公开(公告)号：CA1165840A

公开(公告)日：1984-04-17

申请号：CA391489

申请日：1981-12-04

Applicant: MOTOROLA INC

Inventor： JASPER STEVEN C ,  JANC ROBERT V ,  ROBINS DAVID S ,  RETZER MICHAEL H

IPC: H04B1/10 ,  C30B29/62 ,  G01R23/02 ,  G01S1/24 ,  G01S5/10 ,  G01R23/00

Abstract: An apparatus and method for determining the period and frequency of a signal interfering with a desired Loran C signal are provided. A sample of the interfering signal is generated at a time corresponding to the peak of the autocorrelation function of the interfering signal with respect to the predetermined pulse tracking reference point of the Loran C signal. Indicia of the period and frequency of the interferer is obtained from the timing of the sample generated at the autocorrelation function peak.

公开(公告)号：MX9400752A

公开(公告)日：1994-07-29

申请号：MX9400752

申请日：1994-01-28

Applicant: MOTOROLA INC

Inventor： RETZER MICHAEL H ,  MUEHLFELD ALAN D

IPC: H03G3/34 ,  H04N1/00

Abstract: A wireless communications receiver having an adaptive squelch system and operable in multiple states including a receiver (11) that provides a received signal when operating in a clear (unscrambled) state and when operating in a secure (scrambled) state; a squelch function (13) that generates an unsquelch signal when the received signal satisfies a quality level; and a controller (15) that sets the quality level to a predetermined level that corresponds to the receiver operating state.

公开(公告)号：AU6022794A

公开(公告)日：1994-08-15

申请号：AU6022794

申请日：1994-01-06

Applicant: MOTOROLA INC

Inventor： RETZER MICHAEL H ,  MUEHLFELD ALAN D

IPC: H03G3/34 ,  H04B1/10

Abstract: A wireless communications receiver having an adaptive squelch system and operable in multiple states including a receiver (11) that provides a received signal when operating in a clear (unscrambled) state and when operating in a secure (scrambled) state; a squelch function (13) that generates an unsquelch signal when the received signal satisfies a quality level; and a controller (15) that sets the quality level to a predetermined level that corresponds to the receiver operating state.

公开(公告)号：CA1165841A

公开(公告)日：1984-04-17

申请号：CA391505

申请日：1981-12-04

Applicant: MOTOROLA INC

Inventor： JASPER STEVEN C ,  JANC ROBERT V ,  ROBINS DAVID S ,  RETZER MICHAEL H

IPC: H04B1/10 ,  G01S1/24 ,  G01S5/10 ,  H04B1/12

Abstract: A method and apparatus for attenuating an interfering signal corrupting a desired Loran C signal is provided. An interfering signal sample is determined which occurs at the peak of the autocorrelation function of the interfering signal such that the period of the interferer is known. The sample occurring at the peak of the autocorrelation function is added to or subtracted from the desired Loran C signal sample taken at a predetermined reference point during the pulses thereof such that the interfering signal is cancelled or substantially attenuated.

公开(公告)号：MY110498A

公开(公告)日：1998-06-30

申请号：MYPI19940053

申请日：1994-01-08

Applicant: MOTOROLA INC

Inventor： RETZER MICHAEL H ,  MUEHLFELD ALAN D

IPC: H04B1/10 ,  H03G3/34

Abstract: A WIRELESS COMMUNICATIONS RECEIVER HAVING AN ADAPTIVE SQUELCH SYSTEM AND OPERABLE IN MULTIPLE STATES INCLUDING A RECEIVER (11) THAT PROVIDES A RECEIVED SIGNAL WHEN OPERATING IN A CLEAR (UNSCRAMBLED) STATE AND WHEN OPERATING IN A SECURE (SCRAMBLED) STATE; A SQUELCH FUNCTION (13) THAT GENERATES AN UN-SQUELCH SIGNAL WHEN THE RECEIVED SIGNAL SATISFIES A QUALITY LEVEL; AND A CONTROLLER (15) THAT SETS THE QUALITY LEVEL TO A PREDETERMINED LEVEL THAT CORRESPONDS TO THE RECEIVER OPERATING STATE. (FIG. 1)

