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    • 2. 发明申请
    • MOTHER BOARD MODULE AND PERSONAL COMPUTER HOST USING THE SAME
    • 母板模块和个人电脑主机使用相同
    • US20080301346A1
    • 2008-12-04
    • US12108517
    • 2008-04-24
    • Chih-Wei WuChia-Yi Chang
    • Chih-Wei WuChia-Yi Chang
    • H05K7/10
    • G06F1/184H05K1/141H05K1/148H05K2201/10356
    • A mother board module suitable for being disposed in a housing of a personal computer (PC) host is provided. The housing has expansion port openings at a rear wall of the housing. The mother board module includes a mother board, a sound card and a signal transmission cable. The mother board includes a circuit board and interface card slots. The interface card slots are juxtaposed on the circuit board and disposed corresponding to the expansion port openings respectively. The sound card has a fixing plate and audio jacks disposed thereon. Each of the audio jacks has a plug-in hole. The fixing plate is suitable for being removably fixed on one of the expansion port openings, which exposes the plug-in holes of the audio jacks beyond the rear wall. Two ends of the signal transmission cable are connected with the sound card and the circuit board respectively.
    • 提供一种适用于设置在个人计算机(PC)主机的壳体中的母板模块。 壳体在壳体的后壁处具有膨胀口开口。 母板模块包括母板,声卡和信号传输电缆。 主板包括电路板和接口卡插槽。 接口卡插槽并置在电路板上,分别对应于扩展端口。 声卡具有固定板和设置在其上的音频插孔。 每个音频插孔都有一个插入孔。 固定板适于可拆卸地固定在其中一个扩展口开口上,使音频插孔的插入孔暴露在后壁之外。 信号传输电缆的两端分别与声卡和电路板相连。
    • 6. 发明申请
    • Method for Compensating Gain Mismatch Between Two DACs and Apparatus Thereof
    • 用于补偿两个DAC之间的增益不匹配的方法及其设备
    • US20050219087A1
    • 2005-10-06
    • US10906968
    • 2005-03-14
    • Chia-Yi ChangYeou-Jyh Tsai
    • Chia-Yi ChangYeou-Jyh Tsai
    • H03M1/06H03M1/10H03M1/66H03M1/70
    • H03M1/1023H03M1/1014H03M1/66
    • The present invention discloses a method and related apparatus for compensating a gain mismatch between a first DAC and a second DAC. The second DAC is connected to a gain amplifier. The method includes the following steps. Determine a first gain value corresponding to the first DAC. Control the gain amplifier with a first control value and determine a second gain value corresponding to the second DAC and the gain amplifier. Control the gain amplifier with a second control value and determine a third gain value corresponding to the second DAC and the gain amplifier. Without utilizing a predetermined characteristic parameters, determine a calibration control value according to the first, second, third gain values, and the first and second control values. Control the gain amplifier with the calibration control value to compensate for the gain mismatch between the first DAC and the second DAC.
    • 本发明公开了一种用于补偿第一DAC和第二DAC之间的增益失配的方法和相关装置。 第二个DAC连接到增益放大器。 该方法包括以下步骤。 确定对应于第一DAC的第一增益值。 以第一控制值控制增益放大器,并确定对应于第二DAC和增益放大器的第二增益值。 用第二控制值控制增益放大器,并确定对应于第二DAC和增益放大器的第三增益值。 在不利用预定特性参数的情况下,根据第一,第二,第三增益值以及第一和第二控制值来确定校准控制值。 用校准控制值控制增益放大器,以补偿第一个DAC和第二个DAC之间的增益失配。