Motorola Corporation

General Instrument Corporation

Motorola Mobility LLC

Robert G Uskali

Patrick D Smith

Roger William Ady

David B Bell

Peter A Kindinger

William C Hart, Jr

Michael Jaimie Cooper

Wilson D Pace

Brian Iehl

David M Meyers

James C Knutsen

Clinton D Luckinbill

A method and apparatus for automated correlation of digital modulation impairment is described. The technique obtains soft decision data () and extracts signal space location information of sufficient resolution to distinguish different types of impairment to a digitally modulated signal. The technique applies an error vector magnitude mask () and determines the signal-to-noise ratio of the digitally modulated signal. The technique applies impairment masks () and provides a characterization () of impairment affecting the digitally modulated signal (). The technique determines a subset of the soft decision data () that falls within the impairment masks () and calculates correlation weights (). The technique may be used to identify, isolate, and classify different types of impairment. Given sufficient data collection, sources of impairments may be determined precisely.

Method and apparatus for automated correlation of digital modulation impairment

A method and apparatus for quality of service localization within a relatively time-invariant communications network, the method comprising the steps of: receiving quality of service estimations for a plurality of communications mediums, wherein each of the plurality of communications mediums is defined between a respective one of a plurality of transmitters located within the communications network to a common receiving point of the communications network, wherein each communications medium is conveyed over at least one shared physical communications path and at least one non-shared communications path; and comparing the quality of service estimations for the plurality of communications mediums with one another in order to localize a respective quality of service estimation to a likely physical communication path within the communications network.

Network quality of service localizer

In a channelized system having a plurality of channels, an input spectrum having a plurality of signals is received by a receiver ( ). A first attenuation value (V ) is applied to a first variable gain device ( ) and a second attenuation value (V ) is applied to a second variable gain device ( ), wherein the first variable gain device ( ) and the second variable gain device ( ) are within a common signal path. The receiver ( ) is tuned to a desired channel and a first power level is measured within the desired channel. The receiver ( ) is selectively tuned to at least one additional channel and a second power level within the at least one additional channel is measured, independent of the first power level. Based on measuring the power levels, a first modified attenuation value is applied to the first variable gain device ( ) and a second modified attenuation value is applied to the second variable gain device ( ).

Method and apparatus for obtaining optimal performance in a receiver

A method and apparatus for reducing power consumption in a network device ( ) is provided. A network device ( ) is placed in a quiescent mode and scheduled to switch to an active mode at a scheduled time. At the scheduled time, the network device ( ) is activated. A control message ( ) is received by the network device ( ). The control message ( ) includes an indication as to whether or not the network device ( ) should remain in the active mode in preparation of receiving a data message ( ). If the control message ( ) indicates that the network device ( ) need not remain in the active mode, the network device ( ) sets a new scheduled time and returns to the quiescent mode. However if the control message ( ) indicates that the network device ( ) should remain in the active mode in preparation of receiving a data message ( ), the network device ( ) remains in the active mode and receives the data message ( ). After the data message ( ) has been received, the network device ( ) returns to the quiescent mode. Thus, power consumption in the network device ( ) is reduced.

Method and apparatus for reducing power consumption in a network device

The present invention is a method and system for extracting information from a received signal with minimal loss due to noise. The system comprises of a transformer, for correlating the received signal to a wavelet function and producing wavelet decomposition coefficients, and a threshold circuit, which is responsive to the received signal, for applying predetermined threshold values based on the type of signal. Also included in the system is a filter, coupled to the transformer and threshold circuit, for altering the wavelet decomposition coefficients produced by the transformer using threshold values applied by the threshold circuit to produce altered wavelet coefficients from which the received signal is reconstructed with reduced noise.

Adaptive threshold algorithm for real-time wavelet de-noising applications

An apparatus ( ) for automatically adjusting the viewing angle of a liquid crystal display (LCD) ( ) is provided. The apparatus ( ) includes a controller ( ), an LCD driver ( ), a memory ( ), and a user interface ( ). The apparatus ( ) is software enabled to perform a screen flip function while concurrently adjusting the viewing angle to correspond to the new screen orientation. The viewing angle is automatically adjusted without user intervention. The apparatus ( ) has particular value where the keypads ( ) are located on only one side of its display ( ). In this manner, the apparatus ( ) can be conveniently used by both left-handed and right-handed users.

