Abstract: Data-processing systems and methods include a rendering device which renders documents based upon the timing and duration of a laser beam associated with particular pixel data. Additionally, a controlling mechanism for controlling and adjusting the particular pixel data can be provided, wherein the controlling mechanism is subject to pixel clock signal in order to optimize a performance of the rendering device under varying rendering parameters and thereby enhance the quality of data rendered via the rendering device. Such a controlling mechanism can be implemented as a programmable phase locked loop circuit to which a pixel clock signal and a frequency are applied in order to provide at least one output signal for controlling the laser beam.

Abstract: A method and electronic circuit for driving multiple backlight lamps by means of DC switching, that is, current switching with single DC high voltage source. The inverter of the present invention does not need any transformers, because it uses an unregulated DC high voltage power supply. The electronic circuit includes a high voltage DC source; a controllable current source; a pair of complementary digital signals; a pair of differential switches controlled by the pair of complementary digital signals for providing a bidirectional current from the current source to the lamp; and a pair of active loads couple to the pair of differential switches, respectively for providing an alternating voltage across the lamp responsive to the complementary digital signals.

Abstract: An electronic trapping implementation in imager with laser driver is provided by comparing an output image from the imager to a reference image to obtain a difference image and calculating one or more frequency and amplitude modulations based on the difference image and applying the one or more frequency and amplitude modulations to the imager until the difference image is eliminated.

Abstract: An electronic circuit is utilized to correct scan non-linearity of a raster output scanner. The circuit modulates a clock frequency to match a scan linearity error profile. Because it is a separate circuit, the exiting closed-loop clock generator does not need to be modified. The correction circuit synchronizes itself with the clock signal using a counter/subtractor phase detector, which ensures that the phase and frequency of the internal clock matches the phase and frequency of the master.

Abstract: Data-processing systems and methods include a rendering device which renders documents based upon the timing and duration of a laser beam associated with particular pixel data. Additionally, a controlling mechanism for controlling and adjusting the particular pixel data can be provided, wherein the controlling mechanism is subject to pixel clock signal in order to optimize a performance of the rendering device under varying rendering parameters and thereby enhance the quality of data rendered via the rendering device. Such a controlling mechanism can be implemented as a programmable phase locked loop circuit to which a pixel clock signal and a frequency are applied in order to provide at least one output signal for controlling the laser beam.

Abstract: A method for banding suppression due to vibration in an image forming and/or image receiving apparatus with laser driver utilizes governing equations which relate the on/off time and intensity to velocity and frequency of vibration are disclosed. Using derived formulas, an amplitude and frequency modulation (AM/FM) combination is used to suppress the banding due to vibration. The equation which governs the on/off time (FM) is t1+e sin(2&pgr;ft1)/vn=t0. This transcendental equation can be solved for the required on-time t1 in terms of the nominal on-time t0, e (vibration amplitude), v0 (nominal velocity) and f (vibration frequency). The equation which governs the intensity is H3(t)=v(t)/v0. H3(t) controls the level of irradiance. This method is further extended to multi-temporal vibration frequency and may correct banding due to irradiance modulation.

Abstract: A method for banding suppression due to vibration in an imager utilizing a light emitting diode (LED) array is disclosed. By characterizing the LED array and knowing the amplitude and frequency of the signal due to vibration which causes the banding, the LEDs' driving currents are modulated in reverse direction corresponding to the banding signal to suppress the banding.

Abstract: An acoustic inkjet print head having the RF generator and amplifier located at the load location for directly driving the load is disclosed. In so doing the power distribution medium, e.g. transmission line and any power divider device are eliminated. The overall power efficiency can be near to the high efficiency amplifier. In the case of Class-E, greater than 90 percent efficiency can be achieved. Due to the miniaturization of components the high efficiency power supply can be shielded effectively to minimize EME and can be further be integrated to a MCM or IC.

Abstract: An acoustic inkjet print head having the RF generator and amplifier located at the load location for directly driving the load is disclosed. In so doing the power distribution medium, e.g. transmission line and any power divider device are eliminated. The overall power efficiency can be near to the high efficiency amplifier. In the case of Class-E, greater than 90 percent efficiency can be achieved. Due to the miniaturization of components the high efficiency power supply can be shielded effectively to minimize EME and can be further be integrated to a MCM or IC.

