JP2004355789A - Data reproducing device and method, and data recording and reproducing device and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To amuse a user without losing his interest even when the user watch and listen the same contents repeatedly. <P>SOLUTION: A conversion information generating circuit 18 generates different conversion information whenever data are read out from an optical disk 1 or data are read out in a rate of once for a plurality of read-out of data, and supplies the data to a data converting part 20, The data converting part 20 converts data supplied from an optical pickup 5 through a RF amplifier 6, an EFM demodulation circuit 7, a CIRC decoder 8 and an error interpolation circuit 9 based on conversion information supplied from the conversion information generating circuit 18, and supplies the data to an output terminal 19. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a data reproducing apparatus and a data reproducing method for reproducing data from a recording medium, and a data recording and reproducing apparatus and a data recording and reproducing method.

  In recent years, media recording digital data in place of media recording analog data have become widespread. This is because a medium on which digital data is recorded has an advantage that music data and image / video data can always be reproduced with the same quality.

  Further, in a reproducing apparatus for reproducing media, image quality and sound can be set in a state desired by a user by setting luminance, color tone, sound range, and the like. Furthermore, in recent years, as a method of changing the setting contents such as image quality and sound, a reproducing apparatus that changes the setting contents based on biometric information has been proposed (for example, see Patent Document 1 below).

JP-A-10-212177

  However, on media on which digital data is recorded, such as CDs (Compact Discs), DVDs (Digital Versatile Discs), and DVs (Digital Video), the content is always played back with the same quality. Or, there is a problem that the user gets tired of watching the content.

  Therefore, an object of the present invention is to provide a data reproducing apparatus and a data reproducing method, and a data recording / reproducing apparatus and a data recording / reproducing method that allow a user to enjoy the same content without getting tired even when repeatedly listening or viewing the same content. Is to do.

  In order to solve the above-described problem, a first aspect of the present invention provides a reproducing unit for reading data from a recording medium, and a method for reading out read data every time or once for a plurality of reads. A data reproducing device comprising: a data changing unit that gives a different change in a ratio.

  According to a second aspect of the present invention, there is provided a reproducing step of reading data from a recording medium, and a method of applying different changes to the read data each time the data is read or once for a plurality of times of reading. And a changing step.

  According to a third aspect of the present invention, there is provided a recording / reproducing means for writing data to a recording medium and reading data from the recording medium, and for each data reading or at a rate of once for a plurality of data readings. Conversion data generating means for generating different conversion information, and data read from the recording medium by the recording / reproducing means, based on the conversion information supplied from the conversion information generating means or the conversion information read from the recording medium. A data conversion unit for performing data conversion, wherein the recording / reproduction unit records the conversion information on a recording medium when registration of reproduction characteristics is instructed.

A fourth aspect of the present invention is a conversion information generating step of generating different conversion information every time data is read from a recording medium or at a rate of once for a plurality of data reads,
A data conversion step of performing data conversion on the data read from the recording medium based on the conversion information generated by the conversion information generation step, and conversion information for recording the conversion information on the recording medium when registration of reproduction characteristics is instructed. A recording step, and a data conversion step of, when reproduction based on the registered reproduction characteristics is instructed, performing data conversion on the data read from the recording medium based on the conversion information read from the recording medium. This is a characteristic data recording / reproducing method.

  According to the present invention, a different change is applied to data read from a recording medium at each reading or at a rate of one reading for a plurality of readings. , Different data can be output once. Thus, even when the same data is repeatedly reproduced, the user can enjoy the game without getting bored.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows an example of the configuration of a data reproducing apparatus according to the first embodiment of the present invention. As shown in FIG. 1, this data reproducing apparatus includes a CPU (Central Processing Unit) (control means) 2, a servo unit 3, a spindle motor 4, an optical pickup (reproducing means) 5, an RF amplifier 6, an EFM (eight to fourteen). modulation) demodulation circuit 7, a CIRC (Cross Interleaved Reed-Solomon Code) decoder 8, an error interpolation circuit 9, a sub-code decoder 13, a display device 14, an operation device 15, a data change section (data change means) 22 and an output terminal 19. Prepare. Here, 1 is an optical disk (recording medium) such as a CD. The output terminal 19 is connected to, for example, an amplifier.

  As shown in FIG. 1, the data change unit 22 includes a data conversion unit (data conversion unit) 20, a switch 16, a switch 21, a switch 17, and a conversion information generation circuit (conversion information generation unit) 18. Further, the data conversion section 20 includes a first data conversion circuit (first data conversion section) 10, a digital-analog conversion section (hereinafter, D / A conversion section) (D / A conversion section) 11, and a second data conversion circuit (first D / A conversion section). A data conversion circuit (second data conversion means) 12 is provided.

  The optical disc 1 is placed on a turntable and rotated by a spindle motor 4. The spindle motor 4 is driven to rotate at a constant linear velocity (CLV) under the control of the servo unit 3. The servo unit 3 generates various servo drive signals of focus, tracking, sled, and spindle based on the focus signal, tracking signal, and operation command from the CPU 2, and outputs these signals to the spindle motor 4 and the optical pickup 5. The CPU 2 controls the entire data reproducing apparatus, and is connected to the display device 14, the operation device 15, the subcode decoder 13, and the servo unit 3. The optical pickup 5 traces concentrically or spirally formed tracks on the optical disc 1 while condensing the light beam of the semiconductor laser on the signal surface of the optical disc 1. The optical pickup 5 is moved by the sled mechanism. Digital audio data output from the optical pickup 5 is supplied to an EFM demodulation circuit 7 via an RF amplifier 6.

  The EFM demodulation circuit 7 performs EFM demodulation on the digital audio data supplied from the optical pickup 5 via the RF amplifier 6 and supplies the digital audio data to the CIRC decoder 8. The CIRC decoder 8 corrects the error of the digital audio data supplied from the EFM demodulation circuit 7 by CIRC and supplies the digital audio data to the error interpolation circuit 9. The error interpolation circuit 9 interpolates the digital audio data supplied from the CIRC decoder 8 and supplies the digital audio data to the data changing unit 22.

  The data changing section 22 gives a change to the digital audio data supplied from the error interpolation circuit 9 at each readout or at a rate of once for a plurality of readouts so as to have different sounds, Supply to 19. This change is, for example, at least one of emphasis / suppression of a predetermined band, quantization bit change, sampling frequency change, bit rate change, tempo change, high-frequency addition, fluctuation addition, and reverberation addition.

