公开(公告)号：US20060165133A1

公开(公告)日：2006-07-27

申请号：US11265311

申请日：2005-11-01

Applicant: Akane Yokota ,  Kazuo Moritomo

Inventor： Akane Yokota ,  Kazuo Moritomo

IPC: H01S3/30 ,  H01S3/10

CPC classification number: H04L12/12 ,  H04W8/005 ,  H04W52/0225 ,  H04W84/18 ,  Y02D70/142 ,  Y02D70/22

Abstract: When it is determined that a power mode is a power save mode, and that a MAC address in a received beacon matches the MAC address of a wireless communication apparatus which newly joins a wireless network, the power mode of all the communication apparatuses which have joined the wireless network is switched from the power save mode to a normal power mode.

公开(公告)号：US06616352B1

公开(公告)日：2003-09-09

申请号：US09586883

申请日：2000-06-05

Applicant: Junji Shigeta ,  Toshihiko Myojo ,  Yasuhiro Takahashi ,  Kazuo Moritomo

Inventor： Junji Shigeta ,  Toshihiko Myojo ,  Yasuhiro Takahashi ,  Kazuo Moritomo

IPC: H04B1000

CPC classification number: H04B10/1125

Abstract: A bidirectional optical space transmission system is made up of a pair of optical transmission apparatus. Each optical transmission apparatus comprises a signal generating circuit for generating a pilot signal, a multiplexing section for multiplexing the pilot signal and a main signal to be transmitted, an electrooptic converter section for emitting an optical signal on the basis of the signal produced by the multiplexing process, a light receiving element for receiving an optical signal transmitted from the partner optical transmission apparatus and detecting a pilot signal contained therein, and a demodulation circuit for demodulating the pilot signal detected by the light receiving element. Pilot signals multiplexed with main signals to be transmitted through the bidirectional optical transmission system are subjected to spreading modulation and demodulated for spreading by the demodulation circuit.

Abstract translation: 双向光学空间传输系统由一对光传输装置组成。 每个光传输装置包括用于产生导频信号的信号发生电路，用于复用导频信号的复用部分和要传输的主信号，基于由多路复用产生的信号发射光信号的电光转换器部分 处理光接收元件，用于接收从伙伴光传输装置发送的光信号并检测其中包含的导频信号;以及解调电路，用于解调由光接收元件检测的导频信号。 对通过双向光传输系统发送的主信号进行多路复用的导频信号经过扩展调制，并由解调电路进行解调以进行扩频。