Apparatus, method and medium for controlling image orientation

• US 20070171240A1
• Filed: 03/26/2007
• Published: 07/26/2007
• Est. Priority Date: 08/16/2004
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Koh, Ho
• Granted Patent: US 7,782,342 B2
• Time in Patent Office: Days
• US Class Current: 345/649
• CPC Class Codes: G06F 2200/1614 Image rotation following screen orientation, e.g. switching from landscape to portrait mode
• CPC Class Codes: G09G 2340/0492 Change of orientation of the displayed image, e.g. upside-down, mirrored
• CPC Class Codes: G09G 5/363 Graphics controllers

Abstract

An apparatus, method, and medium for controlling image orientation are disclosed. An orientation mode detector measures multi-directional rotational angles of a display panel and determines an orientation mode for original image data based on the measured rotational angles. A system memory stores orientation parameters corresponding to a plurality of image orientation modes. A system controller initially acquires information indicating the orientation mode from the orientation mode detector, and it extracts orientation parameters corresponding to the acquired information from the system memory. Finally, a driver changes an orientation of the original image data according to the extracted orientation parameters.

Claims

1. An apparatus for controlling an orientation of image data, the apparatus comprising:

a display panel being rotatable about at least one axis, the rotation of said display panel setting an orientation of the display panel, the display panel orientation being selectable according to each of a plurality of rotational angles, each rotational angle corresponding to an orientation mode for determining a display angle of original image data; and

an orientation mode detector, installed in said display panel, configured to detect the set orientation of the display panel and to determine the orientation mode based on the detected orientation.

2. The apparatus of claim 1, further comprising:

a first sensor, installed in said display panel, configured to detect a first rotational angle of said display panel about a first axis perpendicular to said display panel; and

a second sensor, installed in said display panel, configured to detect a second rotational angle of said display panel about a second axis perpendicular to the first axis.

3. The apparatus of claim 2, wherein said first and second sensors each comprise:

a conductive ball, captured within a space of said display panel, for moving freely in correspondence to a gravitational force applied to said display panel; and

a plurality of contact points arranged adjacent to each other within the captured space of said display panel so that said conductive ball remains in electrical contact with at least one contact point, wherein the selected orientation mode is determined when said conductive ball is in electrical contact with exactly two of said plurality of contact points.

4. The apparatus of claim 3, wherein the number of contact points corresponds to the number of orientation modes.

5. The apparatus of claim 1, further comprising:

a system memory configured to store orientation parameters corresponding to a plurality of image orientation modes;

a system controller configured to acquire information indicating the determined orientation mode from said orientation mode detector and to extract orientation parameters corresponding to the acquired information; and

a driver configured to change an orientation of the original image data according to the extracted orientation parameters, wherein the orientation-changed image data is stored in said system memory and is displayed on a display screen.

6. The apparatus of claim 5, wherein said orientation mode detector comprises:

a display memory, configured to store information indicating the determined orientation mode; and

a display controller for sending an acknowledgement to said system controller when a request for access to said display memory is received.

7. An apparatus for controlling an orientation of image data, the apparatus comprising:

a display panel being rotatable about two axes, the rotation of said display panel setting a disposition of the display panel, the display panel disposition being selectable according to each of a plurality of discrete rotational angles, each rotational angle corresponding to an orientation mode for determining a display angle of original image data;

a first sensor, installed in said display panel, configured to detect a first rotational angle of said display panel about a first axis perpendicular to the display panel, said first sensor responsive to a controlled movement of said display panel on a ball hinge centrally disposed on a rear surface of said display panel; and

a second sensor, installed in said display panel, configured to detect a second rotational angle of said display panel about a second axis perpendicular to the first axis, said second sensor responsive to a controlled movement of said display panel on a pivoting hinge coupled to the ball hinge.

8. The apparatus of claim 7, wherein the ball hinge enables 360 degrees of movement by said display panel on the first axis.

9. The apparatus of claim 8, wherein the 360 degrees of movement by said display panel includes a display panel disposition corresponding to each of a 0 degrees orientation mode, a 90 degrees orientation mode, a 180 degrees orientation mode, and a 270 degrees orientation mode.

10. The apparatus of claim 7, wherein the pivoting hinge enables 180 degrees of movement by said display panel on the second axis.

11. The apparatus of claim 10, wherein the 180 degrees of movement by said display panel includes a display panel disposition corresponding to each of a 0 degrees orientation mode and a 180 degrees orientation mode.

12. A computer-readable medium storing program code for determining an orientation mode for original image data in a display system, which includes at least a display panel, a processor, memory, and a controller of image orientation and which, in response to a manual rotation of the display panel about at least one of at least two axes, causes the processor to execute the program code to perform:

(a) determining whether the display panel is rotated about a first axis of the at least two axes;

(b) when the determination in step (a) is true, determining whether a first rotational angle of the display panel about the first axis is 90 degrees;

(c) when the determination in step (b) is true, determining whether the display panel is rotated about a second axis of the at least two axes;

(d) when the determination in step (c) is true, determining whether a second rotational angle of the display panel about the second axis is 180 degrees;

(e) when the determination in step (d) is true, storing an orientation mode of 270 degrees in a memory;

(f) determining whether a request for access to the memory has been received from an image orientation controller; and

(g) when the request is made, transmitting an acknowledgement to the image orientation controller for authorizing access to the memory.