DC offset compensation device
    1.
    发明授权
    DC offset compensation device 失效
    直流偏移补偿装置

    公开(公告)号:US5760629A

    公开(公告)日:1998-06-02

    申请号:US683309

    申请日:1996-07-18

    CPC分类号: H03F1/30

    摘要: A level detector 2 detects variation of the amplitude of an input signal a to output a level signal b representing HIGH or LOW in order to define the head portion of the input circuit a. A time constant control signal 3 generates a time constant control signal c based on the level signal b to control a time constant of an estimator 4 so as to make the time constant small for a prescribed period from a time when the level signal b varies from HIGH to LOW. The estimator 4 estimates DC offset included in the input signal a with the a time constant variation according to the time constant control signal c to output an estimate d. A compensator 1 subtracts the estimate d from the input signal a to obtain a compensation output. Therefore, in the estimator 4, the speed of estimating the DC offset is different between a period corresponding to the head portion of the input signal a and other periods. Thus, a DC offset compensation device can be configured to be capable of fast DC offset compensation at the head portion of the input signal a and stable DC offset compensation at the other portions.

    摘要翻译: 电平检测器2检测输入信号a的振幅的变化,以输出表示HIGH或LOW的电平信号b,以便限定输入电路a的头部。 时间常数控制信号3基于电平信号b产生时间常数控制信号c,以控制估计器4的时间常数,使得从电平信号b变化的时间起使指定时间段的时间常数小 高到低。 估计器4估计包括在输入信号a中的DC偏移与根据时间常数控制信号c的时间常数变化以输出估计d。 补偿器1从输入信号a中减去估计值d以获得补偿输出。 因此,在估计器4中,估计DC偏移的速度在对应于输入信号a的头部的周期与其它周期之间是不同的。 因此,DC偏移补偿装置可以被配置为能够在输入信号a的头部处具有快速DC偏移补偿,而在其它部分能够进行稳定的DC偏移补偿。

    Differential detecting device
    2.
    发明授权
    Differential detecting device 失效
    差分检测装置

    公开(公告)号:US5712879A

    公开(公告)日:1998-01-27

    申请号:US506321

    申请日:1995-07-24

    摘要: A signal adding device and a differential signal detecting device, wherein the signal adding device adds n input signals using n A/D converters, a selector and a lowpass filter. The n input signals are sampled in sequence by the A/D converter and digitized. Each digitized data is time-division multiplexed by the selector and input to the lowpass filter. The output of the lowpass filter is equal to an added signal of n input signals. The differential signal detecting device detects from inphase and quadrature-phase baseband signals the sine and cosine components of a phase difference at two instants of the phase-modulated signal. Two A/D converters digitize and convert the inphase and quadrature-phase baseband signals to inphase data and quadrature-phase data at predetermined intervals. A cosine component calculating unit calculates the cosine component by alternately selecting the inphase data and the quadrature-phase data. Similarly, a sine component calculating unit calculates the sine component by alternately selecting the inphase data and the quadrature-phase data. Two selectors select either the inphase data or the quadrature-phase data at predetermined intervals. By alternately selecting the inphase data and quadrature-phase data, and then multiplying the results, differential detection can be achieved with fewer multipliers and adders than the prior art differential detecting devices.

    摘要翻译: 一种信号添加装置和差分信号检测装置,其中信号添加装置使用n个A / D转换器,选择器和低通滤波器来添加n个输入信号。 n个输入信号由A / D转换器依次采样并数字化。 每个数字化数据由选择器进行时分复用,并输入低通滤波器。 低通滤波器的输出等于n个输入信号的相加信号。 差分信号检测装置从相位和正交相位基带信号中检测相位调制信号的两个时刻的相位差的正弦和余弦分量。 两个A / D转换器将同相和正交相位基带信号以预定的间隔数字化并转换为同相数据和正交相位数据。 余弦分量计算单元通过交替地选择同相数据和正交相位数据来计算余弦分量。 类似地,正弦分量计算单元通过交替地选择同相数据和正交相位数据来计算正弦分量。 两个选择器以预定间隔选择同相数据或正交相位数据。 通过交替地选择同相数据和正交相位数据,然后将结果相乘,可以利用比现有技术的差分检测装置更少的乘法器和加法器来实现差分检测。

    Method of transmitting video data for wirelessly transmitting three-dimensional video data
    3.
    发明授权
    Method of transmitting video data for wirelessly transmitting three-dimensional video data 有权
    发送用于无线发送三维视频数据的视频数据的方法

    公开(公告)号:US08477179B2

    公开(公告)日:2013-07-02

    申请号:US12648511

    申请日:2009-12-29

    IPC分类号: H04N13/00

    摘要: A source device transmits an output format notify message for video data to a sink device before transmitting the video data to the sink device, the output format notify message including a 3D field storing data for identifying whether the video data to be transmitted is two-dimensional video data or three-dimensional video data transmitted using frame packing. In response to this, the sink device identifies a type and a format structure of the video data, and decodes the received video data based on the identified type and format structure of the video data.

