Abstract: The present invention provides a method for reducing noise using a plurality of recording copies. The present invention produces a master file with lower noise than the available recording copies, and avoids the problems of losing musical content caused by prior art pop and click removers. The system comprises a recording playback unit, a computer system with a sound input capability, and a high capacity storage system such as a CD recorder. In operation, a plurality of recording copies of a single recording are played on the playback unit. These recordings are digitized by the computer and a separate recording file is formed for each copy of the recording. The recording files are then synchronized. The samples from each of the recording files are then averaged to reduce the noise components.

Abstract: According to a first aspect of the invention, digital image data are recorded in the form of compressed codewords with check information and flags. The flags indicate codewords containing uncorrected errors. Each time the data are copied, error detection and correction are performed and the flags are updated to indicate any new uncorrectable errors that are detected. The flags can be used for error concealment, to avoid error miscorrection, and to permit the check information to be regenerated each time the data are copied. According to a second aspect of the invention, when image data are copied, the same check information is used to perform error detection and correction twice. Flags identifying uncorrected errors can be transferred from the first error-detecting-and-correcting process to the second.

Abstract: A synchronous dubbing system for dubbing data between any one of a plurality of record units and any one of a plurality of playback units, wherein a command for causing all playback units connected from a record unit through a bus line to be released from a playback pause state is sent when the record pause state of the record unit is released in the record pause state of the record unit and in the playback pause state of the playback unit, a category code and a status of each of the playback units being sent through the bus line corresponding to the command.

Abstract: A magnetic recording and reproducing apparatus capable of recording video, audio and other information on a magnetic tape by, for example, the helical scanning method. A rotary head is rotated at an m-fold speed to record intermittent tracks on the magnetic tape so that real-time simultaneous monitoring is performed. By high-speed dubbing due to high-density intermittent recording and by increasing the number of repetition of track scanning, the information is recorded and reproduced simultaneously with a plurality of channels. Any tracking error is detected to form a continuous and uniform track pattern. With this intermittent comb-shaped recording, reciprocating recording and reproducing can be realized.

Abstract: A method of controlling signal lines among a number of audio/video units in a system where a central unit including a selector and the other audio/video units are mutually connected via a single control bus and also via audio/video signal cables includes the steps of enabling the central unit to manage identification numbers of the audio/video units on the control bus and also connection data among the audio/video units, classifying the audio/video units in accordance with the respective categories, connecting the signal line between one of the audio/video units and another one of the units, enabling one audio/video unit to designate by category the other audio/video unit to be connected and, after such designation, enabling the central unit to select the specific audio/video unit that satisfies the requirement, out of all of the audio/video units of the designated category, and then switching the selector of the central unit thereby connecting the desired signal line between the relevant audio/video units.

Abstract: Devices for the duplication of industrial magnetic tapes. More particularly it relates to an electronic device for the fast duplication of magnetic tapes. The device, through a microprocessor, activates selecting circuits to control static memory cards of a memory bank. The selecting circuit generates proceeding signals and selecting signals which single out memory cells of the memory bank for writing and reading. These selecting signals and proceeding signals cause a subdivision of the cards in the memory bank, allotting a part of the memory for reading and another part for writing. The selecting and the proceeding signals are carried out through digital signals. The final digital signals are subjected to a digital-to-analog conversion.

Abstract: A moving image processing method and apparatus for efficient access to a large amount of moving image data. By the hierarchical structure of storage media for storing the compressed moving image data, when reproduction of compressed moving image data is displayed, the data can be transferred with an adjustment of the transfer speed to a predetermined display speed of the moving image. More specifically, the compressed moving image data is transferred from a first storage medium having a large capacity and a slow access speed to a second storage medium having a small capacity and a fast access speed and further transferred from the second storage medium to an expander which expands the data and displays the expanded data. The compressed moving image data and the corresponding administrative information are stored separately in different storage media which are accessible independently of each other.

Abstract: A high speed dubbing apparatus for producing magnetic tapes such as video, audio or computer soft tapes, is provided. Typical form of the apparatus may comprise 2 master tape playback devices for synchronously playing back 2 divided master tapes respectively recorded with 2 divided master signals obtained by dividing time-divisionally an original master signal having an original data sequence by 2 and for outputting the 2 divided master signals, a double speed recording signal producing device for time-compressing each of the 2 divided master signals to 1/2 to obtain a double speed recording signal from the 2 divided master signals while restoring the original data sequence in the double speed recording signal and a recording device for recording the double speed recording signal on a slave tape running at a speed which is twice the nominal playback speed of the slave tape.

