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:
Jan. 13, 1998
Filed:
May. 31, 1995
Masakiyo Horie, Toyohashi, JP;
Takuya Harada, Okazaki, JP;
Nippondenso Co., Ltd., Aichi-pref, JP;
Abstract
In a frequency-to-voltage converting circuit, a clamping frequency is maintained constant without being adversely influenced by circuit constants, and temperature characteristics. The frequency-to-voltage converting apparatus has voltage converting means for converting a frequency of an input pulse signal into a voltage, arranged by frequency judging means for judging whether or not the frequency of the input pulse signal reaches a predetermined clamping frequency. Setting pulse signal generating means outputs a setting pulse signal having the clamping frequency, and means for causing the voltage converting means to convert the frequency of the input pulse signal into the voltage when the frequency of the input pulse signal does not reach the clamping frequency based on a judgement result of the frequency judging means. The voltage converting means is caused to convert the clamping frequency of the setting pulse signal derived from the setting pulse signal generating means when the frequency of the input pulse signal reaches the clamping frequency.