    摘要翻译: 源设备在将视频数据发送到宿设备之前,将用于视频数据的输出格式通知消息发送到宿设备,该输出格式通知消息包括存储用于识别要发送的视频数据是否为二维的3D字段 视频数据或使用帧打包传输的三维视频数据。 响应于此,信宿设备识别视频数据的类型和格式结构,并且基于识别的视频数据的类型和格式结构对接收到的视频数据进行解码。

    Method Of Transmitting Video Data
    5.
    发明申请
    Method Of Transmitting Video Data 审中-公开
    发送视频数据的方法

    公开(公告)号:US20120069894A1

    公开(公告)日:2012-03-22

    申请号:US13375354

    申请日:2009-12-24

    IPC分类号: H04N7/12

    摘要: A sink device wirelessly transmits a device capability response message to a source device. The device capability response message includes a video information message including at least one video format identification code (VIC) for identifying a video format of video data, which the sink device can display, and a coded video information message including compressing parameters for compressing video data. The VIC includes a VIC for 4k2k video data having 3840 or 4096 effective horizontal pixels and 2160 effective vertical pixels.

    摘要翻译: 宿设备将设备能力响应消息无线地发送到源设备。 设备能力响应消息包括视频信息消息,该视频信息消息包括用于识别宿设备可以显示的视频数据的视频格式的至少一个视频格式识别码(VIC),以及包括用于压缩视频数据的压缩参数的编码视频信息消息 。 VIC包括用于4k2k视频数据的VIC,具有3840或4096有效水平像素和2160有效垂直像素。

    Wireless communication system for wirelessly transmitting and receiving CEC message
    6.
    发明授权
    Wireless communication system for wirelessly transmitting and receiving CEC message 有权
    无线通信系统,用于无线发送和接收CEC消息

    公开(公告)号:US08130684B2

    公开(公告)日:2012-03-06

    申请号:US12278853

    申请日:2007-02-13

    IPC分类号: H04B7/00

    摘要: In a wireless communication system including a source device and a sink device for wirelessly transmitting and receiving a CEC message specified in an HDMI standard, a CEC controller of the source device generates and outputs a CEC frame including the CEC message. A controller generates a wireless data packet including the CEC message in the generated CEC frame. A wireless transceiver circuit wirelessly transmits a wireless signal including the generated wireless data packet to the sink device, and receives a wireless signal including a wireless ACK packet and wirelessly transmitted from the sink device in response to the wireless data packet in the wirelessly-transmitted wireless signal.

    摘要翻译: 在包括用于无线发送和接收HDMI标准中指定的CEC消息的源设备和宿设备的无线通信系统中,源设备的CEC控制器生成并输出包括CEC消息的CEC帧。 控制器在所生成的CEC帧中产生包括CEC消息的无线数据分组。 无线收发器电路将包括所生成的无线数据分组的无线信号无线发送到宿设备,并且响应于无线传输无线中的无线数据分组,接收包括无线ACK分组并从宿设备无线发送的无线信号 信号。

    Front-end device of set-top box for two-way communication
    7.
    发明授权
    Front-end device of set-top box for two-way communication 失效
    机顶盒前端设备进行双向通信

    公开(公告)号:US07757263B2

    公开(公告)日:2010-07-13

    申请号:US11374743

    申请日:2006-03-14

    IPC分类号: H04N7/16

    摘要: The device includes a cable interface module having a diplexer that outputs a first signal input from a first connector part connected to a cable television network to a third connector part and outputs a second signal input from a second connector part to a first connector part; a video tuner module having a distributor that branches a first signal input from a fourth connector part having a shape capable of connecting to the cable television network and connected to a third connector part and outputs to a fifth connector part, and inputs the other branched signal into a video tuner; and a communication tuner that selects another channel of the signal output from a fifth connector part.

    摘要翻译: 所述装置包括具有双工器的电缆接口模块,所述双工器将从连接到有线电视网络的第一连接器部分输入的第一信号输出到第三连接器部分,并将从第二连接器部分输入的第二信号输出到第一连接器部分; 一个视频调谐器模块,具有一个分配器,该分配器将从具有连接到有线电视网络的形状的第四连接器部分输入的第一信号分支并连接到第三连接器部分并输出到第五连接器部分,并输入另一分支信号 进入视频调谐器; 以及通信调谐器,其选择从第五连接器部分输出的信号的另一信道。

