公开(公告)号：CA1212999A

公开(公告)日：1986-10-21

申请号：CA384893

申请日：1981-08-31

Applicant: MOTOROLA INC

Inventor： DAVIS WALTER L ,  RAGHUNATHAN KUPPUSWAMY

IPC: G06F9/22 ,  G08B3/10 ,  H04B1/16 ,  H04B5/04 ,  H04L7/033 ,  H04L7/04 ,  H04Q1/39 ,  H04W8/24 ,  H04W88/02 ,  H04B7/00

Abstract: An battery powered, adaptive signal decoder is disclosed which is capable of processing detected encoded signals in accordance with a plurality of decoding schemes. The decoder has an equivalent microcomputer implementation. Energy conservation means operating independently of the detected signals acts to conserve the energy of the battery.

公开(公告)号：FI852293L

公开(公告)日：1985-06-07

申请号：FI852293

申请日：1985-06-07

Applicant: MOTOROLA INC

Inventor： DAVIS WALTER L ,  HEROLD BARRY W ,  LITTLE WENDELL

IPC: G06F1/00 ,  G06F1/04 ,  G06F1/08 ,  G06F1/32 ,  G06F15/78 ,  H03L7/089 ,  H03L7/107 ,  H03L7/183 ,  G06F

Abstract: A microcomputer (104) having predetermined clock pulse frequency requirements receives pulses from a multiplying type frequency synthesizer (200) which utilizes a reference frequency less than the largest of the predetermined requirements. The synthesizer (200) is responsive to program instructions to generate clock pulse frequencies sufficient to satisfy the requirement for immediate execution of programmed tasks. As the execution requirements change, the synthesizer (200) responds to provide only the frequency required. Thus, the power dissipated by the entire microcomputer system is minimized.

公开(公告)号：FI852293A0

公开(公告)日：1985-06-07

申请号：FI852293

申请日：1985-06-07

Applicant: MOTOROLA INC

Inventor： DAVIS WALTER L ,  HEROLD BARRY W ,  LITTLE WENDELL

IPC: G06F1/00 ,  G06F1/04 ,  G06F1/08 ,  G06F1/32 ,  G06F15/78 ,  H03L7/089 ,  H03L7/107 ,  H03L7/183 ,  G06F

Abstract: A microcomputer (104) having predetermined clock pulse frequency requirements receives pulses from a multiplying type frequency synthesizer (200) which utilizes a reference frequency less than the largest of the predetermined requirements. The synthesizer (200) is responsive to program instructions to generate clock pulse frequencies sufficient to satisfy the requirement for immediate execution of programmed tasks. As the execution requirements change, the synthesizer (200) responds to provide only the frequency required. Thus, the power dissipated by the entire microcomputer system is minimized.

公开(公告)号：AU2002352918A1

公开(公告)日：2003-07-09

申请号：AU2002352918

申请日：2002-11-25

Applicant: MOTOROLA INC

Inventor： JAMBHEKAR SHRIRANG ,  THOMPSON MARIA ,  BROMHAM RICHARD ,  DAVIS WALTER L ,  GARDNER ROBERT M

IPC: G01S1/68 ,  G08G1/005 ,  H04L12/28 ,  H04Q7/20

Abstract: A radio ( 10 ) communicates compatibly with a dedicated short range roadside information service and is adapted and configured to be worn by a pedestrian or otherwise mounted on or installed in a variety of nonautomotive roaming objects. Various modes of operation are supported including a beacon mode ( 50 ), a remote transmitter mode ( 60 ), a remote disable mode ( 70 ), and a location based operating mode ( 80 ).

公开(公告)号：HK57997A

公开(公告)日：1997-05-09

申请号：HK57997

申请日：1997-05-01

Applicant: MOTOROLA INC

Inventor： DAVIS WALTER L ,  LITTLE WENDELL

IPC: G08B3/10 ,  H04B5/04 ,  H04W88/02 ,  H04Q7/02

Abstract: A radio paging apparatus (100) with an LPC speech synthesizer (112). The paging apparatus of the present invention includes a controller and decoder (106), and a microprocessor controlled speech synthesizer (112) both coupled to a dual port memory (110). Digitally encoded voice messages are stored in a dual port memory (110) which includes a scratch pad area for storing control words and address pointers which indicate the attributes and location of stored digitally encoded voice messages. Messages are reconstructed by reading the control words and address pointers and processing the information stored in memory (110) with a speech synthesizer (112). The structure is adapted to store and process LPC encoded signals and it permits a message to be stored while another is being reproduced. In addition, information contained in the control words permits old or read messages to be discarded if a new message must be stored.

