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Seiko Epson Corp. Patents
Assignee:
Seiko Epson Corp.
Address:
Tokyo, JP
No. of patents:
57
Patents:


1 2


Patent Number Title Of Patent Date Issued
D474799 Projector May 20, 2003
D368255 Business card scanner March 26, 1996
7440130 Network device and printer October 21, 2008
Provided is a network board for generating print data in accordance with the information resources received from outside, and sending the print data to a printer, which can easily install or update a color conversion table or a printer driver, etc. necessary for generating the print
7088349 Drive method of an electro optical device, a drive circuit and an electro optical device and an August 8, 2006
A method of sub-field drive can display with a mode of placing emphasis on responsiveness and display with a mode of placing emphasis on gray-scale reproductiveness.A field is divided into plural sub-fields on a time axis, and each of such sub-fields is a control unit of driving a pixel.
6979612 Semiconductor devices and manufacturing methods December 27, 2005
A semiconductor device in certain embodiments includes an insulating layer provided above the upper surface of a semiconductor substrate, and a capacitive element section and a resistance element section formed above the insulating layer. In the capacitive element section, a gate electro
6943765 Electro-optical-device driving method, image processing circuit, electronic apparatus, and corre September 13, 2005
Correction tables store correction data. Based on the correction data, a linear interpolation circuit generates data in accordance with a data value of input image data. A latch circuit group latches each piece of output data of the linear interpolation circuit in synchronization with a
6943079 Semiconductor devices and methods for manufacturing the same September 13, 2005
Certain embodiments of the present invention relate to a method for manufacturing a semiconductor device, in which, when a cell capacitor of a DRAM and a capacitor element in an analog element region are mix-mounted on the same chip, the manufacturing steps can be simplified. First, the
6793330 Ink cartridge for ink-jet printing apparatus September 21, 2004
An ink cartridge for an ink jet printer having a housing having at least one wall. The ink cartridge further has at least two ink chambers for containing different ink accommodated in the housing. Ink supply ports are formed in one wall of the housing within each of the ink chambers. Eac
6784966 Liquid crystal device, projection type display and electronic equipment August 31, 2004
The invention provides a reflection type liquid crystal device, and a projection type display and electronic equipment in which display defects caused by disclination are reduced, minimized or prevented from being produced for a highly fine liquid crystal display with a space between
6561611 Detector unit and ink cartridge incorporated in recording apparatus, and method of judging prese May 13, 2003
Recording paper fed from a paper feed section comes in contact with a paper detection member of a detector unit and the paper detection member is rotated about a first fulcrum, shading the optical axis of an optical sensor. When the recording paper passes through and the paper detection
6447090 Ink cartridge and printer using the same September 10, 2002
An ink cartridge of the present invention has a storage element, in which plural pieces of specific information relating to an ink cartridge are stored at specific addresses that respectively occupy minimum bits required for storage. Namely the storage capacities required for storing
6212244 Fast response automatic gain control April 3, 2001
A two-step automatic-gain-control (AGC) loop for use with a receiver. An AGC amplifier amplifies a received signal. From an output signal from the AGC amplifier, a received-signal-strength-indicator (RSSI) circuit generates an RSSI signal proportional to a received-signal-power level of
6030441 Ink set for ink jet recording and ink jet recording method using the same February 29, 2000
A cyan ink, for ink jet recording, capable of realizing good lightfastness and waterfastness and, in addition, capable of realizing a good image, especially an image having good hue, and an ink set comprising the above cyan ink in combination with a magenta ink and a yellow ink are provi
6023347 Scanner for scanning photographic images February 8, 2000
A device for displaying photographic images by reading image data recorded on a film and displaying them on a display means, wherein the kind of the film is discriminated, at least either one of the number of frames displayed on a screen of the display means or the reading resolution of
5997136 Ink jet recording method and apparatus therefor December 7, 1999
An ink jet recording method which can inhibit feathering or bleeding in a print and provide a sharp color image is disclosed. The ink jet recording method according to the present invention comprises the steps of: ejecting a droplet of an ink composition, comprising a colorant, a thermop
