G - Physics – 11 – B
Patent
G - Physics
11
B
352/32.1, 352/33
G11B 7/00 (2006.01) G11B 20/14 (2006.01) H04L 25/49 (2006.01)
Patent
CA 1183262
59 ABSTRACT: A system for transmitting digital information including a coding arrangement, a transfer medium, for example a record carrier, and a decoding arrangement. In the coding arrangement the digital information is received as groups of input words which are encoded to form code words, each code word corresponding to an in- put word. Each code word has a length of time equal to s ?o and each is assembled from M subgroups Gm of I signal positions tmi located at equidistant time inter- vals ?, where m is a number from 1 to M, inclusive, corresponding to a subgroup Gm and i is a number within each subgroup Gm from 1 to I inclusive. In each sub- group Gm, k, where , is an integer smaller than I(1?k?I - 1), of these signal positions tmi are always occupied by a signal which is distinguishable form the signal in unoccupied positions. The first posi- tions of the subgroups Gm being located at mutually different time intervals .epsilon.m from the beginning of the code word, where o ? .epsilon.m?? with the restrictions M ? 2 and .epsilon.m + (I - 1)?? s?? and the group of code words for which it holds that M = 2, I = s = 2, k = 1, ? =?o and .epsilon.2 = .epsilon.1 + ?? being excepted. The des- cribed system is suitable for recording and/or repro- ducing digital information onto or from a disc-like record carrier.
389483
Carasso Marino G.
Huijser Arie
Verboom Johannes J.
Koninklijke Philips Electronics N.v.
Van Steinburg C.e.
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