公开(公告)号：ZA984654B

公开(公告)日：1999-11-29

申请号：ZA984654

申请日：1998-05-29

Applicant: MOTOROLA INC

Inventor： JAHAGIRDAR KETAN R ,  ALBERTH WILLIAM P ,  HACKBART ROLLAND R ,  OSMANI RASHID M ,  CAHILL STEPHEN V

IPC: H04M1/00 ,  H04M1/02 ,  H04M1/22 ,  H04M1/57 ,  H04M1/663 ,  H04M1/725 ,  H04B1/38 ,  H04M1/73 ,  H04M11/00 ,  H04W52/02 ,  H04L ,  H04M ,  H04Q ,  H04B ,  G08B ,  G06F

Abstract: A portable communication device (102) includes a housing (105), a first display area (130), and a second display area (132). The first display area (130) is disposed in and outwardly directed from a front (120) of the housing (105), and the second display area (132) is disposed in and outwardly directed from a side (122) of the housing (105). The housing (105) may include a housing portion (114) movable to an open position and a closed position, where the second display area (132) is covered by the housing portion (114) when positioned in one of the first and the second positions.

公开(公告)号：DE4191766C2

公开(公告)日：1999-08-19

申请号：DE4191766

申请日：1991-07-11

Applicant: MOTOROLA INC

Inventor： RICH RANDALL W ,  OSMANI RASHID M ,  WALCZAK THOMAS J ,  CAHILL STEPHEN V

IPC: H03J7/06 ,  H04B1/40 ,  H04L27/227 ,  H04Q7/22 ,  H04Q7/24 ,  H04Q7/26 ,  H04Q7/30 ,  H04Q7/36 ,  H04Q7/38 ,  H03L7/00 ,  H04L27/00 ,  H04L29/00

公开(公告)号：DE19823882A1

公开(公告)日：1998-12-10

申请号：DE19823882

申请日：1998-05-28

Applicant: MOTOROLA INC

Inventor： JAHAGIRDAR KETAN R ,  ALBERTH WILLIAM P JUN ,  HACKBART ROLAND ,  OSMANI RASHID M ,  CAHILL STEPHEN V

IPC: H04B1/38 ,  H04M1/00 ,  H04M1/02 ,  H04M1/22 ,  H04M1/57 ,  H04M1/663 ,  H04M1/725 ,  H04M1/73 ,  H04M11/00 ,  H04W52/02 ,  H05K5/02

Abstract: A portable communication device (102) includes a housing (105), a first display area (130), and a second display area (132). The first display area (130) is disposed in and outwardly directed from a front (120) of the housing (105), and the second display area (132) is disposed in and outwardly directed from a side (122) of the housing (105). The housing (105) may include a housing portion (114) movable to an open position and a closed position, where the second display area (132) is covered by the housing portion (114) when positioned in one of the first and the second positions.

公开(公告)号：HK25697A

公开(公告)日：1997-03-06

申请号：HK25697

申请日：1997-03-06

Applicant: MOTOROLA INC

Inventor： RICH RANDALL W ,  OSMANI RASHID M ,  WALCZAK THOMAS J ,  CAHILL STEPHEN V

IPC: H04B1/16 ,  H03G3/20 ,  H04L27/14 ,  H04L27/152 ,  H04L27/22

公开(公告)号：CA2043413C

公开(公告)日：1994-05-10

申请号：CA2043413

申请日：1991-05-28

Applicant: MOTOROLA INC

Inventor： SCHWENT DALE G ,  OSMANI RASHID M ,  CRISTIANO GARY M

IPC: H03F3/72 ,  H04B1/04 ,  H03G7/06 ,  H03F3/19

Abstract: DUAL MODE POWER AMPLIFIER FOR RADIOTELEPHONE A dual mode power amplifier operable in either the linear mode or the saturation mode. The power amplifier, when comprising a portion of a radio transmitter, permits efficient amplification of either a frequency modulated or a composite modulated signal by operation of the amplifier in the saturation mode or the linear mode, respectively. A processor determines the modulation-type of the signal and generates a signal to cause operation of the amplifier in either the saturation mode or the linear mode.

