Journal of the Horological Institute of Japan

[title in Japanese]

Article type: Cover
1983 Volume 107 Pages Cover1-
Published: December 15, 1983
Released on J-STAGE: November 09, 2017

DOIhttps://doi.org/10.20805/tokeieafj.107.0_Cover1

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[title in Japanese]

Article type: Cover
1983 Volume 107 Pages Cover2-
Published: December 15, 1983
Released on J-STAGE: November 09, 2017

DOIhttps://doi.org/10.20805/tokeieafj.107.0_Cover2

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Chronometry

Yasuo ZIMBO

Article type: Article
1983 Volume 107 Pages 3-7
Published: December 15, 1983
Released on J-STAGE: November 09, 2017

DOIhttps://doi.org/10.20805/tokeieafj.107.0_3

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Horological Institute of Japan uses a word "Horology" to express its field of activities. On the other hand European societies such as Societe Suisse de Chronomotrie or Deutsche Gesellschaft fur Chronometrie use a word "Chronometry" to express their field of activities. The words horology and chronometry have a slight difference in their meaning. But in present case both Japanese and European societies have the same field of activities. The difference of the adoption of word is derived only from the historical reason.

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Development of TV-WATCH

M Toyoda, M Murata, Y. Wakai

Article type: Article
1983 Volume 107 Pages 8-21
Published: December 15, 1983
Released on J-STAGE: November 09, 2017

DOIhttps://doi.org/10.20805/tokeieafj.107.0_8

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We have succeeded in installing a television display in a wristwatch by using mono-silicon active matrix LSI and Guest-Host LC. We call it "TV-WATCH". The system of TV-WATCH consists of a receiver, a wrist TV and a headphone, and further the wrist TV can be used as a watch with multi-functions. In this paper, we describe the system and technical points of TV-WATCH.

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Development of a Speech Synthesis LSI Fabricated with the PARCOR System

Sumio FUJITA, Masami TAKAI, Kazuyuki TANAKA, Takuro FUKUICHI

Article type: Article
1983 Volume 107 Pages 22-36
Published: December 15, 1983
Released on J-STAGE: November 09, 2017

DOIhttps://doi.org/10.20805/tokeieafj.107.0_22

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A speech synthesis LSI operating at a low voltage and with a low power consumption has been developed, the electric characteristics of which are fit to the application to watches. The LSI consumes as low as 1.5 μW (max.) in standby condition and only 600 μW (max.) even when in operation, and it works at low voltage from 2.3 to 5.5. By adopting the variable frames on PARCOR, the LSI is capable to synthesize speech to a higher degree with a low bite rate.

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On the Temperature Dependence of Apparatus Constant for Vibrating Densimeter Made of Glass Tube

Osamu SENDA

Article type: Article
1983 Volume 107 Pages 37-48
Published: December 15, 1983
Released on J-STAGE: November 09, 2017

DOIhttps://doi.org/10.20805/tokeieafj.107.0_37

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The change in the apparatus constant for vibrating densimeter made of glass tube observed under the ambient temperature change has been proved to be attributed to the following two main factors, one is the temperature dependence related with its dimension and elastic property, and the other is the change in the equivalent mass of the vibrator. The effect of these two factors has been studied by the theoretical and experimental analyses. Two kinds of glass tubes, one made of ordinary glass and the other made of fused quartz, have been used in this experiment. Experimental results show that the temperature dependence of the apparatus constant for the ordinary glass tube is larger than that for the fused quartz one. This phenomenon has been explained by the difference in the linear expansion coefflcient between them.

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Characteristics of Quartz Watches under Humid Atmosphere

Toshiyuki TAKIZAWA

Article type: Article
1983 Volume 107 Pages 49-50
Published: December 15, 1983
Released on J-STAGE: November 09, 2017

DOIhttps://doi.org/10.20805/tokeieafj.107.0_49

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Experiments on the behavior of quartz watches (sample : 8 pcs.) under humid atmosphere were carried out at the Japan Horological Inspection Institute (JHI). Results of the experiments have been already published elsewhere. From the results, the following conclusions may be deduced : Quartz watches were proved to be affected by humidity, and quantity of the rate variations to vary with type of movement or module and with structure of the watch cases. The rate variations were observed for the watches the cases of which were closed, with the lapse of time. We think, therefore, humidity effect cannot be disregarded for the accurate evaluation of quartz watches. In case of drawing up a draft standard on accuracy indication for quartz watches, which is under deliberation by the International Organization for Stand. ardization (ISO), it may be necessary to introduce the humidity test into the draft standard as one of the performance tests. As the whole results have been reported in the Annual Report of Study and Research of JHI for 1982, the readers are requested to refer it.

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[title in Japanese]

[in Japanese]

Article type: Article
1983 Volume 107 Pages 51-67
Published: December 15, 1983
Released on J-STAGE: November 09, 2017

DOIhttps://doi.org/10.20805/tokeieafj.107.0_51

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[title in Japanese]

[in Japanese]

Article type: Article
1983 Volume 107 Pages 68-72
Published: December 15, 1983
Released on J-STAGE: November 09, 2017

DOIhttps://doi.org/10.20805/tokeieafj.107.0_68

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