EP0289004A2 — Recording and reproducing apparatus

Claim 1

Independent Claim 124 words

A recording and reproducing apparatus which comprises a recording condition control means(2) for controlling recording conditions during recording of a binary-coded original recording signal on a recording medium (Ds), a signal recording means (51) for recording the original recording signal onto said recording medium according to recording conditions set by said recording condition control means, a reproducing signal output means (5,6,7) for outputting binary-codedreproducing signal by detecting the recording signal as recorded on the recording medium by said signal recording means, and a recording condition setting means (3) for obtaining the recording conditions to provide a reproducing signal approximately equal to the original recording signal through comparison between the reproducing signal outputted from said reproducing signal output means (5,6,7) and said original recording signal.

Claim 2

Dependent Claim 124 words

A recording and reproducing apparatus which comprises a recording condition control means(2) for controlling recording conditions during recording of a binary-coded original recording signal on a recording medium (Ds), a signal recording means (51) for recording the original recording signal onto said recording medium according to recording conditions set by said recording condition control means, a reproducing signal output means (5,6,7) for outputting binary-codedreproducing signal by detecting the recording signal as recorded on the recording medium by said signal recording means, and a recording condition setting means (3) for obtaining the recording conditions to provide a reproducing signal approximately equal to the original recording signal through comparison between the reproducing signal outputted from said reproducing signal output means (5,6,7) and said original recording signal.

Claim 3

Dependent Claim 32 words

A recording and reproducing apparatus as claimed in Claim 1, wherein said recording condition control means is a pulse length control means for varying a pulse length of the original recording signal.

Claim 4

Dependent Claim 33 words

A recording and reproducing apparatus as claimed in claim 1, wherein said recording condition control means is a light beam power control means for varying power of the light beam during the recording.

Claim 5

Dependent Claim 196 words

A recording and reproducing apparatus which comprises a recording pulse length control means (3) capable of arbitrarily varying the recording pulse length of a recording laser light beam generating means (4, 51) capable of arbitrarily varying the recording laser light beam power, and means (9) for counting length per predetermined time or per predetermined number of bits, of the bits at the recorded side or unrecorded side for a reproducing signal or recording/reproducing signals, said recording and reproducing apparatus having a recording condition self-diagnosing function, whereby recording is effected while successively varying the recording pulse length or recording laser light beam power through employment of said recording pulse length control means (3) or said recording laser light beam generating means, thereby setting conforming recording pulse length or recording laser beam power based on result of counting of said counting means (9), said counting means being caused to function only when it is performing the recording by an instruction from an ordinary host control device, and/or reproduction checking so that said self-diagnosing function is effected in the case where the result of the counting is out of a predetermined range with respect to a predetermined reference value.

Claim 6

Dependent Claim 196 words

A recording and reproducing apparatus which comprises a recording pulse length control means (3) capable of arbitrarily varying the recording pulse length of a recording laser light beam generating means (4, 51) capable of arbitrarily varying the recording laser light beam power, and means (9) for counting length per predetermined time or per predetermined number of bits, of the bits at the recorded side or unrecorded side for a reproducing signal or recording/reproducing signals, said recording and reproducing apparatus having a recording condition self-diagnosing function, whereby recording is effected while successively varying the recording pulse length or recording laser light beam power through employment of said recording pulse length control means (3) or said recording laser light beam generating means, thereby setting conforming recording pulse length or recording laser beam power based on result of counting of said counting means (9), said counting means being caused to function only when it is performing the recording by an instruction from an ordinary host control device, and/or reproduction checking so that said self-diagnosing function is effected in the case where the result of the counting is out of a predetermined range with respect to a predetermined reference value.

Claim 7

Dependent Claim 85 words

A recording and reproducing apparatus as claimed in Claim 4, wherein comparison is made between the reference value as a result of operation of the counting means during the recording function by the instruction from the ordinary host control device or the predetermined reference value, and the result obtained upon operation of said counting means during the reproduction checking after the ordinary recording so as to effect correction of said recording pulse length or recording laser beam power based on the result of the comparison.

Claim 8

Dependent Claim 81 words

A recording and reproducing apparatus as claimed in Claim 4, wherein when a difference of the results of the counting for the ordinary recording and reproducing checking is within the predetermined range, said correction of the recording pulse length or recording laser beam power is effected, and when said difference of the results of the counting is out of the predetermined range, said recording condition self-diagnosing function is effected for setting of the recording pulse length or recording laser beam power.

Claim 9

Dependent Claim 81 words

A recording and reproducing apparatus as claimed in Claim 5, wherein when a difference of the results of the counting for the ordinary recording and reproducing checking is within the predetermined range, said correction of the recording pulse length or recording laser beam power is effected, and when said difference of the results of the counting is out of the predetermined range, said recording condition self-diagnosing function is effected for setting of the recording pulse length or recording laser beam power.