  The subcode decoder 13 decodes the subcode supplied from the EFM demodulation circuit 7 under the control of the CPU 2 and supplies the subcode to the display device 14 and the servo unit 3. The display device 14 is configured by, for example, a liquid crystal display or a fluorescent display tube (FL), and displays information based on data supplied from the subcode decoder 13 under the control of the CPU 2. The operation device 15 includes buttons and the like, and each unit included in the data reproducing device is controlled according to the operation of the buttons and the like.

  Next, the operation of each unit provided in the data changing unit 22 will be described. Under the control of the CPU 2, the conversion information generating circuit 18 generates different conversion information every time digital audio data is read from the optical disc 1 or at a rate of once for a plurality of readings. The data is supplied to the data conversion unit 20 via the data conversion unit 17.

  The conversion information generating circuit 18 includes, for example, a random number generator (random number generating means) for generating a random number, a timer (time information generating means) for generating time information, keys and / or buttons, and A pressure sensor (press generation means) that generates press information according to press, an environment information generator (environment information generation means) that generates environment information according to the environment, or position information according to the position of the data reproducing device. The generated GSP (Global Positioning System) is a receiver (position information generating means). Here, the timer is configured to generate, for example, at least one of information of year, month, day, day of the week, and time. The environmental information generator is a sensor configured to measure at least one of temperature, humidity, atmospheric pressure, brightness, air volume, and wind direction.

  The data converter 20 converts the data supplied from the error interpolation circuit 9 via the switches 16, 21 and 17 based on the conversion information supplied from the conversion information generating circuit 18, and supplies the data to the output terminal 19.

  Next, the operation of each unit provided in the data conversion unit 20 will be described. The first data conversion circuit 10 converts the digital audio data supplied from the error interpolation circuit 9 based on the conversion information supplied from the conversion information generation circuit 18 via the switch 16, and converts the data into a D / A converter 11. To supply. That is, the first data conversion circuit 10 changes the digital audio data supplied from the error interpolation circuit 9 so that the sound becomes different at every reading or at a rate of once for a plurality of readings. And supplies it to the D / A converter 11. This change is, for example, at least one of emphasis / suppression of a predetermined band, change of tempo, addition of high frequency band, addition of fluctuation, and addition of reverberation.

  FIG. 2 shows an example of the configuration of the first data conversion circuit 10 that changes the tempo of a music piece to be reproduced. As shown in FIG. 2, the data conversion circuit 10 includes a pattern selection circuit 31, a tempo conversion circuit 32, and a buffer 33. Here, a case where the conversion information generating circuit 18 is a random number generator (RNG) is shown as an example.

  The pattern selection circuit 31 classifies the random number supplied from the conversion information generation circuit 18 as a random number generator into n, and supplies a control signal according to the classification result to the tempo conversion circuit 32. For example, the pattern selection circuit 31 classifies the random number (decimal number) supplied from the random number generator 18 into n by the last digit. For example, the pattern selection circuit 31 classifies random numbers into five groups according to which group of the last digit of the random numbers belongs to 0, 1, 2, 3, 4, 5, 6, 7, or 8.9. The corresponding control signal is supplied to the tempo conversion circuit 32.

  The tempo conversion circuit 32 converts the digital audio data supplied from the error interpolation circuit 9 based on the control signal supplied from the pattern selection circuit 31, and supplies the digital audio data to the D / A conversion unit 11. For example, when the pattern selection circuit 31 classifies random numbers into five, the tempo conversion circuit 32 determines that the tempo of the music is fast, slightly faster, the same, or slightly slower based on the control signal supplied from the pattern selection circuit 31. The digital audio data supplied from the error interpolation circuit 9 is converted so that the digital audio data becomes one of the following, and the digital audio data is supplied to the D / A converter 11. The buffer 33 absorbs the time axis expansion and contraction of the converted digital audio data.

  FIG. 3 shows an example of the configuration of the first data conversion circuit 10 that changes the emphasis / suppression of a predetermined band of the reproduced music. The first data conversion circuit 10 includes a pattern conversion circuit 41, a band emphasis / suppression circuit 42, and a digital filter 43. Here, a case where the conversion information generation circuit 18 is a random number generator is shown as an example.

  The pattern conversion circuit 41 converts the n-bit data supplied from the conversion information generation circuit 18, which is a random number generator, into high-frequency emphasis data and high-frequency suppression data in order of n / 4 from higher to lower. , Low-frequency emphasis data and low-frequency suppression data, and a control signal according to the result is supplied to the band emphasis / suppression circuit 42. For example, when a 16-bit random number is supplied from the random number generator 18, high-frequency emphasis data, high-frequency suppression data, low-frequency emphasis data, low-frequency emphasis data, The data is allocated as band suppression data, each data is converted into data that can be supplied to the band emphasis / suppression circuit 42, and supplied to the band emphasis / suppression circuit 42.

  The band emphasis / suppression circuit 42 controls the digital filter 43 based on the data supplied from the pattern conversion circuit 41. Under control of the band emphasis / suppression circuit 42, the digital filter 43 performs emphasis and suppression of high-frequency components and emphasis and suppression of low-frequency components of digital audio data. For example, when the band emphasis / suppression circuit 42 assigns four bits each as the data for emphasis / suppression, the digital filter can perform a total of 65536 filtering processes.

  The D / A converter 11 converts the digital audio data supplied from the first data converter 10 into analog data based on the conversion information supplied from the conversion information generator 18 via the switch 21, and converts the digital audio data into analog data. To the data conversion circuit 12. For example, the D / A conversion unit 11 converts the digital audio data supplied from the first data conversion circuit 10 into an analog signal using a quantization bit number and / or a sampling frequency corresponding to the conversion information supplied via the switch 21. The data is converted into data and supplied to the second data conversion circuit 12.

  The D / A converter 11 includes, for example, a pattern selection circuit 31 and a D / A converter. The D / A converter converts the digital audio data supplied from the first data conversion circuit 10 into an analog audio signal using the number of quantization bits and / or the sampling frequency according to the control signal supplied from the pattern selection circuit 31. Convert to data.

  The second data conversion circuit 12 converts the analog audio data supplied from the D / A conversion unit 11 based on the conversion information supplied from the conversion information generation circuit 18 via the switch 17, and supplies the analog audio data to the output terminal 19. I do. The second data conversion circuit 12 performs, for example, data conversion for changing at least one of emphasis / suppression of a predetermined band, change of tempo, addition of high frequency band, addition of fluctuation, and addition of reverberation. The switches 16, 21 and 17 are turned on / off under the control of the operation device 15.

