摘要:
The present invention provides a method/protocol (400, 800) and device (600; 700) for transmitting a synchronous stream of information, in a wireless, centrally controlled communication system. The method includes the steps of parsing the synchronous stream of information into a plurality of predetermined fixed sized blocks and transmitting/retransmitting each fixed size block in a predetermined window of time until one of: reception of each fixed size block is positively acknowledged and each corresponding predetermined window of time has elapsed.
摘要:
A RAKE receiver (112) includes a plurality of fingers (122, 124, 126, 128). Each finger includes a demodulator (402) for demodulating a ray of a multipath signal and a time tracking circuit (404) for controlling the time position of the finger in accordance with time position of the ray. A low delay-spread condition is detected and the positions of two adjacent fingers are controlled to prevent convergence of two or more fingers about a common time position. By maintaining finger timing separation, path diversity is exploited by the RAKE receiver even during the low delay-spread condition to improve receiver performance.
摘要:
A radio communication unit for a digital communication system is provided in which an input information signal is protected from transmission errors by forward error correction encoding the information signal. In addition, the communication unit enhances subsequent processing of a transmitted form of the information signal by a hard-limiting receiver by inserting a predetermined synchronization sequence into the information signal. Further, a corresponding radio communication unit is provided which includes a hard limiting mechanism for removing the magnitude of each sample in a group of data samples of a signal received from over a radio communication channel. In addition, weighting coefficients of the hard-limited group of data samples for maximum likelihood decoding and diversity combining are generated by comparing the hard-limited group of data samples to a known predetermined synchronization sequence. Finally, estimated information samples are generated, utilizing the weighting coefficients, by maximum-likelihood decoding the group of data samples.
摘要:
Embodiments relate to systems and methods for touch-based two-stage text input. An electronic device (102), such as a wearable wireless device, can be configured with a two-stage input interface (116) on a display (104). A first stage can include a seek area (120), which displays a subset of letters or other symbols to represent the full range of symbolic elements that are available, in a compressed form. The user can identify an intended target range (128) by touching an area at or around the letter or other symbol of interest. That input triggers the display of a second stage of the interface in a separate selection area (122), in which all letters or other symbols in the target range are expanded and displayed. The user can then touch and lift off the letter or other symbol they wish to choose, for example, to insert in a message or application.
摘要:
A method for selecting an alternate wireless communication system for a wireless communication device is disclosed. The method comprises using a first radio access technology (RAT) by a wireless communication device when scanning (202) for an initial wireless communication network (201). The wireless communication device further registers (215) to the initial wireless communication network (201). Then, the initial wireless communication network (201) determines (206) alternate RAT wireless communication network information for the wireless communication device and sends (235) the alternate RAT wireless communication network information to the wireless communication device. The wireless communication device receives the alternate RAT wireless communication network information and selects (240) a first alternate wireless communication network from within the alternate RAT wireless communication network information, scans for the first alternate wireless communication network using an alternate RAT and registers with the first alternate wireless communication network using the alternate RAT.
摘要:
A method and apparatus is provided for synchronizing a received communication signal. A synchronization signal is derived from a received signal having a plurality of synchronization words. Each synchronization word has a predetermined number of synchronization symbols. The synchronization signal is filtered. The filtering is characterized by spacing each filter tap to correspond to synchronization word length increments. Synchronization information is generated which is based on a comparison of the filtered synchronization signal to a threshold. Finally, the synchronization information is output based on a confidence derision derived from the synchronization information.
摘要:
Disclosed is a method of interactive display that includes providing a touch-based display screen capable of stereoscopic displaying of object images that further includes displaying a plurality of object images on the display screen, wherein at least a first of the object images is selectable and displayed so as to appear to be located at least partially in a zero-plane of the display screen, wherein at least a second of the object images is displayed so as to appear to be located at least one of inwardly and outwardly of the zero-plane, receiving a first input at a location of the display screen substantially corresponding to the first of the object images, and identifying the first input as corresponding to the first of the object images that is selectable and taking at least one further action upon the identification.
摘要:
Embodiments relate to systems and methods for touch-based two-stage text input. An electronic device (102), such as a wearable wireless device, can be configured with a two-stage input interface (116) on a display (104). A first stage can include a seek area (120), which displays a subset of letters or other symbols to represent the full range of symbolic elements that are available, in a compressed form. The user can identify an intended target range (128) by touching an area at or around the letter or other symbol of interest. That input triggers the display of a second stage of the interface in a separate selection area (122), in which all letters or other symbols in the target range are expanded and displayed. The user can then touch and lift off the letter or other symbol they wish to choose, for example, to insert in a message or application.
摘要:
Disclosed is a method of manipulating viewable objects that includes providing a touch screen display capable of stereoscopic displaying of object images, wherein a zero-plane reference is positioned substantially coincident with the physical surface of the display, displaying on the touch screen a first object image and one or more second object images, wherein the object images are displayed to appear at least one of in front of, at, or behind the zero-plane, receiving a first input at the touch screen at a location substantially corresponding to an apparent position of the first object image, and modifying the displaying on the touch screen so that at least one of the first object image and the one or more second object images appear to move towards one of outward in front of the touch screen or inward behind the touch screen in a stereoscopic manner.
摘要:
A mobile station (104) in a DS-CDMA communication system (100) has receiver diversity. A first antenna (130) receives signals over a communications channel (101) from a base station (102). A second antenna (132) receives signals which are delayed in a delay element (142) by one or more chip times and combined in a summer (148) with signals from the first antenna. The combined signals are presented to a RAKE receiver (112) for decoding and demodulation. When discernible multipath energy is present to the point where much of the received signal energy is not accounted for in the assigned RAKE receiver fingers, the second antenna is switched out to avoid increasing the level of interference.