Citizen Watch Company, Ltd.

Toshio Umemoto

Kenji Shimoda

Isamu Kobayashi

Yasuo Kitajima

Hiroyuki Kihara

Masami Fukuda

Toshio Hiruta

Kunikazu Mochida

Tomomi Murakami

Tetsuo Satoh

Singo Ichikawa

Masahiro Sase

Masato Yamada

Tatsuo Nitta

Yoshiaki Kato

Kenichi Yoshikawa

Hideo Uehara

Yoshio Katsuki

Yurie Udoh

Makoto Koshikawa

Yurie Udou

A time information management system with a simple configuration that instantaneously causes the individual time information of a plurality of timekeeping means within a prescribed area to coincide with standard time information, is formed by time information signal generating means that generates time information that includes standard time information, a time information adjusting means that includes within it a first timekeeping means, receives a time information signal, and outputs time information of the timekeeping means, and second timekeeping means,-,-,-n that are disposed in an area surrounding the time information adjusting means,, the time information adjusting means,including a standard time information extraction means for extracting standard time information from the time information signal of the time information signal generating means,, a standard time correcting means,that corrects the first timekeeping means,within the time information adjusting means,to the standard time information, and a time information output means,that causes output of the standard time from the first timekeeping means,, the standard time being received by the second timekeeping means and the kept time stored in the second timekeeping means being corrected based on the standard time.

Time information management system

A light transmitting metallic dial 50 is disposed above a cell 2 such as an EL device, a solar battery, or the like and the light transmitting type metallic dial 50 is secured by engaging an aligning portion 50b formed on the light transmitting type metallic dial 50 with an aligning portion 4b formed on a casing frame 4. In the light transmitting type metallic dial 50, light transmitting holes 50a and 51 constituting various characters, numerals, patterns, and the like are formed. Further, when the transparent plate is laminated on the light transmitting metallic dial 50, a clearance 7 is formed between the cell 2 and the transparent plate 5 using a spacer or the like.

Watch containing light transmitting metallic dial

Watch with light transmitting type display plate

In a wrist watch equipped with a receiving device, an antenna 19 having an antenna winding 19b, wound around an antenna core 19a with the end thereof being fixed, and having a conductible antenna terminal sheet 19d secured to an antenna winding frame 19c is inserted from a notch 10k in a dial 10 and secured with a screw 35 to an antenna support plate 33 which is secured to a circuit substrate 22, there by conducting the antenna 19 and the watch module. The construction ensures simplification of the watch module structure and easy conduction and securing of the antenna and the watch module and secured, with little influence on the receiving performance.

Electronic watch with an antenna for a receiving device

A device for measuring altitude and barometric pressure having a barometric pressure sensor, an amplifying circuit for amplifying the output signal from the pressure sensor, an analog to digital converter for converting the output signal from the amplifying circuit to a digital signal, and an altitude information generator for generating altitude information from the output signal of the analog to digital converter. A display displays the altitude information from the altitude information generator and the pressure information detected by the pressure sensor with pressure variation information and converts it into precise altitude information in accordance with temperature compensation data and altitude compensating data based upon regional and time information. The device may be used in climbing or the like with remarkable reliability.

Device for measuring altitude and barometric pressure

An electronic diving wristwatch having a pressure sensing depth meter provided in a projection on a case of the watch without interferring with the existing crown, pushbuttons, etc. The depth meter has a piezoelectric type sensing element which produces electrical output in response to the water pressure. The output is converted to a water depth which is displayed in a digital display window of the watch.

Wristwatch with pressure sensor

A battery assembly for electronic timepieces includes a frame and an electric battery supported in and securely fitted to the frame. The frame has a portion which acts to produce an engagement with a substrate of the timepiece to keep the battery in position.

Battery assembly for electronic timepieces

A solid state watch module construction including a plastic substrate and an electro-optical display cell directly mounted on the substrate. The substrate has an integrated circuit chip on one side thereof, and a plurality of printed circuit leads connected to electrical terminals of the integrated circuit chip. The electro-optical display cell has a plurality of electric terminals formed in rows in alignment with terminal ends of said printed circuit leads. The electro-optical display cell is bonded to the one side of the substrate and the electric terminals of the display cell are bonded to the terminal ends of the printed circuit leads.

Solid state watch module construction

Growing community of inventors

Tanashi, Japan

Toshio Umemoto