Abstract: A high speed dubbing apparatus for producing magnetic tapes such as video, audio or computer soft tapes, is provided. Typical form of the apparatus may comprise 3 master tape playback devices for synchronously playing back 3 divided master tapes respectively recorded with 3 divided master signals obtained by dividing time-divisionally an original master signal having an original data sequence by 3 and for outputting the 3 divided master signals, a triple speed recording signal producing device for time-compressing each of the 3 divided master signals to 1/3 to obtain a triple speed recording signal from the 3 divided master signals while restoring the original data sequence in the triple speed recording signal and a recording device for recording the triple speed recording signal on a plurality of slave tapes running at a speed which is 3 times the normal playback speed of the slave tapes.

Abstract: A recording and reproducing apparatus includes a connection for contact with electrical terminals of a record medium cassette set in the recording and reproducing apparatus and incorporating a memory containing audio/video data and record data, such as the length of the tape in the cassette, whether it contains recorded data, or whether it is a rental video, wherein the record medium cassette does not have to be loaded in the apparatus for contact with the connection; a circuit for reading the data; and a circuit for communicating the read data to a second recording and reproducing apparatus for dubbing.

Abstract: In an automated information storage and retrieval library system having a single recording drive, a backup or copying operation is preferably performed in a single-threaded fashion whereas in a library having two or more drives, a multi-threaded approach is preferred. The present invention provides a library with the capability to back up information from one piece of media to another in an adaptive fashion. A determination is made whether there is one drive unit available in the library or whether at least two are available. A multi-threaded backup approach is employed if there are two available recording drives in the library and a single-threaded approach is employed if there is only one available drive. In addition to making the determination when a copy request is received, the library controller can make the determination at various stages of a copy operation and adaptively change between single-threaded and multi-threaded approaches.

Abstract: In a digital signal recording and reproducing apparatus, a signal obtained by multiplexing an audio signal on a bit rate reduction encoded video signal is delivered as a transmission signal. The transmission signal is multiplexed with a data showing its content, such as a copy number of times data and an edit number of times data. Depending on the state of reproduction at a reproducing side apparatus, which is a source side of transmission, a control data for controlling a recording side apparatus, which is a destination of transmission, is also multiplexed.

Abstract: A camera comprises an optical system, an imaging element, an electric circuit for processing a signal output from the imaging element, a length of magnetic tape and a mechanism for driving the tape. The camera is for photographing objects only. The magnetic tape can be rewind and signals can be reproduced from the tape, only after the camera has been connected to a playback device.

Abstract: In an audio sound recording/reproducing apparatus, instruction information related to a document is recorded in a recording region of a semiconductor memory together with the document. In the semiconductor memory, flags related to a document portion and an instruction portion, and the addresses of the document and the instruction portions are provided. At the time of reproduction, the instruction portion is reproduced prior to reproduction of the document portion. When the content of the semiconductor memory is stored in a built-in memory in the apparatus, the instruction portion is stored before the document portion is stored. Since the instruction portion is reproduced prior to the document portion at the time of reproduction, the user does not have to retrieve the instruction portion.

Abstract: According to a first aspect of the invention, digital image data are recorded in the form of compressed codewords with check information and flags. The flags indicate codewords containing uncorrected errors. Each time the data are copied, error detection and correction are performed and the flags are updated to indicate any new uncorrectable errors that are detected. The flags can be used for error concealment, to avoid error miscorrection, and to permit the check information to be regenerated each time the data are copied. According to a second aspect of the invention, when image data are copied, the same check information is used to perform error detection and correction twice. Flags identifying uncorrected errors can be transferred from the first error-detecting-and-correcting process to the second.

Abstract: Methods and systems are provided for dubbing a digital video signal on a record medium wherein the digital video signal includes variable-length codes arranged in a fixed-length word format. The variable-length codes are separated from the fixed-length word format data. Error codes indicating errors in the separated variable-length codes are provided. The separated variable-length codes together with the error codes are formed into new data blocks having a fixed-length word format and the new data blocks are recorded on a record medium.

Abstract: An optical tape duplicator is disclosed for making multiple copies of recorded optical tape by continuous contact recording. An information-bearing master tape held in intimate contact with an optical tape are passed through a recording zone exposed to a beam of radiant energy for recording information stored by the master tape to the optical tape. The master tape contains transmissive and non-transmissive portions that represent the information stored by the master tape. The optical tape is sensitive to the beam of radiant energy. The beam of radiant energy passes through the transmissive portions of the master tape while making contact with the optical tape in the recording zone, causing information stored by the master tape to be recorded by the optical tape as indicia where the optical tape was exposed to the beam of radiant energy.

