Citizen Holdings Company, Ltd.

Citizen Watch Company, Ltd.

Honda Giken Kogyo Kabushiki Kaisha

Takashi Ihara

Makoto Watanabe

Akinari Takada

Akira Izumi

Masaaki Namekawa

Minoru Kobayashi

Masami Fukuda

Ienobu Ikeda

Kensaku Matsumoto

Shinya Kondoh

Yoichi Nagata

Toshiki Kobayashi

Akira Shiota

Shigeyuki Takahashi

Hiroshi Kasai

Tadashi Yasuoka

Masao Sakuyama

Yasuo Maekawa

Akira Suguro

Mitsuo Shiga

Masayuki Araki

Kohichi Kazahari

Noritoshi Suzuki

Yuuji Yano

Sinya Kondoh

Shizue Itou

An electrostatic induction generator includes a housing, a first board fixed to the housing, and a second board arranged in parallel to the first board to be able move relative to it, in which electrostatic induction generator, counter electrodes are placed at a first facing surface of the first board, electrically charged films are placed at every other constant interval at a second facing surface of the second board so as to face the counter electrodes, the counter electrodes are comprised of pluralities of first electrodes and second electrodes provided separated from each other at the first facing surface, first electrodes and second electrodes are alternately arranged at constant intervals in a single line, a plurality of lines of single lines of the first electrodes and second electrodes are provided at the first facing surface, and the constant intervals of the plurality of lines respectively differ in phase.

Electrostatic induction generator

Provided is an electric power generating device capable of performing electret power generation by efficiently rotating a rotating electrode group. The electric power generating device includes: a plurality of electret electrodes each made of an electret material and formed into a planar shape, and arranged in a circular shape at intervals in a first plane; a plurality of counter electrodes arranged in a circular shape in a second plane facing the first plane so as to face the plurality of electret electrodes; an oscillating weight supported in a rotatable manner; and a motive power transmission mechanism configured to transmit motive power generated by rotations of the oscillating weight to a rotating electrode group including any one of the plurality of electret electrodes and the plurality of counter electrodes, to thereby rotate the rotating electrode group so that the rotating electrode group is moved relative to another electrode group, the motive power transmission mechanism including a clutch mechanism configured to transmit only a rotation of the oscillating weight in one predetermined direction.

Power generation device and portable electric device

A satellite radio-controlled watch, including a receiving unit for receiving a satellite radio wave containing time information and position information; a storage unit for storing intersection point information indicating a position of an intersection point between a reference line along a great circle orthogonal to a specific great circle on the earth or a reference line along the specific great circle on the earth or a circle parallel to the great circle and a time zone boundary, and time difference division information on a wedge-shaped or belt-shaped area that is adjacent to the reference line and to which the intersection point belongs, and a time zone determination unit for determining a time zone, based on the position information, the intersection point information, and the time difference division information.

Satellite radio-controlled watch

Provided is an electronic device including a rotary power generation device using an electret, which is capable of preventing a spiral spring from being wound up or fully extended. The electronic device includes a power generation mechanism including: first rotary member, which is supported in a freely rotatable manner, and has a center of gravity shifted from a rotation center; second rotary member supported in a freely rotatable manner; an elastic member configured to elastically connect the first rotary member and the second rotary member to each other for rotary motions thereof; a stationary member arranged so as to be opposed to the second rotary member; and an electret film formed on a surface of any one of the second rotary member and the stationary member.

Electronic device

A board arrangement structure includes a housing, a first board fastened to the housing, a second board arranged in parallel enabling, relative movement with respect to the first board, an electrically charged film, a counter electrode, and an output part outputting electric power generated between the electrically charged film and the counter electrode, at least one of the electrically charged film and the counter electrode being arranged at a first facing surface of the first board and the other being arranged at a second facing surface of the second board facing the first facing surface, and the first facing surface of the first board being, fastened to a reference mounting surface provided at the housing.

Electrostatic induction power generator

An electronic watch or clock with an electrostatic induction generator, wherein the electrostatic induction generator has a rotary weight able to rotate with respect to a housing, a rotary member able to rotate with respect to the housing, a counter substrate fastened to the housing, a charging film arranged at one of the rotary member and counter substrate, and a counter electrode arranged facing the charging film at the other, outputs electric power generated between the charging film and the counter electrode to a quartz movement, and provides a window part at one or more locations among the dial plate, housing, or outside casing to enable rotation of the rotary member or transmission of rotation to be visually confirmed.

Electronic timepiece with electrostatic induction generator

There is provided a liquid crystal comprising a liquid crystal panel with a memory effect () sandwiching liquid crystals of a memory effect, a driving circuit () outputs driving voltage for driving the liquid crystal panel with a memory effect () and a temperature sensor for detecting an ambient temperature, wherein the driving circuit () includes a control circuit () for varying a driving voltage. The control circuit has a first temperature compensation range where the driving voltage is increased from a high temperature side toward a lower temperature side according to temperature information detected by the temperature sensor (), and a second temperature compensation range where the driving voltage is rendered in a maximum value at a predetermined temperature, or rendered substantially equal to, or smaller than the maximum value on a side of the boundary, lower than the predetermined temperature.

