US 6,208,476 B1Granted

Data recording device and method for recording data on a magnetic tape with error correction

AssigneeSamsung Electronics Co., Ltd.

InventorPan-Ki Park

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Abstract

A data recording device for recording data on a magnetic tape by means of a rotational head. A buffer memory buffers the data received through input/output unit, and a controller controls the data recording device to recording and reproduce data on and from the magnetic tape. A digital signal processor (DSP) converts the data from the buffer memory into a digital audio tape recorder (DAT) format, and a memory stores the converted data from the DSP to compare with the data recorded on the magnetic tape. A recording amplifier amplifies the converted data from the DSP and delivers the amplified converted data to the rotational head to record on the magnetic tape, and a reproduction amplifier amplifies the data reproduced from the magnetic tape by the rotational head. A data strobe circuit puts the data from the reproduction amplifier into input codes so as to generate distinction reproduction signals and clock signals, and first and second buffers receiving the distinction reproduction signal from the data strobe circuit are switched according to record/reproduction mode of the controller. A comparing unit compares the distinction reproduction signal received from the first buffer and the data stored in the memory according to a control signal from the controller so as to detect errors in the data from the I/O unit recorded on the magnetic tape.

Claims29

Dependent claims

A data recording and reproducing device for recording and reproducing electrical signals onto and from a magnetic tape by means of a rotational head, said device comprising:

input/output means for receiving first data from and transmitting second data to an external system;
first memory means for storing the first data received through said input/output means;
controller means connected to said first memory means, for controlling said device;
digital signal processing means connected to said controller means, for converting the first data received from said first memory means into converted data conforming to a digital audio tape recorder format;
second memory means connected to said digital signal processing means, for storing said converted data received from said digital signal processing means;
recording amplifier means connected to said digital signal processing means, for amplifying the converted data received from said digital signal processing means to generate amplified data, and transmitting said amplified data to said rotational head for recording on the magnetic tape;
data strobe means for receiving reproduced data from the magnetic tape and converting said reproduced data into a reproduction signal;
first and second buffer means commonly connected to said data strobe means for receiving said reproduction signal from said data strobe means during both a recording mode and a reproduction mode of said device, said first and second buffer means alternately enabling transmission of said reproduction signal based on operating modes of said device comprised of said recording mode and said reproduction mode, said first buffer means enabling transmission of said reproduction signal during said recording mode, said second buffer means enabling transmission of said reproduction signal to said external system as said second data during said reproduction mode;
and
comparing unit means connected to said first buffer means, for comparing said reproduction signal received from said first buffer means with said converted data stored in said second memory means during said recording mode of said device to detect data errors recorded on the magnetic tape;
said controller means correcting said data errors by sequentially enabling:
transmission of said first data from said first memory means to said digital signal processing means for conversion of said first data into said converted data conforming to said digital audio tape recorder format,
transmission of said converted data to said recording amplifier means for generation of said amplified data, and
transmission of said amplified data to said rotational head for re-recording of said amplified data onto the magnetic tape.

11 more elements

A method of recording and reproducing electrical signals onto and from a magnetic tape in a data recording and reproducing device, said method comprising the steps of:

receiving data from an external system;
storing said data in a first memory;
converting said data into a digital signal conforming to a digital audio tape recorder format;
storing said digital signal in a second memory;
amplifying said digital signal to generate an amplified digital signal, and transmitting said amplified digital signal to a rotational head for recording on the magnetic tape as recorded data;
amplifying the recorded data reproduced from the magnetic tape by said rotational head and generating a reproduction signal;
transmitting said reproduction signal to first and second buffers for storage irrespective of operating modes of said device comprised of a recording mode and a reproduction mode;
transmitting said reproduction signal from said first buffer and comparing said reproduction signal with said digital signal stored in said second memory during said recording mode to determine an existence of data recording errors;
transmitting said reproduction signal from said second buffer to said external system during said reproduction mode;
and
correcting the data recording errors recorded on said magnetic tape during said recording mode when said comparing step indicates the existence of data recording errors by sequentially:
reading said data from said first memory,
converting said data into said digital signal,
amplifying said digital signal to generate said amplified digital signal, and re-recording said amplified digital signal onto the magnetic tape.

11 more elements

A data recording and reproducing apparatus for recording and reproducing electrical signals onto and from a magnetic tape and for correcting data errors recorded on the magnetic tape, said apparatus comprising:

first memory means for storing data received from an external system;
digital signal processing means connected to said first memory means, for converting said data into a digital signal conforming to a digital audio tape recorder format;
second memory means for storing said digital signal;
recording amplification means for amplifying said digital signal to generate a first amplified signal;
recording/reproduction means for recording said first amplified signal onto the magnetic tape and generating reproduced data from the magnetic tape;
reproduction amplification means for amplifying said reproduced data to generate a second amplified signal;
data strobe means for converting said second amplified signal into a reproduction signal;
first and second buffer means commonly connected to said data strobe means for receiving said reproduction signal from said data strobe means during both a recording mode and a reproduction mode of said apparatus, said first and second buffers selectively enabling transmission of said reproduction signal based on operating modes of said apparatus comprised of said recording mode and said reproduction mode, said second buffer enabling transmission of said reproduction signal during said recording mode, said second buffer means enabling transmission of said reproduction signal to said external system during said reproduction mode;
comparing unit means for receiving said reproduction signal from said first buffer means and comparing said reproduction signal with said digital signal stored in said second memory means during said recording mode to detect data errors recorded on the magnetic tape;
and
controller means for correcting said data errors recorded on the magnetic tape when said reproduction signal and said digital signal stored in said second memory means do not correspond by sequentially enabling:
transmission of said data from said first memory means to said digital signal processing means for conversion of said data into said digital signal conforming to said digital audio tape recorder format;
amplification of said digital signal by said recording amplification means to generate said first amplified signal;
and
re-recording of said first amplified signal onto the magnetic tape by said recording/reproduction means.

12 more elements

A method of recording and reproducing electrical signals onto and from a magnetic tape in a data recording and reproducing device, said method comprising the steps of:

receiving data from an external system;
storing said data in a first memory;
transmitting said data from said first memory to a digital signal processor;
converting said data to digital data via said digital signal processor;
storing said digital data in a second memory;
recording said digital data onto the magnetic tape and thereafter reproducing said digital data from the magnetic tape;
converting said digital data into a reproduction signal;
transmitting said reproduction signal to first and second buffers for storage irrespective of operating modes of said device comprised of a recording mode and a reproduction mode;
transmitting said reproduction signal from said first buffer and making a comparison between said reproduction signal and said digital data stored in said second memory during said recording mode to detect data errors recorded on the magnetic tape;
transmitting said reproduction signal from said second buffer to said external system during said reproduction mode;
and
correcting said data errors detected on the magnetic tape during said recording mode by sequentially:
reading said data from said first memory,
converting said data into said digital data,
amplifying said digital data, and
re-recording said digital data onto said magnetic tape.

13 more elements

Dependencies are inferred from the claim text.

Facts

Application: 08/351,045Filed 28 Nov 1994 · continuation
Priority: KR 91-102022 Jan 1991
Granted: 27 Mar 2001
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

G11B 20/10009
Digital recording or reproducing: improvement or modification of read or write signals
G11B 20/1816
Error detection or correction; Testing , e.g. of drop-outs: testing
G11B 5/0086
On transverse tracks: using cyclically driven heads providing segmented tracks
G11B 2020/1062
Audio or video recording; Data buffering arrangements: data buffering arrangements, e.g. recording or playback buffers