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:
Apr. 05, 1988
Filed:
Nov. 24, 1986
Helmut Fischer, Munich, DE;
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Abstract
The circuit arrangement generates square-wave signals whose recurrence frequency coincides with the recurrence frequency of input signals supplied to it and whose duty cycle is constant, irrespective of the recurrence frequency. The circuit arrangement contains a flip-flop set by each input signal and reset by reset signals. The square-wave signals are emitted at the output of the flip-flop. A first integrator circuit of relatively great time constant is discharged or charged when the flip-flop is set or reset, respectively. Another integrator circuit is charged whenever the flip-flop is set. The instantaneous voltages at outputs of integrator circuits are compared with each other, and when they are the same the comparator generates the reset signal. In addition, the second integrator circuit is discharged, and renewed charging is prevented as long as the flip-flop is reset.