公开(公告)号：WO1990014735A1

公开(公告)日：1990-11-29

申请号：PCT/US1990002446

申请日：1990-05-04

Applicant: MOTOROLA, INC.

Inventor： MOTOROLA, INC. ,  SIWIAK, Kazimierz

IPC: H04Q07/00

CPC classification number: H04L9/065 ,  H04L2209/34

Abstract: A transmitter (100 or 300) and receiver (205 or 305) for use in a data transmission system are disclosed. In order to provide reliable communication, data to be transmitted is both encoded and encrypted. An EXCLUSIVE OR operation is utilized for encryption and decryption of the data.

Abstract translation: 公开了一种用于数据传输系统的发射机（100或300）和接收机（205或305）。 为了提供可靠的通信，要发送的数据被编码和加密。 使用EXCLUSIVE OR操作来加密和解密数据。

公开(公告)号：WO1989006407A1

公开(公告)日：1989-07-13

申请号：PCT/US1988004336

申请日：1988-12-05

Applicant: MOTOROLA, INC.

Inventor： MOTOROLA, INC. ,  SIWIAK, Kazimierz

IPC: G08B05/22

CPC classification number: H04W84/025 ,  G08B3/1016 ,  H04J13/004 ,  H04J13/18

Abstract: An acknowledge back (ack-back) paging system (100) is provided which includes a central station (110) which transmits a group of message signals to a group of ack-back pagers (121, 122,...) which are addressed as a group. The users of the group of addressed ack-back pagers indicate a response to their respective pagers thus providing ack-back data. The pagers in the group of addressed ack-back pagers then simultaneously transmit back to the central station their ack-back signals using different respective pseudorandom codes, a different pseudorandom code being dynamically allocated to each of the pagers in the group.

公开(公告)号：WO1992008294A1

公开(公告)日：1992-05-14

申请号：PCT/US1991007407

申请日：1991-10-07

Applicant: MOTOROLA, INC.

Inventor： MOTOROLA, INC. ,  MITTEL, James, G. ,  DAVIS, Walter, Lee ,  FERNANDEZ, Sergio ,  PONCE DE LEON, Lorenzo, A. ,  SIWIAK, Kazimierz

IPC: H04B01/16

CPC classification number: H03J1/005 ,  H03D7/163 ,  H04B1/14

Abstract: A receiver (200) includes an automatic frequency controller that determines the frequency of a received signal (408), and calculates a frequency error (410) from the received signal. The frequency error is used to calculate a correction factor that is used to adjust the frequency (412) of an oscillator (308) in response to the determined error.

公开(公告)号：EP0556269B1

公开(公告)日：1997-05-28

申请号：EP91920195.4

申请日：1991-10-07

Applicant: MOTOROLA, INC.

Inventor： MITTEL, James, G. ,  DAVIS, Walter, Lee ,  FERNANDEZ, Sergio ,  PONCE DE LEON, Lorenzo, A. ,  SIWIAK, Kazimierz

IPC: H04B1/16 ,  H03D7/16 ,  H03J7/06

CPC classification number: H03J1/005 ,  H03D7/163 ,  H04B1/14

Abstract: A receiver (200) includes an automatic frequency controller that determines the frequency of a received signal (408), and calculates a frequency error (410) from the received signal. The frequency error is used to calculate a correction factor that is used to adjust the frequency (412) of an oscillator (308) in response to the determined error.

公开(公告)号：EP0920748A1

公开(公告)日：1999-06-09

申请号：EP97937206.0

申请日：1997-07-11

Applicant: MOTOROLA, INC.

Inventor： SIWIAK, Kazimierz

IPC: H04B7

CPC classification number: H04B7/208

Abstract: A satellite communication system (100) includes a satellite (102) in a predefined orbit projecting a plurality of beams (1-48) designating a coverage area (115). The satellite (102) has a communication device (200), a frequency synthesizer (222) for setting a frequency of the communication device for communicating via a beam of the plurality of beams (1-48) and a controller (216) coupled to the frequency synthesizer (222) for compensating for a Doppler frequency shift associated with the beam.

