Electronic timepiece with internal antenna
AssigneeSeiko Epson Corporation
InventorTeruhiko Fujisawa
Life of this patent
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Abstract
An electronic timepiece with internal antenna maintains sufficiently high reception performance of circularly polarized waves even when having a metal external case. A drive unit of the timepiece counts a time inside the external case. An antenna has a tubular-shaped side part, a bottom part that covers one of two openings of the side part, and a top part that contacts an inside surface of the side part inside the external case. The bottom part is a back cover of the external case, and the top part has a slot part.
Claims12
An electronic timepiece with internal antenna, comprising:
- an external case;
- a drive unit within the external case that keeps time;
- an antenna that has a tube-shaped side part, a bottom part that covers one of two openings on the side part, and a top part that is in contact with an inside circumference of the side part within the external case;
- wherein the bottom part is a back cover of the external case, and the top part has a slot section in which is formed a slot extending circumferentially along at least a portion of the inside circumference of the side part, the slot section being a conductive part of the antenna.
An electronic timepiece with internal antenna comprising:
- an external case;
- a drive unit within the external case that keeps time;
- an antenna that has a tube-shaped side part, a bottom part that covers one of two openings on the side part, and a top part that is in contact with an inside circumference of the side part within the external case;
- a cover glass;
- and
- a photoelectric conversion panel that converts light energy into electrical energy;
- wherein the bottom part is a back cover of the external case, and the top part has a slot section;
- and
- wherein the photoelectric conversion panel is placed between the cover glass and the top part and is housed inside the slot section.
Dependencies are inferred from the claim text.