5986513 Phase locked loop with limited lock time November 16, 1999
A phase locked loop circuit employing a single phase detector provides limited maximum lock time by avoiding hang-up. The circuit first establishes a gross indication of phase relation sufficient to establish a direction of phase shift away from the unstable equilibrium point. The ph
5946016 Printer sheet discharge method August 31, 1999
In a printer, a bottom of an automatic paper feeder is formed by a bottom itself of a printer case; an operation lever is provided for operating a hopper and separation pawls arranged in a stacker section; a spring member is used as a changeover mechanism for a paper feed-in roller; an i
5796129 Master slice type integrated circuit system having block areas optimized based on function August 18, 1998
A master slice type gate array has a plurality of block areas. Each block area includes a plurality of basic cells arranged in a matrix. Different block areas have transistors with different channel widths. Within each of the block areas, a plurality of basic cells are connected to one a
5742281 Image control device April 21, 1998
According to the image control device of this invention, when the data lines of the VRAMs (105 to 108) are matched with the data lines of the CPU, the bus converting circuits (101 to 104, 150) are provided between the CPU and the VRAMs (105 to 108) and between the VRAMs (105 to 108) and
5725961 Recording medium having ink-absorbent layer March 10, 1998
A recording medium is provided which causes none of bleeding or feathering, cracking and whitening of a print and is suitably usable especially for ink jet recording. The recording medium, when used in a system where an image is viewed by taking advantage of transmitted light, such as a
5683628 Photochromic composition and photochromic resin obtainable by using the same November 4, 1997
A photochromic composition comprising (a) 100 parts by weight of a di(meth)acrylate compound represented by the formula (I): ##STR1## wherein R.sup.1 s each independently represent hydrogen or methyl, R.sup.2 s and R.sup.3 s each independently represent alkylene having 1 to 4 carbon
5555027 Video processor for enlarging and contracting an image in a vertical direction September 10, 1996
There is disclosed a video processor capable of arbitrarily expanding or contracting an image in a vertical direction. A horizontal synchronizing signal HS of a video signal CS is inputted to a reference input terminal 63a of a phase comparator 63 of a PLL circuit 62 to take out a clock
5526013 Method of driving an active matrix type liquid crystal display June 11, 1996
In a method for driving an active matrix type liquid crystal display device having a liquid crystal panel having the structure that a set of liquid crystal layers and two-terminal active layers are connected in series between a set of column electrodes and a set of row electrodes, a disp
5455807 Time maintenance and display in a time keeping system including a time zone boundary October 3, 1995
In a time keeping system providing time of day by radio signal to remote time keeping devices, the transmitted time of day is provided in association with a given time zone identification. The time keeping devices receiving the time of day reference and the time zone identification i
5422678 Video processor for enlarging and contracting an image in a vertical direction June 6, 1995
A video processor which is capable of arbitrarily expanding or contracting an image in a vertical direction is described. A horizontal synchronizing signal HS of a video signal CS is inputted to a reference input terminal 63a of a phase comparator 63 of a PLL circuit 62 to take out a clo
5404322 Digital filter and method of design April 4, 1995
A digital filter is designed by characterizing a desired filter passband in the frequency domain, transforming this representation into the time domain, selecting weighting coefficients at periodically spaced intervals from this transformed function, and weighting the coefficients with a
5394552 Docking system for enhancing computer functionality February 28, 1995
A docking system comprising a first detecting element 13 which detects combination states of a personal computer 2 and a station 1. A second detecting element 14 is provided which detects a separation of the personal computer 2 from the station 1. The docking system also includes a c
5376856 Piezoelectric/electrostrictive actuator having ceramic substrate with auxiliary windows in addit December 27, 1994
A piezoelectric/electrostrictive actuator including a ceramic substrate and piezoelectric/electrostrictive elements is disclosed. The ceramic substrate includes: a spacer plate having a plurality of windows formed in a row in the longitudinal direction of the spacer plate, and auxiliary
5337314 Wireless facsimile computer slate August 9, 1994
A radio paging network transmits non-paging data, such as facsimile images, to lap top computer receivers by formatting the data into a series of packets and interleaving these packets, on a space available basis, into the paging signal.
