restore to the frequency port on the frequency axis. 1 1 material 〇 1 1 input terminal 2 1 1 among y supplied by the above encoding Orthogonal variation of the device 1 1 This paper scale is applicable to the Chinese National Standard Falcon (CNS) A4 specification (210X 297 mm) (37) Change the size information of the information group for each inverse orthogonal transform circuit 203 '204, 205 of each frequency band. Here, in the above frequency band data, the data of 0 to 5. 5 kHz frequency band data is sent to the inverse orthogonal Transform circuit 2 03, 5. 5 ~ 1 1 kHz band data is sent to the inverse orthogonal transform circuit 204 ′ 1 1 ~ 22 kHz band data is sent to Orthogonal transform loop 2 0 5, where these loops correspond to the above-mentioned orthogonal transform packet size information. Inverse orthogonal transform processing for each frequency band is performed. Then, the above-mentioned inverse orthogonal transform loop 2 0 4, 2 0 5 The output is synthesized by a synthesis filter, and the output of the inverse orthogonal transform circuit 2 0 3 and synthesis filter 2 0 2 is synthesized by the synthesis filter 2 0 1 to become a regenerated signal, which is taken out by the output terminal 2 0 0 . However, the embodiments are not limited to the above-mentioned embodiments. For example, it is not necessary to integrate one of the above-mentioned recording and reproducing media and the other recording and reproducing media, and a data transmission cable may be connected therebetween. Moreover, for example, it is not only applicable to sound PC signals, but also applicable to signal processing devices such as digital sound (speech) signals or digital signals. In addition, it may be configured not to perform the synthesis processing of the minimum audible curve described above. At this time, the minimum audible curve generation circuit 3 2 and the synthesis circuit 2 7 are not required. After the output of the subtractor 24 is deconvoluted by the divider 26, it is sent to the subtractor 28. In addition, there are many methods of bit allocation. The simplest fixed bit allocation or the simple bit allocation based on the energy of each frequency band of the signal or the bit allocation combining a fixed portion and a variable portion can be used. [Effects of the invention] This paper scale is applicable to the Chinese National Standard (CNS) Α4 specification (2Ι0Χ297mm) (Read the precautions on the back and then fill out this page). Νβ -40-B7 B7 Central Standards Bureau of the Ministry of Economic Affairs Printed by Employee Consumer Cooperative V. Description of the invention (38) From the above description, it is clear that according to the compressed data recording and / or reproducing device, method or recording medium of the present invention, regardless of the different bit rates with complex mode, With the same sampling frequency, it is possible to prevent the complexity of the sampling frequency signal generation circuit and the hardware scale from increasing when the complex sampling frequency is held. Also, when encoding at a low bit rate, it is adjacent in the time direction In the complex information group, or the so-called information group floating frequency band in the direction of the frequency axis within the same time information group, the auxiliary information is shared, and the amount of auxiliary information can be reduced through recording or transmission Reduced copies are allocated to the main information and improve coding efficiency. Also, the compressed signal for the high bit rate mode is recorded for a longer time and converted to low When recording in rate mode, there is no need to convert the original compressed signal from the frequency axis to the time axis. Only the data on the frequency axis is converted to obtain a low bit rate compressed signal. Orthogonal transformation, inverse orthogonal transformation and frequency band division can be omitted / Synthesis filter process to perform high-speed signal conversion. [Figure 1] A block circuit diagram showing a configuration example of a recording and reproducing apparatus showing one embodiment of the compressed data recording and / or reproducing apparatus of the present invention. Figure 2] A photo showing the recording contents of the optical disk 1 and the IC card [Figure 3] The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297mm) (Please read the precautions on the back before filling this page ), Vs. fine 6〇8 Μ Β7 V. Description of the invention (39) A schematic front view showing an example of the appearance of this embodiment. [FIG. 4] A specific example of an encoding device showing the high-efficiency sound encoding method of this embodiment Block circuit diagram [FIG. 5] is a diagram for explaining the size of the orthogonal transformation block in this embodiment [FIG. 6] A block circuit diagram showing the specific structure of the bit allocation algorithm function. [FIG. 7] A graph showing the frequency band of the divided frequency band considering each critical band and the floating of the information group. [Figure 8] A graph showing the masked spectrum [Figure 9] A graph of the masked spectrum combined with the minimum audible curve. [Figure 1 〇] _ The block circuit diagram showing the specific structure of the bit allocation method to achieve the second. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) (please read the precautions on the back before filling this page).