公开(公告)号：AU672270B2

公开(公告)日：1996-09-26

申请号：AU5677894

申请日：1993-11-24

Applicant: MOTOROLA INC

Inventor： DAVIS WALTER L

IPC: H04B7/26 ,  H04M11/00 ,  H04M11/02 ,  H04W88/18 ,  H04Q7/12

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).

公开(公告)号：CA2008879C

公开(公告)日：1994-01-04

申请号：CA2008879

申请日：1990-01-30

Applicant: MOTOROLA INC

Inventor： ERHART RICHARD A ,  DAVIS WALTER L ,  HEROLD BARRY W

IPC: G06F7/02 ,  G06F11/00 ,  G06F12/00 ,  H04W88/02 ,  G06F7/20

Abstract: An apparatus for determining if a received binary word corresponds to the true or complement version of a stored binary word includes means for serially multiplexing the bits of each binary word to the inputs of an exclusive OR gate. The exclusive OR gate generates a logical high signal each time a mismatch occurs. These signals are applied directly to an error counter and, after inversion, to a match counter. The contents of the error counter and match counter are compared to a stored threshold number. A first signal is generated if the contents of the error counter exceeds the threshold. A second signal is generated if the contents of the match counter exceeds the threshold. Upon the occurrence of both signals, the serial comparison process is terminated.

公开(公告)号：CA2004236C

公开(公告)日：1993-11-16

申请号：CA2004236

申请日：1989-11-30

Applicant: MOTOROLA INC

Inventor： GRANDFIELD WALTER J ,  MITTEL JAMES G ,  DAVIS WALTER L

IPC: H03L7/00 ,  H03B5/04 ,  H03B5/12 ,  H03B5/36 ,  H03D7/00 ,  H03D7/12 ,  H04B1/16 ,  H04B1/26

Abstract: A heterodyne stage of a receiver which includes a conventional mixer circuit and local oscillator circuit further includes a differential amplifier circuit which measures the amplitude of the injection signal generated by the local oscillator circuit and controls it precisely to a desired reference level by adjusting the current bias supply to the local oscillator circuit within a banded range to ensure start-up of the local oscillator upon energization and to protect against loss of injection signal under all operating conditions. The differential amplifier circuit provides for a precise amplitude reference setting and sufficient closed-loop gain for controlling the amplitude of the injection signal with a minimum of error between the measured and reference values.

公开(公告)号：CA2107660A1

公开(公告)日：1992-10-16

申请号：CA2107660

申请日：1992-02-26

Applicant: MOTOROLA INC

Inventor： DAVIS WALTER L ,  MACNAK PHILIP P

IPC: H04B7/185 ,  H04W84/02

公开(公告)号：CA1303677C

公开(公告)日：1992-06-16

申请号：CA587733

申请日：1989-01-09

Applicant: MOTOROLA INC

Inventor： DAVIS WALTER L

IPC: H04M1/57 ,  H04M1/658 ,  H04M1/663 ,  H04W88/18 ,  H04M1/65 ,  H04Q7/02

Abstract: An automatic telephone answering device employing an Automatic Number Identification (ANI) decoder to selectively perform operations on a telephone call is described. The device may perform such operations as to selectively not respond, end, record or forward a telephone call wherein the selection is dependent upon the ANI signal associated with the telephone call, and the operations are determined prior to the reception of the telephone call. In using the automatic answering device in a paging system, a method of selectively forwarding a telephone message to a paging device and ultimately to a pager is described, wherein the selection is dependent upon the ANI signal associated with the telephone call. Additionally, a way to selectively distribute message storage between a telephone answering machine and a pager is described.