Data reception unit
AssigneeOki Electric Industry Co., Ltd.
InventorsShigeru Fukunaga, Yasuko Matsumura, Toshihisa Nakai
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Abstract
A data reception unit having improved robustness against synchronization code errors. In data transmission, the synchronization code is always located in the headers of coded data contained in the package payload. Where the number of synchronization code bit errors falls below a threshold value, decoding is performed ignoring the errors. Where the number of bit errors exceeds the threshold value, the encoded data in the packet is discarded. Robustness against errors are modified through manipulation of the threshold value in response to transmission path type and error status.
Claims17
A data reception unit, comprising:
- coded data reception means for acquiring coded data from packets received from the outside;
- synchronization code extraction means for extracting leading n-bit data (where n is a natural number) from coded data acquired by said coded data reception means;
- Hamming distance computing means containing stored therein bit data representing the synchronization code for computing the Hamming distance between said leading n-bit data and the stored data representing the synchronization code;
- synchronization code decision means for deciding whether said leading n-bit data is the synchronization code by comparing said Hamming distance with a threshold value;
- and
- decoding means for performing decoding of said coded data where said synchronization code decision means has designated said leading n-bit data as the synchronization code.
Dependencies are inferred from the claim text.