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:
Apr. 28, 1998
Filed:
Sep. 01, 1995
Seiichi Yasukawa, Yotsukaido, JP;
Nikon Corporation, Tokyo, JP;
Abstract
A data communication device adapted to notify abnormal transmission timing at the start of transmission. A receiving register, synchronized with synchronous signal, receives input data via an upper transmission path from a facing instrument. The receiving register performs a serial-parallel conversion on the input data. A receiving control unit detects the completion of the serial-parallel conversion and restores transmitted data, delivered on the upper transmission path from the facing equipment, by sequentially combining the serial-parallel converted input data. A transmitting register receives transmission data of predetermined word length and parallel-serial converts the transmission data in synchronization with the synchronous signal. The transmitting register delivers the parallel-serial converted output data to a lower transmission path. A transmission control unit generates plural data formed by dividing, at intervals based on the predetermined word length, the transmission data. The transmission control unit sequentially provides the plural data to the transmission register when the completion of the parallel-serial conversion is detected. A transmission state monitoring unit which determines whether delivery of the transmission data has been completed when a predetermined time difference has elapsed from when the serial-parallel conversion is completed, and outputs this result as transmission state data.