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:
Jul. 12, 1994
Filed:
Sep. 03, 1991
Kazuhiro Suzuki, Sendai, JP;
Eiji Suzuki, Ohtawara, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A digital data radio transmission system for reproducing pre-velocity-modulation input frame data from the radio frame data subjected to velocity modulation and pulse insertion. The system includes a write counter that divides write clock pulses under control of frame position pulses to output write pulses; an elastic memory that temporarily stores the input frame data and the frame position pulses as per the write pulses; and a timing pulse generator that outputs control pulses in response to the supply of read clock pulses under control of the frame position pulses from the elastic memory. The system further comprises a read counter that divides the write clock pulses by the same number as with the division by the write counter to output read pulses; and a pulse inserting section that inserts pulses into the output frame data read from the elastic memory as per the read pulses to generate the radio frame data. Because the control operations involved are performed in accordance with the frame position pulses, the input frame data matches the radio frame data in terms of frame phase.