Abstract: Transmission and reception of control signals and response signals are made through bidirectional communication lines between a control device and a reproducing VTR and between the control device and a recording VTR to measure rise-up times D1 and D2 of mechanical systems of the reproducing VTR and the recording VTR. Thereafter, the tapes of the reproducing VTR and the recording VTR are rewound from their editing points by a predetermined time T, and then kept to a pause state. Subsequently, when a nominal time X for releasing the pause of the reproducing VTR and the recording VTR is specified, the reproducing VTR and the recording VTR actually receive the control signal to release from pause at a time of X-D1 and a time of X-D2 respectively, and the recording VTR is so controlled as to start its recording operation at a time of X+T.

Abstract: A method for transmitting index information in video tape recorders. During playback, index information which was recorded on a tape is retrieved. This index information is superimposed upon the vertical retrace blanking period of the video signal. transmitting said superimposed signal. When the superimposed signal is received, the index information is retrieved from the superimposed signal. The video signal is then recorded with the index information.

Abstract: Devices for the duplication of industrial magnetic tapes, more particularly an electronic device for the fast duplication of magnetic tapes. The device, through a microprocessor, activates selecting circuits to control static memory cards of a memory bank. The selecting circuit generates proceeding signals and selecting signals which single out memory cells of the memory bank for writing and reading. These selecting signals and proceeding signals cause a subdivision of the cards in the memory bank, allotting a part of the memory for reading and another part for writing. The selecting and the proceeding signals are carried out through digital signals. The final digital signals are subjected to a digital-to-analog conversion.

Abstract: A customized album recording system is under the control of a central microprocessor or mini-computer. A master library or storage medium is filled with a repertoire of recorded information items (such as musical selections) which may originate with any suitable source, such as phonograph records, tapes, sound tracks, compact discs, or the like. Each information item is stored in the library under its own address. On read out, an operator keys in the addresses identifying the selected items which are read out of the library medium and stored in a large capacity memory, usually to provide about forty-five minutes of total listening time. Then, all of the music is read out of that large capacity memory and recorded at a high speed onto a suitable album size medium, such as a tape cassette, for example. The source music and the customized album music are usually recorded in an analog form. The music which is processed within the system is in a digital form.

Abstract: A moving image processing method and apparatus for efficient access to a large amount of moving image data. By the hierarchical structure of storage media for storing the compressed moving image data, when reproduction of compressed moving image data is displayed, the data can be transferred with an adjustment of the transfer speed to a predetermined display speed of the moving image. More specifically, the compressed moving image data is transferred from a first storage medium having a large capacity and a slow access speed to a second storage medium having a small capacity and a fast access speed and further transferred from the second storage medium to an expander which expands the data and displays the expanded data. The compressed moving image data and the corresponding administrative information are stored separately in different storage media which are accessible independently of each other.

Abstract: In a high-speed dubbing method, calculations are executed to find waiting time by which the amount of remaining audio data stored in a memory is minimized upon completion of a data transferring process to the next recordable area, and by stopping the recording operation for the waiting time, the amount of the remaining audio data in the memory is always kept minimum, immediately before the accessing process and the track jumping process with respect to the next recordable area. Therefore, even if any disturbance occurs during the dubbing operation with respect to a plurality of intermittent recordable areas, it is possible to eliminate the overflow of the audio data, and to improve the reliability of the dubbing operation.

Abstract: An information recording and reproducing apparatus includes an encoding circuit for encoding information codes and for adding redundant codes to the information codes to form error detection and/or correction codes, a recording and reproducing head for recording and reproducing the information codes and the redundant codes on and from the recording medium and a decoding circuit for detecting and/or correcting errors in reproduced information codes by using the redundant codes. The apparatus has an output terminal for externally outputting the information codes partially processed through the decoding circuit and only a part of the redundant codes.

Abstract: A high speed dubbing apparatus for producing magnetic tapes such as video, audio or computer soft tapes, is provided. Typical form of the apparatus may comprise 2 master tape playback devices for synchronously playing back 2 divided master tapes respectively recorded with 2 divided master signals obtained by dividing time-divisionally an original master signal having an original data sequence by 2 and for outputting the 2 divided master signals, a double speed recording signal producing device for time-compressing each of the 2 divided master signals to 1/2 to obtain a double speed recording signal from the 2 divided master signals while restoring the original data sequence in the double speed recording signal and a recording device for recording the double speed recording signal on a slave tape running at a speed which is twice the nominal playback speed of the slave tape.

