-
公开(公告)号：DE69333633T2
公开(公告)日：2005-12-01
申请号：DE69333633
申请日：1993-03-04
Applicant: QUALCOMM INC
Inventor： TIEDEMANN G , WEAVER A , KERR J , GEIB M
IPC: H04J3/16 , H04B1/16 , H04B7/26 , H04W24/00 , H04W48/08 , H04W52/02 , H04W56/00 , H04W72/04 , H04W72/12 , H04W74/04
Abstract: A system for reducing receiver power consumption in communication system having a transmitter and one or more receivers schedules periodic messages in "slots." Each receiver is assigned a slot during which it monitors the transmissions. The transmitter transmits messages to the receiver only during the assigned slots. The receiver is in an "active state" during its assigned slot. It may remain in the active state after its assigned slot if the message requires the receiver to perform additional actions. During the "inactive state," which is the time period between successive occurrences of its assigned slot, the receiver may perform any action not requiring coordination with the transmitter. It may conserve power during this time by removing power from one or more components such as those used for monitoring the transmissions. At a time during the inactive state shortly before the assigned slot, the receiver applies power to these components and performs initializations. Such initializations may include reacquiring a pilot channel signal to which the receiver may synchronize itself if its timing signals have drifted out of synchronization with those of the transmitter during the preceding inactive state.
-
Patent Agency Ranking
公开(公告)号：DE69920448D1
公开(公告)日：2004-10-28
申请号：DE69920448
申请日：1999-05-21
Applicant: QUALCOMM INC
Abstract: A method and circuit for processing switch closures in a passive network (100) having switches (S1 ... Sn). The passive network (100) generates an output voltage in response to a switch closure. The circuit comprises a comparison circuit (206), coupled to the passive network, for comparing the output voltage to a reference voltage. A decoder (212), coupled to the comparison circuit, decodes the switch closure if the output voltage is within a predetermined range, and does not decode said switch closure if the output voltage is not within the predetermined range. The circuit differentiates between input ranges in a passive network keypad which allows the proper processing of meaningful key presses, while ignoring inadvertent or superfluous key presses, thereby conserving power and processor time.
-
公开(公告)号：DE69920448T2
公开(公告)日：2005-09-22
申请号：DE69920448
申请日：1999-05-21
Applicant: QUALCOMM INC
Abstract: A method and circuit for processing switch closures in a passive network (100) having switches (S1 ... Sn). The passive network (100) generates an output voltage in response to a switch closure. The circuit comprises a comparison circuit (206), coupled to the passive network, for comparing the output voltage to a reference voltage. A decoder (212), coupled to the comparison circuit, decodes the switch closure if the output voltage is within a predetermined range, and does not decode said switch closure if the output voltage is not within the predetermined range. The circuit differentiates between input ranges in a passive network keypad which allows the proper processing of meaningful key presses, while ignoring inadvertent or superfluous key presses, thereby conserving power and processor time.
-
公开(公告)号：DE69333633D1
公开(公告)日：2004-10-28
申请号：DE69333633
申请日：1993-03-04
Applicant: QUALCOMM INC
Inventor： TIEDEMANN G , WEAVER A , KERR J , GEIB M
IPC: H04J3/16 , H04B1/16 , H04B7/26 , H04W24/00 , H04W48/08 , H04W52/02 , H04W56/00 , H04W72/04 , H04W72/12 , H04W74/04
Abstract: A system for reducing receiver power consumption in communication system having a transmitter and one or more receivers schedules periodic messages in "slots." Each receiver is assigned a slot during which it monitors the transmissions. The transmitter transmits messages to the receiver only during the assigned slots. The receiver is in an "active state" during its assigned slot. It may remain in the active state after its assigned slot if the message requires the receiver to perform additional actions. During the "inactive state," which is the time period between successive occurrences of its assigned slot, the receiver may perform any action not requiring coordination with the transmitter. It may conserve power during this time by removing power from one or more components such as those used for monitoring the transmissions. At a time during the inactive state shortly before the assigned slot, the receiver applies power to these components and performs initializations. Such initializations may include reacquiring a pilot channel signal to which the receiver may synchronize itself if its timing signals have drifted out of synchronization with those of the transmitter during the preceding inactive state.
-
公开(公告)号：DE69520812T2
公开(公告)日：2002-02-28
申请号：DE69520812
申请日：1995-02-17
Applicant: QUALCOMM INC
Inventor： WEILAND L , KORNFELD K , KERR J , MALONEY E , WILSON B
Abstract: The process and apparatus of the present invention limits the output power of a radiotelephone, operating in a cellular system in the preferred embodiment. This ensures the transmitted sidebands and synthesizer phase noise remains within a certain specification. This is accomplished by power detection and a correction accumulator that together generate a gain control signal by limiting the gain adjustment to a maximum value, even when the cell site communicating with the radiotelephone is sending power turn-up commands to the radiotelephone. This process includes dynamically correcting the output level of the transmitter due to gain variations in the transmitter stages or gain control elements.
-
公开(公告)号：DE69520812D1
公开(公告)日：2001-06-07
申请号：DE69520812
申请日：1995-02-17
Applicant: QUALCOMM INC
Inventor： WEILAND L , KORNFELD K , KERR J , MALONEY E , WILSON B
Abstract: The process and apparatus of the present invention limits the output power of a radiotelephone, operating in a cellular system in the preferred embodiment. This ensures the transmitted sidebands and synthesizer phase noise remains within a certain specification. This is accomplished by power detection and a correction accumulator that together generate a gain control signal by limiting the gain adjustment to a maximum value, even when the cell site communicating with the radiotelephone is sending power turn-up commands to the radiotelephone. This process includes dynamically correcting the output level of the transmitter due to gain variations in the transmitter stages or gain control elements.
-
-
-
-
-
Search Results
6
records
(took 0.022 seconds)
