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

• US 20050162382A1
• Filed: 11/24/2004
• Published: 07/28/2005
• Est. Priority Date: 11/26/2003
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Chang, Wook, Bang, Won-chul, Cho, Sung-jung, Choi, Eun-seok, Kim, Dong-yoon, Oh, Jong-koo, Kang, Kyoung-ho
• Granted Patent: US 8,842,069 B2
• Time in Patent Office: Days
• 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. An input apparatus for a multi-layer on-screen display (OSD), the apparatus comprising:

an acceleration sensing unit which senses an acceleration of a motion of the input apparatus;

a processing unit which determines a motion depth and a motion pattern of the input apparatus 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.

2. The apparatus of claim 1, 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 input apparatus 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.

3. The apparatus of claim 2, wherein the frame transformer determines parameters indicating an orientation of the input apparatus 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.

4. The apparatus of claim 3, wherein the frame transformer determines only an acceleration component related to the motion pattern of the input apparatus from the first acceleration value in the navigation frame.

5. The apparatus of claim 2, wherein the ADC removes a high frequency component of the acceleration sensed by the acceleration sensing unit.

6. The apparatus of claim 2, 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;

0;

if |A_ny|<

C_th1
Â

_ny={A_ny−

C_th1;

if A_ny>

C_th1
A_ny+C_th1;

if A_ny<

−

C_th1

7. The apparatus of claim 2, 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 input apparatus occurs according to a sign of the second acceleration value output from the operation signal extractor.

8. The apparatus of claim 2, 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 input apparatus.

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

10. The apparatus of claim 2, wherein the layer determinator determines that there is no motion if the motion depth is not larger than a predetermined threshold value.

11. A method of generating an input signal for a multi-layer on-screen display (OSD) using a input apparatus, the method comprising:

(a) sensing an acceleration of a motion of the input apparatus;

(b) determining a motion depth and a motion pattern of the input apparatus based on the acceleration;

(c) determining a layer to be activated from the motion depth and the motion pattern; and

(d) outputting the layer which is determined to the multi-layer OSD.

12. The method of claim 11, wherein in step (b), determining the motion depth comprises:

(b1) transforming an acceleration value in a body frame of the input apparatus 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.

13. The method of claim 12, wherein step (b1) comprises:

(b11) determining parameters indicating an orientation of the input apparatus from the acceleration value in the body frame; and

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

14. The method of claim 13, 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;

$\begin{array}{c}\mathrm{\varphi <br><br>}={\tan }^{-1}\left(\frac{A_{\mathrm{by}}}{A_{\mathrm{bz}}}\right)\\ \mathrm{\theta <br><br>}={\sin }^{-1}\left(\frac{A_{\mathrm{bx}}}{g}\right),\mathrm{or}<br><br>\text{\hspace{1em}<br><br>}<br><br>\mathrm{\theta <br><br>}={\tan }^{-1}\left(\frac{A_{\mathrm{bx}}}{\sqrt{A_{\mathrm{by}}^2+A_{\mathrm{bz}}^2}}\right)\\ \mathrm{\psi <br><br>}=0\end{array}$

where g is acceleration of gravity, and A_bx, A_by and A_bz are x, y and z-axial acceleration components of the body frame, respectively.

15. The method of claim 14, wherein the acceleration value A_ny of the navigation frame is determined as follows:

A_ny=cosθ

sinψ

A_bx+(cosφ

cosψ

+sinφ

sinθ

sinψ

)A_by+(−

sinφ

cosψ

+cosφ

sinθ

sinψ

)A_bz

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

16. The method of claim 15, 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_th1 and adjusting the acceleration value A_ny to Â

_ny as follows;

0;

if |A_ny|<

C_th1
Â

_ny={A_ny−

C_th1;

if A_ny>

C_th1, and
A_ny+C_th1;

if A_ny<

−

C_th1

step (b3) comprises determining the motion depth by double integrating an absolute value of the acceleration value Â

_ny in the navigation frame if the motion is intended by the user.

17. The method of claim 11, wherein in step (b), determining the motion pattern comprises:

(b1) transforming an acceleration value in a body frame of the input apparatus 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 input apparatus from a sign of the acceleration value in the navigation frame if the motion is intended.

18. The method of claim 11, 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.

19. The method of claim 18, wherein step (c) further comprises maintaining a currently active layer if the motion depth is not larger than the predetermined threshold value.

20. The method of claim 18, 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.