Multimode digital timepiece

Details Multimode digital timepiece Multimode digital timepiece

1988-08-22

1990-04-24

Roskoski, Bernard

Horology: time measuring systems or devices

Displays or display device details

Optical

368241, G04C 1702

Patent

active

049205242

ABSTRACT:
The dial of a timepiece is provided with a first circular array of twelve blue LEDs indicating hours, a second next-outermost array of sixty red LEDs indicating minutes, and a third next-outermost array of sixty green LEDs indicating seconds. Every fifth red "minute" LED is distinct from the intermediate "minute" LEDs in that it is either spaced farther apart from the adjacent LEDs or is larger than the adjacent LEDs, or both. A switch is provided in the timing circuit of the timepiece to select between a "normal" mode of operation wherein the sixty "minute" LEDs are energized in sequence, at the passage of each minute and a "teaching" mode of operation wherein only every fifth "minute" LED is energized, in sequence, at the passage of each five minute interval. The timepiece may be a watch, a clock or the like.

REFERENCES:
patent: 3958409 (1976-05-01), Manber
patent: 4007583 (1977-02-01), Johnson
patent: 4041692 (1977-08-01), Marshino
patent: 4254487 (1981-03-01), Lee
patent: 4370068 (1983-01-01), Han

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