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:
Nov. 16, 1976
Filed:
Nov. 17, 1975
Yasoji Suzuki, Ayase, JA;
Kenshi Manabe, Yokohama, JA;
Teruaki Tanaka, Yokohama, JA;
Tomohisa Shigematsu, Yokohama, JA;
Tokyo Shibaura Electric Co., Ltd., Kawasaki, JA;
Abstract
An n scale counter includes a shift register having X number of unit delay circuits connected in series and each consisting of a plurality of insulated gate field effect transistors. The unit delay circuits of the shift register are simultaneously supplied with pulses to be counted and each of the delay cicuits is set or reset to an initial state. There is also provided a closed loop circuit including a first gate circuit connected to receive an output signal from the last stage delay circuit as one input terminal, and a logic circuit connected to receive output signals from the first gate circuit and, for example, the first stage delay circuit and produce to the input terminal of the first stage delay circuit an output signal indicating coincidence or incoincidence of its input signals. The counter is capable of counting pulses of (2.sup.x -1) at maximum. A second gate circuit is provided to apply its output signal to the other input terminal of the first gate circuit and output signals of a predetermined combination from the unit delay circuits are supplied to the second gate circuit so that the counter can function as a counter with a counting capacity smaller than that of (2.sup.x -1).