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:
Sep. 24, 1991
Filed:
Oct. 30, 1989
Haruko Kawahigashi, Kanagawa, JP;
Shuji Ito, Kanagawa, JP;
Takane Kakuno, Kanagawa, JP;
Sakae Nakano, Kanagawa, JP;
Mikio Yoshioka, Kanagawa, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
The present invention provides a transmission line encoding/decoding system wherein encoding is effected in such a manner that an overhead bit which indicates whether or not a slot, all the bits of which are '0' bits (hereinafter referred to as an all-'0' slot), is present among a plurality of slots constituting in combination one block and is set in a predetermined slot in the block, and if there are all-'0' slots, a slot information bit which indicates the slot position of at least one all-'0' slot is set and at least one all-'0' slot the position of which is indicated by the slot information bit is deleted, and wherein decoding is effected in such a manner that whether or not an all-'0' slot was present in one block before the encoding process is judged on the basis of an overhead bit set at a predetermined position in the block of the received data, and if it is judged that there was an all-'0' slot, the slot information bit indicating the slot position of the all-'0' slot that has been set in the received block is removed and an all-'0' slot is reconstructed at the position indicated by the slot information bit.