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:
Jun. 13, 2006
Filed:
Jul. 09, 2004
Katsuya Nakashima, Nagasaki, JP;
Katsuya Nakashima, Nagasaki, JP;
Sony Corporation, , JP;
Abstract
According to the present invention, an input buffer circuit comprises a first and a second buffer circuits operated at different first and second drive voltages and connected in turn, and an output potential control circuit is provided for carrying out a control so that, in spite of a voltage value of the first drive voltage, a threshold of an output potential of the first buffer circuit becomes a threshold of an input potential of the second buffer circuit. Further, the output potential control circuit is configured such that the first buffer circuit is constituted by a pair of complementary current mirror amplifiers, and comprises feedback control means for carrying out feedback-control to the generation of the output potential for the first buffer circuit on the basis of an output potential on a reference side of this current mirror amplifier.