Method and apparatus for automatic viewing angle adjustment for liquid crystal display

A method, and apparatus for performing the method, the method consists of the steps of: estimating a time when a dominant channel distortion occurs for each of a plurality of received test signals, wherein each of the plurality of received test signals occupies a different position in frequency in a communications medium having a given bandwidth; determining a differential group delay for the times estimated for each of the plurality of received test signals; and approximating a phase distortion of the communications medium as the differential group delay. In a variation, the method further consists of the steps of: estimating a power of each of the plurality of received test signals; determining an amplitude ripple by evaluating the power of each of the plurality of received test signals; and approximating an amplitude distortion of the communications medium as the amplitude ripple.

Sliced bandwidth distortion prediction

An electronic device such as a personal digital assistant (PDA), a data terminal, a computer (particularly a portable computer) or a television (particularly a portable television), having a display (10) and a display driver (20). An ambient radiation sensor element (12) senses ambient radiation incident on the display; and an ambient radiation modulation measuring element (104) measures a frequency of modulation of ambient radiation sensed by the ambient modulation sensor element (12) The display driver (20) provides a display scanning signal to the display (10) at a frame rate synchronized to the modulation frequency of the ambient radiation.

Electronic device with display and display driver and method of

A data terminal, such as a personal digital assistant, personal computer, pager or other such device has a persistent memory (11), a non-persistent memory (12) including a memory item (15 or 16) and an indicator (17 or 18) indicating whether the memory item has been stored in the persistent memory. The data terminal has a power supply (29), a power fail detector (50) for detecting an imminent power failure in the power supply and a switching element (34) coupling the non-persistent memory (12) to the power supply. The switching element causes the power supply to supply power to the non-persistent memory when the indicator indicates that the second memory item has not been stored in the persistent memory and discontinues supply of power to the non-persistent memory when the power fail detector detects an imminent power failure and the indicator indicates that the second memory item has been stored in the persistent memory.

Data terminal and method of protecting memory items stored in

A battery-status-indicating apparatus and arrangement for use-with electronic equipment (100) provides an operator with a displayed indication of remaining battery capacity. A removable battery pack (35) contains memory (37) for storing battery identification information, battery capacity information and a time stamp signal. Electronic circuitry (100), powered by the battery pack (35), maintains current time information and generates the time stamp signal for delivery to said removable battery (35). In addition, the electronic circuitry (100) comprises memory (30) for storing circuit module current draw signals (I.sub.1 -I.sub.4) and battery discharge rate signals (I.sub.5) representative of a discharge rate for different type battery chemistries. A microprocessor (27) containing a real time clock (31) is programmed to determine a battery discharge amount during a time interval (T.sub.5) when the battery is removed from service as well as a battery consumption amount during circuit operation (T.sub.1 -T.sub.4). The microprocessor (27) is also programmed to determine a scaling factor for use in determining a battery consumption amount as multi configuration battery packs (35) are utilized.

Method and apparatus for indicating a battery status

An electronic device (100) is disclosed including an electroluminescent (EL) backlight panel (140) and an EL driver circuit (210). The EL driver circuit (210) provides power to the EL backlight (140), as well as panel aging compensation and user adjustment capabilities. The EL driver circuit (210) is low-cost, small-size, and designed in such a way to be easily integrated into a custom integrated circuit. A method is provided for controlling and converting power to the EL backlight panel (140).

Driver circuit for electroluminescent panel

Radio programming memory unit with storage capability

An automated voice operated transmitter control (VOX) arrangement devoid of any separate manual actuation requirement and adaptable to a dynamic acoustic environment is described. The VOX decides whether it should be operating, automatically selects a threshold condition (70) from a predetermined list according to a average acoustic signal level over a first time period, and provides a VOX PTT signal to activate a radio frequency transmitter (24) when the acoustic signal level, over a second time period that is less than the first time period and exceeds a debounce time (78), exceeds the threshold condition.

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Schaumburg, IL, United States of America

Robert G Uskali