公开(公告)号：ZA9804654B

公开(公告)日：1999-11-29

申请号：ZA9804654

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

CPC classification number: H04M1/72519 ,  H04M1/0214 ,  H04M1/0245 ,  H04M1/22 ,  H04M1/57 ,  H04M1/663 ,  H04M2250/16 ,  H04W52/027 ,  Y02D70/26

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：BR9802996A

公开(公告)日：1999-11-03

申请号：BR9802996

申请日：1998-06-02

Applicant: MOTOROLA INC

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

IPC: H04B1/38 ,  H04M1/00 ,  H04M1/02 ,  H04M1/22 ,  H04M1/57 ,  H04M1/663 ,  H04M1/725 ,  H04M1/73 ,  H04M11/00 ,  H04W52/02 ,  H04Q7/32

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：AU6601298A

公开(公告)日：1998-12-10

申请号：AU6601298

申请日：1998-05-18

Applicant: MOTOROLA INC

Inventor： JAHAGIRDAR KETAN R ,  ALBERTH WILLIAM P ,  HACKBART ROLLAND R ,  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 ,  H04M1/03 ,  H04B1/03 ,  H04B1/08

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：SE9801976D0

公开(公告)日：1998-06-04

申请号：SE9801976

申请日：1998-06-04

Applicant: MOTOROLA INC

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

IPC: H04M1/00 ,  H04B1/38 ,  H04M1/02 ,  H04M1/22 ,  H04M1/57 ,  H04M1/663 ,  H04M1/725 ,  H04M1/73 ,  H04M11/00 ,  H04W52/02 ,  H04M

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：BR9305438A

公开(公告)日：1994-08-02

申请号：BR9305438

申请日：1993-01-11

Applicant: MOTOROLA INC

Inventor： SCHWENT DALE G ,  OSMANI RASHID M ,  WEISSHAPPEL ROBERT N

IPC: H03F1/02 ,  H03F3/20 ,  H03F3/21 ,  H04B1/04 ,  H04B1/40 ,  H04B7/26

公开(公告)号：GB2253751B

公开(公告)日：1994-04-27

申请号：GB9207025

申请日：1992-03-30

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 ,  H04L7/00 ,  H03L7/00 ,  H04L25/00 ,  H04L27/00

公开(公告)号：GB2270434A

公开(公告)日：1994-03-09

申请号：GB9321474

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 ,  H03F3/24

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：GB2270433A

公开(公告)日：1994-03-09

申请号：GB9321472

申请日：1993-01-11

Applicant: MOTOROLA INC

Inventor： SCHWENT DALE G ,  OSMANI RASHID M ,  WEISSHAPPEL ROBERT N

IPC: H03F1/02 ,  H03F3/20 ,  H03F3/21 ,  H04B1/04 ,  H04B1/40 ,  H04B7/26 ,  H03F3/24

Abstract: A dual-mode RF signal nplifier combining network is comprised of two branches, each having a power amplifier (200 and 201). The first branch a non-linear mode power amplifier (200) while the second branch contains a linear mode power amplifier (201). The nor mode branch also has an RF switch (210). Both branches are coupled to a common output node (220). The common node is coupled to a filter (107) before going to an antenna (106). The non-linear mode power amplifier (200) operates when an FM signal is to be amplified, while the linear amplifier is biased in an off state. The linear mode power amplifier (201) operates when a digital signal is to be amplified, while the non-linear amplifier (200) is biased in an off state. The RF switch (210) removes the non-linear amplifier (200) from the circuit to prevent loading the on state linear amplifier (201).

公开(公告)号：CA2108461A1

公开(公告)日：1993-09-14

申请号：CA2108461

申请日：1993-01-11

Applicant: MOTOROLA INC

Inventor： SCHWENT DALE G ,  OSMANI RASHID M ,  WEISSHAPPEL ROBERT N

IPC: H03F1/02 ,  H03F3/20 ,  H03F3/21 ,  H04B1/04 ,  H04B1/40 ,  H04B7/26 ,  H04Q7/20

公开(公告)号：CA2089360A1

公开(公告)日：1993-01-23

申请号：CA2089360

申请日：1992-06-19

Applicant: MOTOROLA INC

Inventor： WILSON GREGORY P ,  LEMERSAL DONALD B JR ,  OSMANI RASHID M ,  SCHWENT DALE G ,  JOHNSON JOHN C

IPC: H03G3/20 ,  H04B1/036 ,  H04B1/04 ,  H04B1/40 ,  H04B7/005

Abstract: A transmitter (604) of a TDMA cellular telephone (600) includes power control circuitry (100) comprised of variable gain stage (104), mixer (106), bandpass filter (109), RF amplifier (110), and directional coupler (112) in a forward path, and two detectors (116 and 117), four A/D converters (118, 119, 121 and 123), digital controller (120), and D/A converter (126) in a feedback path. In operation, the variable gain stage (104) is responsive to a gain control signal AOCCNT (128) for adjusting a modulated IF signal, which is then mixed in mixer (106) with an RF reference signal to produce the transmit RF signal. The temperature and supply voltage are sampled by controller (120) at the beginning of each time slot. Adjustments in the gain control signal (128) dictated by the sampled temperature and supply voltage are made by controller (120) in each time slot prior to keying the RF amplifier (110). The transmit RF signal is amplified by the RF amplifier (110) to produce the transmit output signal which is coupled by the directional coupler (112) and transmit filter (618) to an antenna (620) for transmission. The forward power and reverse power of the transmit output signal are sampled by controller (120) at the end of each time slot. The sampled forward power is used by controller (120) in calculating the value of the gain control signal for the next time slot. If the sampled reverse power or supply voltage exceed respective maximum values, the RF amplifier (110) is dekeyed by controller (120).