
基本信息:
- 专利标题: 电子电路
- 专利标题(英):Driving circuit of light emitting component
- 申请号:CN201010116548.4 申请日:2010-01-28
- 公开(公告)号:CN101799732B 公开(公告)日:2012-06-27
- 发明人: 近藤英雄
- 申请人: 三洋电机株式会社 , 三洋半导体株式会社
- 申请人地址: 日本国大阪府守口市京阪本通2丁目5番5号
- 专利权人: 三洋电机株式会社,三洋半导体株式会社
- 当前专利权人: 三洋电机株式会社,三洋半导体株式会社
- 当前专利权人地址: 日本国大阪府守口市京阪本通2丁目5番5号
- 代理机构: 中科专利商标代理有限责任公司
- 代理人: 周国城
- 优先权: 2009-016646 2009.01.28 JP
- 主分类号: G06F1/04
- IPC分类号: G06F1/04
This invention makes it possible to reduce a power consumption of an electronic circuit (microcomputer, for example) while preventing malfunctioning of an oscillator by appropriately setting a power supply impedance of a low frequency oscillator corresponding to an operation mode. A high frequency oscillator (11), a medium frequency oscillator (12) and a low frequency oscillator (13) are provided as sources of system clocks. In addition, there is provided a quartz oscillator (30) to generate a clock for a timepiece. When the high frequency oscillator (11) is in operation, a power supply impedance of the quartz oscillator (30) is reduced to improve a noise tolerance. In a waiting period during which the high frequency oscillator (1), the medium frequency oscillator (12) and the low frequency oscillator (13) are halted, on the other hand, the power supply impedance of the quartz oscillator (30) is increased to suppress the power consumption.
公开/授权文献:
- CN101799732A 发光元件的驱动电路 公开/授权日:2010-08-11
IPC结构图谱:
G | 物理 |
--G06 | 计算;推算;计数 |
----G06F | 电数字数据处理 |
------G06F1/00 | 不包括在G06F3/00至G06F13/00和G06F21/00各组的数据处理设备的零部件 |
--------G06F1/04 | .产生时钟信号的或分配时钟信号的,或者直接从这个设备中得出信号的 |