Kabushiki Kaisha Daini Seikosha

Seiko Instruments & Electronics Ltd.

Yasuo Kusumoto

Yoshiaki Hara

Takehiro Ishikawa

Shuji Kawamura

Joichi Miyazaki

Takuro Fukuichi

Masao Miyamoto

Sumio Fujita

Fumio Watanabe

Akira Yamazawa

Syojiro Komaki

A double grid anode is characterized in that said anode is comprised of a first cage-like anode made of a metal grid or wire gauze that permits that passage of electrons and that has an open end, a second anode which also consists of a metal grid or wire gauze located at the open end side of said first anode, a hot-cathode filament arranged around the outer periphery of said first anode, and an ion-extraction electrode which faces said anode.

Electron-impact type of ion source with double grid anode

An electronic clinical thermometer has a first oscillator producing a first temperature oscillating output signal, a second oscillator producing a second temperature oscillating output signal whose frequency is dependent on a measured temperature body temperature, a first counter and a second counter and operative to provide a gate signal after a predetermined number count. A first memory temporarily stores the count content of the first counter in response to the gate signal, and a second memory stores the count content of the first memory. A digital magnitude comparator compares the count content of the first and second memories and produces a corresponding comparison signal indicative of whether the count content of the first memory is greater or not greater than the count content of the second memory. A flip-flop circuit responds to the comparison signal to produce a control signal for controlling a switching circuit in dependence on the comparison signal so as to selectively switch either the count content of the first memory or the count content of the second memory, whichever is greater, to a decoder ROM which decodes the count content and applies decoded digital signals to a driving circuit for driving a display. The display always shows the maximum value of the measured bodily temperature and thus provides error-free temperature measurements.

Electronic clinical thermometer

A speech synthesizer, using linear predictive coding technique, obtains variable frame lengths by multiplying a pitch period by the number of repetitions, and interpolates PARCOR coefficients at a rate different than the interpolation of amplitude.

Speech synthesizer

A stop watch comprising a second hand and a subsecond hand includes manually actuatable switches for producing start, stop and reset instruction signals. A first stepping motor and a first drive controller for the stepping motor drives the second hand, while a second stepping motor and a second drive controller drives the subsecond hand. The second drive controller includes a counter for counting subsecond clock pulses in response to the start signal for effecting the display of the contents of the counter by the subsecond hand in response to the stop signal.

Stop watch

An electronic timepiece having an A.M. and P.M. display function. The characters A or P are displayed during time setting or correction by one discretionary display element of a plurality of display elements normally used for displaying time.

Electronic timepiece

A time adjusting system for an electronic timepiece has a discriminating circuit for discriminating between an advanced signal appearing during the first 30 seconds of a minute and a delayed signal appearing during the latter 30 seconds of the minute. In the advanced state, the supply of 1 HZ pulses to the time-measuring device is temporarily stopped for a time equivalent to the duration of the advanced time thereby delaying the time. In the delayed state, time adjusting pulses higher in frequency than the 1 HZ pulses are supplied to the time-measuring device in a number equal to the duration of the delayed time thereby advancing the time.

Time adjusting system for an electronic timepiece

A time indication setting circuit for accelerating or stopping the advance of the time indicating mechanism in an electronic timepiece. A delay circuit receives time pulses developed within the timepiece and the time pulses and delayed time pulses from the delay circuit are applied to a gate circuit. The gate circuit applies the time pulses and the delayed time pulses, under the control of a control circuit, to the timepiece drive train to drive the timepiece time indicating mechanism at a rate determined by the pulse repetition rate of the pulses applied to the drive train. The control circuit is manually operable to apply the control signal so the gate circuit applies both the time and the delayed time pulses to the drive train and thereby accelerates the advance of the time indicating mechanism, or to block both the time and the time indicating pulses and thereby stop the advance of the time indicating mechanism or to apply only the time pulses to the drive train so that the time indicating mechanism advances at a normal rate.

Growing community of inventors

Tokyo, Japan

Yasuo Kusumoto