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:
May. 25, 1976
Filed:
May. 05, 1975
Michael J Kelly, Melrose Park, IL (US);
Satyan G Pitroda, Villa Park, IL (US);
GTE Automatic Electric Laboratories Incorporated, Northlake, IL (US);
Abstract
A digital line synchronizer system for use with a digital PCM TDM switching exchange will provide a vector address off-set between the address locations of WRITE and READ vectors within a multiple frame input buffer memory bank of the incoming line equipment upon the occurrence of either a loss of receive framing synchronization or the equalization of time reference between the WRITE and READ vectors with respect to the input buffer memory bank. The vector address off-set is provided to prevent the condition of information distortion due to the phenomenon of vector slippage whereby a given channel/word slot within the multiple frame memory bank is twice written with incoming PCM data under the operation of the WRITE vector address before the first stored sample of PCM data can be retrieved via the use of the READ vector address.