Electronic device and wristwatch

Patent metadata

Field	Value
Publication number	US-9411315-B2
Application number	US-201514613184-A
Country	US
Kind code	B2
Filing date	Feb 3, 2015
Priority date	Mar 18, 2014
Publication date	Aug 9, 2016
Grant date	Aug 9, 2016

Abstract

The present invention includes a wristwatch case provided with a watch glass, a dial plate provided in the wristwatch case, and a timepiece module arranged below the dial plate, and the timepiece module has a first antenna arranged in its one end portion so as to receive a high-frequency radio wave for GPS and a second antenna arranged in the other end portion opposing the first antenna so as to receive a standard time radio wave whose frequency differs from that of a radio wave to be received by the first antenna. Accordingly, radio waves for GPS can be received by the first antenna and standard time radio waves can be received by the second antenna arranged opposing the first antenna.

First claim

What is claimed is:

1. An electronic device comprising:
a case;
a dial plate provided in the case;
a module arranged below the dial plate;
a first antenna arranged in an end portion of the module; and
a second antenna arranged in another end portion of the module so as to receive a radio wave having a frequency differing from a frequency of a radio wave to be received by the first antenna,
wherein the second antenna is arranged on an extended line which extends a straight line connecting a center of the first antenna and a through hole provided in a center portion of the dial plate, from the center of the first antenna toward the through hole.

2. The electronic device according to claim 1 , wherein the module includes a pointer shaft inserted into the through hole.

3. The electronic device according to claim 2 , wherein the dial plate is made of a light transmissive material, and a solar panel which receives extraneous light and generates electricity is arranged between the dial plate and the module.

4. The electronic device according to claim 3 , wherein a non-power generation section is provided in the solar panel in an area which corresponds to an area of at least an upper portion of the first antenna.

5. The electronic device according to claim 4 , wherein the dial plate has a pattern that is line-symmetric with respect to a straight line connecting a twelve o'clock point and a six o'clock point, and
wherein a boundary line between the solar panel and the non-power-generation section is tilted at a predetermined angle with respect to the pattern.

6. The electronic device according to claim 5 , wherein the pattern is cyclically formed at predetermined intervals.

7. The electronic device according to claim 2 ,
wherein a first sub-display section having one short pointer and a second sub-display section having two short pointers are arranged to sides of the first antenna, and
wherein the first sub-display section is positioned closer to the first antenna than the second sub-display section, and the first antenna is positioned close to an axis of the short pointer of the first sub-display section.

8. The electronic device according to claim 3 ,
wherein a first sub-display section having one short pointer and a second sub-display section having two short pointers are arranged to sides of the first antenna, and
wherein the first sub-display section is positioned closer to the first antenna than the second sub-display section, and the first antenna is positioned close to an axis of the short pointer of the first sub-display section.

9. The electronic device according to claim 4 ,
wherein a first sub-display section having one short pointer and a second sub-display section having two short pointers are arranged to sides of the first antenna, and
wherein the first sub-display section is positioned closer to the first antenna than the second sub-display section, and the first antenna is positioned close to an axis of the short pointer of the first sub-display section.

10. The electronic device according to claim 1 , wherein the dial plate is made of a light transmissive material, and a solar panel which receives extraneous light and generates electricity is arranged between the dial plate and the module.

11. The electronic device according to claim 10 , wherein a non-power generation section is provided in the solar panel corresponding to in an area which corresponds to an area of at least an upper portion of the first antenna.

12. The electronic device according to claim 11 ,
wherein the dial plate has a pattern that is line-symmetric with respect to a straight line connecting a twelve o'clock point and a six o'clock point, and
wherein a boundary line between the solar panel and the non-power-generation section is tilted at a predetermined angle with respect to the pattern.

13. The electronic device according to claim 12 , wherein the pattern is cyclically formed at predetermined intervals.

14. The electronic device according to claim 13 ,
wherein a first sub-display section having one short pointer and a second sub-display section having two short pointers are arranged to sides of the first antenna, and
wherein the first sub-display section is positioned closer to the first antenna than the second sub-display section, and the first antenna is positioned close to an axis of the short pointer of the first sub-display section.

15. The electronic device according to claim 10 ,
wherein a first sub-display section having one short pointer and a second sub-display section having two short pointers are arranged to sides of the first antenna, and
wherein the first sub-display section is positioned closer to the first antenna than the second sub-display section, and the first antenna is positioned close to an axis of the short pointer of the first sub-display section.

16. The electronic device according to claim 11 ,
wherein a first sub-display section having one short pointer and a second sub-display section having two short pointers are arranged to sides of the first antenna, and
wherein the first sub-display section is positioned closer to the first antenna than the second sub-display section, and the first antenna is positioned close to an axis of the short pointer of the first sub-display section.

17. The electronic device according to claim 12 ,
wherein a first sub-display section having one short pointer and a second sub-display section having two short pointers are arranged to sides of the first antenna, and
wherein the first sub-display section is positioned closer to the first antenna than the second sub-display section, and the first antenna is positioned close to an axis of the short pointer of the first sub-display section.

18. The electronic device according to claim 1 ,
wherein a first sub-display section having one short pointer and a second sub-display section having two short pointers are arranged to sides of the first antenna, and
wherein the first sub-display section is positioned closer to the first antenna than the second sub-display section, and the first antenna is positioned close to an axis of the short pointer of the first sub-display section.

19. The electronic device according to claim 1 ,
wherein the dial plate comprises time indicator marks indicating the time;
wherein the first antenna is arranged in an area located from around a time indicator mark indicating four o'clock via a time indicator mark indicating five o'clock to around a time indicator mark indicating six o'clock, and
wherein the second antenna is arranged in an area located from around a time indicator mark indicating ten o'clock via a time indicator mark indicating eleven o'clock to around a time indicator mark indicating twelve o'clock.

20. The electronic device according to claim 1 , wherein a center of the second antenna is arranged on the extended line which extends the straight line connecting the center of the first antenna and the through hole provided in the center portion of the dial plate, from the center of the first antenna toward the through hole.

21. The electronic device according to claim 1 , wherein a portion of the second antenna is arranged along a portion of said another end portion which is located within a range of 100 degrees centering on the through hole and a middle of which is located on an intersection of a straight line connecting a twelve o'clock point and a six o'clock point and said another end portion of the timepiece module.

Assignees

• Casio Computer Co Ltd

Inventors

• Sawada Makoto

Classifications

• G04R20/08

  the radio signal being broadcast from a long-wave call sign, e.g. DCF77, JJY40, JJY60, MSF60 or WWVB · CPC title

• G04B19/065 Primary

  with several parts · CPC title

• G04R60/10

  inside cases · CPC title

• G04R20/02

  the radio signal being sent by a satellite, e.g. GPS · CPC title