Cordless pressure-sensitivity and electromagnetic-induction system with specific frequency producer and two-way transmission gate control circuit

• US 20030079921A1
• Filed: 11/01/2001
• Published: 05/01/2003
• Est. Priority Date: 11/01/2001
• Status: Active Grant

• Current Assignee: Waltop International Corp.
• Original Assignee: Aiptek International Incorporated (Aiptek Incorporated)
• Inventors: Yeh, Chia Jui
• Granted Patent: US 6,862,018 B2
• Time in Patent Office: Days
• US Class Current: 178/18.07
• CPC Class Codes: G06F 3/046 by electromagnetic means

Abstract

The system with cordless pressure-sensitivity and electromagnetic-induction of the present invention comprises the first wireless apparatus and the second wireless apparatus. The first wireless apparatus comprises the first sub-circuit for emitting and receiving an electromagnetic wave with a specific frequency, and the second wireless apparatus comprises the second sub-circuit for emitting and receiving an electromagnetic wave with a specific frequency. The first sub-circuit comprises: an inductance coil, a rectifier that is coupled with the inductance coil and a charge sub-circuit. The second sub-circuit comprises: a sub-circuit for generating a specific frequency that is coupled with the control sub-circuit and a two-way gate control sub-circuit.

Claims

1. A system with cordless pressure-sensitivity and electromagnetic-induction, said system comprising:

a first sub-circuit for generating control signal;

a second sub-circuit coupled to receive control signal for generating a specific frequency;

a third sub-circuit coupled to receive control signal and receive said specific frequency in accord with control signal;

a fourth sub-circuit coupled to receive control signal and receive said specific frequency from said third sub-circuit in accord with control signal; and

an antenna loop, said fourth sub-circuit coupled to control said antenna loop, so as to emit the electromagnetic wave with said specific frequency via said antenna loop.

2. The system with cordless pressure-sensitivity and electromagnetic-induction according to claim 1, wherein said first sub-circuit comprises a frequency control bus that is coupled with said second sub-circuit.

3. The system with cordless pressure-sensitivity and electromagnetic-induction according to claim 2, wherein said first sub-circuit can transmit a value of 8 bits into said second sub-circuit via said frequency control bus.

4. The system with cordless pressure-sensitivity and electromagnetic-induction according to claim 1, wherein said first sub-circuit comprises an I/O control terminal that is coupled with said third sub-circuit.

5. The system with cordless pressure-sensitivity and electromagnetic-induction according to claim 1, wherein said first sub-circuit comprises an antenna address bus that is coupled with said fourth sub-circuit.

6. The system with cordless pressure-sensitivity and electromagnetic-induction according to claim 1, wherein said second sub-circuit comprises a sub-circuit for generating specific frequency that can perform a dividing process.

7. The system with cordless pressure-sensitivity and electromagnetic-induction according to claim 6, wherein said sub-circuit for generating specific frequency comprises a plurality of programmable frequency dividers.

8. The system with cordless pressure-sensitivity and electromagnetic-induction according to claim 6, wherein said sub-circuit for generating specific frequency comprises a flip-flop device.

9. The system with cordless pressure-sensitivity and electromagnetic-induction according to claim 1, wherein said third sub-circuit comprises a two-way gate control sub-circuit.

10. The system with cordless pressure-sensitivity and electromagnetic-induction according to claim 9, wherein said two-way gate control sub-circuit comprises a plurality of one-way gates whose transmitting directions are different from each other.

11. The system with cordless pressure-sensitivity and electromagnetic-induction according to claim 1, wherein said fourth sub-circuit comprises a sub-circuit for switching antenna.

12. The system with cordless pressure-sensitivity and electromagnetic-induction according to claim 11, wherein said sub-circuit for switching antenna is coupled with said antenna loop.

13. The system with cordless pressure-sensitivity and electromagnetic-induction according to claim 11, wherein said sub-circuit for switching antenna comprises a plurality of antenna switches.

14. The system with cordless pressure-sensitivity and electromagnetic-induction according to claim 1, wherein said antenna loop comprises a plurality of two-way antennas.

15. A circuit for generating specific frequency of a system with cordless pressure-sensitivity and electromagnetic-induction, said circuit comprising:

an NAND gate whose input terminal coupled to receive a clock signal with a first frequency;

a sub-circuit for dividing frequency coupled to receive a control signal, and said sub-circuit for dividing frequency is coupled with the output terminal of said NAND gate to receive said clock signal with said first frequency, wherein said sub-circuit for dividing frequency perform a first process for dividing frequency to generate a clock signal with a second frequency according to said control signal; and

a flip-flop device that is coupled with said sub-circuit for dividing frequency to receive said clock signal with said second frequency, so as to perform a second process for dividing frequency and generate a clock signal with a third frequency.

