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. 05, 2006
Filed:
Sep. 14, 2004
Kazuhito Tsuchida, Kanagawa, JP;
Kimitaka Benise, Kanagawa, JP;
Kazuhito Tsuchida, Kanagawa, JP;
Kimitaka Benise, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A hysteresis detection method has two reference voltages Vref, Vrefrelative to an input voltage Vin. It is determined whether the input voltage Vin becomes higher than or lower than the reference voltages Vref, Vref, and a judged result is outputted. In the initial stage in which the detection is started, regardless of the magnitude of the input voltage Vin, the reference voltage is fixed to any one of the reference voltages Vref, Vref. There are provided a hysteresis detecting method and a hysteresis detecting circuit in which, in the hysteresis detection having two reference voltages and which determines whether the input voltage is higher than or lower than the two reference voltages, one of the reference voltages can be judged and the judged result can be outputted regardless of the magnitude of the input voltage in the initial state in which the reference voltage is stabilized from the time in which the circuit is actuated. Also, there is provided a mobile device using this hysteresis detecting circuit.