Pulse frequency modulation for induction charge device

• US 7,151,357 B2
• Filed: 07/30/2004
• Issued: 12/19/2006
• Est. Priority Date: 07/30/2004
• Status: Expired due to Fees

• Current Assignee: KYE Systems Corporation
• Original Assignee: KYE Systems Corporation
• Inventors: Lu, Shi-Hao, Xian, Bo-Xun, Zheng, Ren-Kai
• Primary Examiner(s): Easthom, Karl
• Assistant Examiner(s): Berhanu, Samuel
• Application Number:
  US10/902,001
• Publication Number:
  US 20060022636A1
• Time in Patent Office: 872 Days
• Field of Search: 320/106, 320/108, 320/128
• US Class Current: 320/108
• CPC Class Codes: G06F 3/03543 Mice or pucks G06F3/03541 takes precedence
• CPC Class Codes: G06F 3/0383 Signal control means within the pointing device
• CPC Class Codes: G06F 3/039 Accessories therefor, e.g. mouse pads
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 7/00304 Overcurrent protection
• CPC Class Codes: H02J 7/0044 specially adapted for holding portable devices containing batteries H02J7/0045 takes precedence

Abstract

The present invention is related to a pulse frequency modulation for induction charge device, which comprises a pulse frequency modulation for induction charge device being provided to charge a portable electronic device, wherein, the portable electronic device comprises a induction coil, which comprises: an electric magnetic field generate and the secondary coil react circuit; a detection and modulation generate circuit; and a control switch circuit; whereby, the detection and modulation generate circuit could generate pulse singles with various frequencies according to the load varying generated due to distance varying between the portable electronic device and the charged device, and charge to the portable electronic device according the pulse singles so as to reach the goal of effective management the power.

Claims

1. An induction charge device assembly comprising:

a) a portable electronic device having an induction coil; and

b) an induction charge device having;

I) an electric magnetic field generate and secondary coil react circuit electrically and magnetically coupled to the induction coil of the portable electronic device and controlling an electromagnetic varying of an electric magnetic field according to a load varying based on a distance between the portable electronic device and the induction charge device;

ii) a detection and modulation generate circuit being a pulse frequency modulation generate circuit electrically connected to the electric magnetic field generate and secondary coil react circuit and detecting the electromagnetic varying and outputting pulse signals having frequencies corresponding to the electromagnetic varying;

iii) a control switch circuit electrically connected to the electric magnetic field generate and secondary coil react circuit and selectively turning on and off a transistor switch based on the pulse signals; and

iv) a power module electrically connected to the control switch circuit and providing power thereto,

wherein a charge from the induction charge device to the portable electronic device is adjusted according to the pulse signals based on a distance between the portable electronic device and the induction charge device.

2. The induction charge device assembly according to claim 1, wherein the portable electronic device is selected from a group consisting of a wireless home appliance and a wireless computer peripheral device.

3. The induction charge device assembly according to claim 1, wherein the power module is a direct current power and is provided through a device selected from a group consisting of a USB, a PS2 port, and an external power adapter.

4. The induction charge device assembly according to claim 1, wherein the control switch circuit has a transistor circuit.

5. The induction charge device assembly according to claim 1, wherein the control switch circuit has an over load protect circuit limiting current and providing current over load protection.

6. The induction charge device assembly according to claim 1, wherein in the induction charge device further comprises a base seat, the portable electronic device is inserted into the base seat and charged.

7. The induction charge device assembly according to claim 1, wherein the portable electronic device further includes:

a) the induction coil receiving a frequency of the electric magnetic field generated by the electric magnetic field generate and secondary coil react circuit and converting the frequency into a power signal;

b) a rectification circuit electrically connected to the induction coil and rectifying the power signal into a direct current power;

c) a rechargeable battery electrically connected to the rectification circuit and providing the direct current power to the portable electronic device; and

d) a device circuit electrically connected to the rechargeable battery and controlling the portable electronic device.

8. The induction charge device assembly according to claim 7, wherein the portable electronic device further includes a switch circuit electrically connected between the rechargeable battery and the device circuit, the switch circuit selectively turning the device circuit on and off.

9. The induction charge device assembly according to claim 8, wherein the switch circuit is selected from a group consisting of an automatic switch circuit and a manual switch circuit.

10. An induction charge device assembly comprising:

a) a portable electronic device having;

I)an induction coil receiving a frequency of the electric magnetic field generated by the electric magnetic field generate and secondary coil react circuit and converting the frequency into a power signal;

ii) a rectification circuit electrically connected to the induction coil and rectifying the power signal into a direct current power;

iii) a rechargeable battery electrically connected to the rectification circuit and providing the direct current power to the portable electronic device; and

iv) a device circuit electrically connected to the rechargeable battery and controlling the portable electronic device; and

b) an induction charge device having;

I) an electric magnetic field generate and secondary coil react circuit electrically and magnetically coupled to the induction coil of the portable electronic device and controlling an electromagnetic varying of an electric magnetic field according to a load varying based on a distance between the portable electronic device and the induction charge device;

ii) a detection and modulation generate circuit being a pulse frequency modulation generate circuit electrically connected to the electric magnetic field generate and secondary coil react circuit and detecting the electromagnetic varying and outputting pulse signals having frequencies corresponding to the electromagnetic varying; and

iii) a control switch circuit electrically connected to the electric magnetic field generate and secondary coil react circuit and selectively turning on and off a transistor switch based on the pulse signals,

wherein a charge from the induction charge device to the portable electronic device is adjusted according to the pulse signals based on a distance between the portable electronic device and the induction charge device.

11. The induction charge device assembly according to claim 10, wherein the portable electronic device is selected from a group consisting of a wireless home appliance and a wireless computer peripheral device.

12. The induction charge device assembly according to claim 10, wherein the induction charge device further comprises a power input port electrically connected to the control switch circuit and providing power thereto.

13. The induction charge device assembly according to claim 10, wherein the control switch circuit has an over load protect circuit limiting current and providing current over load protection.

14. The induction charge device assembly according to claim 10, wherein in the induction charge device further comprises a base seat, the portable electronic device is inserted into the base seat and charged.

15. The induction charge device assembly according to claim 10, wherein the portable electronic device further includes a switch circuit electrically connected between the rechargeable battery and the device circuit, the switch circuit selectively turning the device circuit on and off.

16. The induction charge device assembly according to claim 15, wherein the switch circuit is selected from a group consisting of an automatic switch circuit and a manual switch circuit.