  FIG. 4 is a flowchart in a case where the process of changing the tempo is realized by software in the first embodiment. In step ST1, digital audio data is read from an optical disk or the like. In step ST2, a random number is generated. A predetermined tempo pattern is selected based on the generated random numbers (step ST3). For example, one of the five tempo patterns as described above is selected.

  In step ST4, a tempo control signal according to the tempo pattern is generated. In step ST5, the tempo of the digital audio signal is converted based on the tempo control signal. The processing performed in steps ST2 to ST5 corresponds to the first data conversion circuit 10.

  In step ST6, it is determined whether or not there is a reproduction characteristic registration instruction. If it is determined that there is a reproduction characteristic registration instruction, the conversion information is stored in the memory in step ST7. The memory is a recording medium on which digital audio data is recorded, or a medium other than a recording medium on which digital audio data is recorded, such as a hard disk or a memory card.

  If it is determined in step ST6 that there is no instruction to register the reproduction characteristic, then in step ST8, it is determined whether there is an instruction to register the digital audio data whose tempo has been converted. If it is determined that there is a registration instruction, in step ST9, the converted digital audio data is stored in the memory. The same memory as the recording medium for the conversion information can be used as the memory.

  If it is determined in step ST8 that there is no instruction to register the converted digital audio data, the digital audio data is converted to analog data in step ST10. In step ST11, analog audio data is converted based on a random number. Step ST11 corresponds to the second data conversion circuit 12. In step ST12, the converted analog data is output.

According to the first embodiment of the present invention, the following effects can be obtained.
The conversion information generation circuit 18 generates different conversion information every time data is read from the optical disc 1 or at a rate of once for a plurality of readings, and supplies the same to the data conversion unit 20. Then, the data conversion unit 20 converts the data supplied from the error interpolation circuit 9 using the conversion information supplied from the conversion information generation circuit 18 and supplies the data to the output terminal 19. Thus, the sound of the same music or album can be changed for each reproduction. Therefore, even when the same music or album is repeatedly reproduced, the user can enjoy the game without getting bored.

  Further, different performances are reproduced each time the user listens to the optical disc, such as a live concert where different performances are performed each time the audience visits, so that the user can listen to the same music many times without getting bored.

  Next, a data reproducing apparatus according to a second embodiment of the present invention will be described. In the above-described first embodiment, an example in which the present invention is applied to a data reproducing apparatus that reproduces audio data has been described. In the second embodiment, a data reproducing apparatus that reproduces video data is described. Next, an example to which the present invention is applied will be described.

  FIG. 5 shows an example of the configuration of a data reproducing apparatus according to the second embodiment of the present invention. As shown in FIG. 5, the data reproducing apparatus includes a CPU 102, a servo unit 103, a spindle motor 104, an optical pickup (reproducing means) 105, an RF amplifier 106, an EFM plus demodulation circuit 107, an RS-PC decoder (Reed-Solomon Product). Code) 108, a sector decomposition circuit 109, an error interpolation circuit 110, a data change unit 123, an address decoder 114, a display device 115, an operation device 116, and an output terminal 120. Reference numeral 101 denotes an optical disk (recording medium) such as a DVD. The output terminal 120 is connected to a display device such as a television, for example.

  As shown in FIG. 5, the data changing unit 123 includes a data conversion unit (data conversion unit) 121, a switch 117, a switch 122, a switch 118, and a conversion information generation circuit (conversion information generation unit) 119. Further, the data conversion section 121 includes a first data conversion circuit (first data conversion section) 111, a digital-analog conversion section (hereinafter, D / A conversion section) (D / A conversion section) 112, and a second data conversion circuit (first D / A conversion section). A data conversion circuit (second data conversion means) 113 is provided.

  The optical disc 101 is placed on a turntable and rotated by a spindle motor 104. The spindle motor 104 is driven to rotate at a constant linear velocity (CLV) under the control of the servo unit 103. The servo unit 103 generates various servo drive signals of focus, tracking, sled, and spindle based on the data supplied from the address decoder 114 and the operation command from the CPU 102, and sends these signals to the spindle motor 104 and the optical pickup 105. Output. The CPU 102 controls the entire playback device, and is connected to the display device 115, the operation device 116, the address decoder 114, and the servo unit 103. The optical pickup 105 traces concentrically or spirally formed tracks on the optical disc 101 while condensing the light beam of the semiconductor laser on the signal surface of the optical disc 101. The optical pickup 105 is moved by the sled mechanism. The digital video data output from the optical pickup 105 is supplied to the EFM plus demodulation circuit 107 via the RF amplifier 106.

  The EFM plus demodulation circuit 107 performs EFM plus demodulation on the digital video data supplied from the RF amplifier 106 and supplies the digital video data to the RS-PC decoder 108. The RS-PC decoder 108 corrects the error of the digital video data supplied from the EFM plus demodulation circuit 107 by RS-PC, and supplies the digital video data to the sector decomposition circuit 109.

  The sector decomposition circuit 109 decomposes the digital video data supplied from the RS-PC decoder 108 into sectors and supplies the digital video data to the error interpolation circuit 110 and the address decoder 114. The error interpolation circuit 110 interpolates the digital video data supplied from the sector decomposition circuit 109 and supplies the data to the data change unit 123.

  The data changing unit 123 applies a change to a different image to the digital video data supplied from the error interpolation circuit 110 at every reading or at a rate of once for a plurality of readings. 120. This change is, for example, at least one of color tone change, luminance change, contrast change, edge emphasis, emphasis / suppression of a predetermined band, frame frequency change, bit rate change, and fluctuation addition.

  The address decoder 114 decodes the data supplied from the sector decomposition circuit 109 under the control of the CPU 102 and supplies the data to the display device 115 and the servo unit 103. The display device 115 is configured by, for example, a liquid crystal display or a fluorescent display tube (FL), and displays information based on data supplied from the address decoder 114 under the control of the CPU 102. The operation device 116 includes buttons and the like, and each unit provided in the data recording / reproducing device is controlled according to the operation of the buttons and the like.

  The data conversion section 121 and the conversion information generation circuit 119 provided in the data change section 123 are substantially the same as those provided in the data reproducing apparatus according to the above-described first embodiment, and thus description thereof will be omitted.