16. The circuit for generating specific frequency according to claim 15, wherein said NAND gate comprises a clock input terminal for receiving said clock signal with said first frequency.

17. The circuit for generating specific frequency according to claim 15, wherein said NAND gate comprises a clock enable terminal to control input of said clock signal with said first frequency.

18. The circuit for generating specific frequency according to claim 15, wherein said control signal comprises a value of 8 bits, and said first process for dividing frequency can be performed according to said value of 8 bits, so as to generate said clock signal with said second frequency.

19. The circuit for generating specific frequency according to claim 15, wherein said sub-circuit for dividing frequency comprises a plurality of programmable frequency dividers that are coupled with a frequency control bus to receive said control signal.

20. The circuit for generating specific frequency according to claim 15, wherein said clock signal with said second frequency comprises a frequency arrangement about between said first frequency/256 and said first frequency/1.

21. The circuit for generating specific frequency according to claim 15, wherein said flip-flop device comprises a D-type flip-flop device.

22. The circuit for generating specific frequency according to claim 15, wherein said flip-flop device comprises a specific frequency enable terminal coupled to control said second process for dividing frequency.

23. The circuit for generating specific frequency according to claim 15, wherein said flip-flop device comprises a specific frequency output terminal coupled to transmit said clock signal with said third frequency.

24. The circuit for generating specific frequency according to claim 15, wherein said clock signal with said third frequency comprises a frequency arrangement about between said first frequency/512 and said first frequency/ 2.

25. A circuit for transmitting antenna signal of a system with cordless pressure-sensitivity and electromagnetic-induction, said circuit comprising:

a two-way gate control sub-circuit coupled to receive a first control signal and transmit a clock signal with a specific frequency, wherein said two-way gate control sub-circuit can control the transmitting direction of said clock signal with said specific frequency according with said first control signal;

a sub-circuit for switching antenna coupled to receive a second control signal, and said sub-circuit for switching antenna is coupled with said two-way gate control sub-circuit to transmit said clock signal with said specific frequency; and

an antenna loop that is coupled with said sub-circuit for switching antenna to emit and receive electromagnetic wave, wherein said sub-circuit for switching antenna control said antenna loop according with said second control signal.

26. The circuit for transmitting antenna signal according to claim 25, wherein said two-way gate control sub-circuit is coupled with an amplifier of said system with cordless pressure-sensitivity and electromagnetic-induction.

27. The circuit for transmitting antenna signal according to claim 25, wherein said two-way gate control sub-circuit is coupled with a micro-controller of said system with cordless pressure-sensitivity and electromagnetic-induction to receive said first control signal.

28. The circuit for transmitting antenna signal according to claim 25, wherein said two-way gate control sub-circuit is coupled with a sub-circuit for generating specific frequency of said system with cordless pressure-sensitivity and electromagnetic-induction to receive said clock signal with said specific frequency.

29. The circuit for transmitting antenna signal according to claim 25, wherein said two-way gate control sub-circuit comprises a plurality of one-way gates whose transmitting directions are different from each other.

30. The circuit for transmitting antenna signal according to claim 25, wherein said sub-circuit for switching antenna comprises a plurality of two-way transmission switches that are controlled via an antenna address bus by said second control signal.

31. The circuit for transmitting antenna signal according to claim 25, wherein said antenna loop comprises a plurality of two-way antennas.

32. A circuit with two-way transmission and electromagnetic induction of a system with cordless pressure-sensitivity and electromagnetic-induction, said circuit comprising:

a specific frequency generator that is connected with a micro-controller of said system with cordless pressure-sensitivity and electromagnetic-induction;

a two-way gate control device that is connected with said micro-controller and said specific frequency generator;

a antenna switch group that is connected with said micro-controller and said two-way gate control device; and

a two-way antenna loop that is connected with said antenna switch group.

33. The circuit with two-way transmission and electromagnetic induction according to claim 32, wherein said specific frequency generator comprises:

a plurality of programmable frequency divider that are connected with said micro-controller;

a NAND gate whose output terminal is coupled with said plurality of programmable frequency divider; and

a flip-flop device that is connected with said plurality of programmable frequency divider and said two-way gate control device.

34. The circuit with two-way transmission and electromagnetic induction according to claim 33, wherein said flip-flop device comprises a D-type flip-flop device.

35. The circuit with two-way transmission and electromagnetic induction according to claim 32, wherein said two-way gate control device comprises:

a first one-way gate that is connected with an amplifier of said system with cordless pressure-sensitivity and electromagnetic-induction;

a NOT gate that is connected with said first one-way gate to form an input node, and said input node is connected with said micro-controller; and

a second one-way gate that is connected with said NOT gate and said flip-flop device, wherein said second one-way gate is connected with said first one-way gate to form an output node.

