| 摘要 |
FIELD: electricity.SUBSTANCE: pseudorandom code scale includes an information track made in form of gradations of a pseudorandom binary sequence with maximum period length M=2-1, n information reading elements, arranged along the information track with angular spacing which is a multiple of the value of the quantum of the scale ?=360°/M, with the possibility of obtaining therefrom M different n-bit code combinations, k correcting reading elements, arranged along the information track with possibility of obtaining therefrom, along with n information reading elements, M different (n+k)-bit code combinations which represent a Hamming code with detection and correction of a single error, a control reading element arranged along the information track with possibility of obtaining therefrom, along with (n+k) reading elements, M different (n+k+1)-bit code combinations which represent a Hamming code with correction of a single error and detection of a double error, outputs of n information reading elements.EFFECT: high information reliability of the pseudorandom code scale owing to generation therefrom of correcting codes with correction of single errors and detection of double errors.1 dwg, 7 tbl |