  Next, the operation of each unit provided in the data conversion unit 121 will be described. The first data conversion circuit 111 converts the digital video data supplied from the error interpolation circuit 110 based on the conversion information supplied from the conversion information generation circuit 119 via the switch 117, and converts the data into a D / A converter 112. To supply. That is, the data conversion circuit 111 changes the digital video data supplied from the error interpolation circuit 110 so that a different image is obtained at every reading or at a rate of once for a plurality of readings, It is supplied to the D / A converter 112. This change is, for example, at least one of a color tone change, a luminance change, a contrast change, an edge emphasis, an emphasis / suppression of a predetermined band, a bit rate change, and fluctuation addition.

  The D / A conversion unit 112 converts the digital video data supplied from the first data conversion circuit 111 into analog video data based on the conversion information supplied from the conversion information generation circuit 119 via the switch 122. 2 data conversion circuit 113. For example, the D / A conversion unit 112 performs D / A conversion of the digital video data supplied from the first data conversion circuit 111 at a frame frequency corresponding to the conversion information supplied via the switch 122, 2 data conversion circuit 113.

  The second data conversion circuit 113 performs data conversion on the analog video data supplied from the D / A conversion unit 112 based on the conversion information supplied from the conversion information generation circuit 119 via the switch 118, and outputs the data to the output terminal 120. Supply. That is, the data conversion circuit 111 changes the digital video data supplied from the error interpolation circuit 110 so that a different image is obtained at every reading or at a rate of once for a plurality of readings, It is supplied to the D / A converter 112. This change is, for example, at least one of a color tone change, a luminance change, a contrast change, an edge emphasis, an emphasis / suppression of a predetermined band, a bit rate change, and fluctuation addition.

  FIG. 6 shows an example of the configuration of the second data conversion circuit 113 for giving a change to the luminance and color tone of an image. As shown in FIG. 6, the second data conversion circuit 113 includes a pattern selection circuit 131 and an adjustment circuit 132. Here, a case where the conversion information generation circuit 119 is a random number generator is shown as an example.

  The pattern selection circuit 131 classifies the random number supplied from the conversion information generation circuit 119, which is a random number generator, into n classes, and supplies a control signal corresponding to the classification result to the adjustment circuit 132.

  The adjusting circuit 132 gives a luminance change and a color tone change which become different images to the digital video data supplied from the error interpolation circuit 110 based on the control signal supplied from the pattern selection circuit 131, and outputs the output terminal 120. To supply.

  FIG. 7 shows an example of the second data conversion circuit 113 for displaying special content and the like. As shown in FIG. 7, the second data conversion circuit 113 includes a special pattern determination circuit 141, a special ticket issuing circuit 142, a special content generation circuit 143, a special conversion circuit 144, a switch 145, a switch 146, a switch 147, and an addition circuit. (Not shown). Here, a case where the conversion information generation circuit 119 is a random number generator is shown as an example.

  The special pattern determining circuit 141 determines whether or not the random number supplied from the conversion information generating circuit 119, which is a random number generator, is the same as a preset numerical value. If it is determined that they are the same, the special pattern determination circuit 141 controls to turn on the switches 145, 146, and 147. On the other hand, when it is determined that they are not the same, the special pattern determination circuit 141 controls the switches 145, 146, and 147 to be turned off.

  The special ticket issuing circuit 142 generates cryptographic information such as a ciphertext or a cryptographic number, and supplies the cryptographic information to the adding circuit via the switch 145. This encryption information is, for example, information that can be exchanged for a special ticket.

  The special content generation circuit 143 generates content that is completely unknown to the user, and supplies the content to the addition circuit via the switch 146. This content is data for displaying an image such as fireworks. When the special pattern determination circuit 141 determines that the random number supplied from the random number generator 119 is the same as a preset numerical value, a user image may be displayed. In this case, the user's image data is stored in a storage unit such as a memory in advance.

  The special conversion circuit 144 gives a change to give a different image to the analog video data supplied from the D / A conversion unit 112 and supplies the same to the addition circuit.

  The addition circuit appropriately adds signals supplied from the special ticket issuing circuit 142, the special content generation circuit 143, and the special conversion circuit 144, and supplies the signals to the output terminal 120.

  FIG. 8 is a flowchart in the case where the process of changing the color tone of the video data and displaying the special content or the like is realized by software in the second embodiment. In step ST21, digital video data is read from an optical disk or the like. In step ST22, a random number is generated. A predetermined color tone pattern is selected based on the generated random numbers (step ST23).

  In step ST24, a tone control signal according to the tone pattern is generated. In step ST25, the color tone of the digital video data is converted based on the color tone control signal. The processing performed in steps ST22 to ST25 corresponds to the first data conversion circuit 111.

  In step ST26, the digital video data is converted into analog data. In step ST27, it is determined whether or not the random number generated in the random number generation step ST22 is the same as a preset numerical value. If they are not the same, analog data is output (step ST28).

  If it is determined in step ST27 that they are the same, in step ST28, the analog data is converted so that the newly generated image data is added. As described above, the newly generated image is ticket exchangeable cryptographic information, an image unknown to the user, or an image known to the user. The processing of steps ST27 to ST30 is processing corresponding to the second data conversion circuit 113.

According to the second embodiment of the present invention, the following effects can be obtained.
The conversion information generation circuit 119 generates different conversion information every time video data is read from the optical disc 101 or at a rate of once for a plurality of readings, and supplies it to the data conversion unit 121. Then, the data conversion unit 121 converts the data supplied from the error interpolation circuit 110 with the conversion information supplied from the conversion information generation circuit 119, and supplies the data to the output terminal 120. Thereby, the image / video of the content such as the same movie can be changed for each reproduction. Therefore, even when content such as the same movie is repeatedly reproduced, the user can enjoy the content without getting bored.

  Next, a third embodiment of the present invention will be described. The data recording / reproducing apparatus according to the third embodiment is such that reproduction characteristics such as acoustic change desired by a user can be registered in an optical disc and / or a data recording / reproducing apparatus.

  FIG. 9 shows an example of the configuration of a data recording / reproducing apparatus according to the third embodiment of the present invention. In FIG. 9, the same reference numerals are given to portions corresponding to the data recording / reproducing device according to the first embodiment.

