Variable transfer rate data reproduction apparatus
First Claim
1. A data reproduction apparatus comprising:
- data reproducing means for reproducing data, which is recorded on a recording medium at a variable transfer rate, at intermittent cycles and providing a signal indicative thereof;
data storage means, responsive to the signal from said data reproducing means, for storing therein the data reproduced by said data reproducing means;
decoding means for decoding the data reproduced by said data reproducing means to provide a reproduction signal in sequence;
reproduction controlling means for controlling operations of said data storage means and said decoding means, said reproduction controlling means transferring the reproduced data stored in said data storage means to said decoding means so as to allow said decoding means to provide the reproduction signal in sequence; and
data control signal outputting means for controlling output of the stored data from said data storage means and for outputting a data control signal to said data storage means;
wherein said reproduction control means selectively provides a reproduction enable signal and a reproduction inhibit signal to said data reproducing means according to the amount of the reproduced data stored in said data storage means to perform a data reproduction operation of said data reproducing means at the intermittent cycles, said data reproducing means having a reproduction element, said data reproducing means being responsive to the reproduction enable signal to have the reproduction element trace a data-recorded track provided on the recording medium to read recorded data therefrom and also responsive to the reproduction inhibit signal to stop the data reproduction operation thereof while allowing the reproduction element to trace a following portion of the data record track, when said reproduction control means provides the reproduction enable signal after providing the reproduction inhibit signal, said reproduction control means moving the reproduction element to a portion of the data record track immediately before a portion where the data reproduction operation has been stopped in response to the reproduction inhibit signal.
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Accused Products
Abstract
A variable transfer rate data reproduction system is provided which performs a reproduction operation and a reproduction inhibit operation cyclically to reproduce data recorded on a recording disc. A pickup traces a spiral track formed on the recording disc during the reproduction operation and is also controlled to continue to trace a following portion of the track over a plurality of track turns during the reproduction inhibit operation without a track jump. Upon resumption of the reproduction operation, the pickup jumps over the plurality of tracks to return back to a portion of the track where the reproduction operation has been Interrupted previously. This results in decreased mechanical stress acting on mechanical parts for moving the pickup.
250 Citations
8 Claims
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1. A data reproduction apparatus comprising:
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data reproducing means for reproducing data, which is recorded on a recording medium at a variable transfer rate, at intermittent cycles and providing a signal indicative thereof; data storage means, responsive to the signal from said data reproducing means, for storing therein the data reproduced by said data reproducing means; decoding means for decoding the data reproduced by said data reproducing means to provide a reproduction signal in sequence; reproduction controlling means for controlling operations of said data storage means and said decoding means, said reproduction controlling means transferring the reproduced data stored in said data storage means to said decoding means so as to allow said decoding means to provide the reproduction signal in sequence; and data control signal outputting means for controlling output of the stored data from said data storage means and for outputting a data control signal to said data storage means; wherein said reproduction control means selectively provides a reproduction enable signal and a reproduction inhibit signal to said data reproducing means according to the amount of the reproduced data stored in said data storage means to perform a data reproduction operation of said data reproducing means at the intermittent cycles, said data reproducing means having a reproduction element, said data reproducing means being responsive to the reproduction enable signal to have the reproduction element trace a data-recorded track provided on the recording medium to read recorded data therefrom and also responsive to the reproduction inhibit signal to stop the data reproduction operation thereof while allowing the reproduction element to trace a following portion of the data record track, when said reproduction control means provides the reproduction enable signal after providing the reproduction inhibit signal, said reproduction control means moving the reproduction element to a portion of the data record track immediately before a portion where the data reproduction operation has been stopped in response to the reproduction inhibit signal. - View Dependent Claims (2)
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3. A data reproduction apparatus comprising:
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data reproducing means for reproducing data, which is recorded on a recording medium at a variable transfer rate, at intermittent cycles and providing a signal indicative thereof; data storage means, responsive to the signal from said data reproducing means, for storing therein the data reproduced by said data reproducing means; decoding means receiving from said data storage means the data stored therein for decoding the data reproduced by said data reproducing means to provide a reproduction signal in sequence; reproduction controlling means for controlling operations of said data storage means and said decoding means, said reproduction controlling means transferring the reproduced data stored in said data storage means to said decoding means so as to allow said decoding means to provide the reproduction signal in sequence; and data control means for controlling an amount of stored data read out from said data storage means and for outputting a data control signal to said data storage means to control the amount of stored data read out therefrom; wherein said reproduction control means selectively provides a reproduction enable signal and a