Ferroelectric liquid crystal device

In an electronic device that includes a first display unit () and a second display unit () that differs from the first display unit () in at least a type, a driving method to perform a display control, and a mode of driving to perform the display control, and that displays a plurality of functions using the first display unit () and the second display unit (), a change request to change from a display in a normal mode () to a function mode () is acquired, and only a display mode of the second display unit () is changed, when the change request is made, to a preparation mode () without changing a display mode of the first display unit () that is in the normal mode () when the display modes of the first display unit () and the second display unit () are to be changed based on the acquired change request.

Electronic device and display control method

An object of the present invention is to provide a memory-type liquid crystal display device capable of controlling a color to be displayed in a peripheral area without using display data based on which display is achieved in the peripheral area. The memory-type liquid crystal display device having a display area and a peripheral area located on the perimeter of the display area, comprising a memory-type liquid crystal provided between first and second substrates and has a first stable state and a second stable state, a first pixel disposed on the display area, a second pixel disposed on the peripheral area and a control unit that applies a reset pulse to a portion of the memory-type liquid crystal corresponding to the first and second pixel so that the portion of the memory-type liquid crystal corresponding to the first and second pixels becomes one of the first and second stable states at a reset period which resets a state of the memory-type liquid crystal, and controls the memory-type liquid crystal so that a portion of the memory-type liquid crystal corresponding to the second pixel maintains its stable state of the reset period at a frame period after the reset period.

Memory-type liquid crystal display device

With the object of providing an electronic device having good radio signal receiving characteristics with a metal outer case housing therewithin an antenna section without restrictions imposed with regard to material or design, an electronic device minimally having an antenna section, an information processing meansfor processing information that is captured by the antenna section, and a metal outer case, which houses therewithin the antenna sectionand the information processing means, wherein the metal outer case is configured so that the antenna sectioncan receive magnetic flux from outside via the metal outer caseand can resonate, the metal outer caseminimally comprising a metal case body memberand a metal caseback member, and wherein a joining and fixing portionbetween the metal case body memberand the metal caseback memberis not provided at a location or in the vicinity of at least a location opposite the substantially center part of the antenna section

Electronic device having metal outer case and antenna therein

A tuning apparatus is provided, wherein the on and off resistances of semiconductor switches within an tuning IC are optimized, so as to provide high sensitivity and superior stability, a wide range of tuned frequency variation, compactness and high performance. The tuning apparatus has a tuning circuit, which has N-channel MOS transistors (N transistors)throughserving as a plurality of semiconductor switches, and a counter circuitwhich controls the opening and closing of the N transistors, a plurality of capacitorsthroughwhich are each connected in series with the plurality of N transistors, and a receiving antennawherein the total electrostatic capacitance of the plurality of capacitors is varied by the opening and closing of the plurality of N transistors, thereby varying the frequency tuned by the plurality of capacitors and the receiving antenna.

Tuning device and radio-wave corrected timepiece

A radio correcting timepiece that can reduce the influence of a radio wave situation of the standard radio wave having time information according to an area, and can make a correction to the exact time in a shorter time is provided. The radio correcting timepiece comprises a signal receiving means () for receiving a standard radio wave and a timepiece means () for correcting and displaying time on the basis of the time information outputted from the signal receiving means. The signal receiving means () can receive plural standard radio waves and includes memory means (I) which is able to store signal receiving order of the plural standard radio waves. Since the plural standard radio waves can be received, the influence of a radio wave situation according to an area can be reduced and a correction to the exact time can be made in a shorter time by using the standard radio wave transmitted every minute.

Radio corrected clock

A radio-controlled timepiece includes a regional-information storage unit that stores information on a target time region, a receiving circuit that receives a standard frequency that contains UTC time information, and that outputs a received signal, a regional-time calculating unit that calculates a current time of the target time region based on the information on the target time region and the received signal, a display unit that displays the current time calculated, a display-time correcting unit that corrects the current time to be displayed in DST or in standard time in timing determined based on the current time when information on a DST switching day is included in the received signal.

Radio-controlled timepiece, electronic device, time correcting method and computer product

The invention is directed to obtaining a radio controlled timepiece that, in a case when the user who uses it moves from one country or one region to another where the time difference is different, has simplified an operation of correcting the time difference between the countries or regions and an operation of correcting the time difference due to daylight saving time's being executed. To this end, the invention provides a radio controlled timepiecethat, in addition to the radio controlled timepiecein the prior art, it further includes offset time difference information storage meansthat stores an offset time difference between a country where reference time information is formed and a country where a standard radio wave has been received and daylight saving time information storage meansthat has stored therein for future use information on whether daylight saving time is being executed in the region where the standard radio wave has been received, and local standard time information forming meansthat, with respect to the reference time information of the standard radio wave that has been received in a particular region, executes calculation processing by using at least either one of offset time difference information with respect to the reference time information corresponding to the particular region and daylight saving time information in the particular region, to thereby form local standard time information in the particular region.

Radio controlled timepiece and method of controlling the same

An electronic device an antenna, an information processing apparatus for the purpose of processing information captured by the antenna, and a metal exterior parts capable of housing therewithin the antenna and the information processing apparatus, wherein the metal exterior parts is configured so that the antenna can receive magnetic flux from outside the metal exterior parts that has passed through the metal exterior parts and can resonate, and wherein at least a part of the metal exterior parts has an electrical resistance value that is different from another part of the metal exterior parts.

Growing community of inventors

Tokyo, Japan

Takashi Ihara