  As shown in FIG. 9, this data recording / reproducing apparatus includes a CPU (Central Processing Unit) (control means) 2, a servo unit 3, a spindle motor 4, an optical pickup (recording / reproducing means) 5, an RF amplifier 6, an EFM (eight). to fourteen modulation) demodulation circuit 7, CIRC (Cross Interleaved Reed Solomon Code) decoder 8, error interpolation circuit 9, subcode decoder 13, display device 14, operation device 15, data change section (data change means) 22, output terminal 19 , A switch 202, a conversion information storage unit 203, a memory 204, a CIRC encoder 205, an EFM modulation circuit 206, and a recording circuit 207. Here, reference numeral 201 denotes a recordable or rewritable optical disk, such as a CD-R (Compact Disc-Recordable) or a CD-RW (Compact Disc-ReWritable). The output terminal 19 is connected to, for example, an amplifier. Further, instead of the CIRC encoder 205 and the EFM modulation circuit 206, a data processing unit that processes the conversion information read from the memory 204 and supplies the converted information to the recording circuit 207 may be provided.

  The data change unit 22 includes a data conversion unit (data conversion unit) 20, a switch 16, a switch 21, a switch 17, and a conversion information generation circuit (conversion information generation unit) 18. Further, the data converter 20 includes a first data converter (first data converter) 10, a D / A converter (D / A converter) 11, and a second data converter (second data converter). Means) 12. Although not shown here for the sake of convenience, the first data conversion circuit 10, the D / A conversion unit 11, and the second data conversion circuit 12 are connected to the CPU 2 respectively.

  The switch 202 is turned on / off under the control of the operation device 15. The conversion information storage unit 203 stores the conversion information supplied from the conversion information generation circuit 18 via the switch 202. Then, under the control of the CPU 2, the stored conversion information is supplied to the memory 204 and / or the CIRC encoder 205. The memory 204 stores the conversion information supplied from the conversion information storage unit 203. The CIRC encoder 205 performs CIRC encoding on the conversion information supplied from the conversion information storage unit 203 and supplies the conversion information to the EFM modulation circuit 206. The EFM modulation circuit 206 performs EFM modulation on the conversion information supplied from the CIRC encoder 205 and supplies the converted information to the recording circuit 207. The recording circuit 207 is provided with a drive circuit. When the output of the recording circuit 207 is supplied to a semiconductor laser in the optical pickup 5, a laser whose intensity is modulated according to recording data is output from the optical pickup 5. The optical disk 201 is irradiated.

  Next, an example of the operation of the data recording / reproducing apparatus according to the third embodiment of the present invention will be described. First, an example of an operation of registering a desired acoustic change in the optical disc 201 will be described. First, the conversion information storage unit 203 stores the conversion information supplied from the conversion information generation circuit 18 via the switch 202. When an operation for registering an acoustic change to the optical disc 201 is performed in the operation device 15, the conversion information is read from the conversion information storage unit 203 under the control of the CPU 2, and the CIRC encoder 205, the EFM modulation circuit 206, and the recording circuit 207 are read. Is supplied to the optical pickup 5 via the. The optical pickup 5 records the conversion information supplied from the conversion information storage unit 203 via the CIRC encoder 205, the EFM modulation circuit 206, and the recording circuit 207 in a conversion information recording area of the optical disc 201. The conversion information recording area in which the conversion information is recorded may be, for example, a lead-in area, a lead-out area, or a special area provided further inside the lead-in area.

  Next, an example of a data reproducing operation based on an acoustic change registered in the optical disc 201 will be described. First, when the optical disk 201 is carried into the data recording / reproducing apparatus by, for example, a tray, the conversion information is read from the conversion information recording area of the optical disk 201 by the optical pickup 5, and the RF amplifier 6, the EFM demodulation circuit 7, the CIRC The data is stored in the memory 204 via the decoder 8 and the error interpolation circuit 9. Then, when an operation for executing data reproduction is performed by the operation device 15 based on the acoustic change registered in the optical disk 201, the conversion information is read from the memory 204 by the CPU 2 and supplied to the data conversion unit 20. The data converter 20 converts the audio data read from the optical disc 201 by using the conversion information read from the memory 204 and supplies the converted audio data to the output terminal 19.

  Next, an example of an operation of registering a desired acoustic change in the data recording / reproducing device and reproducing data based on the registered acoustic change will be described. First, the conversion information storage unit 203 stores the conversion information supplied from the conversion information generation circuit 18 via the switch 202. When an operation for registering an acoustic change in the data recording / reproducing device is performed in the operation device 15, the conversion information is read from the conversion information storage unit 203 and stored in the memory 204 under the control of the CPU 2.

  Then, when an operation for reproducing data is performed on the operation device 15 by an acoustic change registered in the data recording / reproducing device, the conversion information is read from the memory 204 by the CPU 2 and supplied to the data conversion unit 20. The data converter 20 converts the audio data read from the optical disc 201 by using the conversion information read from the memory 204 and supplies the converted audio data to the output terminal 19.

  The storage of the conversion information in the memory and the registration of the converted digital audio data in the third embodiment can be realized by software processing according to the flow of the flowchart shown in FIG. 4 described above.

  The data reproduction processing for reproducing data based on the registered acoustic change in the third embodiment can be realized by software processing according to the flow of the flowchart shown in FIG. In step ST41, digital audio data and conversion information are read from a recording medium such as a disk. The read conversion information is stored in the memory (step ST42).

  In step ST43, digital audio data is converted based on the read conversion information. In step ST43, it is determined whether or not the reproduced data is reproduced again. If it is determined that reproduction is to be performed again, the acoustic change is changed each time reading is performed, so that new conversion information is generated in step ST45. In step ST46, the generated conversion information is stored in the memory.

  In step ST47, digital data is reproduced based on the generated conversion information. Then, the process returns to step ST44 (determination process of whether or not to perform reproduction again).

  If it is determined in step ST44 that the reproduced data is not to be reproduced again, it is determined in step ST48 whether or not there is a reproduction characteristic registration instruction. If it is determined that there is no registration instruction, the process ends. If it is determined that there is a registration instruction, predetermined conversion information is selectively read from the memory in step ST49. In step ST50, the selected conversion information is recorded in a lead-in area or the like of the recording medium.

According to the third embodiment of the present invention, the following effects can be obtained in addition to the effects obtained by the first embodiment.
The acoustic change desired by the user can be recorded on the optical disc 201 and / or the memory 204 among the sounds that change at each reading or at a rate of one for a plurality of readings. Thereby, the user can reproduce and enjoy a desired acoustic change.

  Next, a fourth embodiment of the present invention will be described. The data recording / reproducing apparatus according to the fourth embodiment is such that reproduction characteristics such as image change desired by a user can be registered in an optical disc and / or a data recording / reproducing apparatus.

  FIG. 11 shows an example of the configuration of a data recording / reproducing apparatus according to the fourth embodiment of the present invention. In FIG. 11, the same reference numerals are given to portions corresponding to the data recording / reproducing device according to the second embodiment.

