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. 06, 2008
Filed:
Jul. 21, 2003
Tadashi Iwasaki, Kanagawa, JP;
Tadashi Iwasaki, Kanagawa, JP;
NEC Electronics Corporation, , JP;
Abstract
In a data transmission circuit according to the present invention, selection circuits alternately switch between transistors of a main buffer and transistors of a dummy buffer. In high-speed data transmission, a H/L transmission switch circuit outputs high-speed data to a constant current driver and outputs a selection signal for inputting a control signal to the main buffer to a selection circuit. In low-speed data transmission, on the other hand, the H/L transmission switch circuit outputs a selection signal for inputting a control signal to the main buffer in accordance with the low-speed data to the selection circuit. The H/L transmission switch circuit controls an input of the control signal to the main buffer in accordance with the selection signal.