Method to support user location in in-structure coverage systems
    1.
    发明授权
    Method to support user location in in-structure coverage systems 有权
    在结构覆盖系统中支持用户位置的方法

    公开(公告)号:US08666428B2

    公开(公告)日:2014-03-04

    申请号:US12010668

    申请日:2008-01-29

    IPC分类号: H04W24/00

    CPC分类号: G01S1/68 G01S13/878

    摘要: In an example embodiment of the present invention, the method includes creating a plurality of data packets. Each data packet in the plurality of data packets includes a plurality of coded cellular signals. The plurality of data packets are sent over a data network associated with at least one sector served by a plurality of transceivers, and at least one of the plurality of transceivers broadcasts the data packets. A location of a mobile station is determined based on received multi-paths associated with response from the mobile station to broadcast of at least one of the plurality of data packets.

    摘要翻译: 在本发明的示例性实施例中,该方法包括创建多个数据分组。 多个数据分组中的每个数据分组包括多个编码的蜂窝信号。 多个数据分组通过与由多个收发器服务的至少一个扇区相关联的数据网络发送,并且多个收发机中的至少一个收发器广播数据分组。 基于与来自移动台的响应相关联的接收的多路径来确定移动站的位置以广播多个数据分组中的至少一个。

    System and apparatus for recording and displaying received information
at a remote location using premises recording unit
    4.
    发明授权
    System and apparatus for recording and displaying received information at a remote location using premises recording unit 失效
    用于使用场所记录单元在远程位置记录和显示接收到的信息的系统和装置

    公开(公告)号:US5727052A

    公开(公告)日:1998-03-10

    申请号:US596814

    申请日:1996-02-05

    摘要: An system and apparatus records and displays information received from a premises such as ambient temperature or information received over a telephone network. A premises recording unit is connected to a telephone network and receives and stores telephone information received therefrom. The premises recording unit includes a wireless transmitter for generating and transmitting a packet of telephone information received from the telephone network. The generated signals can be radio, infrared and ultrasonic. A packet receiver is spaced distant from the premises recording unit but within range of the packet transmission generated therefrom for receiving and storing the packet of telephone information. The packet receiver displays at least a portion of the packet of information.

    摘要翻译: 系统和装置记录和显示从诸如环境温度的场所接收的信息或通过电话网络接收的信息。 房屋记录单元连接到电话网络,并接收并存储从其接收的电话信息。 房屋记录单元包括用于生成和发送从电话网络接收的电话信息的分组的无线发射机。 产生的信号可以是无线电,红外和超声波。 分组接收机与房屋记录单元间隔开,但是在从其生成的分组传输的范围内,用于接收和存储电话信息分组。 分组接收器显示信息分组的至少一部分。

    Portable wireless local area network
    5.
    发明授权
    Portable wireless local area network 失效
    便携式无线局域网

    公开(公告)号:US5684801A

    公开(公告)日:1997-11-04

    申请号:US366540

    申请日:1994-12-30

    IPC分类号: H04L12/28 H04L12/56 H04J3/02

    摘要: A wireless Local Area Network (LAN) includes a repeater which a) synchronizes interface adapters for portable end-user devices and b) retransmits data signals received which retimes and retransmits data signals received from these end-user devices that gain, one at a time, the exclusive right to transmit those signals during a given transmission time subframe by contending for access to the LAN resources that are auctioned off to permit LAN resource utilization that is independent of traffic load and that is implemented in a near collision-free environment.

    摘要翻译: 无线局域网(LAN)包括中继器,其中:a)同步用于便携式终端用户设备的接口适配器,以及b)重传所接收到的数据信号,所述数据信号重新接收并重发从这些终端用户设备接收到的数据信号,一次一个 是在给定传输时间子帧期间通过竞争访问被拍卖的LAN资源以允许独立于流量负载并且在接近无碰撞环境中实现的LAN资源利用的专用权。

    Digital data encoding in video signals using data modulated carrier
signals at non-peaks in video spectra
    6.
    发明授权
    Digital data encoding in video signals using data modulated carrier signals at non-peaks in video spectra 失效
    使用视频光谱中非峰值的数据调制载波信号的视频信号中的数字数据编码

    公开(公告)号:US5663766A

    公开(公告)日:1997-09-02

    申请号:US599500

    申请日:1996-01-25

    CPC分类号: H04N7/081 H04N7/08

    摘要: Digital information is encoded in the video portion of a television signal such that "n" (n is an integer) bits of the digital information are carried by each successive frame in a group of frames. The digital information is encoded by modulating a carrier signal, using, for example, either amplitude shift keying (ASK) or frequency shift keying (FSK), and the modulated carrier is then added to the video signal selectively, only in portions of the television program that (a) are not likely to be perceptible by a viewer, and (b) are of sufficient intensity to transmit the data. The video signal including the encoded digital data, may be transmitted, in real time, to a television receiver, or recorded for later playback. In either event, at a receiver, when the video signal containing the encoded information is displayed on a screen, the image is sensed or "viewed" by a photo detector, the output of which is applied to a band pass filter having a center frequency that corresponds to the oscillator frequency(s) in the encoder. The filter output is thresholded or FM detected, so that the receiver can recover the encoded data. By appropriately including checks bits and synchronization patterns, the bit stream output from the decoder can be synchronized, and the original encoded data recovered. Advantageously, the frequency of the oscillator in the ASK or FSK encoder is chosen so that the energy added to the video signal is in a portion of the frequency spectrum that otherwise contains little energy. This makes the added digital data imperceptible to a viewer. If desired, the same data may be repetitively encoded in several groups of frames, so as to increase the redundancy and thus the reliability of the overall system.

