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    • 47. 发明授权
    • Data transmitting method and apparatus, and data communication method and apparatus
    • 数据发送方法及装置,数据通信方法及装置
    • US08577040B2
    • 2013-11-05
    • US13318715
    • 2010-04-23
    • Takashi Tsurumoto
    • Takashi Tsurumoto
    • H04K1/00
    • H04N21/26613H04L9/0637H04N21/835
    • A data communication system and method in which a need to store a frame count value in a non-volatile memory and update the frame count value is obviated, and in which the effect resulting when a frame with its frame count value altered to a value close to a full count value is transmitted is reduced. When a valid frame count value is not held, an inquiry is made for a frame count value. The frame count value is notified from the receiving end, and the frame count value is acquired. An encryption key is generated on the basis of the frame count value. Data is encrypted with the encryption key. Data in a frame structure is transmitted. When the frame transmission ends, the frame count value is incremented.
    • 一种数据通信系统和方法,其中需要在非易失性存储器中存储帧计数值并更新帧计数值,并且其中将具有其帧计数值的帧改变为值的结果产生的效果 到一个完整的计数值被传输减少。 当不保持有效的帧计数值时,询问帧计数值。 从接收端通知帧计数值,获取帧计数值。 基于帧计数值生成加密密钥。 数据用加密密钥加密。 发送帧结构中的数据。 当帧传输结束时,帧计数值递增。
    • 50. 发明申请
    • Communication system and communication device
    • 通信系统和通信设备
    • US20110254723A1
    • 2011-10-20
    • US13066139
    • 2011-04-07
    • Takashi TsurumotoYoshinori Satoh
    • Takashi TsurumotoYoshinori Satoh
    • G08C19/12
    • G08C17/00G08C17/02G08C2201/12G08C2201/50G08C2201/51G08C2201/93H04N21/42207H04N21/42222
    • A communication system includes: a remote controller having an input unit inputting user operations and a communication unit performing bidirectional communication, transmitting a remote control code in accordance with the user operation with respect to the input unit from the communication unit; and a host device having a communication unit performing bidirectional communication and a host function unit executing processing corresponding to the remote control code received in the communication unit, wherein the host device transmits a status response from the communication unit in response to a status inquiry transmitted from the communication unit of the remote controller, the remote controller repeatedly executes a status check communication procedure including the transmission of the status inquiry and waiting for receiving the status response after transmitting the remote control code at given time intervals during which the communication unit is in a dormant state.
    • 通信系统包括:具有输入用户操作的输入单元和进行双向通信的通信单元的遥控器,根据来自通信单元的输入单元的用户操作发送遥控代码; 以及具有执行双向通信的通信单元和主机功能单元执行与在所述通信单元中接收的所述遥控代码相对应的处理的主机设备,其中,所述主机设备响应于从所述通信单元发送的状态查询,从所述通信单元发送状态响应 遥控器的通信单元,遥控器重复地执行状态检查通信过程,该状态检查通信过程包括发送状态查询并等待接收状态响应,在通信单元处于 休眠状态