Information recording apparatus for writable recording media
AssigneePioneer Electronic Corporation
InventorKazuo Kuroda
Life of this patent
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Abstract
An information recording apparatus capable of smoothly reproducing in succession written data and data additionally written subsequent to the written data on a recording medium without disturbing a synchronization operation for read data during reproduction of information. The apparatus comprises a writing clock generating circuit for generating a writing clock signal for writing the new data into a recording medium while establishing synchronization with new data; a clock reproducing circuit for reading the written data from the recording medium, and reproducing a synchronization clock signal of the written data to generate a reproduced clock signal; and a phase adjusting circuit for synchronizing the phase of the writing clock signal with the phase of the reproduced clock signal.
Claims9
An information recording apparatus capable of recording new data subsequent to previously written data on a recording medium, comprising:
- a writing clock generator for generating a writing clock signal having a frequency and a phase for writing the new data into said recording medium while establishing synchronization with the new data;
- a clock reproducing component for reading said written data from said recording medium, and reproducing a synchronization clock signal of said written data to generate a reproduced clock signal;
- and
- a phase adjuster for synchronizing said writing clock signal in phase with said reproduced clock signal, and subsequently gradually returning frequency and phase of said writing clock signal to a first frequency and a first phase inherent to said writing clock generator with a predetermined time constant.
An information recording method capable of recording new data subsequent to previously written data on a recording medium, comprising:
- reading said written data from said recording medium, and reproducing a synchronization clock signal of said written data to generate a reproduced clock signal;
- generating, via a writing clock generator, a writing clock signal having a frequency and a phase for writing the new data into said recording medium while establishing synchronization with the new data;
- and
- synchronizing said writing clock signal in phase with said reproduced clock signal, and subsequently gradually returning frequency and phase of said writing clock signal to a first frequency and a first phase inherent to said writing clock generator with a predetermined time constant.
An information recording apparatus capable of recording new data subsequent to previously written data on a recording medium, comprising:
- a clock reproducing generator for reading said written data from said recording medium and generating a synchronization clock signal for said written data;
- a writing clock generator for generating a writing clock signal having a frequency and a phase for writing the new data into said recording medium, wherein said writing clock signal has a first frequency and a first phase based on a time constant;
- and
- a phase adjuster for generating a reproduced clock signal based on said synchronization clock signal, approximately synchronizing said writing clock signal with said reproduced clock signal, and subsequently adjusting the frequency and the phase of said writing clock signal to approximately the first frequency and approximately the first phase.
Dependencies are inferred from the claim text.