The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 02, 1998
Filed:
Jul. 25, 1996
Werner Scholz, Gehrden, DE;
Deutsche Thomson-Brandt GmbH, Villingen-Schwennigen, DE;
Abstract
Low-redundancy codes are increasingly being striven for, such codes thus inevitably requiring comparatively long code words. However, since the memory requirement for coding tables increases considerably with the length of the code words, the use of code tables is then no longer expedient. Instead, coding is then effected by selecting the optimum code word in each case from a plurality of different code words taking account of coding; prescriptions and spectral decisions. For this purpose, the maximum run length for each code word is also determined, inter alia, but the spectral decisions are decisive as long as the maximum run length does not exceed a predetermined maximum value. Provided that the end of one code word and the beginning of a succeeding code word have the same binary value, incorrect decisions in the selection of the optimum code word may arise in the region where the synchronizing pattern is keyed in. According to the invention, therefore, the bit pattern (16) serving for synchronization is changed (17) prior to the determination of the code word which is optimum for generating the signal.