Seiko Epson Corporation

Tomoyuki Kurata

Shunichi Mizuochi

Mikio Nagahara

Akifumi Hayashi

Shigeru Imafuku

Satoshi Nakata

Tomoyuki Nakano

Kazumasa Harada

Akira Maruyama

Maho Terashima

Akira Kimura

Yoshiaki Shibasaki

Kazunobu Nimura

Yohei Terashi

Takeshi Fukui

An image forming apparatus that forms an output image including an authentication image for authenticity determination on a medium. The image forming apparatus includes: a recording head configured to discharge a droplet onto the medium; a drive unit configured to perform main scanning in which the recording head moves in a main scanning direction and sub scanning in which the medium is fed in a feeding direction; and a control unit configured to control, based on image formation data representing the output image, the main scanning and the sub scanning performed by the drive unit, and the discharge of the droplet performed by the recording head. The control unit performs a control to form the authentication image by a plurality of times of the main scanning in which feeding positions of the medium in the feeding direction are different, and performs a control so that at least one feeding amount of the medium in one sub scanning is different between a feeding amount at time of forming the authentication image and a feeding amount at time of forming a portion of the output image that does not include the authentication image.

Image forming apparatus and image forming method

A liquid supply system adapted to be mounted in a carriage unit having a first liquid introduction portion and a second liquid introduction portion is proposed. The liquid supply system comprises two liquid supply units each having liquid supply portion adapted to liquid to the first and second liquid introduction portions, respectively. The two liquid supply units are adapted to be attached to and detached from the carriage unit. The liquid supply system further comprises a holder unit adapted to be attached to and detached from the carriage unit and adapted to fix the two liquid supply units to the carriage unit. The two liquid supply units are located between the holder unit and the carriage unit.

Liquid supply system

A terminal device includes a plurality of search channel sections which search for a positioning satellite, a candidate reception frequency calculation section which calculates a candidate reception frequency of a first acquisition target satellite by causing the search channel sections to perform the correlation accumulation process for a first accumulation time, a candidate frequency confirmation section which confirms reliability of the candidate reception frequency by causing the search channel sections to perform the correlation accumulation process for a second accumulation time longer than the first accumulation time, a final frequency calculation section which calculates a final frequency by causing the search channel sections to perform the correlation accumulation process for a third accumulation time longer than the second accumulation time, and a first difference calculation section which calculates a difference between an estimated synchronization frequency corresponding to each first acquisition target satellite and the final frequency.

Terminal device, positioning method, and recording medium

A final located position when a GPS receiver section (positioning section) has finished positioning is determined to be the latest located position, and the combination of identification information (ID) of base stations (suspended base stations) with which a portable telephone wireless communication circuit section has performed wireless communication is stored in a flash ROM. The combination of base stations that currently perform wireless communication with the wireless communication section and the combination of the suspended base stations stored in the flash ROM are compared when the GPS receiver section again performs positioning. When it has been determined that the combinations coincide, the latest located position stored in the flash ROM is estimated to be the present position of a portable telephone. The estimated present position is used as the initial position during the first positioning when the GPS receiver section again performs positioning.

Present position estimation method, positioning method, program, and mobile terminal

A positioning device includes a moving amount determination section which determines a moving amount of the device in a period between a preceding positioning time and a present positioning time; a moving amount evaluation section which determines whether or not the moving amount is within a predetermined allowable moving range; a positioning section which locates a position of the device based on a satellite signal which is a signal from a positioning satellite; an average position calculation section which calculates an average position by averaging a preceding located position and a present located position when the moving amount evaluation section has determined that the moving amount is within the predetermined allowable moving range; and a position output section which outputs the average position.

Positioning device, method of controlling positioning device, positioning control program, and computer-readable recording medium having positioning control program recorded thereon

A communication base station includes a propagation time evaluation section which determines whether or not a propagation time required for a communication radio wave to propagate between the communication base station and a positioning device is within a predetermined allowable time range, a code phase calculation section which calculates a code phase of each satellite signal, a difference calculation section which calculates a difference between the code phase calculated by the communication base station and a positioning-side code phase, a difference evaluation section which determines whether or not the difference is within a multipath range which is a difference range when the positioning-side code phase is affected by a multipath, a correction value transmission section which transmits the code phase calculated by the communication base station to the positioning device when the difference evaluation section has determined that the difference is within the multipath range, and the like.

