Remote control device having an energy source charged by a camera

• US 4,864,340 A
• Filed: 12/08/1987
• Issued: 09/05/1989
• Est. Priority Date: 12/15/1986
• Status: Expired due to Term

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Kaneko, Yoshiyuki
• Primary Examiner(s): Yusko, Donald J.
• Assistant Examiner(s): Pudpud, E. O.
• Application Number:
  US07/130,178
• Time in Patent Office: 637 Days
• Field of Search: 354/266, 354/288, 455/613, 455/618, 455/127, 455/343, 340/825.69, 340/825.72, 340/636, 315/241 R, 315/238, 315/241 P, 311/111, 311/143, 311/174, 311/173, 328/66, 328/37, 320/1, 320/2
• US Class Current: 396/59
• CPC Class Codes: G03B 17/38 Releasing-devices separate from shutter integral with shutter G03B9/08

Abstract

A remote control device has a transmitter provided with a transmission circuit for producing a remote control signal, a first capacitor of small capacity upon discharging to drive the transmission circuit, a second capacitor of large capacity upon discharging to charge the first capacitor, and a pair of terminals for charging the second capacitor from the outside of the transmitter.

Claims

1. A transmitter of a remote control device mountable and detachable from a camera, comprising:

input means for taking in energy from the camera when the transmitter is mounted on the camera,

said input means taking in no energy from the camera when the transmitter is detached from the camera, and,

storing means for storing the energy taken in by the input means from the camera to drive the transmitter with the stored energy.

2. A device according to claim 1, wherein said input means includes a terminal to be connected with a terminal on the camera side when the transmitter is mounted on the camera.

3. A device according to claim 1, wherein said storing means includes charging means for accepting an electric charge.

4. A device according to claim 3, wherein said charging means includes first charging means for accepting the electric charge taken in by the input means, and second charge means to be charged by said first charge means to drive the transmitter, said first charge means having a larger capacity than said second charge means.

5. A device according to claim 4, further comprising a transmitting portion to transmit a remote control signal, said transmitting portion being driven by current discharged by said second charge means.

6. A device according to claim 4, further comprising restricting means for restricting the output of energy from the storing means in response to the mounting of the transmitter on the camera.

7. A device according to claim 1, wherein said storing means comprises a capacitor.

8. A device according to claim 7, wherein said capacitor includes a first capacitor for storing the energy taken in by the input means, and a second capacitor to be charged with energy by the first capacitor to drive the transmitter, said first capacitor having a larger capacity than said second capacitor.

9. A device according to claim 8, further comprising a transmitting portion for transmitting a remote control signal, said transmitting portion being driven by the energy stored in said second capacitor.

10. A device according to claim 8, further comprising restricting means for restricting the output of energy from the first capacitor in response to the mounting of the transmitter on the camera.

11. A device according to claim 1, further comprising restricting means for restricting the output of energy from the storing means in response to the mounting of the transmitter on the camera.

12. A device according to claim 1, wherein said transmitter forms part of the camera when it is mounted on the camera body.

13. A transmitter of a remote control device mountable and detachable from a portable instrument, comprising:

input means for taking in energy from the portable instrument when the transmitter is mounted on the portable instrument,

said input means taking in no energy from the portable instrument when the transmitter is detached from the portable instrument, and,

storing means for storing the energy taken in by the input means from the portable instrument to drive the transmitter with the stored energy.

14. A device according to claim 13, wherein said input means includes a terminal to be connected with a terminal on the portable instrument side when the transmitter is mounted on the portable instrument.

15. A device according to claim 13, wherein said storing means includes charging means for accepting electric charge.

16. A device according to claim 15, wherein said charging means includes first charging means for accepting the electric charge taken in by the input means, and second charge means to be charged by said first charge means to drive the transmitter, said first charge means having a larger capacity than said second charge means.

17. A device according to claim 16, further comprising a transmitting portion to transmit a remote control signal, said transmitting portion being driven by current discharged by said second charge means.

18. A device according to claim 16, further comprising restricting means for restricting the output of energy from the storing means in response to the mounting of the transmitter on the portable instrument.

19. A device according to claim 13, wherein said storing means comprises a capacitor.

20. A device according to claim 19, wherein said capacitor includes a first capacitor for storing the energy taken in by the input means, and a second capacitor to be charged with energy by the first capacitor to drive the transmitter, said first capacitor having a larger capacity than said second capacitor.

