ELECTRONIC CARD

• US 20140062391A1
• Filed: 06/13/2013
• Published: 03/06/2014
• Est. Priority Date: 08/31/2012
• Status: Active Grant

• Current Assignee: E Ink Holdings Incorporated
• Original Assignee: SiPix Technology Inc. (E Ink Holdings Incorporated)
• Inventors: Hsieh, Yao-Jen, Jou, Ming-Jong, Hung, Chi-Mao, Sun, Wei-Min
• Granted Patent: US 9,627,916 B2
• Time in Patent Office: Days
• US Class Current: 320/108
• CPC Class Codes: G06K 19/0702 the arrangement including a battery
• CPC Class Codes: G06K 19/0704 the battery being rechargeable, e.g. solar batteries
• CPC Class Codes: G06K 19/0707 the arrangement being capable of collecting energy from external energy sources, e.g. thermocouples, vibration, electromagnetic radiation G06K19/0702 takes precedence
• CPC Class Codes: G06K 19/0723 the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
• CPC Class Codes: H02J 50/10 using inductive coupling

Abstract

An electronic card including an antenna, a chip, a charging circuit and a battery is provided. The antenna receives an external electric signal, and the chip is coupled to the antenna, so as to receive the external electric signal and provide a demodulated electric signal. The charging circuit is coupled to the chip, receives the demodulated electric signal and converts the demodulated electric signal to generate a charging power. The battery is coupled to the charging circuit, wherein, the charging circuit provides the charging power to the battery according to a residual electricity of the battery, so as to charge the battery.

Claims

1. An electronic card, comprising:

an antenna, receiving an external electric signal;

a chip, coupled to the antenna, receiving the external electric signal via the antenna and providing a demodulated electric signal to a charging circuit;

the charging circuit, coupled to the chip, receiving the demodulated electric signal and converting the demodulated electric signal to generate a charging power; and

a battery, coupled to the charging circuit,

wherein, the charging circuit provides the charging power to the battery for charging the battery according to a residual electricity of the battery.

2. The electronic card as claimed in claim 1, further comprising:

a controller, coupled to the chip and the charging circuit, where the controller activates the charging circuit to charge the battery according to the residual electricity, through the charging circuit detects the residual electricity of the battery.

3. The electronic card as claimed in claim 2, further comprising:

a display module, coupled to the controller,

wherein the display module displays the residual electricity of the battery through the controller.

4. The electronic card as claimed in claim 1, wherein the display module is an electophoretic display module.

5. The electronic card as claimed in claim 1, wherein the antenna is an annular coil disposed surroundingly on the electronic card.

6. The electronic card as claimed in claim 1, wherein the charging circuit comprises:

a power converter, coupled to the chip and configured to receive and convert the demodulated electric signal to generate the charging power.

7. The electronic card as claimed in claim 1, wherein the charging circuit further comprises:

an electricity detector, coupled to the battery and configured to detect the residual charge in the battery.

8. The electronic card as claimed in claim 1, wherein the charging circuit provides the charging power to charge the battery when the residual electricity is less than a predetermined electricity.

9. The electronic card as claimed in claim 8, wherein the charging circuit cuts off a path providing the charging power to the battery when the residual electricity is not less than the predetermined electricity.