Abstract: In one embodiment, the present invention includes a method for receiving at a transceiver from a baseband processor digital control information that includes both event and schedule information, storing the digital control information in a storage of the transceiver, and operating the transceiver according to the event and schedule information.

Abstract: Methods and apparatus for the display of an image at a remote computer, where the image includes a graphical object to be at least partially omitted from the image displayed at the remote computer. Different regions of the desktop are identified and processed by different capture methods, in such a way as to achieve the desired result while keeping the computational cost low. Applications include the sharing of a local user's desktop with remote users without sharing a local user interface.

Abstract: In one implementation, a method includes receiving control information in a transceiver from a baseband processor and computing ramp values in the transceiver based on the control information. The ramp values may be computed in a signal generator of the transceiver such as an algorithmic generator. Depending on mode of operation, the ramp values may be provided to a power amplifier or a gain block of the transceiver.

Abstract: A technique includes receiving data that is communicated in a frame over a wireless network and processing the data through a filter. A response of the filter is changed during the processing.

Abstract: A technique includes forming a first well in a substrate and forming a second well in the substrate. The first well is electrically isolated from the second well. The technique includes forming an element in the second well to limit current between the first well and the substrate.

Abstract: A voltage regulator configured to receive a supply voltage from a voltage supply and provide a regulated voltage to digital circuitry is provided. The voltage regulator comprises first circuitry configured to inhibit high frequency energy generated by the digital circuitry from transmitting into the voltage supply, second circuitry configured to inhibit low frequency energy generated by the digital circuitry from transmitting into the voltage supply, and third circuitry configured to maintain the regulated voltage at a substantially constant value in response to a current drawn by the digital circuitry.

Abstract: Stereo recovery circuitry for a digital receiver is disclosed that provides increased accuracy and efficiency in recovering stereo signal information from transmitted stereo signals. The stereo decoder includes a digitally controlled oscillator that recovers a pilot tone signal from transmitted stereo signal information. By processing demodulated stereo signals on the digital side and digitally controlling the oscillator, the stereo decoder has increased efficiency and accuracy. In one embodiment, the oscillator may be a phase-locked-loop having a loop filter and an amplitude stabilized tunable resonator. Additional circuitry is disclosed for utilizing the pilot tone signal to recover left and right channel signal information from the demodulated stereo signals.

Abstract: Distortion discrimination circuitry for digital radio receivers and corresponding methods are disclosed that accurately and efficiently discriminate distortion events, including impulse noise and multipath distortion events, to improve the quality of audio output signals. The distortion discrimination circuitry monitors and analyzes the demodulator output to determine when a distortion event has occurred and provides an appropriate indication signal for use by other circuitry within the radio receiver. More particularly, the distortion discrimination circuitry includes impulse noise circuitry that looks for high frequency noise in both the magnitude and multiplexed outputs of the demodulator to determine the occurrence of impulse noise distortion events.

Abstract: Stereo recovery circuitry for a digital receiver is disclosed that provides increased accuracy and efficiency in recovering stereo signal information from transmitted stereo signals. The stereo decoder includes a digitally controlled oscillator that recovers a pilot tone signal from transmitted stereo signal information. By processing demodulated stereo signals on the digital side and digitally controlling the oscillator, the stereo decoder has increased efficiency and accuracy. In one embodiment, the oscillator may be a phase-locked-loop having a loop filter and an amplitude stabilized tunable resonator. Additional circuitry is disclosed for utilizing the pilot tone signal to recover left and right channel signal information from the demodulated stereo signals.

Abstract: Quadrature sampling architecture and method are disclosed for analog-to-digital converters that provide improved digital output signals over prior quadrature mixing implementations. Sampling circuitry according to the present invention samples an input signal with a first and second sampling signals to produce real and imaginary sampled output signals. The first sampling signal, which is associated with the real sampled output signal, is delayed by one-fourth cycle with respect to the second sampling signal, which is associated with the imaginary sampled output signal. This one-fourth cycle sampling signal difference allows for simplified construction of the sampling circuitry. In addition, filter circuitry according to the present invention processes the real and imaginary digital data output signals so that the imaginary digital data output signal is advanced by one-fourth cycle with respect to the real digital data output signal.

