IMAGE TRANSMISSION METHOD, DEVICE, AND COMPUTER-READABLE STORAGE MEDIUM STORING IMAGE TRANSMISSION PROGRAM

• US 20120139952A1
• Filed: 11/02/2011
• Published: 06/07/2012
• Est. Priority Date: 12/01/2010
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Matsui, Kazuki, Horio, Kenichi, IMAI, Tomoharu
• Granted Patent: US 8,797,365 B2
• Time in Patent Office: Days
• US Class Current: 345/672
• CPC Class Codes: G06F 3/0485 Scrolling or panning
• CPC Class Codes: G06F 3/1454 involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay
• CPC Class Codes: G09G 2370/022 Centralised management of display operation, e.g. in a server instead of locally
• CPC Class Codes: G09G 5/34 for rolling or scrolling

Abstract

An image transmission method includes using a computer processor, acquiring operation information at a transmission device from another device that instructs to scroll an image; determining a scroll direction and a scroll speed based on the operation information; generating a moving image from a plurality of images that are sequentially displayed on a screen of the other device at a display time interval when an image displayed on the screen of the other device is scrolled to the scroll direction at the speed for a time; and transmitting the moving image to the other device.

Claims

1. An image transmission method comprising:

acquiring operation information at a transmission device from another device that instructs the transmission device to scroll an image;

determining a scroll direction and a scroll speed based on the operation information;

generating a moving image from a plurality of images that are sequentially displayed on a screen of the other device at a display time interval when an image displayed on the screen of the other device is scrolled to the scroll direction at the speed for a time; and

transmitting the moving image to the other device.

2. The method according to claim 1, further comprising:

calculating an update frequency of the plurality of images;

determining a format of an image to be transmitted as a moving image format when the update frequency is at least at a threshold frequency; and

determining a format of an image to be transmitted as a still image format when the update frequency is smaller than the threshold frequency and transmitting the plurality of images to the other device.

3. The method according to claim 1,

wherein the display time interval is determined based on the scroll direction, the speed, and a size of an image display area of the other device.

4. The method according to claim 3, further comprising:

increasing the display time interval when a difference of positions of two images that are sequentially displayed at the display time interval based on the scroll direction and the speed is at least a value obtained by dividing the size of the image display area by a specified value.

5. The method according to claim 3, further comprising:

decreasing the display time interval when a difference of positions of two images that are sequentially displayed at the display time interval based on the scroll direction and the speed is at most a value obtained by dividing the size of the image display area by a specified value.

6. The method according to claim 1, further comprising:

determining a quality of an image to be displayed on the screen of the other device based on the scroll direction, the speed, and the size of the image display area of the other device.

7. The method according to claim 6, further comprising:

degrading image quality when a difference of positions of two images that are sequentially displayed at the display time interval based on the scroll direction and the speed is at least a value obtained by dividing the size of the image display area by a specified value.

8. The method according to claim 6, further comprising:

enhancing image quality when a difference of positions of two images that are sequentially displayed at the display time interval based on the scroll direction and the speed is at most a value obtained by dividing the size of the image display area by a specified value.

9. The method according to claim 1, further comprising:

converting an acceleration direction into the scroll direction and converting a magnitude of the acceleration into the speed;

wherein the operation information includes information that indicates acceleration of the other device.

10. The method according to claim 9,

wherein the converting the acceleration into the scroll direction and the speed refers to a storage device that stores a conversion rule to convert the acceleration into the scroll direction and the speed in association with identification information of a user of the other device when the operation information is received.

11. An image transmission device comprising:

a determination unit configured to determine a scroll direction and a scroll speed based on operation information when the determination unit acquires the operation information from another device that instructs a scroll of an image;

a generation unit configured to generate a moving image from a plurality of images that are sequentially displayed on a screen of the other device at a display time interval when an image displayed on the screen of the other device is scrolled to the scroll direction at the speed for a time; and

a transmission unit configured to transmit the moving image to the other device.

12. The device according to claim 11, further comprising:

a calculation unit configured to calculate an update frequency of the plurality of images;

wherein the determination unit is configured to determine a format of an image to be transmitted as a moving image format when the update frequency is at least at a threshold frequency, and to determine a format of an image to be transmitted as a still image format when the update frequency is smaller than the threshold;

wherein the transmission unit transmits the plurality of images to the other device when the determination unit determines a format of an image to be transmitted is a still image format.

13. The device according to claim 11,

wherein the generation unit determines the display time interval based on the scroll direction, the speed, and a size of an image display area of the other device.

14. The device according to claim 13,

wherein the generation unit increases the display time interval when a difference of positions of two images that are sequentially displayed at the display time interval based on the scroll direction and the speed is at least a value obtained by dividing the size of the image display area by a specified value.

15. The device according to claim 13,

wherein the generation unit decreases the display time interval when a difference of positions of two images that are sequentially displayed at the display time interval based on the scroll direction and the speed is at most a value obtained by dividing the size of the image display area by a specified value.

16. The device according to claim 11,

wherein the generation unit determines a quality of an image to be displayed on the screen of the other device based on the scroll direction, the speed, and the size of the image display area of the other device.

17. The device according to claim 16,

wherein the generation unit degrades image quality when a difference of positions of two images that are sequentially displayed at the display time interval based on the scroll direction and the scroll speed is at least a value obtained by dividing the size of the image display area by a specified value.

18. The device according to claim 16,

wherein the generation unit enhances image quality when a difference of positions of two images that are sequentially displayed at the display time interval based on the scroll direction and the speed is at most a value obtained by dividing the size of the image display area by a specified value.

19. The device according to claim 11,

wherein the operation information includes information that indicates acceleration of the other device;

wherein the determination unit converts an acceleration direction into the scroll direction and converts a magnitude of the acceleration into the speed.

20. A non-transitory computer-readable medium storing an image transmission program causing a computer to execute a process comprising:

acquiring operation information from another device that instructs to scroll an image;

determining a scroll direction and a scroll speed based on the operation information;

generating a moving image from a plurality of images that are sequentially displayed on a screen of the other device at a display time interval when an image displayed on the screen of the other device is scrolled to the scroll direction at the speed for a time; and

transmitting the moving image to the other device.