21. A device according to claim 20, further comprising a transmitting portion for transmitting a remote control signal, said transmitting portion being driven by the energy stored in said second capacitor.

22. A device according to claim 20, further comprising restricting means for restricting the output of energy from the first capacitor in response to the mounting of the transmitter on the portable instrument.

23. A device according to claim 13, further comprising restricting means for restricting the output of energy from the storing means in response to the mounting of the transmitter on the portable instrument.

24. A device according to claim 13, wherein said transmitter forms part of the portable instrument when it is mounted on the portable instrument.

25. A camera having a transmitter of a remote control device mountable and detachable therefrom, comprising:

input means for taking in energy from the camera when the transmitter is mounted on the camera,

said input means taking in no energy from the camera when the transmitter is detached from the camera, and,

storing means for storing the energy taken in by the input means from the camera to drive the transmitter with the stored energy.

26. A camera according to claim 25, wherein said input means includes a terminal to be connected with a terminal on the camera side when the transmitter is mounted on the camera.

27. A camera according to claim 25, wherein said storing means includes charging means for accepting an electric charge.

28. A camera according to claim 27, wherein said charging means includes first charging means for accepting the electric charge taken in by the input means, and second charge means to be charged by said first charge means to drive the transmitter, said first charge means having a larger capacity than said second charge means.

29. A camera according to claim 28, further comprising a transmitting portion to transmit a remote control signal, said transmitting portion being driven by current discharged by said second charge means.

30. A camera according to claim 28, further comprising restricting means for restricting the output of energy from the storing means in response to the mounting of the transmitter on the camera.

31. A camera according to claim 25, wherein said storing means comprises a capacitor.

32. A camera according to claim 31, wherein said capacitor includes a first capacitor for storing the energy taken in by the input means, and a second capacitor to be charged with energy by the first capacitor to drive the transmitter, said first capacitor having a larger capacity than said second capacitor.

33. A camera according to claim 32, further comprising a transmitting portion for transmitting a remote control signal, said transmitting portion being driven by the energy stored in said second capacitor.

34. A camera according to claim 32, further comprising restricting means for restricting the output of energy from the first capacitor in response to the mounting of the transmitter on the camera.

35. A camera according to claim 25, further comprising restricting means for restricting the output of energy from the storing means in response to the mounting of the transmitter on the camera.

36. A camera according to claim 25, wherein said transmitter forms part of the camera when it is mounted on the camera body.

41. A device according to claim 46, further comprising a transmitting portion to transmit a remote control signal, said transmitting portion being driven by current discharged by said second charge means.

43. A device according to claim 32, wherein said storing means comprises a capacitor.

44. A device according to claim 43, wherein said capacitor includes a first capacitor for storing the energy taken in by the input means, and a second capacitor to be charged with energy by the first capacitor to drive the transmitter, said first capacitor having a larger capacity than said second capacitor.

45. A device according to claim 44, further comprising a transmitting portion for transmitting a remote control signal, said transmitting portion being driven by the energy stored in said second capacitor.

46. A device according to claim 44, further comprising restricting means for restricting the output of energy from the first capacitor in response to the mounting of the transmitter on the portable instrument.

37. A portable instrument having a transmitter of a remote control device mountable and detachable therefrom, comprising:

input means for taking in energy from the portable instrument when the transmitter is mounted on the portable instrument,

said input means taking in no energy from the portable instrument when the transmitter is detached from the portable instrument, and,

storing means for storing the energy taken in by the input means from the portable instrument to drive the transmitter with the stored energy.

38. A device according to claim 37, wherein said input means includes a terminal to be connected with a terminal on the portable instrument side when the transmitter is mounted on the portable instrument.

39. A device according to claim 37, wherein said storing means includes charging means for accepting an electric charge.

40. A device according to claim 39, wherein said charging means includes first charging means for accepting the electric charge taken in by the input means, and second charge means to be charged by said first charge means to drive the transmitter, said first charge means having a larger capacity than said second charge means.

42. A device according to claim 40, further comprising restricting means for restricting the output of energy from the storing means in response to the mounting of the transmitter on the portable instrument.

47. A device according to claim 37, further comprising restricting means for restricting the output of energy from the storing means in response to the mounting of the transmitter on the portable instrument.

48. A device according to claim 37, wherein said transmitter forms part of the camera when it is mounted on the portable instrument.