Abstract: The present invention provides a chloramphenicol gene cluster and methods of use thereof. Such gene clusters are useful for production of chloramphenicol.

Abstract: A discrete-time strongly cross-coupled complex bandpass modulator is disclosed that achieves the full potential of bandpass delta-sigma conversion by providing a strongly cross-coupled discrete-time complex loop filter structure with very low sensitivity to mismatches and by providing a simple scheme for correcting the effects of modulator mismatches. The complex bandpass modulator includes a plurality of non-linear resonators connected together and acting as a linear complex operator. Each resonator will act as a linear complex operator when an imaginary input signal is delayed by half a sample interval and an imaginary output signal is advanced by half a sample interval. In addition, degradation effects due to modulator mismatches are eliminated by digitally adjusting the relative gain of the real and imaginary paths following the output of the analog-to-digital converter and by adjusting the relative gain of the real and imaginary input signals.

Abstract: An analog resistive touch screen is powered by a current source responsive to a stored digital control value. The current source is calibrated by comparing the excitation voltage across the touch screen to a desired voltage to produce a comparison signal, and adjusting the digital control value in response to the comparison signal so that the excitation voltage becomes substantially equal to the desired voltage. The power supply can therefore be easily constructed in a low-voltage CMOS integrated circuit having a minimal power consumption without sacrificing touch screen resolution. Preferably the comparison of the excitation voltage to the reference voltage is performed by an analog-to-digital converter that is later used in a normal conversion mode for digitizing the touch screen coordinates.

Abstract: An algorithmic converter system includes an algorithmic converter having a loop gain substantially less than two for converting an analog input signal to a redundant digital code; and a digital computation unit for converting the redundant digital code to a digital output signal by computing a polynomial of a radix, said radix being substantially equal to the loop gain, wherein the redundant digital code specifies coefficients of the polynomial. The redundancy extends the analog input conversion range with respect to the voltage reference of the algorithmic converter. Moreover, if the algorithmic converter has a maximum offset of V.sub.offmax, a reference voltage of V.sub.ref, and a loop gain less than 2/(1+V.sub.offmax /V.sub.ref), then loop offset will not cause differential nonlinearities. Nonlinearity is further reduced by digitally compensating for variations in the loop gain.

Abstract: A device to precisely determine the angle of parallax formed by a target object of interest and first and second entrances (30, 30') for the purpose of rangefinding for example. The device having photodetectors (46) for sensing the separation of first and second channel target scene images (68, 68') and for sensing the separation of first and second channel reference marker images (66, 66') and having electronic circuitry (76) and processor (78), wherein by comparison of these separations, may calculate an accurate angle of parallax of the target object of interest and provide the resultant information to the user via a display (80). The device includes a spatial referencing system (14) and therein, the device may automatically account for small misalignments of optical elements which may occur during normal use and in certain embodiments of the device may allow the user to isolate the target object of interest from other objects which may appear in the field of view.

Abstract: An improved metal center rotating anode x-ray tube is shown. The improved x-ray tube includes means for preventing the build-up of charge on the anode glass portion of the tube envelope where the glass flares by constraining the equipotential lines of the electric field in the vicinity of th eflare to parallel the flare surface. Parallelism may be achieved by (1) controlling the angle of the flare and sealing the flare directly to the metal section, (2) modifying the anode rotor to include a flare conforming to the glass flare, and (3) including a ground plane screen in the tube housing.

Abstract: A gas discharge tube is controlled in intensity and in the length along such tube that is illuminated by providing digital control signals to an analog drive circuit connected to the high-voltage energization device for the tube. A pulse-width modulated digital control signal containing illumination length and intensity information is converted to ramp-shaped analog drive pulse that control the voltage at a high-voltage transformer secondary to which the gas discharge tube is connected. A manually actuatable keypad permits the user to enter the information that is then converted to the pulse-width modulated signal.