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US 7,681,964 B2Granted
Recording medium processing apparatus, printing method, and computer program
AssigneeSony Corporation
InventorsMakoto Ando, Tatsumi Ito, Koji Ashizaki, Takahiro Toyoda, Minoru Takeda, Seiji Kobayashi
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Abstract
A recording medium processing apparatus is disclosed. The recording medium processing apparatus includes: a head unit which traces a track formed on a recording surface of a recording medium and reads a data signal; a signal processing unit which detects positional information of the recording medium on the basis of the data signal; and a printing unit which prints visible information on a non-recording surface of the recording medium by referring to the positional information.
Claims6
A recording medium processing apparatus comprising:
- a head unit which traces a track formed on a recording surface of a recording medium and reads a data signal;
- a signal processing unit which detects positional information of the recording medium on the basis of the data signal;
- and
- a printing unit which prints visible information on a non-recording surface of the recording medium by referring to the positional information,
- wherein the signal processing unit includes:
- a clock generation unit which generates a reproduction clock on the basis of the data signal;
- a counter which counts the reproduction clock;
- a position detection unit which detects positional information of the recording medium from the value of the counter;
- an address detection unit which detects address information of physical sectors of the track;
- and
- a reset signal generation unit which resets the value of the counter when the address information is a predetermined value,
- wherein the head unit further includes a drive control unit which allows the head unit to track jump to an inner circumference side when the head unit reaches a predetermined jump position of the track, and
- wherein the clock generation unit detects the period of a synchronization signal and maintains the generation of the reproduction clock generated up to that time in a period when the synchronization signal is determined to be abnormal.
10 more elements
A printing method comprising the steps of:
- at a head unit, tracing a track formed on a recording surface of a recording medium and reading a data signal;
- generating a reproduction clock on the basis of the data signal;
- counting the reproduction clock;
- detecting address information of physical sectors of the track;
- allowing the head unit to track jump to an inner circumference side when the head unit reaches a predetermined jump position;
- resetting the count value when the address information is a predetermined value;
- detecting positional information of the recording medium from the value of the counter;
- detecting the period of a synchronization signal and maintains the generation of the reproduction clock generated up to that time in a period when the synchronization signal is determined to be abnormal;
- and
- printing visible information on a non-recording surface of the recording medium on the basis of the positional information.
7 more elements
A recording medium processing apparatus comprising:
- a head unit which traces a track formed on a recording surface of a recording medium and reads a data signal;
- a clock generation unit which generates a reproduction clock on the basis of the data signal;
- a counter which counts the reproduction clock;
- an address information detection unit which detects address information of physical sectors of the track;
- a drive control unit which allows the head unit to track jump to an inner circumference side when the head unit reaches a predetermined jump position;
- a reset signal generation unit which generates the reset signal which resets the count value when the address information is a predetermined value;
- a position detection unit which detects positional information of the recording medium from the value of the counter;
- and
- a printing unit which prints visible information on a non-recording surface of the recording medium on the basis of the positional information,
- wherein the clock generation unit detects the period of a synchronization signal and maintains the generation of the reproduction clock generated up to that time in a period when the synchronization signal is determined to be abnormal.
7 more elements
Dependencies are inferred from the claim text.