Abstract: In a digital signal recording and reproducing apparatus, a signal obtained by multiplexing an audio signal on a bit rate reduction encoded video signal is delivered as a transmission signal. The transmission signal is multiplexed with a data showing its content, such as a copy number of times data and an edit number of times data. Depending on the state of reproduction at a reproducing side apparatus, which is a source side of transmission, a control data for controlling a recording side apparatus, which is a destination of transmission is also multiplexed.

Abstract: A single deck dual tape path videocassette recorder/playback system enabling near simultaneous multiple functions with respect to a broadcast or cable communicated television signal. The system consists of standard elements which allow the receipt of a videocassette, the extracting and return of video tape from and to the videocassette, and the recording of a broadcast or cable communicated signal. The system also consists of two tape path assemblies and a videotape compartment consisting of a tape feed channel, a storage assembly, and a vacuum system. All elements are included within a single housing utilizing a common power supply, tuner, controls, and switching and control circuitry enabling simultaneous multiple functions using both tape paths, as well as additional function selections.

Abstract: A method of editing a plurality of information signals recorded on a recording medium is provided. According to this method, information signals which are required for editing and which are included among the signals already recorded on the recording medium are indicated. Then such indicated signals are reproduced and recorded on the same recording medium in sequence and a recording control device is caused to recognize the area on the recording medium where the indicated signals are not newly recorded, as an empty area free of recorded signals, to thereby make the best use of the recording area of the recording medium.

Abstract: A mastering apparatus which can produce both a format signal for a compact disk and another format signal for a minidisk. Most of the components of a mastering processing system for a compact disk are common to a mastering processing system for a minidisk. An address generator for generating an address upon mastering processing for a minidisk is provided. The operation condition of the address generator is controlled by controlling a digital signal processor of the address generator. When a compact disk format signal is to be produced, the address generator is controlled to a no-operation mode so that the apparatus operates as a compact disk mastering apparatus. On the other hand when a minidisk format signal is to be produced, the address generator is controlled to an operation mode so that the apparatus operates as a minidisk mastering apparatus.

Abstract: A video signal recording and/or reproducing apparatus includes a copy guard processing detecting current which can correctly judge whether or not a copy guard is applied to an input video signal and prevents copy guard processing from being applied to a video signal to which a copy guard is not applied.

Abstract: A compact disk playback/recording system having a compact disk playback apparatus and a cassette recording apparatus.

Abstract: In an apparatus for producing duplicate tapes by transmitting signals reproduced by a master VTR to a plurality of duplicating VTRs for simultaneous recording on respective tapes in the latter; control signals from a bidirectional remote control unit are modulated with a first modulating frequency and are transmitted over a bidirectional control signal line to the duplicating VTRs. If a response is required from one of the duplicating VTRs, response signals from such duplicating VTR are modulated with a second modulating frequency different from the first modulating frequency and, during a pause in signal transmission from the remote control unit, the modulated response signals are transmitted to the remote control unit over the bidirectional control signal line.

Abstract: In an information processor, code errors in a compressed information code train with an added error correction code are corrected using the error correction code. The error corrected compressed information code train is decoded using decoding corresponding to the compression encoding and an information code included in the information code train that is uncorrectable using the error correction code is produced. The compressed information code train inputted to the decoder and the produced information code train are output. The outputted produced information code train is converted into analog data which is output.

Abstract: A method of copying magnetic tapes having a message information track and a control track with supplementary information formatted as a digital word encoded as a plurality of successive data bits. The method includes the steps of playing the tape and reproducing the message track and the control track. The message information is coupled to a second playback/record device for recording. The plurality of successive data bits reproduced from the control track is stored in a digital memory to decode the digital word. The stored digital word is transferred to the second playback/record device and is reencoded as a plurality of successive data bits and recorded in the control track of the second playback/record device.

Abstract: A moving image processing method and apparatus for efficient access to a large amount of moving image data. By the hierarchical structure of storage media for storing the compressed moving image data, when reproduction of compressed moving image data is displayed, the data can be transferred with an adjustment of the transfer speed to a predetermined display speed of the moving image. More specifically, the compressed moving image data is transferred from a first storage medium having a large capacity and a slow access speed to a second storage medium having a small capacity and a fast access speed and further transferred from the second storage medium to an expander which expands the data and displays the expanded data. The compressed moving image data and the corresponding administrative information are stored separately in different storage media which are accessible independently of each other.

