Citizen watch co., ltd have commercialized radio controlled watches for 12 years and succeeded in the development of the full metal base radio controlled watch which is using cal. H41 movement two years ago. This year, we have also accomplished the development of the micro miniature cal. H33 movement which is available for a full metal base radio controlled watch for women. We will report the two systems which is needed to realize the micro miniature cal. H33 movement at the next section. One is an antenna system and the other is an circuit system including the receiver circuit.

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Short-term memory test and spatial recognition test with images are investigated for detecting dementia at the early stage or pre-clinical stage. It is important to track subjects' eye-gaze points on images of the test. The authors revealed the difficulty of using eye-gaze tracking system, which is on the market, to elderly people by the results of experiment with a total of 80 subjects included their age of seventies to nineties. The factors of difficulty were the physical aging such as curve of back born, wrinkles on eyelid, watery eye, scar of surgery for cataract, and presbyopia. As the solutions, the authors unified CCD camera with Face-Mounted Display and decided the best position of CCD camera and Infrared LED (IRED). The authors also adopted the method of tracking center coordinate of pupil by image processing instead of corneal reflection method. The experimental results showed that eye-gaze tracking with FMD-type eye camera was successful.

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The elastic hinge mechanism has been widely applied for fine positioning mechanism because it has an ability to be precise behavior by the simple and integral structure. The circular hinge which has a small rotation function in that mechanism has two faults. One is that the fatigue fracture is easily generated by the stress concentration. The other is that elasticity domain is too narrow. We present a new type circular hinge: Wider range hinges having a elongate linear part which has strong fatigue structure and has wide range elastic domain. We have constructed a 3-D Wide range arc hinge mechanism and using this mechanism we also have manufactured 5μm, 3μm and 1μm rules on the aluminum plate.

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In this research, we propose a new method to make the robot thin and light; we try to process the joint and the link together in one thin board as a robot, and we use the elastic deformation spring. The actual trajectory and stress strain analysis by FEM of the special designed spiral spring are discussed. Our manipulator of which specifications are thickness 0.6mm, weight 3.38g, width 20mm〜30mm, height 70mm. This is manufactured, and functions of arc movement, parallel movement, and gripping motions have been achieved by a simple controller.

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In autumn this year, visiting Dr. George Daniels and some other watch and clock makers in England, author found all of them were trying to develop the historical grasshopper escapement, besides the main purpose of visit was a discussion with him about coaxial escapement. Then author has been awaken the whole of British horological interest was widely spread and related into the historical facts and researches as to John Harrison as so many columns had been in British Horological Journal. Even an event of "Evening of John Harrison" will be held this November. It would be due to a long and great history of horology of England. An explanation of grasshopper escapement mechanism is done, pointing out the merit of unnecessity of lubrication.

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