    WIRELESS COMMUNICATION SYSTEM FOR WIRELESSLY TRANSMITTING AND RECEIVING CEC MESSAGE
    8.
    发明申请
    WIRELESS COMMUNICATION SYSTEM FOR WIRELESSLY TRANSMITTING AND RECEIVING CEC MESSAGE 有权
    无线通信系统,用于无线传输和接收CEC消息

    公开(公告)号:US20100165912A1

    公开(公告)日:2010-07-01

    申请号:US12278853

    申请日:2007-02-13

    IPC分类号: H04W40/00

    摘要: In a wireless communication system including a source device and a sink device for wirelessly transmitting and receiving a CEC message specified in an HDMI standard, a CEC controller of the source device generates and outputs a CEC frame including the CEC message. A controller generates a wireless data packet including the CEC message in the generated CEC frame. A wireless transceiver circuit wirelessly transmits a wireless signal including the generated wireless data packet to the sink device, and receives a wireless signal including a wireless ACK packet and wirelessly transmitted from the sink device in response to the wireless data packet in the wirelessly-transmitted wireless signal.

    摘要翻译: 在包括用于无线发送和接收HDMI标准中指定的CEC消息的源设备和宿设备的无线通信系统中,源设备的CEC控制器生成并输出包括CEC消息的CEC帧。 控制器在所生成的CEC帧中产生包括CEC消息的无线数据分组。 无线收发器电路将包括所生成的无线数据分组的无线信号无线发送到宿设备,并且响应于无线传输无线中的无线数据分组,接收包括无线ACK分组并从宿设备无线发送的无线信号 信号。

    SOURCE DEVICE, SINK DEVICE, COMMUNICATION SYSTEM AND METHOD FOR WIRELESSLY TRANSMITTING THREE-DIMENSIONAL VIDEO DATA USING PACKETS
    9.
    发明申请
    SOURCE DEVICE, SINK DEVICE, COMMUNICATION SYSTEM AND METHOD FOR WIRELESSLY TRANSMITTING THREE-DIMENSIONAL VIDEO DATA USING PACKETS 有权
    源设备,SINK设备,通信系统和使用分组无线传输三维视频数据的方法

    公开(公告)号:US20120044325A1

    公开(公告)日:2012-02-23

    申请号:US13318930

    申请日:2009-12-22

    IPC分类号: H04N13/00

    CPC分类号: H04N13/178 H04N13/194

    摘要: A source device combines right-eye video frame data with left-eye video frame data into combined video frame data every video frame. Then, the source device generates a plurality of packets by dividing the combined video frame data into packets so as to insert information on a horizontal position for a horizontal display time interval and information on a vertical position for a vertical display time interval of a first pixel of the combined video frame data stored in the packets, into a header of each packet for transmitting the combined video frame data, as information for identifying right-eye video frame data and left-eye video frame data.

    摘要翻译: 源设备将右眼视频帧数据与左眼视频帧数据组合成每视频帧的组合视频帧数据。 然后,源设备通过将组合的视频帧数据划分成分组来生成多个分组,以便在水平显示时间间隔的水平位置上插入信息,以及关于第一像素的垂直显示时间间隔的关于垂直位置的信息 存储在分组中的组合视频帧数据转换成用于发送组合视频帧数据的每个分组的报头,作为用于识别右眼视频帧数据和左眼视频帧数据的信息。

    Time division multiplexing communication system, time division multiplexing communication switch system, and communication control method of a communication system
    10.
    发明授权
    Time division multiplexing communication system, time division multiplexing communication switch system, and communication control method of a communication system 失效
    时分复用通信系统,时分复用通信切换系统和通信系统的通信控制方法

    公开(公告)号:US07701928B2

    公开(公告)日:2010-04-20

    申请号:US11166875

    申请日:2005-06-24

    IPC分类号: H04L12/66

    CPC分类号: H04L12/423 H04L12/43

    摘要: A communication system includes communication devices; a switch device having coaxial terminal units to which the communication device are connected, a switch unit of entirely or individually connecting the coaxial terminal units, and a switch control unit of controlling the connection status of the switch unit; and a transmittal right control device. The transmittal right control device is connected to the terminal, and manages the connection status of the switch unit, receives from the communication devices requests for time for communication with other communication devices, determines assignment of time for communications between the communication devices, notifies the communication devices of the assignment, and instructs the switch control unit not to make signals interfere among the communication devices in different combinations for communications in the same time period.

    摘要翻译: 通信系统包括通信设备; 具有连接所述通信装置的同轴终端单元的开关装置,全同或分别连接所述同轴终端单元的开关单元和控制所述开关单元的连接状态的开关控制单元; 和传送权控制装置。 发送权控制装置连接到终端,管理交换单元的连接状态,从通信装置接收与其他通信装置进行通信的时间请求,确定通信装置之间通信的时间分配,通知通信 并且指示切换控制单元不在相同时间段内的通信的不同组合中使通信设备之间的信号干扰。