  As shown in FIG. 11, the data recording / reproducing apparatus includes a CPU 102, a servo section 103, a spindle motor 104, an optical pickup (recording / reproducing means) 105, an RF amplifier 106, an EFM plus demodulation circuit 107, an RS-PC decoder (Reed-PC). Solomon Product Code) 108, sector decomposition circuit 109, error interpolation circuit 110, data change unit 123, address decoder 114, display device 115, operation device 116, output terminal 120, switch 302, conversion information storage unit 303, memory 304, RS A PC encoder 305, an EFM plus modulation circuit 306, and a recording circuit 307; Here, reference numeral 301 denotes a recordable or rewritable optical disc such as a DVD-R (Digital Versatile Disc-Recordable), a DVD-RW (Digital Versatile Disc-ReWritable), or a DVD-RAM (Digital Video Disc-Random Access). Memory). The output terminal 120 is connected to a display device such as a television. Further, instead of the RS-PC encoder 305 and the EFM plus modulation circuit 306, a data processing unit that processes the conversion information read from the memory 304 and supplies the converted information to the recording circuit 307 may be provided.

  The data change unit 123 includes a data conversion unit (data conversion unit) 121, a switch 117, a switch 122, a switch 118, and a conversion information generation circuit (conversion information generation unit) 119. Further, the data converter 121 includes a first data converter (first data converter) 111, a D / A converter (D / A converter) 112, and a second data converter (second data converter). Means 113. Although not shown here for the sake of convenience, the first data conversion circuit 111, the D / A conversion unit 112, and the second data conversion circuit 113 are connected to the CPU 102, respectively.

  The switch 302 is turned on / off under the control of the operation device 116. The conversion information storage unit 303 stores the conversion information supplied from the conversion information generation circuit 119 via the switch 302. Then, under the control of the CPU 102, the stored conversion information is supplied to the memory 304 and / or the RS-PC encoder 305. The memory 304 stores the conversion information supplied from the conversion information storage unit 303. The RS-PC encoder 305 performs RS-PC encoding on the conversion information supplied from the conversion information storage unit 303, and supplies the converted information to the EFM plus modulation circuit 306. The EFM plus modulation circuit 306 performs EFM plus modulation on the conversion information supplied from the CIRC encoder 305, and supplies the converted information to the recording circuit 307. The recording circuit 307 is provided with a drive circuit. When the output of the recording circuit 307 is supplied to the semiconductor laser in the optical pickup 105, a laser whose intensity is modulated according to recording data is output from the optical pickup 105. The optical disk 301 is irradiated.

  Next, an example of the operation of the data recording / reproducing apparatus according to the fourth embodiment of the present invention will be described. First, an example of an operation of registering a desired image change on the optical disc 301 will be described. First, the conversion information storage unit 303 stores the conversion information supplied from the conversion information generation circuit 119. When an operation for registering an image change in the optical disk 301 is performed in the operation device 116, the conversion information is read from the conversion information storage unit 303 under the control of the CPU 102, and the RS-PC encoder 305, the EFM plus modulation circuit 306, The data is supplied to the optical pickup 105 via the recording circuit 307. The optical pickup 105 records the conversion information supplied from the conversion information storage unit 303 via the RS-PC encoder 305, the EFM plus modulation circuit 306, and the recording circuit 307 in the conversion information recording area of the optical disc 301. The conversion information recording area in which the conversion information is recorded may be, for example, a lead-in area, a lead-out area, or a special area provided further inside the lead-in area.

  Next, an example of a data reproducing operation based on an image change registered on the optical disc 301 will be described. First, when the optical disk 301 is carried into the data recording / reproducing apparatus by, for example, a tray, the conversion information is read from the conversion information recording area of the optical disk 301 by the optical pickup 105, and the RF amplifier 106, the EFM plus demodulation circuit 107, The data is stored in the memory 304 via the RS-PC decoder 108, the sector decomposition circuit 109, and the error interpolation circuit 110. Then, when an operation for executing data reproduction is performed on the operation device 116 based on an image change registered in the optical disk 301, the conversion information is read from the memory 304 by the CPU 102 and supplied to the data conversion unit 121. The data converter 121 converts the digital audio data read from the optical disc 301 with the conversion information read from the memory 304 and supplies the digital audio data to the output terminal 120.

  Next, an example of an operation of registering a desired image change in the data recording / reproducing device and reproducing data based on the registered image change will be described. First, the conversion information storage unit 303 stores the conversion information supplied from the conversion information generation circuit 119 via the switch 302. When an operation for registering an image change in the data recording / reproducing device is performed on the operation device 116, stored information is read from the conversion information storage unit 303 under the control of the CPU 102 and stored in the memory 304.

  Then, when an operation for reproducing data is performed on the operation device 116 due to an image change registered in the data recording / reproducing device, the conversion information is read from the memory 304 by the CPU 102 and supplied to the data conversion unit 121. The data converter 121 converts the digital video data read from the optical disc 301 by using the conversion information read from the memory 304 and supplies the digital video data to the output terminal 120.

According to the fourth embodiment of the present invention, the following effects can be obtained in addition to the effects obtained by the second embodiment.
The image quality change desired by the user can be recorded on the optical disc 301 and / or the memory 304 among images that change every time reading is performed or at a rate of one time for a plurality of readings. Thereby, the user can reproduce and enjoy a desired image change.

  Although the first to fourth embodiments of the present invention have been specifically described above, the present invention is not limited to the above-described first to fourth embodiments. Various modifications are possible.

  For example, the numerical values given in the above-described first to fourth embodiments are merely examples, and different numerical values may be used as needed.

  In the above-described first and third embodiments, the data changing unit 22 performs emphasis / suppression of a predetermined band, volume, quantization bit number, sampling frequency, bit rate, tempo, high frequency addition, fluctuation addition, and reverberation. At least one change among the additions may be provided.

  Also, in the first to fourth embodiments described above, an example has been described in which a signal processing circuit processes a digital signal read from an optical disk. However, the above-described signal processing circuit can be replaced by a program. Needless to say.

  Further, in the data reproducing apparatus according to the above-described first embodiment, a configuration may be employed in which an acoustic change desired by a user can be registered. Specifically, the data reproducing apparatus further includes a storage unit (storage unit) including, for example, a nonvolatile memory or a magnetic hard disk. Then, when the user desires to register the sound change, the operation device 15 is appropriately operated, and the conversion information used for the data conversion of the reproduction data is stored in the storage unit. At this time, a title desired by the user may be stored in association with the above-mentioned conversion information. When data is to be reproduced using the conversion information registered by the user, the operation device 15 is appropriately operated, the conversion information is read from the storage unit, and supplied to the data conversion unit 20. Further, it goes without saying that the data reproducing apparatus according to the second embodiment described above may have a configuration in which a user can register a desired image change.

