In-situ gain calibration of radio frequency devices using thermal noise

    公开(公告)号:US20060264192A1

    公开(公告)日:2006-11-23

    申请号:US11132509

    申请日:2005-05-18

    IPC分类号: H04B1/06 H04B7/00

    摘要: An apparatus for calibrating gain of an radio frequency receiver (“Rx”) is disclosed to provide, among other things, a structure for performing in-situ gain calibration of an RF integrated circuit over time and/or over temperature without removing the RF integrated circuit from its operational configuration, especially when the gain of the RF integrated circuit is susceptible to variations in process, such as inherent with the CMOS process. In one embodiment, an exemplary apparatus includes a thermal noise generator configured to generate thermal noise as a calibrating signal into an input of an Rx path of an RF integrated circuit. The apparatus also includes a calibrator configured to first measure an output signal from an output of the Rx path, and then adjust a gain of the Rx path based on the thermal noise. In one embodiment, the thermal noise generator further includes a termination resistance and/or impedance.

    Multimedia system for vehicle with portable dash pad
    2.
    发明授权
    Multimedia system for vehicle with portable dash pad 有权
    多媒体系统车载便携式仪表板

    公开(公告)号:US08755951B2

    公开(公告)日:2014-06-17

    申请号:US13134622

    申请日:2011-06-10

    申请人: Edward Liu

    发明人: Edward Liu

    IPC分类号: G01C21/28 G06F19/00

    CPC分类号: G01C21/3688

    摘要: A multimedia system for vehicle having a plurality of electrical accessories, including a control housing, a control module, and a dash pad. The control module includes a central processing module. The central processing module is electrically connected with the electrical accessories in such a manner that the central processing module is arranged to centrally control the electrical accessories. The dash pad is detachably mounted on the control housing and is wirelessly communicated with the central processing module, wherein a user is able wirelessly control the electrical accessories in the vehicle through the dash pad.

    摘要翻译: 一种用于具有多个电气附件的车辆的多媒体系统,包括控制壳体,控制模块和仪表板。 控制模块包括中央处理模块。 中央处理模块与电气附件电连接,使得中央处理模块被布置成集中控制电气配件。 仪表板可拆卸地安装在控制壳体上,并与中央处理模块无线通信,其中用户能够通过仪表板无线地控制车辆中的电气附件。

    Portable DVD player and console arrangement
    4.
    发明授权
    Portable DVD player and console arrangement 有权
    便携式DVD播放机和控制台布置

    公开(公告)号:US07176987B2

    公开(公告)日:2007-02-13

    申请号:US10376016

    申请日:2003-03-03

    申请人: Edward Liu

    发明人: Edward Liu

    IPC分类号: H04N5/64 H04N5/00

    摘要: A portable DVD player, having an output terminal, is detachably received in a console arrangement. The console arrangement includes a DVD player housing, which is adapted for securely supporting within an interior of a vehicle, having a receiving cavity to detachably receive the portable DVD player therein and including an output adapter, which is arranged for electrically extending from a power source of the vehicle, detachably connected to the output terminal of the portable DVD player so as to electrically connect the portable DVD player with respect to the power source of the vehicle.

    摘要翻译: 具有输出端子的便携式DVD播放器可拆卸地接收在控制台装置中。 控制台装置包括:DVD播放器外壳,其适于在车辆的内部可靠地支撑,具有容纳空腔以便在其中可拆卸地接收便携式DVD播放机,并且包括输出适配器,其被布置成从电源 可拆卸地连接到便携式DVD播放器的输出端子,以便将便携式DVD播放器相对于车辆的电源电连接。

    Vehicle seat head rest with built-in electronic appliance
    5.
    发明授权
    Vehicle seat head rest with built-in electronic appliance 有权
    汽车座椅头枕与内置电子设备

    公开(公告)号:US08292364B2

    公开(公告)日:2012-10-23

    申请号:US12583887

    申请日:2009-08-26

    申请人: Edward Liu

    发明人: Edward Liu

    IPC分类号: A47C7/62

    CPC分类号: B60N2/879

    摘要: A vehicle seat head rest for mounting to a vehicle seat of a vehicle includes a head pillow and an electronic appliance including a screen module detachably mounted at the head pillow. The head pillow includes a pillow body having a receiving cavity formed at the rear side of the pillow body, a mounting arrangement for mounting to the vehicle seat, and a replaceable skin detachably encasing the pillow body at a position that a peripheral edge of the replaceable skin is folded at the rear side of the pillow body. The screen module is detachably mounted within the receiving cavity and is supported by an interior wall thereof. Thus, the peripheral edge of the replaceable skin is hidden after the screen module is detachably mounted at the rear side of the head pillow.