reproduction inhibit signal to said data reproducing means according to the amount of the reproduced data stored in said data storage means to perform a data reproduction operation of said data reproducing means at the intermittent cycles, said data reproducing means having a reproduction element, said data reproducing means being responsive to the reproduction enable signal to have the reproduction element trace a data-recorded track provided on the recording medium to read recorded data therefrom and also responsive to the reproduction inhibit signal to stop the data reproduction operation thereof while allowing the reproduction element to trace a following portion of the data record track, when said reproduction control means provides the reproduction enable signal after providing the reproduction inhibit signal, said reproduction control means moving the reproduction element to a portion of the data record track immediately before a portion where the data reproduction operation has been stopped in response to the reproduction inhibit signal. - View Dependent Claims (4)
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5. A data reproduction apparatus comprising:
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data reproducing means for reproducing data, which is recorded on a recording medium at a variable transfer rate, at intermittent cycles and providing a signal indicative thereof; data storage means, responsive to the signal from said data reproducing means, for storing therein the data reproduced by said data reproducing means; decoding means for decoding the data reproduced by said data reproducing means to provide a reproduction signal in sequence; reproduction controlling means for controlling operations of said data storage means and said decoding means, said reproduction controlling means transferring the reproduced data stored in said data storage means to said decoding means so as to allow said decoding means to provide the reproduction signal in sequence; and data control signal outputting means for controlling output of the stored data from said data storage means and for outputting a data control signal to said data storage means; wherein said reproduction controlling means controls a data reproduction operation of said data reproducing means so as to hold an amount of the reproduced data stored in said data storage means within a given range required for said decoding means to decode the reproduced data continuously; and wherein said reproduction control means selectively provides a reproduction enable signal and a reproduction inhibit signal to said data reproducing means according to the amount of the reproduced data stored in said data storage means to perform a data reproduction operation of said data reproducing means at the intermittent cycles so as to hold the amount of the reproduced data stored in said data storage means within the given range, said data reproducing means having a reproduction element tracing a spiral data-recorded track formed on the recording medium, said data reproducing means being responsive to the reproduction enable signal to have the reproduction element trace the data-recorded track from a first portion to a second portion and being responsive to the reproduction inhibit signal to stop the data reproduction operation thereof while allowing the reproduction element to trace a portion of the data-recorded track following the second portion, when said data reproducing means receives the reproduction enable signal following input of the reproduction inhibit signal, said reproduction control means displaces the reproduction element to a portion immediately before the second portion of the data-recorded track to resume the data reproduction operation. - View Dependent Claims (6)
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7. A data reproduction apparatus comprising:
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data reproducing means for reproducing data, which is recorded on a recording medium at a variable transfer rate, at intermittent cycles and providing a signal indicative thereof; data storage means, responsive to the signal from said data reproducing means, for storing therein the data reproduced by said data reproducing means; decoding means receiving from said data storage means the data stored therein for decoding the data reproduced by said data reproducing means to provide a reproduction signal in sequence; reproduction controlling means for controlling operations of said data storage means and said decoding means, said reproduction controlling means transferring the reproduced data stored in said data storage means to said decoding means so as to allow said decoding means to provide the reproduction signal in sequence; and data control means for controlling an amount of stored data read out from said data storage means and for outputting a data control signal to said data storage means to control the amount of stored data read out therefrom; wherein said reproduction controlling means controls a data reproduction operation of said data reproducing means so as to hold an amount of the reproduced data stored in said data storage means within a given range required for said decoding means to decode the reproduced data continuously; and wherein said reproduction control means selectively provides a reproduction enable signal and a reproduction inhibit signal to said data reproducing means according to the amount of the reproduced data stored in said data storage means to perform a data reproduction operation of said data reproducing means at the intermittent cycles so as to hold the amount of the reproduced data stored in said data storage means within the given range, said data reproducing means having a reproduction element tracing a spiral data-recorded track formed on the recording medium, said data reproducing means being responsive to the reproduction enable signal to have the reproduction element trace the data-recorded track from a first portion to a second portion and being responsive to the reproduction inhibit signal to stop the data reproduction operation thereof while allowing the reproduction element to trace a portion of the data-recorded track following the second portion, when said data reproducing means receives the reproduction enable signal following input of the reproduction inhibit signal, said reproduction control means displaces the reproduction element to a portion immediately before the second portion of the data-recorded track to resume the data reproduction operation. - View Dependent Claims (8)
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Specification