Invention Grant
- Patent Title: Method for generating a PWM signal
- Patent Title (中): 用于产生PWM信号的方法
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Application No.: US12777497Application Date: 2010-05-11
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Publication No.: US08143964B2Publication Date: 2012-03-27
- Inventor: Kesatoshi Takeuchi
- Applicant: Kesatoshi Takeuchi
- Applicant Address: JP
- Assignee: Seiko Epson Corporation
- Current Assignee: Seiko Epson Corporation
- Current Assignee Address: JP
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: JP2007-289222 20071107
- Main IPC: G05B11/28
- IPC: G05B11/28 ; H03K7/08
Abstract:
The PWM control circuit is provided. The PWM control circuit includes: a PWM control signal generator that generates a PWM period signal defining a period of a PWM signal and a PWM resolution signal specifying a resolution in one period of the PWM period signal; and a PWM unit that generates the PWM signal based on the PWM period signal and the PWM resolution signal, wherein the PWM control signal generator changes a frequency of the PWM resolution signal while keeping a frequency of the PWM period signal unchanged.
Public/Granted literature
- US20100219899A1 PWM CONTROL CIRCUIT AND MOTOR EQUIPPED WITH THE SAME Public/Granted day:2010-09-02
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