    摘要翻译: 用于安装到车辆的车辆座椅的车辆座椅头部座椅包括头枕头和包括可拆卸地安装在头枕上的屏幕模块的电子设备。 头枕包括:枕头本体,其具有形成在枕头本体的后侧的接收腔,用于安装到车辆座椅的安装装置,以及可更换的皮肤,其可拆卸地将枕头本体包围在可更换的枕头的外围边缘的位置处 皮肤折叠在枕头身体的后侧。 屏幕模块可拆卸地安装在接收腔内并由其内壁支撑。 因此,在屏幕模块可拆卸地安装在头枕的后侧之后,可更换皮肤的外围边缘被隐藏。

    Car seat head rest with built-in screen
    6.
    发明授权
    Car seat head rest with built-in screen 有权
    汽车座椅头枕内置屏幕

    公开(公告)号:US08066329B2

    公开(公告)日:2011-11-29

    申请号:US12288952

    申请日:2008-10-24

    申请人: Edward Liu

    发明人: Edward Liu

    IPC分类号: A47C7/72 A47C7/36

    CPC分类号: B60N2/879

    摘要: A car seat head rest, which is adapted for mounting on a car seat having two spaced apart retention slots, includes a head pillow, a display screen supported at the rear side of the head pillow, and an adjustable mounting arrangement including a length-adjustable sliding guider longitudinally supported within the interior cavity of the head pillow, a supporting frame having two overlapped sliding panels and two supporting arms downwardly and parallelly extended from the sliding panels respectively through the bottom side of the head pillow to define an engaging distance between the two supporting arms, and an adjuster provided at the sliding guider to control a length of the sliding guider so as to selectively adjust the engaging distance of the supporting arms for slidably engaging with the two retention slots respectively so as to securely support the head pillow on the car seat.

    摘要翻译: 适用于安装在具有两个间隔开的保持槽的汽车座椅上的汽车座椅头枕包括头枕头,支撑在头枕头后侧的显示屏,以及可调整的安装装置,其包括长度可调 滑动导向器纵向地支撑在头枕的内部空腔内,支撑框架具有两个重叠的滑动面板和两个支撑臂,两个支撑臂分别从滑动面板向下并且平行地延伸穿过头枕的底侧,以限定两者之间的接合距离 支撑臂,以及设置在滑动导向器上的调节器,以控制滑动导向件的长度,以便分别选择性地调整支撑臂的接合距离以与两个固定槽滑动接合,以便将头枕牢固地支撑在 汽车座椅。

    Car seat head rest with built-in screen
    7.
    发明授权
    Car seat head rest with built-in screen 有权
    汽车座椅头枕内置屏幕

    公开(公告)号:US07597394B2

    公开(公告)日:2009-10-06

    申请号:US11591197

    申请日:2006-10-31

    申请人: Edward Liu

    发明人: Edward Liu

    IPC分类号: A47C7/72 A47C7/36 B60N2/48

    CPC分类号: B60N2/879

    摘要: An adjustable car seat head rest adapted for mounting on a car seat having two spaced apart retention slots, a head pillow having an interior cavity for a supporting frame wherein a display screen is supported thereon, and an adjustable mounting arrangement which allows the head pillow to be mounted onto the car seat. The mounting arrangement further has a length-adjustable sliding guider, two supporting arms downwardly and parallelly extended from the sliding guider to define an engaging distance between them, and an adjuster provided at the sliding guider to selectively adjust the engaging distance of the supporting arms such that the two supporting arms are adapted for engaging with the two retention slots respectively so as to securely support the head pillow on the car seat.

    摘要翻译: 一种可调节的汽车座椅头枕,其适于安装在具有两个间隔开的保持狭槽的汽车座椅上,头枕具有用于支撑框架的内部空腔,其中显示屏幕被支撑在其上,以及可调节的安装布置, 安装在汽车座椅上。 该安装装置还具有长度可调节的滑动引导件,两个支撑臂从滑动引导件向下并且平行地延伸以限定它们之间的接合距离,以及设置在滑动导向器处的调节器,以选择性地调节支撑臂的接合距离, 两个支撑臂分别适于与两个固定槽啮合,从而可靠地将头部枕头支撑在汽车座椅上。

    Advertising using extracted context sensitive information and data of interest from voice/audio transmissions and recordings
    8.
    发明申请
    Advertising using extracted context sensitive information and data of interest from voice/audio transmissions and recordings 审中-公开
    使用提取的语境敏感信息和语音/音频传输和录音感兴趣的数据进行广告

    公开(公告)号:US20080109222A1

    公开(公告)日:2008-05-08

    申请号:US11592676

    申请日:2006-11-04

    申请人: Edward Liu

    发明人: Edward Liu

    IPC分类号: G10L15/00 G06Q30/00

    摘要: Method and apparatus that use voice/audio recognition and analysis technologies to deliver assigned context sensitive information and data of interest (keywords, phrases, mood, etc.). Context sensitive information and data of interest can be extracted from any voice/audio transmissions and voice/audio recordings (or any transmission or recording that includes voice/audio) for advertising purposes. This invention includes the said assigned context sensitive information and data of interest extraction method using voice/audio recognition and analysis technologies. Most importantly, this invention opens up new doors to advertising using extracted context sensitive information and data of interest from voice/audio transmissions and recordings (or any transmission that includes voice/audio).

