G - Physics – 06 – F
Patent
G - Physics
06
F
354/224, 350/34
G06F 11/00 (2006.01) H03M 13/43 (2006.01) H04N 7/035 (2006.01)
Patent
CA 1234222
ABSTRACT A technique is disclosed for correcting cyclic code data stored in a memory. The data to be corrected is stored in a first area of the memory as a data packet. The data packet has a data field and an error correction field which are comprised of a predetermined number of bits. A timing generating means successively generates first and second timing signals with a predetermined time delay. At the first timing signal, the data to be cor- rected is read out of the first area of the memory and transmitted along a first line of a switching means. With respect to this data, error syndrome calculation is performed by an error syndrome calculating means. Based on the result of this calculation, the error detecting means detects whether an error is included in data to be corrected, and outputs correction data. Using this cor- rection data, the correction means corrects the data to be corrected, which is read, once again, out of the first area of the memory and is transmitted along a second line of the switching means at the second timing signal which is generated in synchronism with the end of error detec- tion. The corrected data is written in a second area of the memory in accordance with a third timing signal.
491303
Kabushiki Kaisha Toshiba
Ridout & Maybee Llp
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