Abstract: An electronic circuit is utilized to correct scan non-linearity of a raster output scanner. The circuit modulates a clock frequency to match a scan linearity error profile. Because it is a separate circuit, the exiting closed-loop clock generator does not need to be modified. The correction circuit synchronizes itself with the clock signal using a counter/subtractor phase detector, which ensures that the phase and frequency of the internal clock matches the phase and frequency of the master.

Abstract: An electronic trapping implementation in imager with laser driver is provided by comparing an output image from the imager to a reference image to obtain a difference image and calculating one or more frequency and amplitude modulations based on the difference image and applying the one or more frequency and amplitude modulations to the imager until the difference image is eliminated.

Abstract: A method for banding suppression due to vibration in an imager utilizing a light emitting diode (LED) array is disclosed. By characterizing the LED array and knowing the amplitude and frequency of the signal due to vibration which causes the banding, the LEDs' driving currents are modulated in reverse direction corresponding to the banding signal to suppress the banding.

Abstract: A method for banding suppression due to vibration in an image forming and/or image receiving apparatus with laser driver utilizes governing equations which relate the on/off time and intensity to velocity and frequency of vibration are disclosed. Using derived formulas, an amplitude and frequency modulation (AM/FM) combination is used to suppress the banding due to vibration. The equation which governs the on/off time (FM) is t1+e sin(2&pgr;ft1)/vn=t0. This transcendental equation can be solved for the required on-time t1 in terms of the nominal on-time t0, e (vibration amplitude ), v0 (nominal velocity) and f (vibration frequency). The equation which governs the intensity is H3(t)=v(t)/v0. H3(t) controls the level of irradiance. This method is further extended to multi-temporal vibration frequency and may correct banding due to irradiance modulation.

Abstract: A method of creating a plurality of fine pitch integrated interconnects utilizes a flexible layer to create a plurality of integrated interconnects which extend beyond the boundary of the integrated circuit chip onto the substrate. Subsequently, a support layer is deposited on the interconnects and the substrate under the plurality of interconnects which is located beyond the boundary of the integrated circuit chip is removed.

Abstract: An analog video buffer utilizes a complementary push-pull CMOS source follower video buffer with a feedback driver. The CMOS source follower provides a low impedance output node with high driving capabilities, high switching speed, and rail-to-rail linearity and the feedback driver isolates the output node from the feedback needed for the design of the video buffer to provide a transient response without ringing or overshoot.

Abstract: An infrared reflectance densitometer (IRD) sensor which utilizes four blocks each of which generates an element of a given equation and a fifth block which generates an output voltage based on the given equation. The IRD sensor eliminates a problem known as hunting.

Abstract: An imager using an array of photodiodes that does not require non-standard voltages nor multiphase clocking schemes and retains good linearity with low fixed pattern and random noise generation while requiring a minimum of silicon area is described.

Abstract: An electrostatic voltmeter suitable for use in a non-contacting, positive or negative potential sensing, type electrostatic voltmeter. The invention enables a flexible, low cost electrostatic voltmeter to be produced using high-voltage field-effect transistors in the circuit design. The invention further includes input conditioning components that enable high-voltage sensing and high-voltage feedback in such a manner that processing of the input signal from the sensor is accomplished without producing a variation in the current passing through the field-effect transistor in response to voltage variations. Elimination of this variation further reduces the susceptibility of the remaining signal processing circuitry to transient direct current signals. A differential cascode as the input stage is the preferred configuration for the input conditioning components.

Abstract: A circuit which can be used to hold either the maximum or minimum voltage applied. A comparator compares the input voltage to the previous high or low and a set of two mirror circuits either charge or discharge a holding copacitor to the new value. A control circuit of transistor switches configures the circuit into either a maximum or minimum holding mode.

Abstract: An electrostatic measurement apparatus for generating a modified electrical signal in proportion to an electrostatic potential present on a surface. The apparatus includes a sensor for producing a signal representative of the electrostatic potential on the surface. The apparatus also includes high-voltage and low-voltage devices combined to produce an amplifier which transforms the sensor signal into a low-voltage signal indicative the surface potential. The electrostatic measurement apparatus is implemented using high-voltage and low-voltage integrated circuit technology.