Abstract: In a magnetic disk recorder, a displacement of recording timings of a video signal and a timebase-compressed audio signal on a master disk can be corrected on a slave disk. When an output of a master disk reproducing apparatus is a video signal, a vertical synchronizing signal from a synchronizing separating circuit is delayed by a delay time of substantially 7H (H is the horizontal period) and supplied to a phase servo circuit in a slave disk recording apparatus as a reference signal, while when the output of the master disk reproducing apparatus is the timebase-compressed audio signal, a start flag signal accompanying with the timebase-compressed audio signal is detected by a flag detecting circuit and the start flag signal thus detected is employed as a pseudo vertical synchronizing signal, which is supplied to the phase servo circuit in the slave disk recording circuit as a reference signal.

Abstract: A double-deck video tape recorder has two tape cassette slots defined in a front panel thereof for inserting and ejecting respective magnetic tape cassettes therethrough. The double-deck video tape recorder also has a pair of drive mechanisms disposed in a housing for recording information on and reproducing information from the magnetic tape cassettes inserted in the respective drive mechanisms through the tape cassette slots. When an edit direction key is pressed, a control system places one of the drive mechanisms in a playback mode and another of the drive mechanisms in a recording mode. When a start/pause key is pressed, the control system starts to operate the one of the drive mechanisms to reproduce recorded information from the magnetic tape cassette inserted therein and also to operate the other drive mechanism to record the reproduced information in the magnetic tape cassette inserted therein.

Abstract: An optical recording and/or reproducing apparatus is operable to transmit at a high speed a long-play program comprising video and/or audio signals and has a capability of recording the program during a playback mode at a normal reproducing speed of the program. At a transmitter side, a digital data of the program is divided on a time-sharing basis and is then reproduced from an optical disc at a high transfer rate simultaneously with a plurality of channels of optical read/write heads so that, when the digital data is transmitted, the length of time during which the transmission occupies a transmission line can be reduced. On the other hand, at a receiver side, the transmitted signals are recorded on the optical disc at a high transfer rate simultaneously using plural channels of optical read/write heads.

Abstract: Video recording apparatus (10) includes master video apparatus (12) including a video camera(16) and a master video recording device (18). The master video recording device is respectively started and stopped by respectively first and second signals (S1 and S2) provided by the camera. The master recording device produces an original video recording. The original video recording includes a time-code (TC) which is not visible in frames of the original recording when it is replayed. A synchronous duplicate video recording apparatus (14) includes a duplicate video recording device (26) and is connected to the master video recording apparatus. The duplicate video recording device provides a duplicate video recording including the time-code. The time-code is visible in frames of the duplicate recording when it is replayed. The synchronous duplicate video recording apparatus includes circuitry (28) which enables the master and duplicate video recording devices to be started and stopped synchronously.

Abstract: A disk replication apparatus is used when the stamper and the like of a compact disk is made from an original compact disk, and the apparatus permits the compact disk to be simply and securely made. A compact disk is replicated in such a manner that main data D1 continued in the format of audio data is recorded by using a reproduction subcode Q as reference wherein the main data D1 is recorded while keeping a lag between the subcode Q and frame data D1 by using the reproduction subcode Q as the reference, and further a read-in area is separately formed and then a predetermined pose section is formed so that the frame data D1 and the like are continued.

Abstract: An apparatus for generating a high speed dubbing signal to be recorded by an external recording apparatus. The high speed dubbing signal, whose pitch is N times that of a digital input signal, is generated as follows. An encoding circuit subsamples the digital input signal consisting of frame signals each of which consists of N field signals, so that each frame signal is compressed by a factor of N to be contained in one field interval. A digital signal recording and reproducing circuit including a recording and reproduction system, records on a tape, at a normal tape speed and at a normal head drum rotational frequency, the compressed signal in such a manner that each field including the compressed signal appears once per frame interval, and then selectively reproduces from the tape the field including the compressed signal at a tape speed N times the normal speed and at the normal drum speed.

Abstract: A method for duplicating data on a rotating magnetic disk in sectors on concentric tracks so that the sectors are aligned with each other from track to track and referenced to an index mark. The index mark is sensed as the disk rotates. The time elapsed between sensed index marks is counted to define the angular displacement of the disk. A magnetic head is moved successively to the tracks on the disk. Data to be duplicated is recorded in sequence, sector by sector, on the respective tracks beginning at different offsets from the index mark such that recording begins with the next sector encountered after the head arrives at the respective tracks.