    摘要翻译: 数字信息被编码在电视信号的视频部分中,​​使得数字信息的“n”(n是整数)位由一组帧中的每个连续帧承载。 数字信息通过使用例如振幅移动键控(ASK)或频移键控(FSK)调制载波信号进行编码,然后将调制载波选择性地添加到视频信号中,仅在电视机的一部分 (a)不可能被观众感知到的程序,(b)具有足够的强度来传送数据。 包括编码的数字数据的视频信号可以被实时地发送到电视接收机,或被记录以供稍后播放。 在任一情况下,在接收机中,当包含编码信息的视频信号被显示在屏幕上时,图像被光电检测器感测或“观看”,光电检测器的输出被施加到具有中心频率的带通滤波器 这对应于编码器中的振荡器频率。 滤波器输出被阈值或FM检测,使得接收器可以恢复编码数据。 通过适当地包括检查位和同步模式,可以同步解码器输出的位流,并恢复原始编码数据。 有利地,选择ASK或FSK编码器中的振荡器的频率,使得添加到视频信号的能量在频谱的一部分中,否则其中包含很少的能量。 这使得添加的数字数据对于观看者不可察觉。 如果需要,相同的数据可以重复地编码在几组帧中,以便增加整个系统的冗余度和可靠性。

    Position determining system using transmitted position information
    8.
    发明授权
    Position determining system using transmitted position information 失效
    使用发送位置信息的位置确定系统

    公开(公告)号:US06968737B2

    公开(公告)日:2005-11-29

    申请号:US08778124

    申请日:1997-01-02

    摘要: The present invention is a system and method for automated position location using RF signposting. The present invention comprises a plurality of transmitting units placed throughout a service area. Each transmitting unit repeatedly transmits a signal including position information related to a position associated with the transmitting unit. The position information may be an absolute position or an encoded position based on the structure of a building in which the transmitting unit is located. A receiving unit receives the signal transmitted from a transmitting unit and determines the position of the receiving unit, based on the received indication. The transmitting units are placed to provide uniform coverage of the service area, thus providing position location indoors and in urban areas where GPS does not function properly.

    摘要翻译: 本发明是使用RF路标自动定位定位的系统和方法。 本发明包括放置在服务区域内的多个发送单元。 每个发送单元重复发送包括与发送单元相关联的位置相关的位置信息的信号。 位置信息可以是基于发送单元所在的建筑物的结构的绝对位置或编码位置。 接收单元接收从发送单元发送的信号,并基于接收到的指示确定接收单元的位置。 发射单元被放置以提供服务区域的均匀覆盖,从而在室内和GPS不能正常工作的城市区域中提供位置定位。

    System and apparatus for generating within the premises a dial tone for
enhanced phone services
    10.
    发明授权
    System and apparatus for generating within the premises a dial tone for enhanced phone services 失效
    用于在场内生成用于增强电话服务的拨号音的系统和装置

    公开(公告)号:US5781625A

    公开(公告)日:1998-07-14

    申请号:US488667

    申请日:1995-06-08

    摘要: A system and apparatus includes a premises phone connected to a phone network along a first communication channel. A dial tone controller generates within the premises a dial tone along a second communication channel to a switch and to the premises phone. The dial tone controller receives and processes signals received from the premises phone via the switch along the second communication channel and can generate DTMF tones for establishing communication to the phone network based on generated signals received from the premises phone. The switch is operatively connected between the premises phone and the dial tone controller for switching the premises phone from communication with the phone network along the first communication channel and communication with the dial tone controller via the switch along the second communication channel so that the premises phone receives a dial tone from and sends signals to the dial tone controller.

    摘要翻译: 系统和装置包括沿着第一通信信道连接到电话网络的房屋电话。 拨号音控制器在房屋内产生沿着第二通信信道的拨号音到交换机和房屋电话。 拨号音控制器经由交换机从第二通信信道接收和处理从房屋电话接收的信号,并且可以基于从房屋电话接收的所生成的信号,生成用于建立与电话网络的通信的DTMF音调。 交换机可操作地连接在房屋电话和拨号音控制器之间,用于沿着第一通信信道切换房屋电话与电话网络的通信,并且沿着第二通信信道经由交换机与拨号音控制器通信,使得房屋电话 接收拨号音并向拨号音控制器发送信号。