, -ST Ministry of Economic Affairs, Central Bureau of Standards, Employee and Consumer Cooperative Printing Co. -42-Ministry of Economic Affairs, Central Bureau of Standards, and Employee Consumer Cooperative Printed A 7 B7 V. Description of Invention (4〇) [Figure 1 1] In the second bit allocation method In the 'display signal spectrum is flat' noise spectrum and bit allocation. [Figure 1 2]. In the second bit allocation method, the "display signal spectrum index is high" noise spectrum and bit allocation. [Figure 13] The critical frequency band in the processing information group considering the A mode of 11.6ms, and the frequency and time relationship shown in the frequency band of the information group floating division into 52 parts (orthogonal transformation information group size is long mode) ). [Fig. 14] The critical frequency band in the processing information group considering the A mode of 11.6ms, and the frequency and time relationship shown in the frequency band of the information group floating division into 52 parts (orthogonal transformation information group size is short mode) ). [Figure 15] The critical frequency band in the processing information group considering the B mode of 23 · 2ms, and the frequency and time relationship shown in the frequency band of the information group floating division into 52 parts (the orthogonal transformation information group size is long Model). The size of this paper is applicable to the Chinese National Standard (CNS) A4 (210X297mm) (Please read the precautions on the back before filling this page)

-43-Printed A7 ____B7 by Zhengong Consumer Cooperative of the Central Bureau of Standardization of the Ministry of Economic Affairs V. Description of the invention (41) [Figure 16] Regarding the critical band in the processing information group considering the 23.2ms of B mode and the floating division of the information group into 5 The relationship between frequency and time shown in 2 frequency bands (orthogonal transform block size is short mode). [Figure 17]. Regarding the critical frequency band in the processing information block considering the 23.2ms of B mode, and the frequency and time relationship shown in the frequency band of the information block floating division into 52 parts (orthogonal transformation information block size is long mode) And a combination of short mode). [Figure 18] A block diagram showing a specific example of a B-mode adaptive bit allocation coding circuit. [FIG. 19] A block circuit diagram showing a specific configuration for high-speed conversion from A mode to B mode. [FIG. 20] A block circuit diagram showing a specific example of a coding device that realizes the high-efficiency coding technique of this embodiment. [Explanation of symbols] 1 ...... Optical disc 2 ...... IC card ^^ degree is applicable to Chinese National Standard (〇 奶) 6 4 specifications (2 丨 0 \ 297mm) (please Read the precautions on the back and then fill out this page). Installed.-° A 7 B7 Member of the Central Standard Falcon Bureau of the Ministry of Economic Affairs. Industrial and consumer cooperation Du Printed 5. Description of the invention (42) 3 ... Added compression and expansion function Information group 5 ...... Recording and reproducing device 6 ...... CD slot 7 ...... IC card slot 5 3 ..... optical head 5 4 ..... magnetic head 5 6 ..... servo control circuit 5 7 ..... system controller 62, 83 .. A / D converter 63 ..... ATC encoder 64, 72, 85. • memory 6 5 .. ... encoder 66 ..... head drive circuit 7. 1 .... decoder 73 .... ATC decoder 7 4 ..... D / A converter 100. · Audio signal Input terminals 101, 102 '... Band-splitting filter 10 3. ·················································································· low domain Orthogonal Transform Loop (MDCT) 10 6 .... Orthogonal Transform Block Size Determination Loop 10 7. .. • Bit Allocation Calculation Loop 108. ... Adaptive Bit Allocation Encoding Loop. This paper size is applicable to China Home Standards (CNS) A4 Specification (210X 297mm) (Binding ^ (Please read the notes on the back before filling this page) -45-B7 Printed by the Employees ’Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs 5. Description of Invention (43) * 1 I 1 1 〇 .. • Code output terminal 1 1 1 1 1... Orthogonal transformation block size information output terminal 1 1 2 1 •. Allowable noise level Computer input terminal /, 1 1 please 1 I 2 2 •. The energy detection circuit of each frequency band first 1 | 1 buy 1 2 3-• Convolution furnace wave circuit circuit back 1 1 2 4 • • subtractor 1 thinking 1 2 5. • (η _ ai) The function generates the circuit term and then 2 6 • Fill in the divider for this component | 2 7 Combined circuit Ά * · s_, 1 1 2 8 • • Subtractor 1 1 3 0... 