Wireless display update system without a local power source

• US 20060071925A1
• Filed: 10/05/2004
• Published: 04/06/2006
• Est. Priority Date: 10/05/2004
• Status: Abandoned Application

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Adams, Lewis E. III, Wykoff, Richard C.
• Application Number:
  US10/959,279
• Publication Number:
  US 20060071925A1
• Time in Patent Office: Days
• US Class Current: 345/211
• CPC Class Codes: G06F 3/147 using display panels
• CPC Class Codes: G09G 2330/02 Details of power systems and of start or stop of display operation
• CPC Class Codes: G09G 2380/04 Electronic labels
• CPC Class Codes: G09G 3/3629 using liquid crystals having memory effects, e.g. ferroelectric liquid crystals

Abstract

According to some embodiments, a received radio frequency (RF) signal is used to power a display update system and a display device. The received radio frequency signal also includes information to update the display device. The display update system may include a voltage processing unit to derive power from the signal, a processor to demodulate, optionally decrypt, and optionally authenticate the signal.

Claims

1. An apparatus comprising:

an antenna; and

a display update system coupled to the antenna, the display update system to update a display device according to a signal received on the antenna;

wherein power to update the display device is derived from the signal received on the antenna.

2. The apparatus as recited in claim 1, the display update system further to authenticate the signal.

3. The apparatus as recited in claim 1, the display update system further to decrypt the signal.

4. The apparatus as recited in claim 1, wherein the display device is a magnetic technology bi-stable display device.

5. The apparatus as recited in claim 1, wherein the display device is a liquid crystal display bi-stable display device.

6. The apparatus as recited in claim 1, the display update system comprising a voltage processor to regulate power from the signal.

7. The apparatus as recited in claim 1, the display update system comprising storage to store a current state of the display device.

8. The apparatus as recited in claim 7, the display update system further comprising a processor to compare the current state of the display device with a desired state received in the signal.

9. The apparatus as recited in claim 8, the processor further to generate control signals for the display device.

10. The apparatus as recited in claim 1, the display update system further to send an acknowledgment signal via the antenna.

11. The apparatus as recited in claim 1, the display device to provide the display update system with a current state of the display device.

12. The apparatus as recited in claim 7, the display update system further comprising a processor to compare the current state of the display device with a desired state received in the signal.

13. A method comprising;

receiving a wireless update signal;

deriving power from the wireless update signal;

updating a display device according to information in the wireless update signal wherein the updating is powered by the power derived from the wireless update signal.

14. The method as recited in claim 13, further comprising sending a wireless status signal, wherein the sending is powered by the power derived from the wireless update signal.

15. The method as recited in claim 13, further comprising decrypting the wireless update signal.

16. The method as recited in claim 13, further comprising authenticating the wireless update signal.

17. The method as recited in claim 13, further comprising comparing a current state of the display device with a desired state of the display device, the desired state received in the wireless update signal.

18. The method as recited in claim 13, wherein the display device is a magnetic technology bi-stable display device.

19. The method as recited in claim 13, wherein the display device is a liquid crystal display bi-stable display device.

20. A system comprising:

a display update unit;

a display device coupled to the display update unit;

the display update unit to receive and derive power from a wireless signal, and to update the display device; and

wherein power to update the display device is derived from the wireless signal.

21. The system as recited in claim 20, the display update system further to authenticate the signal.

22. The system as recited in claim 20, the display update system further to decrypt the signal.

23. The system as recited in claim 20, wherein the display device is a magnetic technology bi-stable display device.

24. The system as recited in claim 20, wherein the display device is a liquid crystal display bi-stable display device.

25. The system as recited in claim 20, the display update system comprising a voltage processor to regulate power from the signal.

26. The system as recited in claim 20, the display update system comprising storage to store a current state of the display device.

27. The system as recited in claim 26, the display update system further comprising a processor to compare the current state of the display device with a desired state received in the signal.

28. The system as recited in claim 27, the processor further to generate control signals for the display device.

29. A method comprising:

transmitting a wireless signal to a display update system, the wireless signal including a desired display state to be reflected on a display device, the display update system deriving power from the wireless signal to update the display device.

30. The method as recited in claim 29, wherein the wireless signal is transmitted with an antenna tuned to an antenna on the display update system.

31. The method as recited in claim 29, further comprising encrypting the wireless signal.

32. The method as recited in claim 29, wherein the wireless signal includes authentication information.

33. The method as recited in claim 29, further comprising receiving a status signal from the display update system, the status signal indicating successful update of the display device.