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1. 发明授权

US5740534A Method for determining available frequencies in selective call receivers 失效
标题翻译：用于确定选呼接收机中可用频率的方法
公开(公告)号：US5740534A
公开(公告)日：1998-04-14
申请号：US605560
申请日：1996-02-22
申请人： Douglas I. Ayerst , Malik J. Khan , Morris Moore , Leonard E. Nelson , Kwok K. Choi
发明人： Douglas I. Ayerst , Malik J. Khan , Morris Moore , Leonard E. Nelson , Kwok K. Choi
IPC分类号： H04W88/02 , H04B7/00 , H04Q7/00
CPC分类号： H04W88/022
摘要： A selective call receiver (106) has a frequency synthesizer (708) for scanning a plurality of frequencies to determine a control channel to receive a signal and a receiver (704) for receiving the signal representative of an available frequency associated with a geographic region. The signal includes a channel identifier (404), a frequency assignment (406) and an active channel indicator (408). A processor (712) associates the channel identifier (404) with the frequency assignment (406) in response to the active channel indicator (408) indicating an available frequency of the geographic region and a memory (720) stores channel identifiers (404) associated with frequency assignments (406) designating available frequencies (408). The receiver (704) receives an address (333) and the channel identifier (404) on the control channel, a decoder (714) decodes the channel identifier (404) associated with the frequency assignment (406) to determine the available frequency where a message will be transmitted and the frequency synthesizer (708) switches to the available frequency indicated by the channel identifier (404) for receiving the message.
摘要翻译：选呼接收机（106）具有用于扫描多个频率以确定用于接收信号的控制信道的频率合成器（708）和用于接收表示与地理区域相关联的可用频率的信号的接收机（704）。信号包括信道标识符（404），频率分配（406）和有效信道指示符（408）。响应于指示地理区域的可用频率的活动信道指示符（408），处理器（712）将信道标识符（404）与频率分配（406）相关联，并且存储器（720）存储相关联的信道标识符（404）具有指定可用频率的频率分配（406）（408）。接收器（704）在控制信道上接收地址（333）和信道标识符（404），解码器（714）解码与频率分配（406）相关联的信道标识符（404），以确定可用频率，其中消息将被发送，并且频率合成器（708）切换到由用于接收消息的信道标识符（404）指示的可用频率。

2. 发明授权

US5600703A Method and apparatus for remotely retrieving messages intended for an acknowledge-back pager in a selective call communication system 失效
标题翻译：用于远程检索旨在用于选呼通信系统中的确认寻呼机的消息的方法和装置
公开(公告)号：US5600703A
公开(公告)日：1997-02-04
申请号：US393797
申请日：1995-02-24
申请人： Tri T. Dang , Kwok K. Choi , Lowell C. Hufferd III
发明人： Tri T. Dang , Kwok K. Choi , Lowell C. Hufferd III
IPC分类号： H04W84/02 , H04Q7/12
CPC分类号： H04W84/025
摘要： A method and apparatus remotely retrieves messages intended for an acknowledge-back pager (400, 700) in a communication system including a fixed portion (100) and the pager (400, 700). The communication system has provisions for interconnection with a user by telephone. The fixed portion (100) accepts (502) a selective call origination from a caller, including a message intended for the pager (400, 700) and sends (504) the message to the pager (400, 700) in response. The pager (400, 700) stores (506) the message within a pager memory (418). Thereafter the fixed portion (100) accepts (508) a selective call origination from the user, including a predetermined retrieval code associated with the pager (400, 700). The fixed portion (100) sends (510) a predetermined retrieval command to the pager (400, 700) in response, and the pager (400, 700) retrieves the message from the pager memory (418) in response. The pager (400, 700) transmits (512) the message retrieved to the fixed portion (100), which then stores (514) the message within a controller memory (232, 602) and sends (514) the message by telephone to the user.
摘要翻译：方法和装置在包括固定部分（100）和寻呼机（400,700）的通信系统中远程检索旨在用于应答寻呼机（400,700）的消息。通信系统具有通过电话与用户互连的规定。固定部分（100）接受（502）来自呼叫者的选择性呼叫发起，包括用于寻呼机（400,700）的消息，并响应地将消息发送（504）到寻呼机（400,700）。寻呼机（400,700）将消息存储（506）到寻呼机存储器（418）内。此后，固定部分（100）接受（508）来自用户的选择性呼叫发起，包括与寻呼机（400,700）相关联的预定检索码。固定部分（100）作为响应将预定的检索命令（510）发送到寻呼机（400,700），并且寻呼机（400,700）响应于从寻呼机存储器（418）检索消息。寻呼机（400,700）将检索到的消息（512）发送（512）到固定部分（100），然后固定部分（100）将该消息存储在控制器存储器（232,602）内，并通过电话将该消息发送（514）到用户。

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