Positioning system, positioning device, communication base station, control method, and recording medium storing program

A communication base station has: a communication signal sending device for sending a communication signal including base station position information indicating a position of the communication base station and sending direction information indicating a sending direction from the communication base station, and the terminal apparatus has: a communication signal receiving device; a base station pseudo range information generating device; a satellite orbital position information generating device; a satellite pseudo range information generating device; a candidate position information generating device; and a positioning location information generating device for designating one position out of positions on the circumference indicated in the candidate position information on the basis of the sending direction information to generate positioning location information, and so on.

Positioning system, terminal apparatus, method of controlling terminal apparatus, program for controlling terminal apparatus and computer-readable storing medium for storing program for controlling terminal apparatus

The terminal apparatus has: positioning vector information generating means for generating positioning vector information which indicates a passing direction and a passing speed, based on the satellite signals used when each item of the current position information was generated; passing speed information generating means for generating passing speed information which indicates a passing speed of the terminal, based on the Doppler shift information and the transmitting frequency information; speed vector information generating means for generating speed vector information which indicates a passing direction and a passing speed of the terminal apparatus with respect to each of the communication base stations, based on the transmitting direction information and the passing speed information; combined vector information generating means for generating combined vector information which indicates a passing direction and a passing speed of the terminal apparatus, based on a plurality of the passing vector information; and current position information selecting means.

Positioning system, terminal apparatus, terminal apparatus control method, terminal apparatus control program, and computer readable recording medium having the terminal apparatus control program recorded therein

A positioning system includes: a terminal apparatus and an information supply apparatus capable of communicating with the terminal apparatus. The information supply apparatus includes: external timing signal generating means for generating an external timing signal constituted by external events; satellite time information generating means; external timing signal correcting means; and transmitting time information generating means. The terminal apparatus includes: communicating means; terminal timing signal generating means for generating a terminal timing signal constituted by internal events; clock number recording means; interevents clock number information generating; time difference information generating means for generating time difference information which indicates times between reception of the external events and generation of the internal events based on the interevents clock number information; and internal time information generating means for generating internal time information.

Positioning system, information supply apparatus, terminal apparatus, control method of terminal apparatus, control program for terminal apparatus and computer readable recording medium for storing control program for terminal apparatus

A positioning system is provided to set easily initial position information at a low cost without using a database in which positions of base stations are stored. A GPS serverhas a server positioning sectionthat receives a position related signal transmitted by a GPS satellite to obtain data. A server-orbit-information acquiring programanalyzes the data to generate orbit informationand stores orbit informationin a server third storing unit(ST). A satellite-direction-information generating programgenerates satellite direction informationwhich includes an elevation angle and an azimuth angle of the GPS satellite viewed from a reference point (ST). A generation-time-information generating programacquires the time when the satellite direction informationis generated from a server clock sectionand stores the time in the server third storing unit(ST).

Positioning system, positioning apparatus, positioning information providing apparatus, positioning method, control program for positioning system, and computer readable recording medium having recorded therein control program for positioning system

A terminal unit is attached to a monitoring object. The terminal unit locates its position via a position-related signal from a satellite positioning system. The terminal unit acquires first-located position information first, and then second-located position information upon a lapse of a predetermined positioning interval after the first-located position information is acquired. When the first-located position is within a permissible moving zone and the second-located position is outside the permissible moving zone, the terminal unit acquires third-located position information before the predetermine positioning interval lapses. If the third-located position is still outside the permissible moving zone, then the terminal unit sends a reporting signal to a monitor apparatus. The monitor system reduces occurrences of inaccurate reporting signals.

Monitor system, terminal unit, monitor system control method, terminal unit control method, terminal unit control program, computer-readable recording medium having the terminal unit control program, administrative apparatus, administrative apparatus control method

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Matsumoto, Japan

Tomoyuki Kurata