    摘要翻译: 使用语音/音频识别和分析技术提供分配的上下文敏感信息和感兴趣的数据(关键字,短语,心情等)的方法和装置。 可以从用于广告目的的任何语音/音频传输和语音/音频记录(或包括语音/音频的任何传输或记录)中提取上下文敏感信息和感兴趣的数据。 本发明包括使用语音/音频识别和分析技术的所述分配的上下文敏感信息和兴趣提取方法的数据。 最重要的是,本发明为使用提取的上下文相关信息和来自语音/音频传输和记录(或包括语音/音频的任何传输)感兴趣的数据的广告开辟了新的大门。

    Integrated filter tuning method and apparatus
    9.
    发明授权
    Integrated filter tuning method and apparatus 失效
    集成滤波器调谐方法及装置

    公开(公告)号:US06404276B1

    公开(公告)日:2002-06-11

    申请号:US09095182

    申请日:1998-06-10

    申请人: Edward Liu

    发明人: Edward Liu

    IPC分类号: H03K500

    摘要: A transmission system for transmitting a signal from a host to a transmission medium is disclosed. The transmission system includes a current-mode digital-analog converter, an on-chip low-pass filter, a line driver, and output impedance control. Further, a method for transmitting a signal from a host to a transmission medium using on-chip filtering is disclosed. More specifically, an apparatus and method for providing precise control of the filter cut-off frequency at high frequencies is disclosed. The transmission system and method can be used in transmission of Ethernet signals onto an unshielded twisted pair cable. In addition, with appropriate modification, the transmission system and method can be used for transmitting ATM or other signals onto a transmission medium.

    摘要翻译: 公开了一种用于将信号从主机发送到传输介质的传输系统。 传输系统包括电流模式数模转换器,片上低通滤波器,线路驱动器和输出阻抗控制。 此外,公开了一种使用片上滤波从主机向传输介质发送信号的方法。 更具体地,公开了一种用于在高频率下提供对滤波器截止频率的精确控制的装置和方法。 传输系统和方法可用于将以太网信号传输到非屏蔽双绞线上。 此外,通过适当的修改,传输系统和方法可以用于将ATM或其他信号发送到传输介质上。

    Signal processing scheme utilizing oversampled switched capacitor filter
    10.
    发明授权
    Signal processing scheme utilizing oversampled switched capacitor filter 失效
    采用过采样开关电容滤波器的信号处理方案

    公开(公告)号:US5982229A

    公开(公告)日:1999-11-09

    申请号:US971428

    申请日:1997-11-17

    IPC分类号: H03H19/00 H03K5/00

    CPC分类号: H03H19/004

    摘要: A novel signal processing scheme comprises a digital to analog converter which is clocked at a first frequency, and a switched capacitor filter which receives input from the digital to analog converter and is clocked at a second frequency which is a multiple N times the first frequency. A preferred version of the present invention further comprises an analog signal sychronization circuit which allows the switched capacitor filter to oversample output from the digital to analog converter. The analog signal sychronization circuit comprises a sample and hold circuit, which receives input from the digital to analog converter and holds the input so that the switched capacitor filter can sample the same input N times, and a digital clock generator, which clocks the sample and hold circuit such that the sample and hold circuit only samples settled and valid output data from the digital to analog converter. An RC active filter receives input from the switched capacitor filter and rejects signal images at the first and higher frequencies.

    摘要翻译: 一种新颖的信号处理方案包括以第一频率计时的数模转换器和开关电容滤波器,其接收来自数模转换器的输入,并以第一频率倍数N的第二频率进行计时。 本发明的优选方案还包括模拟信号同步电路,其允许开关电容滤波器对来自数模转换器的输出进行过采样。 模拟信号同步电路包括采样和保持电路,其从数模转换器接收输入并保持输入,使得开关电容滤波器可以对相同的输入进行N次采样;以及数字时钟发生器,其对时钟进行采样和 保持电路使得采样和保持电路只从数模转换器采样稳定和有效的输出数据。 RC有源滤波器从开关电容滤波器接收输入,并在第一和更高频率处拒绝信号图像。