公开(公告)号：WO1989006472A1

公开(公告)日：1989-07-13

申请号：PCT/US1988004345

申请日：1988-12-07

Applicant: MOTOROLA, INC.

Inventor： MOTOROLA, INC. ,  SIWIAK, Kazimierz ,  JASINSKI, Leon ,  STEEL, Francis, R. (deceased)

IPC: H04Q01/30

CPC classification number: H04W84/025

Abstract: An acknowledge back (ack-back) pager (121, 122, ...) is provided for receiving paging signals from a central paging station (110). The pagers (121, 122, ...) in the group of addressed ack-back pagers then simultaneously transmit back to the central station (110) their ack-back data on different frequency sub-bands, a different frequency sub-band being dynamically allocated to each of the pagers (121, 122, ...) in the group. Each ack-back pager (121, 122, ...) determines whether the paging signals received thereby exhibit a signal level less than a predetermined threshold level. If the paging signals received by a particular ack-back pager exhibit a signal level less than such predetermined threshold level, then the pager (121, 122, ...) transmits back to the central station at a first output power level. Otherwise, the pager (121, 122, ...) transmits at a second output power level substantially less than the first output power level.

Abstract translation: 提供了一个确认回叫（ack-back）寻呼机，用于从中央呼叫台接收寻呼信号。 中央寻呼台将一组消息信号发送到作为一组寻址的一组回信寻呼机。 所寻址的回拨寻呼机组的用户指示对其各自的寻呼机的响应，从而提供回复数据。 所寻址的回拨寻呼机组中的寻呼机然后同时将不同频率子带上的回复数据发送回中心站，不同的频率子带被动态地分配给组中的每个寻呼机。 每个回信寻呼机确定由此接收的寻呼信号是否表现出小于预定阈值电平的信号电平。 如果由特定的后置寻呼机接收的寻呼信号表现出小于该预定阈值电平的信号电平，则寻呼机以第一输出功率电平返回到中央电台。 否则，寻呼机以基本上小于第一输出功率电平的第二输出功率电平发送。 以这种方式，来自特定寻呼机的回复信号在中心站如此强大以及掩蔽其它同时响应信号的问题基本上得到改善。

公开(公告)号：WO1989006410A1

公开(公告)日：1989-07-13

申请号：PCT/US1988004398

申请日：1988-12-12

Applicant: MOTOROLA, INC.

Inventor： MOTOROLA, INC. ,  SIWIAK, Kazimierz ,  KEBA, James, M. ,  STEEL, Francis, Robert (deceased)

IPC: G08B05/22

CPC classification number: H04W84/025 ,  B63B21/48 ,  G08B3/1016 ,  H04L1/1829

Abstract: An acknowledge back (ack-back) pager is provided for use in a paging system (100) including 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 (121, 122, ...) indicate a response to their respective pagers thus providing ack-back data. The pagers (121, 122, ...) in the group of addressed ack-back pagers then simultaneously transmit back to the central section (110) their ack-back data on different respective frequency sub-bands. To accurately control the ack-back transmit frequency each pager (121, 122, ...) receives and down-converts the FRX signal, selects a frequency sub-band within a predetermined range of frequencies, determines a frequency offset FD corresponding to the selected sub-band, and generates an acknowledge back signal and up-converts such signal to a transmit frequency FTX.

公开(公告)号：WO1989006409A1

公开(公告)日：1989-07-13

申请号：PCT/US1988004397

申请日：1988-12-12

Applicant: MOTOROLA, INC.

Inventor： MOTOROLA, INC. ,  SIWIAK, Kazimierz

IPC: G08B05/22

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

Abstract: An acknowledge back (ack-back) pager (121, 122, ...) is provided for use in a paging system (100) 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 (121, 122, ...) indicate a response to their respective pagers thus providing ack-back data. The pagers (121, 122, ...) in the group of addressed ack-back pagers (121, 122, ...) then simultaneously transmit back to the central station (110) their ack-back data on different frequency sub-bands, a different frequency sub-band being allocated to each of the pagers, (121, 122, ...) in the group. The invention provides apparatus for controlling the frequency of the selected sub-band with very high accuracy.

公开(公告)号：EP0738442B1

公开(公告)日：1999-03-24

申请号：EP92914890.6

申请日：1992-06-29

Applicant: MOTOROLA, INC.

Inventor： SIWIAK, Kazimierz ,  LEITCH, Clifford, D. ,  SCHWENDEMAN, Robert, J.

IPC: H04B7/00 ,  H04B1/16 ,  H04Q7/14

CPC classification number: H04B1/1615 ,  H04W8/245 ,  H04W52/0274 ,  H04W88/022 ,  Y02D70/40

Abstract: A dual mode communication receiver a receiver for receiving information transmitted in a first and second modulation format on a common channel, a first demodulator for detecting information transmitted in the first modulation format, and a second demodulator, responsive to the information detected in the first modulation format, for detecting information transmitted in the second modulation format. A power conservation circuit is also provided for selectively supplying power to the first and second demodulators for enabling the detecting of the information transmitted in the first modulation format and the second modulation format, respectively.

Abstract translation: 一种双模式通信接收机，用于接收在公共信道上以第一和第二调制格式发送的信息，用于检测以第一调制格式发送的信息的第一解调器和第二解调器，响应于在第一调制中检测到的信息 格式，用于检测以第二调制格式发送的信息。 还提供一种省电电路，用于选择性地向第一和第二解调器供电，以便分别检测以第一调制格式和第二调制格式发送的信息。

公开(公告)号：EP0882337A1

公开(公告)日：1998-12-09

申请号：EP96903454.0

申请日：1996-01-11

Applicant: MOTOROLA, INC.