公开(公告)号：AU2279095A

公开(公告)日：1996-01-04

申请号：AU2279095

申请日：1995-04-05

Applicant: MOTOROLA INC

Inventor： MOSS BARRY ,  BEAUDOIN DENIS ,  RETZER MICHAEL H

IPC: H04L12/28 ,  H04L29/06 ,  H04M11/06 ,  H01J13/00 ,  H04M11/00 ,  B31B1/62 ,  H04B10/00

Abstract: A dual function interface operating in a Personal Computer Memory Card International Association (PCMCIA) mode of operation switches to an alternative interface operating in the appropriate mode of operation as defined by the alternative interface system specification. This is accomplished by setting a unique combination of address lines (203) and/or control lines (202) and automatically and transparently switching from the PCMCIA mode of operation to the alternate mode operation in response to the unique combination.

公开(公告)号：WO2005076817A3

公开(公告)日：2006-04-27

申请号：PCT/US2005002447

申请日：2005-01-27

Applicant: MOTOROLA INC ,  PHILLIPS JOSEPH E ,  DERANGO MARIO F ,  EKL RANDY L ,  RETZER MICHAEL H

Inventor： PHILLIPS JOSEPH E ,  DERANGO MARIO F ,  EKL RANDY L ,  RETZER MICHAEL H

IPC: H04J3/24 ,  H04L12/28 ,  H04L12/56

CPC classification number: H04W4/06 ,  H04W72/005 ,  H04W88/08

Abstract: In one embodiment of the present invention, an access point (111) receives a multicast packet intended for a particular multicast group. Upon receipt, the access point only rebroadcast the multicast packet over a wireless segment if it determines that there is at least one wireless subscriber unit (131) belonging to the particular multicast group and associated with the access point that did not originate the multicast packet. Optionally, if the multicast packet signals an automatic rebroadcast of the multicast packet over the wireless segment, the access point automatically rebroadcasts the multicast packet without determining whether there is at least one wireless subscriber unit belonging to the particular multicast group and associated with the access point that did not originate the multicast packet. (See figure 1)

Abstract translation: 在本发明的一个实施例中，接入点（111）接收用于特定多播组的组播分组。 在接收到接收点时，如果它确定属于特定多播组并且与不是始发多播分组的接入点相关联的至少一个无线用户单元（131），则接入点仅在无线段上重播广播分组。 可选地，如果组播分组通过无线分段发信号通知多播分组的自动转播，接入点将自动重播广播分组而不确定是否存在属于特定多播组并与接入点相关联的至少一个无线用户单元 这不是源于组播数据包。 （见图1）

公开(公告)号：WO2005076817B1

公开(公告)日：2006-07-20

申请号：PCT/US2005002447

申请日：2005-01-27

Applicant: WARE MOTOROLA INC A CORP OF TH ,  PHILLIPS JOSEPH E ,  DERANGO MARIO F ,  EKL RANDY L ,  RETZER MICHAEL H

Inventor： PHILLIPS JOSEPH E ,  DERANGO MARIO F ,  EKL RANDY L ,  RETZER MICHAEL H

IPC: H04J3/24 ,  H04L12/28 ,  H04L12/56

CPC classification number: H04W4/06 ,  H04W72/005 ,  H04W88/08

Abstract: In one embodiment of the present invention, an access point (111) receives a multicast packet intended for a particular multicast group. Upon receipt, the access point only rebroadcast the multicast packet over a wireless segment if it determines that there is at least one wireless subscriber unit (131) belonging to the particular multicast group and associated with the access point that did not originate the multicast packet. Optionally, if the multicast packet signals an automatic rebroadcast of the multicast packet over the wireless segment, the access point automatically rebroadcasts the multicast packet without determining whether there is at least one wireless subscriber unit belonging to the particular multicast group and associated with the access point that did not originate the multicast packet.

Abstract translation: 在本发明的一个实施例中，接入点（111）接收用于特定多播组的组播分组。 在接收到接收点时，如果它确定属于特定多播组并且与不是始发多播分组的接入点相关联的至少一个无线用户单元（131），则接入点仅在无线段上重播广播分组。 可选地，如果组播分组通过无线分段发信号通知多播分组的自动转播，接入点将自动重播广播分组而不确定是否存在属于特定多播组并与接入点相关联的至少一个无线用户单元 这不是源于组播数据包。