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:
Sep. 15, 1992
Filed:
Feb. 26, 1991
Hiroshi Kuranaga, Hyogo, JP;
Kouji Gotou, Hyogo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A transmitter/receiver applicable as an interface circuit in ISDN terminals is disclosed. In externally designated total phase deviation measurement mode, the delay time caused by a receiver circuit and a driver circuit, i.e. a phase difference, is predetected by a phase comparator. The detected phase difference signal is stored in a phase control circuit, and the phase control circuit controls the pahse of a periodical timing signal generated from a PLL circuit. Therefore, as a data buffer applies a transmitting data to the driver circuit 7 in response to the phase control timing signal, the phase difference of the transmitting data signal generated from the driver circuit relative to the received data signal is made to be the minimum.