Video and audio transmission apparatus for vehicle surveillance system

• US 6,259,475 B1
• Filed: 10/07/1996
• Issued: 07/10/2001
• Est. Priority Date: 10/07/1996
• Status: Expired due to Fees

• Current Assignee: V-Com Technology Inc.
• Original Assignee: V-Com Technology Inc.
• Inventors: Srinivasan, Arvind, Junkins, Andrew, Antram, Howard E., Laier, Philip, Schuster, Raymond J., Ramachandran, Natarajan
• Primary Examiner(s): RAO, ANAND SHASHIKANT
• Application Number:
  US08/723,446
• Time in Patent Office: 1,737 Days
• Field of Search: 348/148, 348/113, 348/114, 348/115, 348/116, 348/117, 348/118, 348/149, 348/47, 340/901, 340/431, 340/435, 340/436, 340/903, 340/904, 455/89, 455/90, 455/95, 455/99
• US Class Current: 348/148
• CPC Class Codes: B60Q 1/0023 the element being a sensor, e.g. distance sensor, camera
• CPC Class Codes: H04N 7/18 Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast

Abstract

A video-audio surveillance system for a motor vehicle is suitable for observing blind spots as well as for providing security for the vehicle and its contents. The system includes audio-video transmission modules positioned at selected locations on the exterior and interior of the vehicle. An operator or observer either in the vehicle or otherwise monitors the video and audio signals from the modules through a monitoring unit.

Claims

1. Apparatus enabling viewing of surveillance areas in or adjacent to a motor vehicle, comprising:

a transmission module comprising;

a housing, wherein said housing has an interior area, said interior area bounded by a lens, wherein a surveillance area adjacent said housing is viewable from said interior area through said lens;

a camera mounted in said interior area, wherein said camera is operative to view said surveillance area through said lens;

a transmitter in operative connection with said camera, wherein said transmitter is operative to transmit video signals responsive to said camera;

an electrically powered device in said housing, wherein said device is not operatively associated with said camera or said transmitter, said

device being powered through at least one electrical line, wherein said transmitter is operatively connected with said electrical line, said transmitter responsive to signals superimposed on said line to control a condition of said transmitter.

2. The apparatus according to claim 1, wherein said housing includes a light of said vehicle.

3. The apparatus according to claim 1, wherein said housing includes a vehicle mirror.

4. The apparatus according to claim 1, wherein said transmitter includes a radio transmitter.

5. The apparatus according to claim 1, wherein said device includes a light bulb.

6. The apparatus according to claim 1 and further comprising a microphone in said housing, wherein said transmitter transmits audio and video signals responsive to said microphone and said camera, respectively.

7. The apparatus according to claim 1, wherein said transmitter transmits a signal signature with said video signals.

8. The apparatus according to claim 7, wherein said apparatus further comprises a decoder switch, wherein said decoder switch is in operative connection with said electric line and said transmitter, and wherein said decoder switch is operative to control the condition of said transmitter responsive to said superimposed signals.

9. The apparatus according to claim 1, wherein said superimposed signals include the frequency shift key modulated carrier.

10. The apparatus according to claim 1 and further comprising a rechargeable battery in said housing, wherein said rechargeable battery is in operative connection with said transmitter, and further comprising a current controller in operative connection with said electrical line, wherein said current controller is operative to charge said battery using power from said electrical line.

11. The apparatus according to claim 1 and further comprising a heater device in said interior area of said housing.

12. The apparatus according to claim 1 and further comprising a cooling device in said interior area of said housing.

13. The apparatus according to claim 1 and further comprising a heater/cooler device in said interior area of said housing.

14. The apparatus according to claim 13, wherein said heater/cooler device is a Peltier Effect heater/cooler.

15. The apparatus according to claim 1 and further comprising a humidity control device in said interior area of said housing.

16. The apparatus according to claim 15, wherein said humidity control device is replaceable moisture absorbent material.

