发明授权
- 专利标题： Pulse width control circuit controlling pulse width of output light
- 专利标题（中）： 脉宽控制电路控制输出光的脉宽
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申请号： US10754703申请日： 2004-01-12
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公开(公告)号： US06940327B2公开(公告)日： 2005-09-06
- 发明人: Makoto Miki , Toru Matsuyama
- 申请人： Makoto Miki , Toru Matsuyama
- 申请人地址： JP Kawasaki
- 专利权人： Fujitsu Limited
- 当前专利权人： Fujitsu Limited
- 当前专利权人地址： JP Kawasaki
- 代理机构： Staas & Halsey LLP
- 主分类号： H01S5/042
- IPC分类号： H01S5/042 ; H03K3/017 ; H03K5/04 ; H04L25/03
摘要：
A circuit for controlling pulse width of a signal for driving a light emitting element, includes a pulse width control circuit capable of responding to multi-bit rates in the same circuit structure. For this purpose, the pulse width control circuit has a Tr/Tf control section controlling at least one of a rise time Tr and a fall time Tf of an input signal according to the bit rate of the input signal; a waveform shaping section shaping a signal output from the Tr/Tf control section to generate an output signal; and a control signal generating section generating a control signal for controlling an operation of the Tr/Tf control section based on pulse width control information.