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    • 24. 发明申请
    • Spread spectrum base station
    • 扩频基站
    • US20050169350A1
    • 2005-08-04
    • US11091061
    • 2005-03-28
    • Donald SchillingJoseph GarodnickGary LompTimothy Moore
    • Donald SchillingJoseph GarodnickGary LompTimothy Moore
    • H04B1/707H04B1/7075H04B7/005
    • H04W52/221H04B1/707H04B1/7075H04W52/225H04W52/228H04W52/52
    • A spread spectrum base station comprises an automatic gain control (AGC) circuit having an input configured to receive a received spread spectrum signal and gain control the received spread spectrum signal to produce a gain controlled signal. A correlation circuit has an input configured to receive the gain controlled signal and correlate the gain controlled signal with a code to produce a despread signal. A power measurement and comparator circuit is configured to receive the despread signal and a control level of the AGC circuit. The circuit processes at least the despread signal and the control level to produce a processed signal and compares the processed signal with a threshold to produce a comparison signal. The comparison signal is used to produce a power command. A multiplexer multiplexes the power command with a signal for transmission over an antenna.
    • 扩展频谱基站包括自动增益控制(AGC)电路,其具有被配置为接收接收的扩频信号的输入,并且对接收到的扩频信号进行增益控制以产生增益受控信号。 相关电路具有被配置为接收增益受控信号并将增益受控信号与代码相关以将其产生解扩信号的输入。 功率测量和比较器电路被配置为接收解扩信号和AGC电路的控制电平。 电路至少处理去扩展信号和控制电平以产生处理的信号,并将处理的信号与阈值进行比较以产生比较信号。 比较信号用于产生功率指令。 多路复用器将功率命令与通过天线传输的信号进行复用。
    • 29. 发明授权
    • Reducing use of periodic key frames in video conferencing
    • 减少在视频会议中使用定期关键帧
    • US08731152B2
    • 2014-05-20
    • US12819119
    • 2010-06-18
    • Ming-Chieh LeeTimothy MooreCe Wang
    • Ming-Chieh LeeTimothy MooreCe Wang
    • H04M11/00
    • H04N7/15H04N19/107H04N19/172H04N19/176
    • The generation and delivery of key frames to clients of a video conference are performed in response to a need for a synchronization point. Instead of automatically sending a key frame periodically to each of the clients in the video conference, a key frame is sent to one or more clients upon the occurrence of an event in the video conference. For example, a key frame may be sent to a client when the client joins the video conference. A key frame may also be sent to a client that has packet loss, upon the request of a client, a speaker change within the video conference, when a new stream is added by the client, and the like. The clients in the video conference that are not affected by the event continue to receive predicted frames.
    • 响应于对同步点的需要,执行视频会议的客户端的关键帧的生成和传送。 视频会议中的每个客户端周期性地自动发送关键帧,而不是在视频会议中发生事件时将关键帧发送给一个或多个客户端。 例如,当客户端加入视频会议时,关键帧可以发送给客户端。 当客户端添加新流时,关键帧也可以被发送到具有分组丢失的客户端,根据客户端的请求,在视频会议内的扬声器改变。 视频会议中不受事件影响的客户端继续接收预测帧。