3 1 • • Allow the noise level computer to output IfLU Suborder I 3 2 * • • Minimum audible curve generation circuit 1 1 I 3 3... • Correction information output circuit 1 1 3 0 〇 .. • Orthogonal transform output circuit (M DCT coefficient) input 1 Terminals, * 1 3 0 1 .. • Each frequency-mt city energy calculation circuit 1 I 3 0 2 .. • Frequency port smoothing calculation circuit 1 I 3 0 4 .. bits Split rate determines loop 1 I 3 0 5... • Use possible total number of bits to enter loop 1 1 3 0 6... Energy dependent bit loop 1 1 3 0 7... Fixed bit allocation loop 1 1 3 0 8 .. • • Sum of bit calculation circuit 1 1 3 0 9 .. • • Bit allocation output terminal for each frequency band 1 1 This paper standard is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 C) -46-B7 V. Description of invention (in) Printed by the Employees ’Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs 4 0 1 .. • Orthogonal transformation information group size information input-CtU terminal 4 0 2 .. • • Input terminal of spectrum data 4 0 3 ······················································································. · .. S / L άΧ fixed loop of the scale factor 4 0 6 .- •. S / t aX fixed loop of the word length 4 0 7.. .. Total bit number correction loop 4 0 8. · •. Quantizer 4 0 9 .. • Encoder 4 1 0... • Encoding data output terminal 5 0 1... A mode encoding data input terminal 5 0 2... A mode encoding data output terminal 5 〇 3... A mode orthogonal transformation block size information input terminal 5 0 4... A mode orthogonal transformation block size information output terminal 5 0 5... A mode white adaptive bit allocation decoding Loop 5 〇6 .- .. B mode white adaptive bit allocation coding loop 5 0 7 .. • bit Equipped with calculation circuit 5 0 8 ·-. Independent converter 5 0 9 · ····························· .. Format conversion circuit 5 1 1... .. B mode code data output terminal 5 1 2 .. ..B mode coding data input terminal 5 1 3.. .Orthogonal transformation block size output terminal 5 1 4. • ..orthogonal transformation block size input terminal. The paper size is applicable to the Chinese National Standard (CMS) A4 specification (210X297mm) (Please read the precautions on the back before filling in this page) · (installed-• Ding _,-* · 5 丄) ----------- -47-A 7 B7 V. Description of the invention (45) 200 ... audio signal output terminals 201, 202 ... band synthesis filter 203 ... high-domain inverse orthogonal transform circuit 2 0 4 .... inverse-domain orthogonal Transform circuit 205... Low-domain inverse orthogonal transform circuit 208... Adaptive bit allocation decoding circuit 2 10.... Encoding input terminal 2 11. ... orthogonal transform information block size information input terminal (Please read the notes on the back before filling in P), \ a 5 Ministry of Economic Affairs Bureau of Standards HIGHLAND consumer cooperatives printed in this paper scale applicable Chinese National Standard (CNS) A4 size (210X29 mm) -48? -

Claims (1)

A8 B8 C8 D8 VI. Scope of Patent Application No. Patent Application Rate Amendment of Chinese Patent Application Range (please read the precautions on the back before filling out this page) Amendment in July of the Republic of China 1. Recording and / or reproduction of compressed data Or the transmitting and / or receiving device, decomposes the digital signal into complex frequency band components, obtains the signal components in the complex quadratic element information group related to time and frequency, and compresses the information according to the information compression parameter through the above quadratic element information group The information processing device that processes the above-mentioned information compressed signal and the above-mentioned compressed data is characterized by having a complex number mode corresponding to the information bit rate of the complex number. A conversion method that changes the number of the above-mentioned information compression parameters, and the above Compressed data does not return to the signal component on the time axis. From the compressed data or the data on the frequency axis of the compressed data, the compressed data corresponding to the above modes are obtained: The above conversion means the higher the information bit rate Mode, so that it has more information compression parameters, change the above information Number of reduction parameters 0 Printed by the Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs 2. Such as the application of patent scope item 1 for recording and / or reproduction or transmission and / or reception of compressed data, in which the above information compression parameters The number is compared to the information bit rate of each mode. 3. The device for recording and / or regenerating or transmitting and / or receiving compressed data as claimed in item 1 of the patent scope, in which when the mode from the high information bit rate to the low bit rate mode is changed, at least The information compression parameters of the two secondary meta information groups reduce the number of the above information compression parameters. This paper scale is applicable to the Chinese National Standard (CNS) A4 specification (210X297mm). The Ministry of Economic Affairs Central Standards Bureau Employee Consumer Cooperative Printed A8 B8 C8 D8 _ Six. Patent application scope 4. For example, the compressed data of the first item of the patent scope application Recording and / or reproducing or transmitting and / or receiving device, wherein when changing from a mode with a low information bit rate to a mode with a high bit rate, the above conversion means is to assign a single information compression parameter to at least two of them In the secondary meta information group, the number of the above information compression parameters is increased. 