Abstract:
A two-way messaging system (100) having a plurality of message subscriber units (500) and a base station (220) in each of a plurality of cells (210). The base station has a transmitter (224) for transmitting messages in an associated cell (210) and a receiver (228) associated therewith for receiving response signals from message subscriber units in a cell. A system controller (300) is coupled to each base station (220) and has a memory (320) for storing the customer paging area data for each message subscriber unit. The system controller (300) receives message requests and automatically updates the customer paging area data for each message subscriber unit (500) by tracking the mobility pattern of each message subscriber unit (500) in the messaging system coverage area (200).
Abstract:
A process and system (50) for purifying water includes a pair of electrodes (52) with a gap (58) between the electrodes (52). The electrodes (52) are connected to a power supply (54) that places a voltage across the two electrodes (52). Raw water (51) is then passed through the electrodes (52) which captures a plurality of ionic species resulting in purifying water (64). A system (50) that takes advantage of this process has a container that holds the pair of electrodes (52). A controller connected to a current sensor monitors the current across the electrodes (52) and adjusts a valve based on the current. If the current is above a first threshold the water flow is decreased and if the current flow is below a second threshold the water flow is increased.
Abstract:
A data communication receiver (100) includes a display (140) for displaying information, a memory (120, 125) for storing messages, and controls (145) for receiving a user input indicating that previews of the messages are to be displayed. A controller (115) provides a portion of a first stored message to the display (140) for presentation on a predetermined region, such as a single line, of the display (140) and subsequently provides a portion of a second stored message to the display (140) for presentation on the single line of the display (140). Alternatively, subjects, rather than portions of message text, for each of the first and second messages can be provided to the display (140) for display on the single line of the diplay (140).
Abstract:
An electronic device (12) having a flexible, conformal energy source (100). The energy source (100) includes at least two terminals (34 and 36) for attaching the energy source to the device both electrically and mechanically.
Abstract:
Disclosed is a method for generating a high-resolution, real-time, digital video signal from an analog composite video signal such as an NTSC, PAL, or SECAM signal. The analog video signal is digitized (362) and consecutive fields in the signal are merged (364) to produce a frame. Non-uniform interpolation (366) is performed between adjacent scan lines in the frame to generate the high-resolution video signal.
Abstract:
A video signal is converted into a coefficient signal of block coefficient signals for each frame in a video image. Each of the block coefficient signals represents the pixels in a pixel map block (420) with the coefficients in a hybrid polynomial. The hybrid polynomial contains discrete cosine terms, a constant term separated from the discrete cosine terms, and polynomial terms separated from the discrete cosine terms. Coefficient signals for selected frames only are transmitted to a receiving computer (130). The coefficient signals for the selected frames are converted to decompressed pixel map signals and the pixel map signals for unselected frames are interpolated using nonlinear interpolation. The decompressed pixel map signals and interpolated pixel map signals are ordered into an original frame sequence to produce a decompressed video signal.
Abstract:
A video signal (305) is converted into compressed frame signals (360), each comprising a coefficient signal of block coefficient signals for each frame in a video image. Each of the block coefficient signals represents the pixels in a pixel map block (420) with the coefficients in a hybrid polynomial (325). The hybrid polynomial contains discrete cosine terms, and polynomial terms extracted from the discrete cosine terms. Each block coefficient signal (315) contains background component representing a coefficient of the constant term, a linear component representing the coefficients (345) of the polynomial terms, and a nonlinear component representing the coefficients of the discrete cosine terms.
Abstract:
A measurement device (103) and method determines various metrics between a vehicle (101) and a ground surface (105) using a transmitter-antenna (109) for emitting energy including a portion directed down toward the ground surface. A receiving antenna (115) has a portion oriented facing toward the transmitter-antenna for receiving a portion of the emitting energy along a direct path (117), and a portion oriented facing downwardly toward the ground surface for receiving a portion of the emitting energy reflected from the ground surface along a reflected path (113). A decoder provides separate indications of forward (121) and sideward (123) velocity relative to motion of the vehicle along the ground surface. Furthermore, the decoder comprises means for determining vehicle height (125) dependent on a measured difference in path length, vehicle level (127), or front to rear tilt angle, dependent on polarization elliptical ratio changes, and road surface conditions (129) dependent on amplitude and phase changes that occur versus time.
Abstract:
A method for determining whether a baud rate of a frequency modulated (FM) signal received by a receiver matches a predetermined baud rate (520). A parameter other than the baud rate is detected (560) and used to confirm whether baud rate detection should be made (570), or whether if made, is reliable. The parameter is frequency deviation of the received FM signal, or other suitable parameters of the received FM signal.
Abstract:
A communication device (300) includes a digital modulator (301), a Digital Signal Processor (306), and an amplifier (312). The digital modulator (301) includes an information generator (304) and a peak suppression device (402). The peak suppression device (402) includes a symbol mapper (404) and a symbol scaler (406). The information generated by the generator (401) are mapped on a constellation diagram via the symbol mapper (404). The mapped information is then scaled at the scaler (406) in order to reduce the peak-to-average ratio of the signal at the input to the amplifier (312).