Data processing system and apparatus

• US 5,359,344 A
• Filed: 01/29/1993
• Issued: 10/25/1994
• Est. Priority Date: 09/29/1988
• Status: Expired due to Term

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Inoue, Hiroshi, Mizutome, Atsushi, Enomoto, Aiko
• Primary Examiner(s): BRIER, JEFFERY A
• Application Number:
  US08/011,241
• Time in Patent Office: 634 Days
• Field of Search: 340/784, 340/799, 340/798, 340/721, 345/98, 345/100
• US Class Current: 345/100
• CPC Class Codes: G09G 2310/0227 related to multiple interlacing, i.e. involving more fields than just one odd field and one even field
• CPC Class Codes: G09G 2310/04 Partial updating of the display screen
• CPC Class Codes: G09G 2310/06 Details of flat display driving waveforms
• CPC Class Codes: G09G 2310/061 for resetting or blanking
• CPC Class Codes: G09G 2310/065 Waveforms comprising zero voltage phase or pause
• CPC Class Codes: G09G 3/3629 using liquid crystals having memory effects, e.g. ferroelectric liquid crystals

Abstract

A data processing apparatus includes: receiver for receiving image data having a plurality of graphic events; a controller for controlling an image data storage memory so that the received image data is stored in the memory in the order of from a higher display priority level of the graphic events based on prescribed display priority levels of the graphic events and a controller for controlling the image data storage memory so that the stored image data is transferred in the order of from a higher priority level of the graphic events to a drive control.

Claims

1. A data processing apparatus, comprising:

(a) means for receiving image data having a plurality of graphic events;

(b) means for controlling an image data storage memory so that the received image data is stored in the memory in the order of from a higher display priority level of the graphic events based on prescribed display priority levels of the graphic events, with the storage of image data for higher priority graphic events occurring before the storage of image data for lower priority graphic events; and

(c) means for controlling the image data storage memory so that the stored image data is transferred in the order of from a higher priority level of the graphic events to drive control means, with the transfer of stored image data corresponding to higher priority graphic events occurring before the transfer of stored image data corresponding to lower priority graphic events.

2. An apparatus according to claim 1, wherein said stored image data comprises scanning line address data for selecting a scanning line and display data for controlling display data signals applied to data lines associated with the selected scanning line, and the apparatus comprises means for serially transferring the image data.

3. An apparatus according to claim 2, which comprises means for memorizing the transferred scanning line address data.

4. An apparatus according to claim 1, wherein said plurality of graphic events include a moving display as an event of the first display priority level.

5. A data processing system comprising:

(a) means for receiving image data having a plurality of graphic events;

(b) means for controlling an image data storage memory so that the received image data is stored in the memory in the order of from a higher display priority level of the graphic events based on prescribed display priority levels of the graphic events, with the storage of image data for higher priority graphic events occurring before the storage of image data for lower priority graphic events;

(c) means for controlling the image data storage memory so that the stored image data is transferred in the order of from a higher priority level of the graphic events to drive control means, with the transfer of stored image data corresponding to higher priority graphic events occurring before the transfer of stored image data corresponding to lower priority graphic events; and

(d) display means controlled by the drive control means.

6. A system according to claim 5, wherein said display means comprises an electrode matrix formed of scanning lines and data lines.

7. A system according to claim 5, wherein said display means has a memory characteristic.

8. A system according to claim 5, wherein said display means comprises a ferroelectric liquid crystal.

9. A system according to claim 5, wherein said stored image data comprises scanning line address data for selecting a scanning line and display data for controlling display data signals applied to data lines associated with the selected scanning line, and the apparatus comprises means for serially transferring the image data.

10. A system according to claim 9, which comprises means for memorizing the transferred scanning line address data.

11. A system according to claim 5, wherein said plurality of graphic events include a moving display as an event of the first display priority level.