17. The apparatus according to claim 1 and further comprising a wiper in operative connection with said lens.

18. The apparatus according to claim 17, wherein said wiper is operative responsive to said superimposed signals.

19. The apparatus according to claim 18, wherein said wiper comprises a rotatable ring adjacent said lens, wherein rotation of said ring is operative to wipe said lens.

20. The apparatus according to claim 1 and further comprising a plurality of said modules, said modules operative to view different surveillance areas, and wherein said superimposed signals are operative to selectively turn the transmitters in each of said modules on and off.

21. The apparatus according to claim 20, wherein all of said transmitters in said modules transmit said video signals on the same frequency.

22. The apparatus according to claim 21, wherein each of said modules transmits a signal signature with said video signals.

23. The apparatus according to claim 20 and further comprising a monitor unit, including a screen, wherein said video signals from said modules are received by said monitor unit and said screen is operative to display images responsive to said video signals, and wherein said monitor unit is operative to place said superimposed signals on said electrical line.

24. The apparatus according to claim 23, wherein said monitor unit is in operative connection with a plug connector engagable with an electrical cigarette lighter, wherein said monitor unit places said superimposed signals on said electrical line through said plug connector.

25. The apparatus according to claim 23, wherein said superimposed signals include a shift key modulated carrier.

26. The apparatus according to claim 23, wherein said monitor unit is in operative connection with an image reversal circuit, wherein said image reversal circuit is operative to reverse said images.

27. The apparatus according to claim 23, wherein said monitor unit is in operative connection with a scan oscillator, wherein said scan oscillator is operative to selectively activate said transmitters in said modules.

28. The apparatus according to claim 23, wherein each of said transmitters transmits a signal signature, and wherein said monitor unit is in operative connection with a scanning circuit, wherein said monitor unit is operative to display an image responsive to video signals from a module only if said module transmits said signal signature.

29. The apparatus according to claim 23, wherein at least one of said modules includes a microphone, and wherein said transmitter of said one module transmits video and audio signals, and wherein said monitor unit is in operative connection with at least one speaker, and wherein said speaker generates sound responsive to said audio signals.

30. The apparatus according to claim 29 and further comprising a filter circuit or a gain circuit, wherein said filter or gain circuit are operative respectively to attenuate sounds detected by said microphone within a first selected range of frequencies and to amplify sounds detected by said microphone within a second selected range of frequencies.

31. The apparatus according to claim 1 and further comprising at least one transparent removable layer on an exterior surface of said lens, whereby said layer is removable when viewing therethrough is obscured.

32. The apparatus according to claim 27, wherein at least one of said modules includes a microphone, and wherein said module transmits video and audio signals, and wherein said monitor unit is in operative connection with a speaker, and wherein said scan oscillator is operative to cause said monitor unit to output images and sounds responsive to signals from each module in a sequence.

33. The apparatus according to claim 32, wherein said sequence is programmable.

34. The apparatus according to claim 32, wherein said monitor unit is in operative connection with a manual selection device, wherein said manual selection device overrides said sequence.

35. Apparatus for viewing areas adjacent a motor vehicle comprising:

a monitor unit mounted on said vehicle, said monitor unit including a screen for displaying images;

a plurality of transmission modules disposed on said vehicle, each of said modules including a camera and a transmitter wherein each transmitter transmits wireless signals;

a discrimination device in operative connection with the monitor unit, wherein the discrimination device is operative to discriminate the wireless signals from

each of the transmitters on the vehicle from other wireless signals, and wherein said monitor unit selectively displays images on said screen responsive to said wireless signals from each of said transmission modules.

36. The apparatus according to claim 35, wherein each of said modules transmits signals at a different frequency, and wherein said monitor unit is operative to receive said different frequency signals.

37. The apparatus according to claim 35 and further comprising at least one of a radar detector, a motion detector, a sound detector, a flame detector, a smoke detector, or a temperature detector in operative connection with at least one said transmitter, wherein detection by said one detector is operative to cause said one transmitter to transmit said video signals.