-
公开(公告)号：GB2253751A
公开(公告)日：1992-09-16
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
Abstract: A frequency control system (126) for locking the frequency of a receiver, such as a receiver portion of a transceiver, to the frequency of a transmitter, such as a base station. The frequency control system (126) is operable to determine a center, or other reference, frequency of a signal, either a conventional analog signal, or discrete, encoded signal. The frequency control system may be advantageously embodied in a dual-mode radiotelephone operable to receive both conventional, analog signals and discrete, encoded signals.
-
公开(公告)号：AU8307691A
公开(公告)日：1992-03-17
申请号：AU8307691
申请日：1991-07-18
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：FI115814B
公开(公告)日：2005-07-15
申请号：FI981264
申请日：1998-06-03
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
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：FR2764455A1
公开(公告)日：1998-12-11
申请号：FR9806760
申请日：1998-05-28
Applicant: MOTOROLA INC
Inventor： JAHAGIRDAR KETAN R , ALBERTH WILLIAM PAUL JR , 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 , H04Q7/20
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：PL326648A1
公开(公告)日：1998-12-07
申请号：PL32664898
申请日：1998-06-03
Applicant: MOTOROLA INC
Inventor： JAHAGIRDAR KETAN R , ALBERTH WILLIAM P , HACKBART ROLLAND R , OSMANI RASHID M , CAHILL STEPHEN V
IPC: H04M1/00 , H04M1/02 , H04B1/38 , H04M1/22 , H04M1/57 , H04M1/663 , H04M1/725 , H04M1/73 , H04M11/00 , H04W52/02 , H04Q7/22
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.
-
Patent Agency Ranking
公开(公告)号：FI981264A
公开(公告)日：1998-12-06
申请号：FI981264
申请日：1998-06-03
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 , 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：CA2089360C
公开(公告)日：1997-09-16
申请号：CA2089360
申请日：1992-06-19
Applicant: MOTOROLA INC
Inventor： SCHWENT DALE G , WILSON GREGORY P , LEMERSAL DONALD B JR , OSMANI RASHID M , JOHNSON JOHN C
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).
-
公开(公告)号：FR2744319A1
公开(公告)日：1997-08-01
申请号：FR9700781
申请日：1997-01-24
Applicant: MOTOROLA INC
Inventor： OSMANI RASHID M , METROKA MICHAEL P
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).
-
公开(公告)号：DE4191766T1
公开(公告)日：1997-07-31
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
-
公开(公告)号：FR2666709B1
公开(公告)日：1995-05-05
申请号：FR9110585
申请日：1991-08-23
Applicant: MOTOROLA INC
Inventor： RICH RANDALL W , OSMANI RASHID M , WALCZAK THOMAS J , CAHILL STEVEN V
-
-
-
-
-
-
-
-
-
Search Results
55
records
(took 0.023 seconds)
