Electrophoretic active matrix display device

• US 20060227097A1
• Filed: 02/18/2004
• Published: 10/12/2006
• Est. Priority Date: 02/27/2003
• Status: Abandoned Application

• Current Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Greidanus, Franciscus Johannes Antonius Maria, Johnson, Mark Thomas, Henzen, Alexander Victor, Zhou, Guofu, Dijkman, Willibrordus Jurrianus
• Application Number:
  US10/546,310
• Publication Number:
  US 20060227097A1
• Time in Patent Office: Days
• US Class Current: 345/107
• CPC Class Codes: G09G 2300/0842 forming a memory circuit, e.g. a dynamic memory with one capacitor
• CPC Class Codes: G09G 2300/0876 Supplementary capacities in pixels having special driving circuits and electrodes instead of being connected to common electrode or ground; Use of additional capacitively coupled compensation electrodes
• CPC Class Codes: G09G 2310/0224 Details of interlacing
• CPC Class Codes: G09G 2310/0251 Precharge or discharge of pixel before applying new pixel voltage
• CPC Class Codes: G09G 3/344 based on particles moving in a fluid or in a gas, e.g. electrophoretic devices electrophoretic devices per se G02F1/167

Abstract

The invention relates to an apparatus for displaying data on a display, the apparatus comprising an electrophoretic display device, a storage device, user input means and a central processing unit conceived to retrieve data from the storage device and send the retrieved data to the display device for display. Advantageously, the storage device is a disk drive for reading data from removable optical disks with a diameter between 25 millimeter and 50 millimeter. The apparatus can be used as an electronic book.

Claims

1. A method of caching a part of digital content data from a content source (202), comprising the step of:

acquiring the digital content data from the content source (202),

characterized in that

said part of the digital content data comprises interleaved segments (130;

131) of the acquired digital content data, and

said interleaved segments (130;

131) of the acquired digital content data are stored in a first memory (203), thereby allowing for fast access to said part of the digital content data.

2. A method according to claim 1, wherein the digital content data are digital audio and/or video data.

3. A method according to claim 1, characterized in that the method further comprises playing back the digital content data stored on the content source (202), and that the storing of said interleaved segments (130;

131) takes place at or after replay.

4. A method according to claim 1, characterized in that the storing of the interleaved segments (130;

131) depends on parameters, which at least take account for a probability of replay and/or an acquisition time.

5. A method according to claim 1, characterized in that the digital content data are video data in MPEG format and that the interleaved segments of the acquired digital content data are I-pictures.

6. A method according to claim 1, characterized in that each of the interleaved segments (130;

131) of the acquired digital content data is a continuously acquired part of the digital content data from the content source (202).

7. A method according to any of the claim 1, characterized in that the method further comprises storing a contiguous first part of the digital content data in a second memory (204), which contiguous part (121) of the digital content data is suitable for use as anti-shock buffer data.

8. A method according to any of the claim 7, characterized in that the first memory (203) and the second memory (204) are comprised in a single memory circuit (205).

9. A method according to claim 1, wherein the content source (202) is a storage medium.

10. A method according to claim 1, wherein the content source (202) is a remote source and wherein the acquisition of the digital content data comprises receiving the digital content data over a network.

11. A device for caching a part of digital content data from a content source, comprising means for acquiring the digital content data from the content source,

characterized in that

the device (200) further comprises first memory (203) arranged to store interleaved segments (130;

131) of the acquired digital data, thereby allowing for fast access to said part of digital content data.

12. A device according to claim 11, wherein the digital content data are digital audio and/or video data.

13. A device according to claim 11, characterized in that the device further comprises means for playing back (207) the digital content data stored on the first memory (203), and the first memory (203) is adapted to store said interleaved segments (130;

131) at or after replay.

14. A device according to claim 11, characterized in that the device further comprises decision means (201), which are arranged to, in dependence on parameters taking account for a probability of replay and/or an acquisition time, decide which part of the digital content data is to be stored.

15. A device according to any of the claim 11 to 14, characterized in that the digital content data are video data in MPEG format and that the interleaved segments of the acquired digital content data are I-pictures.

16. A device according to claim 11, characterized in that each of the interleaved segments (130;

131) of the acquired digital content data is a continuously acquired part of the digital content data from the content source (202).

17. A device according to claim 11, characterized in that the device (200) further comprises a second memory (204) suitable as an anti-shock buffer, which second memory (204) are adapted for storing of a contiguous part (121) of the digital content data, which contiguous part (121) of the digital content data is suitable for use as anti-shock buffer data.

18. A device according to claim 17, characterized in that the first memory (203) and the second memory (204) are comprised in a single memory circuit (205).

19. A device according to claim 11, wherein the content source (202) is a storage medium.

20. A device according to claim 11, wherein the content source (202) is a remote source, and wherein the means for acquiring the digital content data comprises means for receiving data over a network.