Abstract: A read only disc according to the present invention has a spiral recording track formed on the surface thereof. The recording track includes a plurality of record unit blocks formed continuously by an optical recording method, wherein each record unit block includes a dubbing permitted area and a dubbing inhibited area. Digital audio information having compressed data is recorded in the dubbing permitted area. On the other hand, display data associated with the digital audio information is recorded in the dubbing inhibited area. Thus, digital dubbing of digital audio information can be carried out and dubbing of display data is prevented to ensure dominance of the read only disc as a master software.

Abstract: A dubbing system for duplicating a tape-shaped recording medium on which an amount of information signals for a given period of time are recorded in each of many tracks having different azimuth angles between adjacent tracks includes a reproducing apparatus wherein N rotary heads (N: an integer which is at least 2) which have different azimuth angles between adjacent heads and rotate in a closely adjacent state are used for reproducing, as N channel signals, information signals from N adjacent tracks formed on a first tape-shaped recording medium, and a recording apparatus wherein N rotary heads which have different azimuth angles between adjacent heads and rotate in a closely adjacent state are arranged to receive the reproduced N channel signals and to record them on a second tape-shaped recording medium while forming N adjacent tracks on the second tape-shaped recording medium.

Abstract: A device (1) for recording and playing back information signals has a connection apparatus (17) via which another such device (35) can be connected to the device (1) in order to carry out a copy operation. The other device (35) emits a control voltage U1 when a high level H with the "playback" mode of operation is switched on in the same. A copy instruction can be intentionally issued to the device (1) for example by actuating a key (46). The device (1) has a first detector (49) for detecting the control voltage U1 with a high level H emitted by the other device (35) and a second detector (50) for detecting an intentionally issued copy instruction. The "record" mode of operation is only switched on in the device (1) in order to carry out a copy operation in the event of both detectors (49, 50) being triggered simultaneously.

Abstract: A video signal processing system for a double deck VTR which can accomplish the simultaneous recording/playing function in both video decks and the dubbing function between two types of video tapes, wherein input/output select switches and input/output analog switches are located for appropriately processing the video signal between the respective devices of the double deck VTR.

Abstract: In accordance with the duplication of bit-patterns on a recording medium of the present invention, presence of gaps as defined by one or more words of predetermined code in data is judged, then with having these gaps as the write-succession points, and placing an unwritable bit-pattern in these respective gaps, data is written in onto the recording medium of the transfer-destination. Thus, the write-succession points can be determined, and the occurrence of bit-shift can be avoided. In addition, transmission of data on the recording media over a long distance become possible.

Abstract: An arrangement for reading a digital audio signal from a master medium (7) and storing it in a digital storage medium (10, 90, 90') at a first bit rate in a first step, and for repeatedly reading the digital audio signal from the storage medium and recording the digital audio signal on a recording medium (20') at a second bit rate in a second step. The digital storage medium is adapted to store a digital information signal which is a representation of a first music program (M1) and a digital information signal which is a representation of a second music program (M2). The arrangement (FIG. 1b) is further adapted to repeatedly read the digital information signal representing the first music program from the digital storage medium while reading the digital information signal representing the second music program into the digital storage medium in the second step.

Abstract: A customized album recording system is under the control of a central microprocessor or mini-computer. A master library or storage medium is filled with a repertoire of recorded information items (such as musical selections) which may originate with any suitable source, such as phonograph records, tapes, sound tracks, compact discs, or the like. Each information item is stored in the library under its own address. On read out, an operator keys in the addresses identifying the selected items which are read out of the library medium and stored in a large capacity memory, usually to provide about forty-five minutes of total listening time. Then, all of the music is read out of that large capacity memory and recorded at a high speed onto a suitable album size medium, such as a tape cassette, for example. The source music and the customized album music are usually recorded in an analog form. The music which is processed within the system is in a digital form.

Abstract: A disc recording/reproducing apparatus according to the present invention intermittently records and reproduces compressed digital audio data in normal recording/reproduction. In high-speed dubbing of digital audio data, two of such apparatuses are used, wherein compressed digital audio data is continuously reproduced from a disc for reproduction by the reproduction side apparatus to be directly applied to the recording side apparatus and continuously recorded on a disc for recording. Thus, the compressed high-speed dubbing of the digital audio data can be achieved without increasing a rotation speed of the disc even in high-speed dubbing.