Aspects of the invention provide an electronic paper display system that can include an electronic paper and the writing device. The writing device transmits power and baseband signals by using an electromagnetic coupling between a coil of the writing device and a coil of the electronic paper. The baseband signals, which are encoded by the writing device, are decoded by a decoder of the electronic paper and fed to the control circuit to illustrate images on a bi-stable display unit. The electronic paper has a power storage that temporarily stores power transmitted by using electromagnetic coupling for absorbing fluctuation of power in both transmission and consumption. The asynchronous design of this invention brings both robustness and low-power consumption.

Claims

15 · 2 independent · depth 5

15 granted claims

›1.independentA writing device that transmits an electromagnetic wave to a receiving device, the writing device comprising:na first antenna unit;an equivalent load …+11

›2.↳ 1The writing device according to claim 1, the equivalent load receiving unit further including:na power supply circuit generating a power based on the …d2+6

›9.↳ 1The writing device according to claim 1, the equivalent load receiving unit further including:na rectifying circuit configured to rectify the first si…d2

›10.↳ 1The writing device according to claim 1, the second antenna unit being wound in a loop a plurality of times.d2+2

›13.independentA writing device for transmitting an electromagnetic wave to a receiving device, the writing device comprising:nan equivalent load receiving unit conf…+2

Classifications

6 codes

IPC · International Patent Classification

Section G — Physics

G09G3/34

USPC · US Patent Classification

345/107178/18.3178/45345/204345/84

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4.2 y

1,552 days filing → grant

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Jennifer T Nguyen

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1 priority documents

›Priority documents — 1

Type	Document	Date
related publication	US 20070285347 A1	13 Dec 2007

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