Claim 10

Dependent Claim 51 words

A recording and reproducing apparatus as claimed in Claim 4, wherein after effecting said recording condition self-diagnosing function when said difference of the counting results is out of the predetermined range, recording is again effected with respect to data in the recording region judged to be out of said predetermined range.

Claim 11

Dependent Claim 51 words

A recording and reproducing apparatus as claimed in Claim 7, wherein after effecting said recording condition self-diagnosing function when said difference of the counting results is out of the predetermined range, recording is again effected with respect to data in the recording region judged to be out of said predetermined range.

Claim 12

Dependent Claim 64 words

An optical information recording and reproducing apparatus which comprises a light source of laser beam and the like for forming marks in a plurality of kind of lengths on a recording medium so as to record information data thereon, and a recording correcting means for effecting different corrections for the marks of the respective lengths during formation of said marks on said recording medium.

Claim 13

Dependent Claim 64 words

An optical information recording and reproducing apparatus which comprises a light source of laser beam and the like for forming marks in a plurality of kind of lengths on a recording medium so as to record information data thereon, and a recording correcting means for effecting different corrections for the marks of the respective lengths during formation of said marks on said recording medium.

Claim 14

Dependent Claim 175 words

An optical disc apparatus which comprises a pick-up driving means for controlling irradiating position of a laser light beam onto an optical disc,a memory means for storing an optimum condition table in which the optimum value of the recording laser beam light power with respect to parameters affecting recording quality are adapted to correspond to the optimum value of the recording pulse length, a measuring means for measuring the values for said recording laser beam light power, recording pulse length and parameters, a deviation detecting means for detecting deviation between the optimum values of the recording laser light beam power and of the recording pulse length to be determined by said optimum condition table based on the values of the parameters as measured by said measuring means and the recording laser light beam power and the recording pulse length measured by said measuring means, and a laser control means for controlling the recording laser light beam power and recording pulse length so as to eliminate said deviation based on signal from said deviation detecting means.

Claim 15

Dependent Claim 175 words

An optical disc apparatus which comprises a pick-up driving means for controlling irradiating position of a laser light beam onto an optical disc,a memory means for storing an optimum condition table in which the optimum value of the recording laser beam light power with respect to parameters affecting recording quality are adapted to correspond to the optimum value of the recording pulse length, a measuring means for measuring the values for said recording laser beam light power, recording pulse length and parameters, a deviation detecting means for detecting deviation between the optimum values of the recording laser light beam power and of the recording pulse length to be determined by said optimum condition table based on the values of the parameters as measured by said measuring means and the recording laser light beam power and the recording pulse length measured by said measuring means, and a laser control means for controlling the recording laser light beam power and recording pulse length so as to eliminate said deviation based on signal from said deviation detecting means.

Claim 16

Dependent Claim 45 words

An optical disc apparatus as claimed in Claim 11, wherein said pick-up driving means, said measuring means and said laser light control means are respectively arranged to function per each predetermined period of time during replacing and further during ordinary case of the optical disc.

Claim 17

Dependent Claim 44 words

An optical disc apparatus as claimed in Claim 11, wherein during functioning of said measuring means, and laser light control means, the laser light beam is adapted to irradiate tracks of the optical disc other than a user area by said pick-up driving means.

Claim 18

Dependent Claim 44 words

An optical disc apparatus as claimed in Claim 12, wherein during functioning of said measuring means, and laser light control means, the laser light beam is adapted to irradiate tracks of the optical disc other than a user area by said pick-up driving means.

Claim 19

Dependent Claim 51 words

An optical disc apparatus as claimed in Claim 11, wherein the optimum condition table stored by said memory means includes at least one of a comparison table of ambient temperatures and optimum recording laser light beam power, and another comparison table of disc radial positions and the optimum recording pulse length.

Claim 20

Dependent Claim 51 words

An optical disc apparatus as claimed in Claim 12, wherein the optimum condition table stored by said memory means includes at least one of a comparison table of ambient temperatures and optimum recording laser light beam power, and another comparison table of disc radial positions and the optimum recording pulse length.

Claim 21

Dependent Claim 51 words

An optical disc apparatus as claimed in Claim 13, wherein the optimum condition table stored by said memory means includes at least one of a comparison table of ambient temperatures and optimum recording laser light beam power, and another comparison table of disc radial positions and the optimum recording pulse length.

Recording and reproducing apparatus

Abstract

Inventors

Bibliographic Details

Claims Analysis

References Cited (Backward Citations)

USPTO Annuity & Maintenance Windows

Assigned Categories & Tags

Assign Category Tag