公开(公告)号：EP0739555A1

公开(公告)日：1996-10-30

申请号：EP95907370.0

申请日：1995-01-12

Applicant: MOTOROLA, INC.

Inventor： SIWIAK, Kazimierz ,  PONCE DE LEON, Lorenzo

IPC: H04B7 ,  H04L27

CPC classification number: H04B7/01 ,  H04B7/18517 ,  H04L27/2273

Abstract: A satellite receiver system (400) provides acquisition and frequency tracking of a Doppler-shifted radio signal received from an orbiting satellite. The satellite receiver system (400) includes a Costas phase-lock loop (100) that receives the radio signal and provides an error signal at an error signal output (134) for controlling a conversion frequency generated by a voltage controlled oscillator (200). The voltage controlled oscillator (200) is coupled to the Costas phase-lock loop (100) and generates the conversion frequency for down-converting the radio signal in the Costas phase-lock loop (100). The satellite receiver system (400) further includes a Doppler frequency acquisition and tracking element (300) coupled to the voltage controlled oscillator (200). The Doppler frequency acquisition and tracking element (300) adjusts the conversion frequency to compensate for a Doppler frequency shift occuring in the radio signal due to orbital motion of the orbiting satellite.

公开(公告)号：EP0398934A1

公开(公告)日：1990-11-28

申请号：EP89901929.0

申请日：1988-12-12

Applicant: MOTOROLA, INC.

Inventor： SIWIAK, Kazimierz

IPC: H01S3 ,  G08B3 ,  H04W84

CPC classification number: H04W84/025 ,  G08B3/1016 ,  G08B3/1091 ,  H01S3/094034 ,  H01S3/10092

Abstract: Le dispositif de recherche de personnes avec rétro-accusé de réception (121, 122, ...) est utilisé dans un système de recherche de personnes (100) lequel comprend une station centrale (110) qui transmet un groupe de signaux de message à un groupe de dispositifs de recherche de personnes avec rétro-accusé de réception (121, 122, ...) qui sont adressés en tant que groupe. Les utilisateurs du groupe de dispositifs de recherche de personnes adressés (121, 122, ...) indiquent une réponse à leurs dispositifs de recherche de personnes respectifs, fournissant ainsi des données de rétro-accusé de réception. Les dispositifs de recherche de personnes (121, 122, ...) dans le groupe de dispositifs de recherche de personnes avec rétro-accusé de réception adressés (121, 122, ...) transmettent en retour simultanément à la station centrale (110) leur données de rétro-accusé de réception sur des sous-bandes de fréquence différentes, une sous-bande de fréquence différente étant affectée à chacun des dispositifs de recherche de personnes (121, 122, ...) dans le groupe. L'invention concerne également un appareil permettant de commander la fréquence de la sous-bande sélectionnée avec une très grande précision.

公开(公告)号：WO1995019666A1

公开(公告)日：1995-07-20

申请号：PCT/US1995000325

申请日：1995-01-12

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  SIWIAK, Kazimierz ,  PONCE DE LEON, Lorenzo

IPC: H04B07/185

CPC classification number: H04B7/01 ,  H04B7/18517 ,  H04L27/2273

Abstract: A satellite receiver system (400) provides acquisition and frequency tracking of a Doppler-shifted radio signal received from an orbiting satellite. The satellite receiver system (400) includes a Costas phase-lock loop (100) that receives the radio signal and provides an error signal at an error signal output (134) for controlling a conversion frequency generated by a voltage controlled oscillator (200). The voltage controlled oscillator (200) is coupled to the Costas phase-lock loop (100) and generates the conversion frequency for down-converting the radio signal in the Costas phase-lock loop (100). The satellite receiver system (400) further includes a Doppler frequency acquisition and tracking element (300) coupled to the voltage controlled oscillator (200). The Doppler frequency acquisition and tracking element (300) adjusts the conversion frequency to compensate for a Doppler frequency shift occuring in the radio signal due to orbital motion of the orbiting satellite.