Inventor： SIWIAK, Kazimierz ,  SATYAMURTI, Sunil ,  KUZNICKI, William, Joseph

IPC: H04H1 ,  H04Q7 ,  G10L21 ,  H04H20 ,  H04K1 ,  H04L27 ,  H04B1

CPC classification number: H04L27/34 ,  H04B1/406

Abstract: A modulation scheme (600) useful in a voice paging system in which both of two orthogonal modulation components (500 and 510) are used to carry two halves of a single voice message destined for a receiver, or two separate voice messages for a receiver. The single voice message is transmitted in half the time.

公开(公告)号：EP0394357B1

公开(公告)日：1995-09-06

申请号：EP89901806.3

申请日：1988-12-12

Applicant: MOTOROLA, INC.

Inventor： SIWIAK, Kazimierz ,  KEBA, James, M. ,  Steel, Francis Robert

IPC: G08B5/22

CPC classification number: H04W84/025 ,  B63B21/48 ,  G08B3/1016 ,  H04L1/1829

Abstract: An acknowledge back (ack-back) pager is provided for use in a paging system (100) including 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 (121, 122, ...) indicate a response to their respective pagers thus providing ack-back data. The pagers (121, 122, ...) in the group of addressed ack-back pagers then simultaneously transmit back to the central section (110) their ack-back data on different respective frequency sub-bands. To accurately control the ack-back transmit frequency each pager (121, 122, ...) receives and down-converts the FRX signal, selects a frequency sub-band within a predetermined range of frequencies, determines a frequency offset FD corresponding to the selected sub-band, and generates an acknowledge back signal and up-converts such signal to a transmit frequency FTX.

公开(公告)号：EP0394357A1

公开(公告)日：1990-10-31

申请号：EP89901806.0

申请日：1988-12-12

Applicant: MOTOROLA, INC.

Inventor： SIWIAK, Kazimierz ,  KEBA, James, M.

IPC: G08B5 ,  B63B21 ,  G08B3 ,  H04L1 ,  H04W84

CPC classification number: H04W84/025 ,  B63B21/48 ,  G08B3/1016 ,  H04L1/1829

Abstract: Dispositif de recherche de personnes à rétro-accusé de réception (ack-back) utilisé dans un système de recherche de personnes (100) comprenant une station centrale (110) qui transmet un groupe de signaux de message à un groupe de dispositifs de recherche de personnes à rétro-accusé de réception (121, 122, ...) qui sont adressés en tant que groupe. Les utilisateurs du groupe de dispositifs de recherche de personnes à rétro-accusé de réception adressés (121, 122, ...) indiquent une réponse à leurs dispositifs de recherche de personnes respectifs, produisant ainsi des données de rétro-accusé de réception. Les dispositifs de recherche de personnes (121, 122, ...) du groupe de dispositifs de recherche de personnes à rétro-accusé de réception adressés rétrotransmettent simultanément à la station centrale (110) leurs données de rétro-accusé de réception sur des sous-bandes de fréquence respectives différentes. Pour commander de manière précise la fréquence de transmission à rétro-accusé de réception, chaque dispositif de recherche de personnes (121, 122, ...) reçoit et convertit à la baisse le signal FRX, sélectionne une sous-bande de fréquence dans une plage prédéterminée de fréquence, détermine un décalage de fréquence FD correspondant à la sous-bande sélectionnée, et produit un signal de rétro-accusé de réception et convertit à la hausse un tel signal en une fréquence de transmission FTX.

公开(公告)号：EP0398934B1

公开(公告)日：1995-06-21

申请号：EP89901929.3

申请日：1988-12-12

Applicant: MOTOROLA, INC.

Inventor： SIWIAK, Kazimierz

IPC: G08B5/22

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

Abstract: An acknowledge back (ack-back) pager (121, 122, ...) is provided for use in a paging system (100) 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 (121, 122, ...) indicate a response to their respective pagers thus providing ack-back data. The pagers (121, 122, ...) in the group of addressed ack-back pagers (121, 122, ...) then simultaneously transmit back to the central station (110) their ack-back data on different frequency sub-bands, a different frequency sub-band being allocated to each of the pagers, (121, 122, ...) in the group. The invention provides apparatus for controlling the frequency of the selected sub-band with very high accuracy.

公开(公告)号：EP0398926B1

公开(公告)日：1995-05-10

申请号：EP89901829.5

申请日：1988-12-13

Applicant: MOTOROLA, INC.

Inventor： SIWIAK, Kazimierz ,  JASINSKI, Leon ,  STEEL, Francis, Robert

IPC: H04Q7/00

CPC classification number: H04W84/025

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 (121, 122, ...) then simultaneously transmit back to the central station (110) their ack-back data on different frequency subbands, a different frequency sub-band being allocated to each of the pagers (121, 122, ...) in the group.

公开(公告)号：EP0556269A1

公开(公告)日：1993-08-25

申请号：EP91920195.0

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 ,  H03D7 ,  H03J1 ,  H04B5

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

Abstract: Récepteur (200) comprenant une commande automatique de la fréquence qui détermine la fréquence d'un signal reçu (408) et qui calcule une erreur de fréquence (410) à partir du signal reçu. L'erreur de fréquence est utilisée pour calculer un facteur de correction dont on se sert pour régler la fréquence (412) d'un oscillateur (308) en réponse à une erreur déterminée.