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:
Oct. 22, 1996
Filed:
Sep. 26, 1995
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Mitsubishi Electric Semiconductor Software Co., Ltd., Itami, JP;
Abstract
A buffer circuit with driving current adjusting function is provided which may automatically set a driving current characteristics of a buffer to the most suitable value according to a system where the driving current is to be applied. A buffer circuit with driving current adjusting function of the present invention comprises a buffer circuit which is controlled by a control signal for supplying a most appropriate driving current to a load; a load detecting circuit for detecting a phase difference between an input signal and an output signal of the buffer circuit and for outputting voltage corresponding to the phase difference, a control signal generating circuit for generating a signal which controls the driving current of the buffer circuit in response to an output signal of the load detecting circuit, the control signal controls so that the driving current of buffer circuit is increased when delay time of buffer circuit becomes long and the driving current of buffer circuit is decreased when delay time becomes short.