Abstract translation: 卫星接收机系统（400）提供从轨道卫星接收的多普勒频移无线电信号的采集和频率跟踪。 卫星接收机系统（400）包括Costas锁相环（100），其接收无线电信号并在误差信号输出（134）处提供误差信号，以控制由压控振荡器（200）产生的转换频率。 电压控制振荡器（200）耦合到科斯塔斯锁相环（100），并产生用于对科斯塔斯锁相环（100）中的无线电信号进行下变频的转换频率。 卫星接收机系统（400）还包括耦合到压控振荡器（200）的多普勒频率采集和跟踪元件（300）。 多普勒频率获取和跟踪元件（300）调整转换频率以补偿由于轨道卫星的轨道运动而在无线电信号中发生的多普勒频移。

公开(公告)号：WO1994013093A1

公开(公告)日：1994-06-09

申请号：PCT/US1993011439

申请日：1993-11-24

Applicant: MOTOROLA, INC.

Inventor： MOTOROLA, INC. ,  SIWIAK, Kazimierz ,  SCHWENDEMAN, Robert, John

IPC: H04M11/00

CPC classification number: H04W88/185 ,  H04M11/022

Abstract: A combination radio paging receiver and radio telephone (40) includes a receiver (214) for receiving paging signals provided from a paging terminal (32), a decoder (216) for decoding the paging sgnals to recover a page, and a controller (220) for determining whether the page requests an acknowledge back signal. A radio telephone section (205) couples the controller (220) to a radio telephone system (15) to form a radio telephone link with the paging terminal (32) for communicating the acknowledge back signal to the paging terminal (32) via the radio telephone link in response to determining that the page requests the acknowledge back signal (304).

Abstract translation: 组合无线寻呼接收机和无线电话机（40）包括：接收机（214），用于接收从寻呼终端（32）提供的寻呼信号;解码器（216），用于解码寻呼信号以恢复寻呼;以及控制器 ），用于确定页面是否请求确认信号。 无线电话部分（205）将控制器（220）耦合到无线电话系统（15）以形成与寻呼终端（32）的无线电话链路，用于经由无线电通知确认回信号到寻呼终端（32） 响应于确定页面请求确认信号（304）而进行电话链接。

公开(公告)号：WO1994015411A1

公开(公告)日：1994-07-07

申请号：PCT/US1993011777

申请日：1993-12-06

Applicant: MOTOROLA, INC.

Inventor： MOTOROLA, INC. ,  SIWIAK, Kazimierz ,  SCHWENDEMAN, Robert, John ,  BREEDEN Robert, Louis

IPC: H04B07/08

CPC classification number: H04B7/0811

Abstract: A method and apparatus in a data communication receiver (100) for diversity reception of a radio signal including a predictably repetitive, predetermined data bit pattern (304) comprises a processor (114) controlling (600) an antenna switch (106) to select between a first antenna feed (102) and a second antenna feed (104) as a momentary source of the radio signal during transmissions of the predetermined data bit pattern (304). The radio signal received from the momentary source is monitored by a data receiver (110) during the transmission of the predetermined bit pattern (304) to derive the data therefrom, and at least one bit error count is determined (604, 610) by the processor (114). After completion of the predetermined bit pattern (304), an antenna feed (102, 104) for the radio signal is selected (616, 620) in response to the at least one bit error count.

Abstract translation: 一种用于分集接收包括可预测的重复的预定数据位模式（304）的无线电信号的数据通信接收机（100）中的方法和装置，包括：控制（600）天线开关（106）以在 第一天线馈送（102）和第二天线馈送（104）作为在预定数据位模式（304）的传输期间的无线电信号的瞬时源。 在传输预定位模式（304）期间由数据接收器（110）监视从瞬时源接收到的无线电信号以从其导出数据，并且至少一个位错误计数被确定（604,610） 处理器（114）。 在完成预定位模式（304）之后，响应于至少一个位错误计数，选择​​用于无线电信号的天线馈送（102,104）（616,620）。