  In the first to fourth embodiments described above, the conversion information generation circuit includes at least two of a random number generator, a timer, a pressure sensor, and a GSP receiver, and integrates information output from each unit. Then, the data may be supplied to the data conversion unit.

  FIG. 12 shows an example of the configuration of the conversion information generation circuit. As shown in FIG. 12, the conversion information generation circuit includes a random number generator 18A, a timer 18B, a pressure sensor 18C, and an integrated processing unit 18D. The integration processing unit 18D integrates the random number, time information, and operation information supplied from the random number generator 18A, the timer 18B, and the pressure sensor 18C, and outputs the integrated information to the data conversion unit 20.

  Further, in the first to fourth embodiments described above, an example in which the present invention is applied to a data reproducing apparatus and a data recording apparatus for reproducing a CD or a DVD has been described. It is needless to say that the present invention can be applied to a data reproducing apparatus and a data recording / reproducing apparatus which can reproduce at least one of an MO (Magneto Optical) and a Blu-Ray disc.

  Further, it goes without saying that the present invention is applicable to a data reproducing apparatus for reproducing a magnetic recording medium such as an HDD (Hard Disk Drive), a video tape or a cassette tape. Further, it goes without saying that the present invention is applicable to a data reproducing apparatus for reproducing a semiconductor memory.

  Further, it goes without saying that the present invention can be applied to a data recording / reproducing apparatus for recording and reproducing magnetic recording media such as an HDD (Hard Disk Drive), a video tape or a cassette tape. Needless to say, the present invention is applicable to a data recording / reproducing apparatus for recording and reproducing a semiconductor memory.

  In the first and third embodiments, the data converter 20 converts the digital data supplied from the error interpolation circuit 9 based on the conversion information supplied from the conversion information generator 18. The data conversion circuit 10 converts the analog data supplied from the D / A conversion unit 11 based on the conversion information supplied from the conversion information generation circuit 18, and supplies the data to the output terminal 19. At least one of the two may be provided. Further, it goes without saying that in the above-described second and fourth embodiments, a similar configuration can be adopted.

  Also, in the first to fourth embodiments described above, an example has been described in which digital data read from an optical disk is converted using conversion information. However, digital data supplied via a network and / or communication may be used. May be converted by the conversion information.

  In the above-described first and third embodiments, the data changing unit 22 changes the same data that is repeatedly read out at each repetition or at a rate of one time for a plurality of repetitions. You may make it give. For example, when reproduction of the same music is instructed by the operation device 15, the conversion information generating circuit 18 generates conversion information different from that at the time of the previous reproduction, and outputs the data to the data conversion unit via the switches 16, 21 and 17. 20. Alternatively, when the same music piece is repeatedly instructed by the operation device 15 a plurality of times, the conversion information generating circuit 18 generates conversion information different from the conversion information used for the previous data conversion. And 17 to the data conversion unit 20. In the above-described second and fourth embodiments, the data changing unit 123 may change the same data that is repeatedly read out at each repetition or at a rate of one time for a plurality of repetitions. Needless to say, it may be added.

FIG. 1 is a block diagram illustrating an example of a configuration of a data reproducing device according to a first embodiment of the present invention. FIG. 2 is a block diagram illustrating an example of a configuration of a first data conversion circuit according to the first embodiment of the present invention. FIG. 3 is a block diagram showing another example of the configuration of the first data conversion circuit according to the first embodiment of the present invention. 5 is a flowchart illustrating a flow of a process according to the first embodiment of the present invention. It is a block diagram showing an example of the composition of the data reproducing device by a 2nd embodiment of this invention. FIG. 9 is a block diagram illustrating an example of a configuration of a second data conversion circuit according to a second embodiment of the present invention. FIG. 11 is a block diagram showing another example of the configuration of the second data conversion circuit according to the second embodiment of the present invention. It is a flow chart which shows a flow of processing in a 2nd embodiment of this invention. It is a block diagram showing an example of the composition of the data recording and reproducing device by a 3rd embodiment of this invention. It is a flow chart which shows a flow of processing in a 3rd embodiment of this invention. FIG. 14 is a block diagram illustrating an example of a configuration of a data recording / reproducing device according to a fourth embodiment of the present invention. FIG. 11 is a block diagram illustrating an example of a configuration of a conversion information generation circuit according to a modification of the present invention.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 ... Optical disk 2 ... CPU
Reference Signs List 3 servo part 4 spindle motor 5 optical pickup 6 RF amplifier 7 EFM demodulation circuit 8 CIRC decoder 9 error interpolation circuit 10 first Data conversion circuit 11 ... D / A converter 12 ... Second data conversion circuit 13 ... Subcode decoder 14 ... Display device 15 ... Operation device 16, 17, 21 ... Switch 18: Conversion information generation circuit 19: Output terminal 20: Data conversion unit 22: Data change unit

Claims (31)

