Home appliance

Patent metadata

Field	Value
Publication number	US-2016359372-A1
Application number	US-201615171284-A
Country	US
Kind code	A1
Filing date	Jun 2, 2016
Priority date	Jun 3, 2015
Publication date	Dec 8, 2016
Grant date	—

Abstract

A home appliance is disclosed, including a motor, a drive unit configured to drive the motor, a first circuit unit including a main controller configured to control the drive unit, a display unit, and a second circuit unit including a display controller configured to control the display unit. The first circuit unit transmits wireless power to the second circuit unit, using a first frequency, and the second circuit unit transmits data to the first circuit unit, using a second frequency different from the first frequency. Thereby, wireless power transmission and bidirectional communication are performed between the first and second circuit units.

First claim

What is claimed is:

1 . A home appliance comprising:
a motor; a drive circuit configured to drive the motor; a first circuit including a main controller configured to control the drive circuit; a display module; and a second circuit including a display controller configured to control the display module, the second circuit being wirelessly coupled to the first circuit, wherein the first circuit wirelessly transmits power to the second circuit using a first frequency, and the second circuit wirelessly transmits data to the first circuit using a second frequency different from the first frequency.

2 . The home appliance according to claim 1 ,
wherein the first circuit includes a first coil that wirelessly transmits power to the second circuit and wirelessly receives data from the second circuit, and wherein the second circuit includes a second coil that wirelessly receives power from the first circuit and wirelessly transmits data to the first circuit.

3 . The home appliance according to claim 1 , wherein the first circuit and the second circuit perform bidirectional communication at the same time.

4 . The home appliance according to claim 1 ,
wherein the first circuit includes: the first coil that wirelessly transmits power to the second circuit and wirelessly receives data from the second circuit; a wireless power drive circuit configured to drive the first coil; and a wireless power controller configured to control the wireless power drive circuit, wherein the second circuit includes: the second coil that wirelessly receives power from the first circuit and wirelessly transmits data to the first circuit; and a rectifier circuit configured to rectify wireless power received through the second coil, wherein the display controller is operated based on power supplied from the rectifier circuit.

5 . The home appliance according to claim 4 , wherein the first circuit further includes a filter configured to filter data received through the first coil and the wireless power drive circuit upon receiving data from the second circuit.

6 . The home appliance according to claim 5 , wherein the filter is a band pass filter.

7 . The home appliance according to claim 4 ,
wherein the wireless power drive circuit in the first circuit converts a direct current (DC) power voltage into an alternating current (AC) power voltage, and wherein the first coil wirelessly transmits power using the converted AC power voltage.

8 . The home appliance according to claim 4 ,
wherein the first circuit further includes a communication unit configured to exchange data with the second circuit, and wherein the wireless power controller controls the communication unit to control transmission of a data signal to the first coil.

9 . The home appliance according to claim 4 , wherein the second circuit further includes:
a modulation/demodulation circuit configured to modulate or demodulate a data signal received from the rectifier circuit; and a communication unit configured to extract data from a signal demodulated by the modulation/demodulation circuit.

10 . The home appliance according to claim 9 , wherein the modulation/demodulation circuit performs resistor-capacitor (RC) modulation or RC demodulation based on a resistor and a capacitor having a prescribed configuration in the modulation/demodulation circuit.

11 . The home appliance according to claim 9 , wherein the display controller controls transmission of a data signal from the communication unit of the second circuit to the second coil during data transmission to the first circuit.

12 . The home appliance according to claim 1 , further comprising a door configured to be opened or closed, wherein the second circuit is attached to the door.

13 . The home appliance according to claim 12 , further comprising an input module, wherein at least one of the input module and the display module is attached to the door.

14 . The home appliance according to claim 1 , wherein the home appliance is any one of a laundry treatment machine, a refrigerator, an air conditioner, or a cooking device.

15 . A home appliance comprising:
a motor; a drive circuit configured to drive the motor; a first circuit including a main controller configured to control the drive circuit; a display module; a door configured to be opened or closed; and a second circuit including a display controller configured to control the display module, the second circuit being attached to the door and wirelessly coupled to the first circuit to wirelessly receive power from the first circuit.

16 . The home appliance according to claim 15 , further comprising an input module, wherein at least one of the input module and the display module is attached to the door.

17 . The home appliance according to claim 15 ,
wherein the first circuit includes a first coil that wirelessly transmits power to the second circuit and wirelessly receives data from the second circuit, and wherein the second circuit includes a second coil that wirelessly receives power from the first circuit and wirelessly transmits data to the first circuit.

18 . The home appliance according to claim 15 , wherein the first circuit wirelessly transmits power to the second circuit using a first frequency, and the second circuit wirelessly transmits data to the first circuit using a second frequency different from the first frequency.

19 . The home appliance according to claim 15 , wherein the first circuit and the second circuit perform bidirectional communication.

20 . The home appliance according to claim 15 , wherein the home appliance is any one of a laundry treatment machine, a refrigerator, an air conditioner, or a cooking device.

Assignees

• Lg Electronics Inc

Inventors

• Lee Soongkeun
• Jang Hoyong
• Lee Chungill

Classifications

• H04W4/80

  Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication · CPC title

• H02J50/15

  using ultrasonic waves · CPC title

• G09G5/003

  Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto (specific for a CRT G09G1/165; for a flat panel G09G3/2092) · CPC title

• H02J50/80 Primary

  involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices · CPC title

• H02P27/08

  with pulse width modulation · CPC title