5306664 Semiconductor device, method of forming bump electrode of a semiconductor device, method of pack April 26, 1994
A bump electrode of an inexpensive and reliable semiconductor device is provided in which a remaining metal wire portion produced during bump electrode formation is eliminated. The remaining metal wire portion made in a bump electrode forming method for a semiconductor device using a wir
5298860 Method of analyzing metal impurities in surface oxide film of semiconductor substrate March 29, 1994
A method of analyzing metal impurities in a surface oxide film of a semiconductor substrate enables a detection sensitivity of the order of 10.sup.11 atoms/cm.sup.2 in a simple technique. This method comprises measuring a quantity of oxide charge resulting from specified metal impuri
5280501 Data bit synchronization January 18, 1994
Bit synchronization is achieved by identifying potential bit sample points and assigning corresponding weight values as a function of signal noise vulnerability. The greater the possibility of error due to signal noise, the smaller the assigned weight value. The bit sample points associa
5266945 Paging system with energy efficient station location November 30, 1993
A method for searching for a station carrying paging data without unduly draining the paging receiver battery. If a station to which the receiver is presently tuned becomes unreliable, the pager scans among channels listed in a local channel list. If no paging data is received on these
5253481 Control unit for activating compressor October 19, 1993
The compressor activation control unit a rotation detecting means for detecting whether or not the motor is normally activated when the compressor is activated, a judging means for judging that the compressor interior is filled with a liquid refrigerant when the motor is not judged t
5247289 Liquid crystal display device with commonly connected capacitor electrodes September 21, 1993
A liquid crystal display device is provided with a storage capacitor relative to each pixel electrode, and a common electrode is electrically connected to the storage capacitors of adjacent pixel structures between pairs of adjacent scan lines comprising paired odd and even numbered scan
5214795 Low voltage automatic frequency control switch for a radio receiver May 25, 1993
An AFC switch circuit is controlled by an select input logic signal for providing a selected output signal to control the local oscillator in a miniature FM receiver. The output signal has a voltage equal to either an AFC signal voltage for AFC operation of the receiver, or a reference
5208810 Method of data flow control May 4, 1993
Data flow control is achieved by use of variable length flags delimiting information packets whereby longer flags result in less information flow and shorter flags result in greater information flow. A single channel carries message data as well as status and command data in information
5207520 Printer carriage acceleration control device May 4, 1993
A device for PWM control of the printer carriage motor (1) which has a circuit (65) for generating a first PWM pulses of 100% duty ratio, a circuit for computing second PWM pulses (31, 37, 39, 15, 17, 53, 57, 59) according to the PI control method based on the difference between the
5196288 Image forming method of exposing and heating light-sensitive material comprising light-sensitive March 23, 1993
An image forming method of imagewise exposing and heating a light-sensitive material is disclosed. The light-sensitive material comprises a support and a light-sensitive layer provided thereon. The light-sensitive layer contains silver halide, a reducing agent, an ethylenically unsaturat
5189413 Scanning receiver with manual override of frequency scanning routine February 23, 1993
A frequency agile data receiver checks are needed, according to a first protocol, among a plurality of channels to find a channel carrying data. A control activated by the user interrupts this first protocol and institutes a second protocol different than the first. Applied to a paging
5189411 Radio signal data transmission synchronization February 23, 1993
Real time synchronization of radio signal data is achieved by a feedback loop between a clearinghouse generating data and a radio station transmitting data. Transmission time is adjusted in response to detected timing errors by selectively inserting padding data between certain data
5187470 Paging system with local channel lists February 16, 1993
A page receiver is provided a list of alternative paging channels to which it can tune if the paging channel presently being received becomes unreliable. This list, and other lists used by paging receivers in the other geographical areas, are disseminated by linked paging transmitters
5175569 Method of and apparatus for reclaiming inked sheets December 29, 1992
A method of and apparatus for reclaiming an inked sheet which includes a conductive ink layer formed on an insulating supporter, and in which the ink layer has transferred parts and untransferred parts remaining without being transferred; comprising the fact that an electrode (10 FIG. 1)
5170487 Paging system with multiple frequencies and multiple protocols December 8, 1992
The present invention provides a pager system which integrates a plurality of transmitters which operate at different frequencies. Some of the transmitters transmit paging messages using FM subcarrier signals (termed FM-SCA signals) and some transmit messages using a modulated carrier
5166973 Radio paging system with local local loop November 24, 1992
A local telephone/radio paging system includes a local paging system, a telephone, and a memory for indicating which telephone numbers are within the local area. When a telephone number is dialed, if the person dialed does not answer, the telephone switching equipment checks the memory t
5162889 Static random access memory cell November 10, 1992
A semiconductor IC having static memory cells comprised of a first pair of MIS transistors with channels fabricated on a surface of a semiconductor substrate, and a second and third pair of MIS transistors with channels fabricated on a layer of semiconductor thin film that is on top of a
5159713 Watch pager and wrist antenna October 27, 1992
A wide area paging system is disclosed in which paging messages input to the system in one local area can be broadcast to a receiver in any other local area without necessarily broadcasting the message in all areas. A local area clearinghouse in each area stores resident subscriber data
5155479 Radio receiver with adaptive on-off control October 13, 1992
A paging system using synchronized transmission protocol and remote pagers active during monitor intervals to receive data transmitted during corresponding message intervals is provided with adaptive on-off radio receiver control for reducing monitor interval duration to conserve bat
5148469 Direct pager access with full number dialing September 15, 1992
A paging system and method utilize a trunk interface module which is capable of recognizing unique identification numbers, which comprise the telephone number which a caller dials to reach a particular paging receiver. The relative-digit-independent truck interface module is located
5142692 Transmitting information with cut and flip spectrum August 25, 1992
The present invention provides a technique and system for modifying the modulation of the 66.5 kHz subcarrier in such a way that its spectrum will not overlap that required by the 57 kHz subcarrier, while at the same time maintaining compatibility with existing subcarrier receivers. A sp
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