36. The circuit with two-way transmission and electromagnetic induction according to claim 35, wherein the transmitting direction of said second one-way gate is different from transmitting direction of said first one-way gate.

37. The circuit with two-way transmission and electromagnetic induction according to claim 32, wherein said antenna switch group comprises a plurality of two-way antenna switches.

38. The circuit with two-way transmission and electromagnetic induction according to claim 32, wherein said two-way antenna loop comprises a plurality of two-way antennas.

39. A circuit with two-way transmission and electromagnetic induction of a system with cordless pressure-sensitivity and electromagnetic-induction, said circuit comprising:

a first programmable frequency divider that is connected with a NAND gate;

a second programmable frequency divider that is connected with said first programmable frequency divider to form a first node and a second node, wherein said first node is connected with a micro-controller of said system with cordless pressure-sensitivity and electromagnetic-induction by way of using a frequency control bus;

a D-type flip-flop device that is connected with said second node;

a first one-way gate that is connected with an amplifier of said system with cordless pressure-sensitivity and electromagnetic-induction;

an NOT gate whose the input terminal is connected with said first one-way gate to form a third node, wherein said third node is connected with a I/O control terminal of said micro-controller;

a second one-way gate that is connected with the output terminal of said NOT gate and said D-type flip-flop device, wherein said second one-way gate and said first one-way gate are connected from each other to form a fourth node;

a plurality of two-way antenna switches that are connected with said fourth node, wherein said plurality of two-way antenna switches are connected with said micro-controller by way of using an antenna address bus; and

a plurality of two-way antennas that are connected with said plurality of two-way antenna switches.

40. The circuit with two-way transmission and electromagnetic induction according to claim 39, wherein said NAND gate comprises a clock enable terminal.

41. The circuit with two-way transmission and electromagnetic induction according to claim 39, wherein said NAND gate comprises a clock input terminal.

42. The circuit with two-way transmission and electromagnetic induction according to claim 39, wherein said D-type flip-flop device comprises a specific frequency enable terminal.

43. The circuit with two-way transmission and electromagnetic induction according to claim 39, wherein said D-type flip-flop device comprises a specific frequency output terminal that is connected with said second one-way gate.

44. The circuit with two-way transmission and electromagnetic induction according to claim 39, wherein the transmitting direction of said first one-way gate is a receiving direction.

45. The circuit with two-way transmission and electromagnetic induction according to claim 39, wherein the transmitting direction of said second one-way gate is an emitting direction.

46. The circuit with two-way transmission and electromagnetic induction according to claim 39, wherein every one of said plurality of two-way antenna switches can control at least eight antennas.

47. A induced-charge circuit of a system with cordless pressure-sensitivity and electromagnetic-induction, said induced-charge circuit comprising:

an inductance coil for receiving the electromagnetic wave with a specific frequency, wherein said inductance coil can generate an induced-current according to the electromagnetic induction;

a first sub-circuit that is coupled with said inductance coil to receive said induced-current, so as to perform a rectification;

a second sub-circuit that is coupled with said first sub-circuit to control charge process; and

a charge device that is coupled with said second sub-circuit to perform charge process.

48. The induced-charge circuit according to claim 47, wherein said first sub-circuit comprises a rectifier.

49. The induced-charge circuit according to claim 48, wherein said rectifier comprises:

a diode device whose one terminal is coupled with a first terminal of said inductance coil to form a first node;

a capacitor whose one terminal is coupled with the other terminal of said diode device to form a second node, wherein said second node is coupled with said second sub-circuit;

a first resister whose one terminal is coupled with said first node and the other terminal of said first resister is coupled with the second terminal of said inductance coil to form a third node, wherein said third node is coupled with the other terminal of said capacitor; and

a second resister whose one terminal is coupled with said second node and the other terminal of said second resister is coupled with said third node.

50. The induced-charge circuit according to claim 47, wherein said charge device comprises a rechargeable battery.

51. A induced-charge circuit of a system with cordless pressure-sensitivity and electromagnetic-induction, said induced-charge circuit comprising:

an inductance coil;

a diode device whose one terminal is connected with a first terminal of said inductance coil to form a first node;

a capacitor whose one terminal is connected with the other terminal of said diode device to form a second node;

a first resister whose one terminal is connected with said first node and the other terminal of said first resister is connected with the second terminal of said inductance coil to form a third node, wherein said third node is connected with the other terminal of said capacitor;

a second resister whose one terminal is connected with said second node and the other terminal of said second resister is connected with said third node;

a sub-circuit for controlling charge process that is connected with said second node; and

a rechargeable battery that is connected with said sub-circuit for controlling charge process.