发明申请
US20050001608A1 Phase shift circuit application for DVD ROM chipset in HTOL board design
审中-公开
DVD ROM芯片组的相移电路应用在HTOL电路板设计中
- 专利标题： Phase shift circuit application for DVD ROM chipset in HTOL board design
- 专利标题（中）： DVD ROM芯片组的相移电路应用在HTOL电路板设计中
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申请号： US10656006申请日： 2003-09-04
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公开(公告)号： US20050001608A1公开(公告)日： 2005-01-06
- 发明人: Brian Peng , Michael Tsai
- 申请人： Brian Peng , Michael Tsai
- 优先权： TW92118296 20030704
- 主分类号： G01R23/165
- IPC分类号： G01R23/165 ; G01R31/28 ; G01R31/303 ; G01R31/3167
摘要：
A board for testing DVD (Digital Versatile Disc) ROM (Read Only Memory) chip-set and associated circuit for generating radio frequency signals with phase difference are provided. The circuit includes signal potential dividers, high pass filters, and a phase shifter. The circuit receives a digital input signal, which has a predetermined frequency, generated by a chip test device. The radio frequency signals with phase difference for testing the analog circuit block of DVD ROM chipset are generated according to the received digital input signal. Therefor, the high temperature operating life test for optical disc drive chips can be achieved.
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