Reproducing means for reading data from the recording medium;
A data reproducing device, comprising: data changing means for giving a different change to the read data every time the data is read or once for a plurality of times of reading.   2. The data reproducing apparatus according to claim 1, wherein said data changing means applies different changes to the same data repeatedly read at each repetition or at a rate of one for a plurality of repetitions. apparatus. The data changing means is:
A conversion information generating means for generating different conversion information at each reading or at a rate of one for a plurality of readings;
2. The data reproducing apparatus according to claim 1, further comprising: data converting means for converting data read from the recording medium by the reproducing means on the basis of the conversion information supplied from the conversion information generating means. . The data recorded on the recording medium is digital data,
The data conversion means further includes D / A conversion means for performing D / A conversion of digital data read from the recording medium by the reproduction means based on the conversion information supplied from the conversion information generation means,
The data conversion means converts the digital data read from the recording medium by the reproduction means based on the conversion information supplied from the conversion information generation means, and supplies the digital data to the D / A conversion means. And at least one of a second data converter for converting the analog data supplied from the D / A converter based on the conversion information supplied from the conversion information generator. 4. The data reproducing apparatus according to claim 3, wherein: Storage means for storing data;
When the registration of the reproduction characteristic is instructed, the conversion information used for the data conversion is stored in the storage unit, and when the reproduction based on the registered reproduction characteristic is instructed, the conversion information is read from the storage unit. 4. The data reproducing apparatus according to claim 3, further comprising: control means for supplying the data to the data converting means. Storage means for storing data;
When the registration of the reproduction data is instructed, the data converted by the conversion information is stored in the storage unit, and when the reproduction of the registered reproduction data is instructed, the control unit reads the data from the storage unit. The data reproducing apparatus according to claim 3, further comprising:   4. The data reproducing apparatus according to claim 3, wherein said conversion information generating means is a random number generating means for generating a random number every time reading is performed or once for a plurality of readings.   4. A data reproducing apparatus according to claim 3, wherein said conversion information generating means is a time information generating means for generating time information at every reading or at a rate of once for a plurality of readings.   4. The pressing information generating means according to claim 3, wherein the conversion information generating means is pressing information generating means for generating pressing information corresponding to pressing at every reading or at a rate of one for a plurality of readings. Data playback device.   4. The data reproducing apparatus according to claim 3, wherein said conversion information generating means is environmental information generating means for generating environmental information every time reading is performed or once for a plurality of readings.   4. The data reproducing apparatus according to claim 3, wherein said conversion information generating means is a position information generating means for generating position information every time reading is performed or once for a plurality of readings. The data is audio data, and the data changing means applies a change to the read data such that a different sound is generated at each reading or at a rate of once for a plurality of readings. The data reproducing apparatus according to claim 13, wherein:   The change is at least one of emphasis / suppression of a predetermined band, a change in volume, a change in the number of quantization bits, a change in sampling frequency, a change in bit rate, a change in tempo, a high-frequency addition, a fluctuation addition and a reverberation addition. 13. The data reproducing apparatus according to claim 12, wherein The data is video data,
2. The data according to claim 1, wherein the data changing means changes the read data every time a read operation is performed or at a rate of one time for a plurality of read operations so that a different image is obtained. Playback device.   15. The method according to claim 14, wherein the change is at least one of a color tone change, a luminance change, a contrast change, an edge emphasis, an emphasis / suppression of a predetermined band, a frame frequency change, a bit rate change, and fluctuation addition. Data playback device. A reproducing step of reading data from the recording medium;
A data changing step of giving a different change to the read data each time the data is read or once for a plurality of times of reading. Recording and reproducing means for writing data to the recording medium, and reading data from the recording medium,
A conversion information generating means for generating different conversion information every time data is read or once for a plurality of data reads;
Data converting means for converting data read from the recording medium by the recording / reproducing means based on the conversion information supplied from the conversion information generating means or the conversion information read from the recording medium. ,
A data recording / reproducing apparatus wherein the recording / reproducing means records conversion information on the recording medium when registration of reproduction characteristics is instructed.   18. The data recording / reproducing apparatus according to claim 17, wherein the conversion information generating means generates different conversion information every time the same data is repeatedly read or at a rate of once for the same data read a plurality of times. apparatus. The data recorded on the recording medium is digital data,
D / A for digital-to-analog conversion of the digital data read from the recording medium by the recording / reproducing means based on the conversion information supplied from the conversion information generating means or the conversion information read from the recording medium. Further comprising a conversion means,
The data converting means converts the digital data read from the recording medium by the recording / reproducing means based on the conversion information supplied from the conversion information generating means or the conversion information read from the recording medium. And converting the analog data supplied from the first data converter supplied to the D / A converter and the analog data supplied from the D / A converter from the conversion information supplied from the conversion information generator or from the recording medium. 18. The data recording / reproducing apparatus according to claim 17, further comprising at least one of second data conversion means for performing data conversion based on the read conversion information. Storage means for storing data;
When the registration of the reproduction characteristic is instructed, the conversion information used for the data conversion is stored in the storage unit, and when the reproduction based on the registered reproduction characteristic is instructed, the conversion information is read from the storage unit, Control means for supplying to the data conversion means;
The data recording / reproducing apparatus according to claim 17, further comprising: Storage means for storing data;
When the registration of the reproduction data is instructed, the data converted by the conversion information is stored in the storage unit, and when the reproduction of the registered reproduction data is instructed, the control unit reads the data from the storage unit. The data recording / reproducing apparatus according to claim 17, further comprising:   18. The data recording / reproducing apparatus according to claim 17, wherein the conversion information generating means is a random number generating means for generating a random number every time reading is performed or once for a plurality of readings.   18. The data recording / reproducing apparatus according to claim 17, wherein said conversion information generating means is a time information generating means for generating time information at every reading or at a rate of once for a plurality of readings. .   18. The pressing information generating means according to claim 17, wherein said conversion information generating means is pressing information generating means for generating pressing information corresponding to pressing at every reading or at a rate of once for a plurality of readings. Data recording / reproducing device.   18. The data recording / reproducing apparatus according to claim 17, wherein said conversion information generating means is environmental information generating means for generating environmental information every time reading is performed or once for a plurality of readings. .   18. The data recording / reproducing apparatus according to claim 17, wherein said conversion information generating means is a position information generating means for generating position information every time reading is performed or once for a plurality of readings. . The data is audio data,
18. The data conversion according to claim 17, wherein the data conversion is a data conversion for giving a different sound to the read data at every reading or at a rate of once for a plurality of readings. The data recording / reproducing apparatus according to the above.   The change is at least one of emphasis / suppression of a predetermined band, a change in volume, a change in the number of quantization bits, a change in sampling frequency, a change in bit rate, a change in tempo, a high-frequency addition, a fluctuation addition and a reverberation addition. 28. The data recording / reproducing apparatus according to claim 27, wherein: The data is video data,
18. The data recording according to claim 17, wherein the data conversion changes the read data every time a read is performed or at a rate of one time for a plurality of read operations. Playback device.   30. The change according to claim 29, wherein the change is at least one of a color tone change, a luminance change, a contrast change, an edge emphasis, an emphasis / suppression of a predetermined band, a frame frequency change, a bit rate change, and fluctuation addition. Data recording and reproducing device. A conversion information generating step of generating different conversion information every time data is read from the recording medium or once for a plurality of data readings;
A data conversion step of converting data read from the recording medium based on the conversion information generated by the conversion information generation step;
When the registration of the reproduction characteristics is instructed, a conversion information recording step of recording the conversion information on the recording medium,
And a data conversion step of converting data read from the recording medium based on the conversion information read from the recording medium when reproduction based on the registered reproduction characteristics is instructed. Characteristic data recording / reproducing method.

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