Invention Grant
- Patent Title: Divider circuit
- Patent Title (中): 分频电路
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Application No.: US13078219Application Date: 2011-04-01
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Publication No.: US08278974B2Publication Date: 2012-10-02
- Inventor: Kei Takahashi , Yoshiaki Ito
- Applicant: Kei Takahashi , Yoshiaki Ito
- Applicant Address: JP Atsugi-shi, Kanagawa-ken
- Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee Address: JP Atsugi-shi, Kanagawa-ken
- Agency: Robinson Intellectual Property Law Office, P.C.
- Agent Eric J. Robinson
- Priority: JP2010-090296 20100409
- Main IPC: H03K21/00
- IPC: H03K21/00

Abstract:
A divider circuit includes a shift register which generates 2X (X is a natural number greater than or equal to 2) pulse signals in accordance with a first clock signal or a second clock signal and outputs them, and a divided signal output circuit which generates a signal to be a third clock signal with a cycle X times longer than a cycle of the first clock signal in accordance with the 2X pulse signals and outputs it. The divided signal output circuit includes X first transistors which control whether voltage of the signal to be the third clock signal is set to first voltage; and X second transistors which control whether voltage of the signal to be the third clock signal is set to second voltage.
Public/Granted literature
- US20110249786A1 DIVIDER CIRCUIT Public/Granted day:2011-10-13
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