# US 5,706,260 A · Apparatus for and method of synchronously recording signals onto a disk medium by a single head

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- Number: US 5,706,260 A
- Document ID: US5706260A
- Status: Granted
- Kind: A
- Application number: 08/205,050
- Filed: 1994-03-02
- Granted: 1998-01-06
- Earliest claimed: 1993-03-09
- Assignees: Sony Corporation
- Inventors: Yoshio Kishi; Masato Noguchi; Hiroyuki Fujikura; Teruhito Noshiro
- Web page: https://patentgrep.com/patent/US5706260A

## CPC

- G11B 20/10: Digital recording or reproducing
- G11B 7/26: Apparatus or processes specially adapted for the manufacture of record carriers
- G11B 11/10595: {Control of operating function}
- G11B 20/00007: {Time or data compression or expansion (audio compression based on psychoacoustics G10L19/00; data processing for reproducing audio data at different playback speeds G10L21/04; video compression H04N19/00; data compression per se H03M7/30)}
- G11B 27/005: {Reproducing at a different information rate from the information rate of recording (for television signals H04N5/783)}
- G11B 27/036: Insert-editing
- G11B 27/105: {of operating discs}
- G11B 27/11: by using information not detectable on the record carrier
- G11B 27/34: Indicating arrangements {(indicating means incorporated in magazine or cassette G11B23/046 and G11B23/0875; indicating measured values in general G01D)}
- G11B 27/36: Monitoring, i.e. supervising the progress of recording or reproducing {(for digital recording G11B20/00 and s.gr.; for monitoring, testing or measuring of TV recorders of the type covered by H04N5/76 and subgroups, see H04N17/06)}
- G11B 27/034: on discs (G11B27/036, G11B27/038 take precedence)
- G11B 27/038: Cross-faders therefor
- G11B 27/19: by using information detectable on the record carrier
- G11B 27/3027: {used signal is digitally coded}
- G11B 2220/2525: Magneto-optical [MO] discs
- G11B 2220/65: wherein solid state memory is used for storing indexing information or metadata
- G11B 2220/90: Tape-like record carriers
- G11B: INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER (recording measured values in a way that does not require playback through a transducer G01D9/00; recording or playback apparatus using mechanically marked tape, e.g. punched paper tape, or using unit records, e.g. punched or magnetically marked cards G06K; transferring data from one type of record carrier to another G06K1/18; circuits for coupling output of reproducer to radio receiver H04B1/20; gramophone pick-ups or like acoustic electromechanical transducers or circuits therefor H04R)

## Abstract

A disk recording and reproducing apparatus which realizes a simultaneous recording function with a simple pickup system. The apparatus comprises a recording and reproducing head, a first memory for receiving and storing input signals at a first rate and supplying the stored signals at a second rate higher than the first rate so as to be recorded onto a disk medium at the second rate by the head, a second memory for receiving and storing signals reproduced at the second rate by the head and outputting the stored signals at a rate lower than the second rate, and control means for controlling the head to reproduce the Nth block (N is a natural number) and then repeating, while N is repetitively incremented, a sequence of operations of reproducing the N+1th block, moving to a position of the disk medium at which the Nth block is recorded, recording the input signals supplied thereto from the first memory means at the position of the disk medium at which the Nth block is recorded, and moving to another position of the disk medium at which the N+2th block is recorded.

## Claims

### Claim 1

An apparatus for recording and reproducing signals in data blocks onto and from a disk medium, comprising:
a recording and reproducing head;
first memory means for receiving and storing input signals at a first rate and supplying the stored signals at a second rate, which is higher than the first rate, to be recorded onto the disk medium at the second rate by means of the recording and reproducing head;
second memory means for receiving and storing signals reproduced from the disk medium at the second rate by means of the recording and reproducing head and outputting the stored signals at a rate lower than the second rate; and
control means for controlling the recording and reproducing head to reproduce an Nth block, N being a natural number, and then to repeat a sequence of operations of reproducing an N+1th block, moving to a position of the disk medium at which the Nth block is recorded, recording the input signals supplied thereto from the first memory means at the position of the disk medium at which the Nth block is recorded, moving to another position of the disk medium at which an N+2th block is recorded, and incrementing N.

### Claim 2 (depends on 1)

An apparatus according to claim 1, wherein the rate at which the second memory means outputs the stored signals is equal to the first rate.

### Claim 3 (depends on 1)

An apparatus according to claim 1, wherein the second rate is controlled in accordance with a speed of rotation of the disk medium.

### Claim 4 (depends on 1)

An apparatus according to claim 1, wherein each of the first memory means and the second memory means each comprise a buffer memory of a first-in first-out type.

### Claim 5 (depends on 1)

An apparatus according to claim 1, wherein the second rate is set equal to or higher than 2.5 times the first rate.

### Claim 6 (depends on 1)

An apparatus according to claim 1, wherein the recording and reproducing head includes an optical pickup and a magnetic head positioned with the disk medium interposed therebetween.

### Claim 7

A method of recording and reproducing signals in a plurality of blocks onto and from a disk medium, wherein the signals are supplied to and stored into a first memory at a first rate and then outputted from the first memory to a recording and reproducing head at a second rate, which is higher than the first rate, to be recorded onto the disk medium and then the signals reproduced from the disk medium by the recording and reproducing head are supplied to and stored into a second memory at the second rate and outputted from the second memory at a rate lower than the second rate, comprising the steps of:
first, scanning a position of the disk medium at which an Nth block is recorded by means of the recording and reproducing head to reproduce the Nth block, N being a natural number;
then, repeatedly performing the following steps:
scanning another position of the disk medium at which an N+1th block is recorded by means of the recording and reproducing head to reproduce the N+1th block; moving the recording and reproducing head to the position of the disk medium at which the Nth block is recorded;
scanning the position of the disk medium at which the Nth block is recorded by means of the recording and reproducing head to record the signals supplied thereto from the first memory onto the disk medium by means of the recording and reproducing head; and
moving the recording and reproducing head to a further position of the disk medium at which an N+2th block is recorded; and
incrementing N.

### Claim 8 (depends on 7)

A method according to claim 7, wherein the rate at which the second memory means outputs the stored signals is equal to the first rate.

### Claim 9 (depends on 7)

A method according to claim 7, wherein the second rate is controlled in accordance with a speed of rotation of the disk medium.

### Claim 10 (depends on 7)

A method according to claim 7, wherein each of the first memory means and the second memory means each comprise a buffer memory of the first-in first-out type.

### Claim 11 (depends on 7)

A method according to claim 7, wherein the second rate is set equal to or higher than 2.5 times the first rate.

### Claim 12 (depends on 7)

A method according to claim 7, wherein the recording and reproducing head includes an optical pickup and a magnetic head positioned with the disk medium interposed therebetween.