Image display apparatus, method and program

• US 20050068342A1
• Filed: 09/13/2004
• Published: 03/31/2005
• Est. Priority Date: 09/26/2003
• Status: Active Grant

• Current Assignee: Canon Ayutthaya Limited (Canon Inc.)
• Original Assignee: Canon Ayutthaya Limited (Canon Inc.)
• Inventors: Kadota, Shigehiro, Ouchi, Akihiro, Matsushita, Akihiro
• Granted Patent: US 7,423,660 B2
• Time in Patent Office: Days
• US Class Current: 345/684
• CPC Class Codes: G06F 2203/04806 Zoom, i.e. interaction techniques or interactors for controlling the zooming operation
• CPC Class Codes: G06F 3/04855 Interaction with scrollbars

Abstract

An image display apparatus connected in a communication-enable manner to an information processing unit for processing image data and outputting an image signal, wherein the image display apparatus receives the image signal and displays an image. The image display apparatus comprises an on-screen display generating unit for generating the image, a coordinate input unit for providing position information based on pointing on a display screen, and a control unit for controlling the on-screen display generating unit to generate and display a scroll bar, and controlling the image signal output from the information processing unit in accordance with an input for an area of the scroll bar from the coordinate input unit.

Claims

1. An image display apparatus connected in a communication-enable manner to an information processing unit for processing image data and outputting an image signal, the image display apparatus receiving the image signal and displaying an image, the image display apparatus comprising:

an on-screen display generating unit configured to generate the image;

a coordinate input unit configured to provide position information based on pointing on a display screen; and

a control unit configured to control the on-screen display generating unit to generate and display a scroll bar, and to control the image signal output from the information processing unit in accordance with an input for an area of the scroll bar provided by the coordinate input unit.

2. The image display apparatus according to claim 1, further comprising a scale-up display processing unit configured to display a scaled-up image,

wherein the on-screen display generating unit is configured to display the scroll bar in superimposed relation to the scaled-up image displayed by the scale-up display processing unit, and

the control unit is configured to control the scroll bar and a scale-up display image signal in accordance with an input provided by the coordinate input unit.

3. The image display apparatus according to claim 1, further comprising a position information transmitting unit configured to transmit position information from the coordinate input unit to the information processing unit,

wherein the position information transmitting unit is configured to transmit the position information to the information processing unit when the position information provided by the coordinate input unit points to a position outside a predetermined area displayed by the on-screen display generating unit.

4. The image display apparatus according to claim 1, wherein the on-screen display generating unit is further configured to display a slicer in the scroll bar such that a size of the slicer relative to a size of the scroll bar represents a scale-up rate and a position of the slicer relative to the scroll bar represents a position of the scaled-up image relative to an original image.

5. An image display system comprising an information processing unit for processing image data and outputting an image signal, and an image display apparatus for receiving the image signal and displaying an image on a display screen, the image display system comprising:

on-screen display generating means for generating and displaying the image on the display screen;

coordinate input means for providing position information based pointing on the display screen; and

control means for controlling the on-screen display generating means to generate and display a scroll bar, and controlling the image signal output from the information processing unit in accordance with the position information provided by the coordinate input means.

6. The image display system according to claim 5, further comprising scale-up display processing means for displaying a scaled-up image,

wherein the on-screen display generating means displays the scroll bar in superimposed relation to the scaled-up image displayed by the scale-up display processing means, and

the control means controls the scroll bar and a scale-up display image signal in accordance with the position information provided by the coordinate input means.

7. The image display system according to claim 5, further comprising position information transmitting means for transmitting position information from the coordinate input means to the information processing unit,

wherein the position information transmitting means transmits the position information to the information processing unit when the position information provided by the coordinate input means points to a position outside a predetermined area displayed by the on-screen display generating means.

8. The image display system according to claim 5, wherein the on-screen display generating means further generates and displays a slicer in the scroll bar such that a size of the slicer relative to a size of the scroll bar represents a scale-up rate and a position of the slicer relative to the scroll bar represents a position of the scaled-up image relative to an original image.

9. An image display method that establishes connection in a communication-enable manner to an information processing unit for processing image data and outputting an image signal, receiving the image signal, and displaying an image, the image display method comprising:

generating the image;

displaying the image on a display screen;

generating a scroll bar;

displaying the scroll bar on the display screen;

obtaining position information based on pointing on the display screen; and

controlling the image signal output from the information processing unit in accordance with the position information obtained for an area of the scroll bar.

10. The image display method according to claim 9, further comprising displaying a scaled-up image,

wherein, the scroll bar is displayed in superimposed relation to the scaled-up image, and the scroll bar and a scale-up display image signal are controlled in accordance with the position information.

11. The image display method according to claim 9, further comprising transmitting position information to the information processing unit,

wherein the position information is transmitted to the information processing unit when the position information points to a position outside a predetermined display area.

12. The image display method according to claim 9, further comprising displaying a slicer in the scroll bar such that a size of the slicer relative to a size of the scroll bar represents a scale-up rate and a position of the slicer relative to the scroll bar represents a position of the scaled-up image relative to an original image.

13. A control program for causing a computer to implement an image display method according to claim 9.