ELECTRONIC DEVICE FOR REDUCING POWER CONSUMPTION

• US 20130260680A1
• Filed: 03/07/2013
• Published: 10/03/2013
• Est. Priority Date: 04/02/2012
• Status: Active Grant

• Current Assignee: Nuvoton Technology Corporation (Winbond Electronics Corporation)
• Original Assignee: Nuvoton Technology Corporation (Winbond Electronics Corporation)
• Inventors: TSAI, Doung-Her
• Granted Patent: US 8,971,963 B2
• Time in Patent Office: Days
• US Class Current: 455/41.1
• CPC Class Codes: H04B 7/26 at least one of which is mobile
• CPC Class Codes: H04W 52/0229 where the received signal is a wanted signal
• CPC Class Codes: H04W 52/0283 with sequential power up or power down of successive circuit blocks, e.g. switching on the local oscillator before RF or mixer stages
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

An electronic device includes a transparent substrate, an antenna, a first chip, and a second chip. The antenna is disposed above the transparent substrate. The first chip includes a sensor. The sensor is configured to detect whether the antenna has received a wireless signal or not. The second chip is coupled to the first chip, and operates in a power-saving mode. When the antenna receives the wireless signal, the first chip wakes up the second chip such that the second chip switches from the power-saving mode to a work mode, and the first chip transmits the wireless signal to the second chip.

Claims

1. An electronic device, including:

a panel, including a transparent substrate;

an antenna, disposed above the transparent substrate;

a first chip, including a sensor, wherein the sensor is configured to detect whether the antenna has received a wireless signal or not; and

a second chip, coupled to the first chip, and operating in a power-saving mode,

wherein when the antenna receives the wireless signal, the first chip wakes up the second chip such that the second chip switches from the power-saving mode to a work mode, and the first chip transmits the wireless signal to the second chip.

2. The electronic device as claimed in claim 1, wherein the first chip is disposed above the transparent substrate.

3. The electronic device as claimed in claim 1, wherein the panel further includes a touch panel or a display panel.

4. The electronic device as claimed in claim 3, wherein the display panel is an LCD (Liquid Crystal Display) panel, an OLED (Organic Light-Emitting Diode) panel, or an MEMS (Micro Electro Mechanical System) panel.

5. The electronic device as claimed in claim 1, wherein the first chip is a panel driving IC (Integrated circuit).

6. The electronic device as claimed in claim 1, wherein the second chip is a baseband processor.

7. The electronic device as claimed in claim 1, wherein when the antenna receives the wireless signal, the sensor wakes up the first chip such that the first chip switches from a power-saving mode to a work mode.

8. The electronic device as claimed in claim 1, further including:

a third chip, wherein when the antenna receives the wireless signal, the first chip transmits the wireless signal to the third chip, and the third chip processes the wireless signal and then transmits the processed wireless signal to the second chip.

9. The electronic device as claimed in claim 8, wherein the third chip is an NFC (Near Field Communication) controller.

10. The electronic device as claimed in claim 1, wherein the first chip further includes:

an NFC (Near Field Communication) control circuit, wherein when the antenna receives the wireless signal, the NFC control circuit processes the wireless signal, and the first chip transmits the processed wireless signal to the second chip.

11. The electronic device as claimed in claim 1, wherein if the sensor detects a variance in current, voltage or impedance of the antenna, the sensor determines that the antenna has received the wireless signal.

12. An electronic device for communicating with a reception device, including:

a panel, including a transparent substrate;

a first antenna, disposed above the transparent substrate; and

a first chip, generating a signal, and transmitting the signal to the first antenna,

wherein the first antenna transmits the signal to the reception device.

13. The electronic device as claimed in claim 12, wherein the first chip is disposed above the transparent substrate.

14. The electronic device as claimed in claim 12, wherein the first antenna is a chip antenna.

15. The electronic device as claimed in claim 12, wherein the panel further includes a touch panel or a display panel.

16. The electronic device as claimed in claim 15, wherein the display panel is an LCD (Liquid Crystal Display) panel, an OLED (Organic Light-Emitting Diode) panel, or an MEMS (Micro Electro Mechanical System) panel.

17. The electronic device as claimed in claim 12, wherein the first chip is a panel driving IC (Integrated circuit).

18. The electronic device as claimed in claim 12, further including:

a second chip, coupled to the first chip, and operating in a power-saving mode; and

a second antenna, disposed above the transparent substrate,

wherein the first chip includes a sensor, and the sensor is configured to detect whether the second antenna has received a wireless signal or not.

19. The electronic device as claimed in claim 18, wherein the second chip is a baseband processor.

20. The electronic device as claimed in claim 18, wherein when the second antenna receives the wireless signal, the first chip wakes up the second chip such that the second chip switches from the power-saving mode to a work mode, and the first chip transmits the wireless signal to the second chip.