Screen transmission device, method of generating screen and computer readable medium

Abstract

According to an aspect of the present invention, there is provided with a screen transmission device including: an information receiver configured to receive operating condition information indicating an operating condition of a screen display device; a coloring determiner configured to determine coloring of screen data to be displayed on the screen display device based on the operating condition information; a screen data generator configured to generate screen data to be displayed on the screen display device according to the coloring; and a screen data transmitter configured to transmit the screen data to the screen display device.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates an example of a screen transfer system according to a first embodiment;

FIG. 2 illustrates an example of the block configuration of a screen display device according to the first embodiment;

FIG. 3 illustrates an example of the block configuration of a screen transmission device according to the first embodiment;

FIG. 4 illustrates an example of a frame format of display luminance information according to the first embodiment;

FIG. 5 illustrates an example of a frame format of user operation event information according to the first embodiment;

FIG. 6 is a flow chart showing processing when luminance information is received from the screen display device according to the first embodiment;

FIG. 7 illustrates an example of the block configuration of a screen display device according to a second embodiment;

FIG. 8 illustrates an example of a frame format of operating condition information according to the second embodiment;

FIG. 9 illustrates an example of the block configuration of a screen display device according to a third embodiment;

FIG. 10 illustrates an example of the block configuration of a screen transmission device according to the third embodiment;

FIG. 11 illustrates an example of a frame format of battery remaining amount information according to the third embodiment;

FIG. 12 illustrates an example of a frame format of luminance setting information according to the third embodiment;

FIG. 13 is a flow chart illustrating a flow of processing carried out by the screen transmission device when the battery remaining amount information is received from the screen display device of the third embodiment;

FIG. 14 illustrates an example of a frame format of operation setting information according to a fourth embodiment;

FIG. 15 illustrates an example of the block configuration of a screen display device according to a fifth embodiment;

FIG. 16 illustrates an example of the block configuration of a screen display device according to a sixth embodiment;

FIG. 17 illustrates an example of a frame format of screen data with no index according to the sixth embodiment;

FIG. 18 illustrates an example of a frame format of screen data with an index according to the sixth embodiment;

FIG. 19 illustrates an example of a frame format of screen data with only an index according to the sixth embodiment;

FIG. 20 illustrates an example of the block configuration of a screen transmission device according to the sixth embodiment;

FIG. 21 illustrates an example of the block configuration of a screen transmission device according to a seventh embodiment;

FIG. 22 illustrates an example of a table of correspondence between screen attributes and transmission rates according to the seventh embodiment;

FIG. 23 schematically illustrates the configuration of a backlight type liquid crystal display device;

FIG. 24 schematically illustrates the configuration of a split backlight type liquid crystal display device; and

FIG. 25 schematically illustrates the configuration of a display device using self light emitting element as a display element.

Claims

1. A screen transmission device comprising: an information receiver configured to receive operating condition information indicating an operating condition of a screen display device;a coloring determiner configured to determine coloring of screen data to be displayed on the screen display device based on the operating condition information;a screen data generator configured to generate screen data to be displayed on the screen display device according to the coloring; anda screen data transmitter configured to transmit the screen data to the screen display device.

2. The device according to claim 1, wherein the screen display device is a backlight type LCD (Liquid Crystal Display) device and the information receiver receives luminance information indicating luminance of a backlight of the LCD device as the operating condition information.

3. The device according to claim 2, wherein the coloring determiner widens a range from a minimum value to a maximum value of tone of pixels in the screen data as the luminance indicated in the luminance information decreases.

4. The device according to claim 1, wherein the information receiver receives battery information indicating a remaining amount of a battery of the screen display device as the operating condition information.

5. The device according to claim 4, wherein the coloring determiner adopts a single color as coloring of an object image in the screen data, and the screen data transmitter compresses the screen data and transmits compressed screen data.

6. The device according to claim 4, further comprising: a luminance determiner configured to determine luminance of a backlight of a backlight type LCD device as the screen display device, based on the remaining amount of the battery; anda luminance information transmitter configured to transmit luminance information indicating the luminance of the backlight to the screen display device.

7. The device according to claim 6, wherein the luminance determiner determines luminance of each backlight of the backlight type LCD device having a plurality of backlights.

8. The device according to claim 1, wherein the coloring determiner determines coloring of image of respective windows in the screen data independently.

9. The device according to claim 8, wherein the coloring determiner changes coloring of an image of only a window which is active and keep coloring of image of windows being not active constant.

10. A screen generating method, comprising: receiving operating condition information indicating an operating condition of a screen display device;determining coloring of screen data to be displayed on the screen display device based on the operating condition information;generating screen data to be displayed on the screen display device according to the coloring; andtransmitting the screen data to the screen display device.

11. The method according to claim 10, wherein the screen display device is a backlight type LCD (Liquid Crystal Display) device and the receiving includes receiving luminance information indicating luminance of a backlight of the LCD device as the operating condition information.

12. The method according to claim 11, wherein the determining the coloring includes widening a range from a minimum value to a maximum value of tone of pixels in the screen data as the luminance indicated in the luminance information decreases.

13. The method according to claim 10, wherein the receiving includes receiving battery information indicating a remaining amount of a battery of the screen display device as the operating condition information.

14. The method according to claim 13, wherein the determining the coloring includes adopting a single color as coloring of an object image in the screen data, and the screen transmitter determines to compress the screen and transmit compressed screen data.

15. The method according to claim 13, further comprising: determining luminance of a backlight of a backlight type LCD device as the screen display device based on the remaining amount of the battery; andtransmitting luminance information indicating the luminance of the backlight to the screen display device.

16. The method according to claim 15, wherein the determining includes determining luminance of each backlight of the backlight type LCD device having a plurality of backlights.

17. The method according to claim 10, wherein the determining the coloring includes coloring of image of respective windows in the screen data independently.

18. The method according to claim 17, wherein the determining includes changing coloring of an image of only a window which is active and keep coloring of image of windows being not active constant.

19. A computer readable medium storing a computer program for causing a computer to execute instructions, to perform steps of: receiving operating condition information indicating an operating condition of a screen display device;determining coloring of screen data to be displayed on the screen display device based on the operating condition information;generating screen data to be displayed on the screen display device according to the coloring; andtransmitting the screen data to the screen display device.