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Henry Chang, San Diego US

Henry Chang, San Diego, CA US

Patent application numberDescriptionPublished
20080268917POWER MANAGEMENT IN A PORTABLE COMMUNICATION DEVICE BASED ON RADIO CONFIGURATION VERSION - A portable communication device transmits, to a communication network, a radio configuration (RC) request indicator requesting assignment of a power saving radio configuration for reverse link transmissions. The power saving radio configuration is one a plurality of radio configurations including the power saving radio configuration and at least one other radio configuration defined by a communication standard different than the communication standard defining the power saving radio configuration. Average power consumption at the portable device when the portable communication device participates in the call using the power saving radio configuration is less than if the other radio configuration is used for the call.10-30-2008
20080279168SYSTEM AND METHOD FOR BROADCASTING OVERHEAD PARAMETERS IN POOR COVERAGE REGIONS - To improve WWAN coverage, an access node broadcasts overhead messages on a first channel covering a first channel environment and a second channel covering a second channel environment within a coverage region. The overhead messages carry network overhead parameters for allowing wireless mobile devices to acquire and maintain traffic channels within the cellular system. The overhead message channels are configured so that a user perceives uninterrupted wireless services while moving through different channel environments in the coverage region. In one embodiment, the overhead message channels are separate physical channels configured with different broadcast parameters to provide coverage in different environments. In another embodiment, the overhead parameter information is segregated into base and extended components that are encoded and layer modulated onto separate logical channels. Using layered modulation, wireless mobile devices can receive base components in poor coverage regions. The base components include overhead parameters for acquiring a WWAN channel.11-13-2008
20080280630SYSTEM AND METHOD FOR BROADCASTING PAGE MESSAGES IN POOR COVERAGE REGIONS - A system and method for paging wireless mobile devices selectively varies the effective modulation order of a paging channel to achieve improved coverage in a wireless wide area network (WWAN) cell. In one embodiment, the paging channel modulation order is selected based on a measured signal strength and/or common channel error rate. The selected modulation order is directly related to the quality of the channel environment. In another embodiment, a page message is segregated into base and extended components that are layer modulated. With layered modulation, wireless mobile devices in good coverage regions can successfully demodulate both the base and extended components to recover the entire page message. Wireless mobile devices in poor coverage regions can successfully demodulate the base component of the page message, and then request that the extended component of the page message be re-broadcast as a base component to thereby recover the entire page message.11-13-2008
20090215400PILOT SIGNAL TRANSMISSION MANAGEMENT - A base station transmits a pilot signal when the presence of a wireless communication device is detected. A wireless device detector receives a detection signal transmitted from a wireless communication device to determine the presence of the wireless communication device.08-27-2009
20100120398USER ZONE INFORMATION TRANSMISSION MANAGEMENT - A detecting base station transmits user zone information to wireless communication device when the presence of a wireless communication device is detected. A detecting base station receives a detection signal, such as an uplink signal, transmitted from the wireless communication device to determine the presence of the wireless communication device. The detecting base station notifies the core network the detection by transmitting a device proximity message and, after receiving authorization from the network, transmits the user zone information within the broadcast channel used by the originating base station communicating to the wireless communication device.05-13-2010
20100175542Illuminated Musical Control Channel Controller - An illuminated controller for a musical control channel, having: a light transmitting body; a mounting system holding a bottom end of the light transmitting body such that the light transmitting body can be positioned at different angular positions; a handle at a top end of the light transmitting body; at least one light source positioned to illuminate the light transmitting body; and an actuator connected to the mounting system, wherein the actuator translates the angular position of the light transmitting body into a signal for controlling a musical control channel.07-15-2010
20100177516Illuminated Cymbal - An illuminated cymbal, including: a light transmitting cymbal body; top and bottom coverings on opposite sides of portions of the cymbal body; a light source mounted to emit light into the cymbal body, wherein the light source is positioned such that the light is reflected between the top and bottom coverings to reflect radially outwards through the cymbal body to illuminate the cymbal body; and a striking sensor pad mounted on top of the cymbal body.07-15-2010
20100240314PILOT SIGNAL TRANSMISSION MANAGEMENT - A base station is configured to reduce interference with other base stations and/or devices in a multi-cell wireless network. The base station includes a wireless interface, detector and controller. To reduce interference, the wireless interface may provide services to a first wireless communication device (WCD) using a pilot signal emitted from the base station at a reduced power level. In the reduced pilot signal mode, when the detector detects a second WCD within the base station's service area, the controller increases the pilot signal's power level above the reduced power level in order to establish communications with the second WCD. Upon successfully connecting to the first and second WCDs, the base station may again reduce the pilot signal's power level to reduce interference with other base stations or wireless devices.09-23-2010

Patent applications by Henry Chang, San Diego, CA US