Optical disk reproduction apparatus and method for controlling optical disk reproduction apparatus
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsMakoto Okazaki, Yasushi Ueda
Life of this patent
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Abstract
An optical disk reproduction apparatus comprising a microcomputer (7) for resuming reading data from an optical disk (1) when buffering to a memory (6) is interrupted, a continuous data detector (55) for dividing first data buffered in the memory (6) before the buffering interruption and second data read out in accordance with an instruction from the microcomputer (7) into “n” groups, respectively, and detecting whether the first data and the second data are in coincidence for each group, and a buffering resumption request generating circuit (56) for instructing a timing of buffering resumption on the basis of a result of the continuous data detector (55).
Claims8
A reproduction apparatus for receiving a reflected light obtained by irradiating laser light on an optical disk for reading data recorded on such optical disk, temporarily buffering the read data in a successively rewritable memory having a prescribed capacity, and then outputting the read data as reproduced data, comprising:
- control means for resuming reading data from an optical disk when buffering read data to the memory is interrupted;
- data coincidence detecting means for dividing first data buffered in the memory before the buffering interruption and second data read out by the control means into “n” groups, respectively, and detecting whether the first data and the second data are in coincidence for each group;
- and
- a buffering resumption request generating circuit for instructing a timing of buffering resumption on the basis of a result of the data coincidence detecting means.
A method for controlling a reproduction apparatus for receiving reflected light obtained by irradiating laser light on an optical disk for reading data recorded on such optical disk, temporarily buffering the read data in a successively rewritable memory having a prescribed capacity, and then outputting the read data as reproduced data, the method comprising:
- resuming reading data from an optical disk when reading data and buffering the read data to the memory is interrupted;
- dividing first data buffered in the memory before the buffering interruption and second data read out in said resuming reading into “n” groups, respectively, and detecting whether the first data and the second data are in coincidence for each group;
- and
- resuming buffering on the basis of a result of said dividing first data.
A computer-readable storage medium storing a program code for executing a method for controlling a reproduction apparatus for receiving reflected light obtained by irradiating laser light on an optical disk for reading data recorded on the optical disk, temporarily buffering the read data in a successively rewritable memory having a prescribed capacity, and then outputting the data as reproduced data, the method comprising:
- resuming reading data from an optical disk when reading data and buffering the read data to the memory is interrupted;
- dividing first data buffered in the memory before the buffering interruption and second data read out in said reading into “n” groups, respectively, and detecting whether the first data and the second data are in coincidence for each group;
- and
- resuming buffering on the basis of a result of said dividing first data.
A computer-readable storage medium storing a program code for executing a method for controlling a reproduction apparatus for receiving reflected light obtained by irradiating laser light on an optical disk for reading data recorded on the optical disk, temporarily buffering the read data in a successively rewritable memory having a prescribed capacity, and then outputting the data as reproduced data, the method comprising:
- resuming reading data from an optical disk when reading data and buffering the read data to the memory is interrupted;
- dividing first data buffered in the memory before the buffering interruption and second data read out in said resuming reading into “n” groups, respectively, and detecting whether the first data and the second data are in coincidence for each group, wherein the dividing first data further comprises:
- holding the first data and the second data, comparing the held first and second data to determine whether the data are in coincidence, and identifying coincident groups;
- obtaining a total number of the coincident groups;
- and
- obtaining a value of:
- (a prescribed decision threshold)−(the total number)/(the value of “n”);
- and
- resuming buffering when the obtained value is at most zero.
Dependencies are inferred from the claim text.