公开(公告)号：MX173696B

公开(公告)日：1994-03-22

申请号：MX9100764

申请日：1991-08-21

Applicant: MOTOROLA INC

Inventor： CAHILL STEVEN V ,  RICH RANDALL W ,  OSMANI RASHID M ,  WALCZAR THOMAS J

IPC: H04B1/16 ,  H03G3/20 ,  H04L27/14 ,  H04L27/152 ,  H04L27/22 ,  H04B1/38 ,  G05F3/00

公开(公告)号：CA2109410A1

公开(公告)日：1993-09-14

申请号：CA2109410

申请日：1993-01-11

Applicant: MOTOROLA INC

Inventor： SCHWENT DALE G ,  OSMANI RASHID M ,  CRISTIANO GARY M

IPC: H03G3/10 ,  H03F3/04 ,  H03G3/00 ,  H03G3/20 ,  H03G3/30

Abstract: The dual mode power amplifier apparatus of the present invention is comprised of a number of power amplifiers (101-103) coupled to a voltage convertor (104) through their collector supply lines. A mode select line (105) is connected to the voltage convertor (104) to select a digital or analog mode. The preferred embodiment of the present invention is used in a hybrid digital/analog radiotelephone. In the digital mode, the voltage convertor (104) is turned off and the voltage convertor (104) supply voltage is allowed through to the collectors of the power amplifiers (101-103). This permits the power amplifiers (101-103) to operate with optimum linearity in a digital transmission environment. In an analog environment, the voltage convertor (104) is on and supplying a reduced voltage to the power amplifiers (101-103) allowing more efficient operation in this mode.

公开(公告)号：MX9301367A

公开(公告)日：1993-09-01

申请号：MX9301367

申请日：1993-03-12

Applicant: MOTOROLA INC

Inventor： SCHWENT DALE G ,  OSMANI RASHID M ,  CRISTIANO GARY M

IPC: H03F3/04 ,  H03G3/10 ,  H03G3/00 ,  H03G3/20 ,  H03G3/30 ,  H02G7/00

Abstract: The dual mode power amplifier apparatus of the present invention is comprised of a number of power amplifiers (101-103) coupled to a voltage convertor (104) through their collector supply lines. A mode select line (105) is connected to the voltage convertor (104) to select a digital or analog mode. The preferred embodiment of the present invention is used in a hybrid digital/analog radiotelephone. In the digital mode, the voltage convertor (104) is turned off and the voltage convertor (104) supply voltage is allowed through to the collectors of the power amplifiers (101-103). This permits the power amplifiers (101-103) to operate with optimum linearity in a digital transmission environment. In an analog environment, the voltage convertor (104) is on and supplying a reduced voltage to the power amplifiers (101-103) allowing more efficient operation in this mode.

公开(公告)号：CA2084990A1

公开(公告)日：1992-11-04

申请号：CA2084990

申请日：1992-04-08

Applicant: MOTOROLA INC

Inventor： RICH RANDALL W ,  SCHWENT DALE G ,  OSMANI RASHID M

IPC: C07C29/09 ,  C07C29/86 ,  C07C31/20 ,  C07C31/22 ,  C07C31/27 ,  C07C45/50 ,  C07C45/81 ,  C07C45/85 ,  C07C47/02 ,  H01P1/205 ,  H01P5/18 ,  H03G3/20 ,  H04B1/04 ,  H04B1/38 ,  H04B1/40 ,  H04Q7/38

Abstract: A cellular telephone transmitter (100) includes a variable-gain power amplifier (102), the output of which is filtered and sampled by a filter (104) with an integral directional coupler. Filter (104) includes both a transmitter signal filter and a directional coupler on a ceramic block of one or more pieces. The directional coupler has been realized by two coupled transmission lines provided by the two holes (206 and 207) on the left side of the ceramic block, and the transmitter filter has been realized by five short-circuited coupled transmission lines provided by the five holes (201-205) on the right side of the ceramic block.

公开(公告)号：FR2744319B1

公开(公告)日：2000-08-04

申请号：FR9700781

申请日：1997-01-24

Applicant: MOTOROLA INC

Inventor： OSMANI RASHID M ,  METROKA MICHAEL P

IPC: H04M15/00 ,  H04M17/00 ,  H04W12/06 ,  H04Q7/32

Abstract: A disposable portable radiotelephone subscriber unit (101) comprises a power supply (255), a transceiver (205, 207) and a controller (215). The power supply (255) has stored therein a predetermined measure of power capacity (281). The transceiver (205, 207) is permitted to operate for a predetermined period of time (405) responsive to the predetermined measure of the power capacity (281). The controller (215) monitors a rate of depletion of the predetermined measure of the power capacity (281). The controller (215) permits operation of the transceiver (205, 207) when the power capacity (281) is being depleted at a desirable rate, thereby decreasing the predetermined period of time (405) that the transceiver (205, 207) is permitted to operate. The controller (215) prevents operation of the transceiver (205, 207) when the power capacity (281) is being depleted at an undesirable rate, thereby prolonging the predetermined period of time (405) that the transceiver (205, 207) is permitted to operate. Alternatively, the power supply (255) may be a memory unit (259) and the power capacity (281) may be calling time (279) or a future electronic date (275).