5. The device for recording and / or regenerating or transmitting and / or receiving compressed data as claimed in item 1 of the patent scope, in which the compressed data is converted from a mode with a high information bit rate to a mode with a low bit rate According to the above information compression parameters, expand the signal on the frequency axis, and use the newly set information compression parameter for data compression on the signal on the frequency axis. 6. A method of recording and / or regenerating or sending and / or receiving compressed data, decomposing the digital signal into complex frequency band components, obtaining the signal components in the complex quadratic element information group about time and frequency, via The information compression method for processing the information compression signal and the compressed data obtained by processing the information compression signal according to the information compression parameter is characterized in that the complex pattern corresponding to the complex information bit rate changes the above information At the same time as the number of compression parameters, the compressed data is not restored to the signal components on the time axis, and the compressed data or the data on the frequency axis on which the compressed data is expanded corresponds to the compressed data in each mode; the transformation means is information The higher the bit rate mode, the more information compression parameters, and the number of the above information compression and parameter changes. ✓ 7. For example, the method of recording and / or regenerating or transmitting and / or receiving compressed data according to item 6 of the patent scope, in which the above information compression parameters are in accordance with the Chinese National Standard (CNS) A4 standard (210X297mm) (Please read the precautions on the back first and then fill out this page). ···· 1Τ The Ministry of Economic Affairs, Central Standards Bureau, Employee Consumer Cooperative Printed A8 Β8 C8 D8 6. The number of patent applications is compared to the information bit rate of each model By. 8. Compression according to item 6 of the patent application. Data recording and / or reproduction or transmission and / or reception methods, in which when the mode from the information bit rate is changed to the low bit rate mode, at least The information compression parameters of the two secondary meta information groups reduce the number of the above information compression parameters. 9. For the method of recording and / or regenerating or transmitting and / or receiving compressed data according to item 6 of the patent application, the above conversion method is used when the mode from low bit rate of information is changed to the mode with high bit rate By allocating a single information compression parameter to at least two secondary meta information groups, the number of the above information compression parameters is increased. 10. The method of recording and / or regenerating or transmitting and / or receiving compressed data as claimed in item 6 of the patent scope, in which the compressed data is converted from a mode with a high information bit rate to a mode with a low bit rate According to the above information compression parameters, the signal expanded on the frequency axis is used to compress the data on the frequency axis using the newly set information compression parameters. 1 1. A recording medium characterized by recording compressed data and information compression parameters generated by the signal processing device described in item 1 of the patent scope. 12. The recording medium as claimed in item 11 of the patent scope, wherein the recording medium is an optical disk. 13. If the recording medium of claim 11 of the scope of patent application, the above-mentioned recording medium is a semiconductor memory. 14. For example, if the recording medium of patent application item 11 is used, the size of the previous paper is applicable to the Chinese National Standard (CNS) A4 specification (210X297mm) _ (installed ------ ordered ------ ί- ^ · (Please read the precautions on the back before filling in this page) A8 68 C8 D8 6. The patent application stated that the recording medium is an ic memory card. 15. The recording medium applying for item 11 of the patent scope, where the above recording medium is Optical discs. (Please read the precautions on the back before filling out this page) Pack ·-* • L The Ministry of Economic Affairs Central Standards Bureau Employee Consumer Cooperative printed this paper. The standard of the paper is China National Standard (CNS) A4 (210 X 297 Centigrade)