Abstract: A method of fabricating a color image sensor includes the steps of: (a) providing a gray scale image sensor with an array of photoelectric converting cells and a plurality of bonding pads on a substrate; (b) applying a first transparent layer on surface of the gray scale image sensor; (c) successively forming first, second and third color filter patterns on the first transparent layer, the first color filter pattern being disposed directly above a first group of the photoelectric converting cells, the second color filter pattern being disposed directly above a second group of the photoelectric converting cells, the third color filter pattern being disposed directly above a third group of the photoelectric converting cells; (d) coating a second transparent layer on the color filter patterns and on portions of the first transparent layer not covered by the color filter patterns; (e) depositing a metal layer on the second transparent layer; (f) patterning and etching the metal layer so as to remove portions of t

Abstract: A memory cell manufacturing method includes the steps of: providing a silicon substrate with buried regions that are spaced by a channel; depositing a gate oxide layer over the substrate; removing a portion of the gate oxide layer which is over the channel; depositing a first polysilicon layer over remaining portions of the gate oxide layer and over exposed portion of the substrate; growing an insulating layer over the polysilicon layer; providing a first mask on the insulating layer, the mask having a length shorter than that of the insulating layer and two end portions which overlap respectively the buried regions; etching portions of the insulating layer and the polysilicon layer not covered by the mask; depositing a thin oxide layer over a remaining portion of the insulating layer; depositing a second polysilicon layer over the thin oxide layer and over the buried layers; providing a second mask, which has a width narrower than that of the second polysilicon layer, on the second polysilicon layer to defin

Abstract: A method for manufacturing a hybrid circuit-type charge-coupled device image sensor includes the steps of: forming a lead wire unit on a first layout surface of a ceramic base; attaching a charge-coupled device image sensor die on the first layout surface; wire bonding the charge-coupled device image sensor die to the lead wire unit; mounting a window frame on the first layout surface to enclose the charge-coupled device image sensor die by applying a layer of sealing material on a lower peripheral end of the window frame; mounting a glass lid on the window frame by applying another layer of sealing material on an upper peripheral end of the window frame; and heating an assembly of the glass lid, the window frame and the ceramic base in an oven so as to cure and harden the layers of sealing material and bond together the glass lid, the window frame and the ceramic base.

Abstract: A signal processing circuit is to be connected to an output stage of a charge-coupled device which includes a reference signal circuit and a CCD signal circuit that generate first and second output signals, respectively. The signal processing circuit includes a differential circuit and first and second amplifiers. The differential circuit receives the first and second output signals from the output stage of the charge-coupled device and generates a first signal corresponding to the first output signal and a second signal corresponding to the second output signal. The first amplifier has an output, a first input which receives the first signal from the differential circuit, and a second input which is connected to the output to serve as a negative feedback input thereto. The second amplifier has an output, a first input which receives the second signal from the differential circuit, and a second input which is connected to the output of the first amplifier to serve as a negative feedback input thereto.

Abstract: A charge-coupled-device image sensor includes first, second and third linear array imagers, first, second and third horizontal charge-coupled-devices, first, second and third transfer gates and first and second vertically arranged charge-coupled-devices. The first transfer gate is operated so as to transfer electrons from the first linear array imager to the first horizontal charge-coupled-device. The third transfer gate, the first and second vertically arranged charge-coupled-devices and the second horizontal charge-coupled-device are operated so as to transfer electrons from the third linear array imager to the third horizontal charge-coupled-device. The second and third transfer gates and the first vertically arranged charge-coupled-device are operated after electrons from the third linear array imager have been transferred to the third horizontal charge-coupled-device so as to transfer electrons from the second linear array imager to the second horizontal charge-coupled-device.

Abstract: A digital tone mixer includes a first digital volume regulator electrically connected to a first tone generator and having a binary signal output corresponding to the desired amplitude of a pulsating tone signal from the first tone generator; a second digital volume regulator electrically connected to a second tone generator and having a binary signal output corresponding to the desired amplitude of a pulsating tone signal from the second tone generator; a binary adder for summing the binary signal outputs of the first and second volume regulators; and a pulse rate modulator receiving a binary output from the binary adder and generating a pulse train which has a pulse density corresponding to the binary output of the binary adder. The digital tone mixer has a very stable output characteristic.

Abstract: A multiplexing input device is to be used in combination with an integrated computer mouse control circuit and includes a movement sensor unit and a key input control unit. The movement sensor unit and the key input control unit are connected to four input terminals of a controllable variable impedance unit. A timing control circuit has a sensor activating output which intermittently operates the movement sensor unit. The timing control circuit controls the resistance of the variable impedance unit according to the input signal to be sampled. A comparator unit is connected to the output terminals of the variable impedance unit. The output signals of the comparator unit are received by a demultiplexing unit. The demultiplexing unit has a first set of data outputs corresponding to the movement signals from the movement sensor and a second set of data outputs corresponding to the status of press keys on the key input control unit.