Abstract: An acoustic inkjet printhead utilizes a pulse width modulation to control droplet size or ejection velocity. An individual control pulse controls the duration and the time a RF signal is applied to each transducer. To modify the RF signal of each transducer, the pulse width of each control signal can be modified according to a predetermined correction data. The rising edge of the control data is delayed according to the correction data while the falling edge is kept the same.

Abstract: A pulse width modulation circuit utilizes a clock divider to generate a plurality of clocks to be used by a plurality of delay blocks. Each delay block has plurality of delay elements each of which receives one the plurality of clocks. Each delay block receives a delay data, selects a number of the plurality of clocks based on the delay data and activates the respective delay elements for delaying its input signal.

Abstract: A highlight raster output scanner is disclosed which utilizes an amplitude modulation with its reference level being placed at its white level. Having the reference level at the white level provides the possibility of utilizing two independent power drivers to generate modulation pulses. One power driver generates color pulses (above the white level) and the second power driver generates black pulses (bellow the white level). Since an independent power driver is generating the color pulses, the color level can be raised to saturation to prevent the nonuniformity of the intensity of the light beam for color. Also, any intensity variation of the white level can be adjusted by comparing the white level against the reference level. Finally, the black level is kept at ground potential in the same manner as the prior art.

Abstract: A reference frequency and facet to facet correction circuit utilizes a phase locked loop which includes a digital phase detector to measure the time difference between the end of scan and the end of count of each facet and store them in a lookup table. The phase locked loop continuously generates an average time value form the time differences of all the facets of the polygon. The phase locked loop also adds the errors of each facet to the average time value and uses the result to correct the frequency of a pixel clock generator for both the reference frequency and facet to facet errors.

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: A collimating system utilizes a Rainbow.RTM. disk for holding and adjusting the position of the collimating lens. By applying a voltage to the two surfaces of the Rainbow.RTM. disk, the disk changes shape which causes the position of the collimating lens to be displaced. By adjusting the amount of voltage applied to the disk, the position of the collimating lens can be precisely adjusted to provide a substantially collimating light beam.

Abstract: A phase comparison and error correction circuit which utilizes one of a plurality of outputs of its phase detector as a biasing voltage for its error correction circuit.

Abstract: A thin film deposition chamber utilizes a planetary fixture and two vapor sources to generate two partially overlapping vapor streams. The two vapor streams create a combined distribution profile. The planetary fixture holds a plurality of substrates in a position similar to a portion of the combined distribution profile.

Abstract: A raster output scanner is disclosed which utilizes a replaceable laser diode and a replaceable microchip which contains characteristics information of the laser diode in use by the raster output scanner. Once, the laser diode is replaced, the microchip has to be also replaced by a microchip which contains the characteristics information of the new laser diode.

Abstract: A decompressing method for generally providing more than four bits of decompressed data in each clock cycle. The decompressing method of this invention is capable of decoding four non-long horizontal codes in parallel and selecting either the decompressed data of the first code if it generates four or more bits of decompressed data or selecting the decompressed data of the first code with a combination of the decompressed data of the following codes if the first code generates less than four bits of decompressed data. The decompressing method decompresses the long horizontal codes (codes which generate more than four bits of data) separately.

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: There is disclosed an electrocapillary display sheet which utilizes three transparent sheets being spaced from each other and placed parallel to each other. The medial sheet has a plurality of reservoirs which are filled with a dyed or pigmented ink. Each of the reservoirs has an individually addressable voltage source to create an individual electric field. By activating each electric field, the ink from the corresponding reservoir flows out into the space between the medial sheet and one of the other two sheets in order to create a pixel. By removing the electric filed, the liquid which had created a pixel will retreat back into the reservoir.

Abstract: A decompressor for generally providing more than four bits of decompressed data. The decompressor of this invention is capable of decoding four non-long horizontal codes in parallel and selecting either the decompressed data of the first code if it generates four or more bits of decompressed data or selecting the decompressed data of the first code with a combination of the decompressed data of the following codes if the first code generates less than four bits of decompressed data. This decompressor decompresses the long horizontal codes (codes which generate more than four bits of data) separately.

Abstract: There is disclosed a printing system in which an array of VCSELs as a light bar print head directly sends an array of light beams onto a photoreceptor without using an imaging optical element. In this invention VCSELs are selected to have a slowly diverging light beams. A photoreceptor is placed at a certain distance from the VCSELs where the light beam has a width equal to a desired spot corresponding to a given printing resolution.

Abstract: A twisting ball display sheet is disclosed which utilizes a mechanism other than Zeta potential to create dipole moment to rotate a plurality of bichromal balls. The twisting ball display sheet comprises a transparent sheet which contains a plurality of bichromal balls. Each bichromal ball comprises two hemisphere. Each hemisphere has a material which has a different work function than the work function of the other hemisphere. The two different work functions of each bichromal ball create a dipole moment which at the presence of a proper electric filed will cause the bichromal ball to rotate.

Abstract: There is disclosed a shunt voltage regulator which utilizes a reference voltage which generates a floating output voltage with respect to a voltage to be regulated. The shunt voltage regulator of this invention also utilizes the voltage to be regulated as a power supply to its reference voltage generator, the level shifters and the Op-Amp.

Abstract: A compact design for the electronic circuits to provide electrical contact to a SED roll of a segmented electrode development unit is provided. In this invention, all the required high voltage and low voltage circuitry is placed on a printed flexible circuit which is folded and rolled into a cylindrical circuit to be connected to the SED roll. The flexible printed circuit has a plurality of output terminals each of which will be connected to one of the electrodes of the SED roll.

Abstract: There is disclosed a compact design for the electronic circuits required to provide electrical contact to a SED roll of a segmented electrode development unit. In this invention, all the required high voltage and low voltage circuitry is placed on a printed flexible circuit which is folded and rolled into a cylindrical circuit to be connected to the SED roll. The flexible printed circuit has a plurality of output terminals each of which will be connected to one of the electrodes of the SED roll. In this invention, a spool is used to support the connection of the cylindrical circuit to the SED roll.

Abstract: An electrocapillary color display sheet is disclosed which utilizes three spaced apart and parallel sheets in which the medial sheet has a plurality of sets of at least two reservoirs. The space between the medial sheet and one of the other sheets create a first sealed passage and the second space between the medial sheet and the other one the two other sheets create a second sealed passage. Each reservoir in each set holds a conductive clear liquid and a portion of a pigmented liquid while the rest of the pigmented liquid is located in the second passage. Each clear liquid in each reservoir has an individual electrical connection. By selectively activating each clear liquid in each reservoir of each set of reservoirs, the activated liquid of the set of reservoirs will flow into the first passage and the pigmented liquid will retract into the reservoir.

Abstract: There is disclosed a converter for converting a floating voltage of a Band Gap Reference voltage generator fabricated in P-substrate CMOS technology to a fixed voltage with respect to ground. The converter of this invention utilizes a subtractor to convert the floating voltage to a fixed reference voltage. In addition, the converter of this invention utilizes two level shifters which are able to level shift the floating voltage down and level shift the shifted down voltage substantially back to the level of the floating voltage in order to allow a buffer to be used prior to the subtractor.