Surveillance camera system
    1.
    发明授权

    公开(公告)号:US10542200B2

    公开(公告)日:2020-01-21

    申请号:US15894665

    申请日:2018-02-12

    发明人: Yutaka Suwa

    IPC分类号: H04N5/232 H04N7/18 H04W84/12

    摘要: A camera transmits a DECT registration request including DECT camera information. A controller stores the DECT camera information and transmits a DECT registration response including DECT controller information. The camera stores the DECT controller information and transmits a wireless LAN registration request including wireless LAN camera information. The controller stores the wireless LAN camera information and transmits a wireless LAN registration response including wireless LAN controller information. The camera stores the wireless LAN controller information.

    Wireless communication device and communication terminal
    2.
    发明授权
    Wireless communication device and communication terminal 有权
    无线通信设备和通信终端

    公开(公告)号:US09270419B2

    公开(公告)日:2016-02-23

    申请号:US14668198

    申请日:2015-03-25

    摘要: A device divides a sampled sound signal into a high frequency signal and a low frequency signal, individually encodes the high frequency signal and the low frequency signal, and generates error detection code pertinent to the high frequency ADPCM data and the low frequency ADPCM data. The device replaces data pertinent to some of a plurality of bits which configure the low frequency ADPCM data with the error detection code and transmits them. A receiver side receives the high frequency ADPCM data and the low frequency ADPCM data, and individually processes the high frequency ADPCM data and the low frequency ADPCM data in accordance with a value of the error detection code.

    摘要翻译: 一个设备将采样的声音信号分成高频信号和低频信号,对高频信号和低频信号进行单独编码,并产生与高频ADPCM数据和低频ADPCM数据相关的检错码。 该装置用与错误检测码配置低频ADPCM数据的多个比特中的一些比特相关的数据进行替换,并发送它们。 接收机侧接收高频ADPCM数据和低频ADPCM数据,并且根据错误检测码的值单独处理高频ADPCM数据和低频ADPCM数据。

    Channel determination method and wireless communication apparatus
    3.
    发明授权
    Channel determination method and wireless communication apparatus 有权
    信道确定方法和无线通信装置

    公开(公告)号:US09479318B2

    公开(公告)日:2016-10-25

    申请号:US14318037

    申请日:2014-06-27

    发明人: Yutaka Suwa

    IPC分类号: H04L5/00 H04W16/14 H04L27/00

    摘要: A channel determination method is disclosed that can avoid performance deterioration caused by interference even in a situation in which radio waves from other communication apparatuses including a microwave oven using the same frequency band are mixed. This method detects a predetermined preamble in a received signal when performing carrier sensing while switching between reception frequencies of a receiving section. The method examines, using a counter, how often electric field strength exceeds a predetermined threshold for each channel during the carrier sensing, disables, upon detecting a signal from another 802.11 apparatus, a channel from which the signal is detected and also disables a channel for which the counter shows a count value exceeding the threshold.

    摘要翻译: 公开了即使在使用包括使用相同频带的微波炉的其他通信装置的电波混合的情况下也能够避免由干扰引起的性能劣化的信道确定方法。 当在接收部分的接收频率之间切换时,该方法在执行载波检测时检测接收信号中的预定前导码。 该方法使用计数器检测在载波感测期间电场强度超过每个信道的预定阈值的频率,在检测到来自另一个802.11设备的信号时,禁止检测信号的信道,并且还禁用用于 计数器显示超过阈值的计数值。

    Base station apparatus, communication system and synchronization method
    4.
    发明授权
    Base station apparatus, communication system and synchronization method 有权
    基站装置,通信系统和同步方法

    公开(公告)号:US09386548B2

    公开(公告)日:2016-07-05

    申请号:US13865615

    申请日:2013-04-18

    IPC分类号: H04W56/00 H04J3/06

    摘要: A base station apparatus includes a wireless communication unit, a wired communication unit, and a communication timing correction unit. If the wireless communication unit fails to receive a synchronization signal from another base station apparatus at given reception timing, the wired communication unit transmits a synchronization state confirmation signal for confirming a synchronization state between the base station and another base station apparatus, and receives a synchronization state response signal including a determination result of the synchronization state. The communication timing correction unit corrects a communication timing based on the synchronization state response signal.

    摘要翻译: 基站装置包括无线通信单元,有线通信单元和通信定时校正单元。 如果无线通信单元在给定的接收定时未能从另一基站装置接收到同步信号,则有线通信单元发送用于确认基站与另一基站装置之间的同步状态的同步状态确认信号,并接收同步 状态响应信号,包括同步状态的确定结果。 通信定时校正单元基于同步状态响应信号校正通信定时。