Input apparatus for multi-layer on screen display and method of generating input signal for the same

• US 8,842,069 B2
• Filed: 11/24/2004
• Issued: 09/23/2014
• Est. Priority Date: 11/26/2003
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Choi, Eun-seok, Kim, Dong-yoon, Oh, Jong-koo, Bang, Won-chul, Chang, Wook, Cho, Sung-jung, Kang, Kyoung-ho
• Primary Examiner(s): Moon, Seokyun
• Application Number:
  US10/995,940
• Publication Number:
  US 20050162382A1
• Time in Patent Office: 3,590 Days
• Field of Search: 345156-184
• US Class Current: 345/156
• CPC Class Codes: G06F 3/0346 with detection of the device orientation or free movement in a 3D space, e.g. 3D mice, 6-DOF [six degrees of freedom] pointers using gyroscopes, accelerometers or tilt-sensors
• CPC Class Codes: G06F 3/0481 based on specific properties of the displayed interaction object or a metaphor-based environment, e.g. interaction with desktop elements like windows or icons, or assisted by a cursor's changing behaviour or appearance

Abstract

An input apparatus for a multi-layer on-screen display and a method of generating an input signal for a multi-layer on-screen display. The input apparatus includes: an acceleration sensing unit for sensing an acceleration of a motion of the input apparatus; a processing unit for obtaining information including a motion depth and a motion pattern of the input apparatus using the sensed acceleration and determining a layer to be activated from the information; and a transmitter for generating a signal including the determined layer and outputting the signal to the multi-layer OSD.

Claims

1. A system for a multi-layer on-screen display (OSD), the system comprising:

a remote control device comprising;

an acceleration sensing unit which senses an acceleration of a motion of the remote control device using a 3-axis acceleration sensor;

a processing unit which determines a motion depth and a motion pattern of the remote control device based on the acceleration sensed by the acceleration sensing unit, and determines a layer to be activated from the motion depth and the motion pattern; and

a transmitter which generates a signal indicating the layer determined by the processing unit and outputs the signal to the multi-layer OSD,

and a display unit which receives the signal from the transmitter and performs a corresponding multi-layer OSD function,

wherein the motion depth is a distance the remote control device is moved along in each direction of 3 axes and the motion pattern is the direction the remote control device is moved along the axis,

wherein the motion pattern includes at least one of a backward operation and a forward operation towards the display unit,

wherein the multi-layer OSD is displayed on a digital television for performing menu selection and does not incorporate a hierarchical menu structure, and

wherein the processing unit comprises;

an analog-to-digital converter (ADC) which converts the acceleration sensed by the acceleration sensing unit into a digital acceleration value;

a frame transformer which transforms the digital acceleration value in a body frame of the remote control device into a first acceleration value in a navigation frame;

an operation signal extractor which determines whether the motion is intended by a user from the first acceleration value in the navigation frame and outputs a second acceleration value based on whether the motion is intended by the user;

a motion information extractor which determines the motion depth from the second acceleration value output from the operation signal extractor and recognizes the motion pattern; and

a layer determinator for determining the layer to be activated according to the motion depth and the motion pattern

2. The system of claim 1, wherein the frame transformer determines parameters indicating an orientation of the remote control device in the navigation frame from the digital acceleration value in the body frame and determines the first acceleration value in the navigation frame from the parameters.

3. The system of claim 2, wherein the frame transformer determines only an acceleration component related to the motion pattern of the remote control device from the first acceleration value in the navigation frame.

4. The system of claim 1, wherein the ADC removes a high frequency component of the acceleration sensed by the acceleration sensing unit.

5. The system of claim 1, wherein the operation signal extractor determines whether the motion is intended according to a following equation by comparing the first acceleration value A_ny output from the frame transformer to a threshold value C_th1 and adjusts the first acceleration value A_ny to the second acceleration value Â

_ny ;

6. The system of claim 1, wherein the motion information extractor comprises:

a depth information generator which determines the motion depth by double integrating an absolute value of the second acceleration value output from the operation signal extractor; and

a motion pattern recognizer which determines whether a forward operation or backward operation of the remote control device occurs according to a sign of the second acceleration value output from the operation signal extractor.

7. The system of claim 1, wherein the layer determinator increases or decreases the layer to be activated by one if the motion depth is larger than a predetermined threshold value and the motion is determined to be a forward or backward operation of the remote control device.

8. The system of claim 7, wherein the layer determinator determines that there is no motion if the motion depth is not larger than the predetermined threshold value.

9. The system of claim 1, wherein the layer determinator determines that there is no motion if the motion depth is not larger than a predetermined threshold value.

10. A method for a multi-layer on-screen display (OSD) using a remote control device and a display unit, the method comprising:

(a) sensing an acceleration of a motion of the remote control device using a 3-axis acceleration sensor, at the remote control device;

(b) determining a motion depth and a motion pattern of the remote control device based on the acceleration, at the remote control device;

(c) determining a layer to be activated from the motion depth and the motion pattern, at the remote control device;

(d) outputting the layer which is determined to the multi-layer OSD, at the remote control device; and

(e) receiving the layer to perform the multi-layer OSD function,

wherein the motion depth is a distance the remote control device is moved along in each direction of 3 axes and the motion pattern is the direction the remote control device is moved along the axis,

wherein the motion pattern includes at least one of a backward operation and a forward operation towards the display unit,

wherein the method for the multi-layer OSD is performed as a menu selection method on a digital television and does not incorporate a hierarchical menu structure, and

wherein in step (b), determining the motion depth comprises;

(b1) transforming an acceleration value in a body frame of the remote control device into an acceleration value in a navigation frame;

(b2) determining whether the motion is intended by a user from the acceleration value in the navigation frame;

(b3) determining the motion depth by double integrating an absolute value of the acceleration value in the navigation frame if the motion is intended by the user.

11. The method of claim 10, wherein step (b1) comprises:

(b11) determining parameters indicating an orientation of the remote control device from the acceleration value in the body frame; and

(b12) determining the acceleration value in the navigation frame from the parameters.

12. The method of claim 11, wherein the parameters are Euler angles of a yaw angle ψ

, a pitch angle θ

, and a roll angle φ

, and are obtained as follows;

13. The method of claim 12, wherein the acceleration value A_ny of the navigation frame is determined as follows:

A_ny=cos θ

sin ψ

A_bx+(cos φ

cos ψ

+sin φ

sin θ

sin ψ

)A_by+(−

sin φ

cos ψ

+cos φ

sin θ

sin ψ

)A_bz

where A_bx, A_by, A_bz are x, y, and z-axis acceleration components of the body frame, respectively.

14. The method of claim 13, wherein step (b2) comprises determining whether the motion is intended by comparing an absolute value of the acceleration value A_ny with a predetermined threshold value C_thl and adjusting the acceleration value A_ny to Â

_ny as follows;

15. The method of claim 10, wherein in step (b), determining the motion pattern comprises:

(b1) transforming an acceleration value in a body frame of the remote control device into an acceleration value in a navigation frame;

(b2) determining whether the motion is intended from the acceleration value in the navigation frame;

(b3) determining whether a forward operation or a backward operation of the remote control device from a sign of the acceleration value in the navigation frame if the motion is intended.

16. The method of claim 10, wherein step (c) comprises increasing or decreasing a currently activated layer by one according to the motion pattern if the motion depth is larger than a predetermined threshold value.

17. The method of claim 16, wherein step (c) further comprises maintaining a currently active layer if the motion depth is not larger than the predetermined threshold value.

18. The method of claim 16, wherein step (c) further comprises resetting the motion depth in a currently active layer if the motion depth is larger than the predetermined threshold value.