Responding to change of state of control on device disposed on an interactive display surface

• US 7,570,249 B2
• Filed: 03/30/2005
• Issued: 08/04/2009
• Est. Priority Date: 03/30/2005
• Status: Active Grant

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Han, Allen Ming-kuang, Yee, Dawson, Chen, Christina Summer, Silverstein, Dana Lu
• Primary Examiner(s): Awad; Amr
• Assistant Examiner(s): PELLIGRINO, JEFFREY S
• Application Number:
  US11/094,077
• Publication Number:
  US 20060227099A1
• Time in Patent Office: 1,588 Days
• Field of Search: 345168-172, 345/182, 345/184, 345/156, 345/157, 345/163, 345/166, 178/18.01, 178/18.05, 178/19.01, 178/19.05
• US Class Current: 345/166
• CPC Class Codes: G06F 3/0393 Accessories for touch pads or touch screens, e.g. mechanical guides added to touch screens for drawing straight lines, hard keys overlaying touch screens or touch pads
• CPC Class Codes: G06F 3/0425 using a single imaging device like a video camera for tracking the absolute position of a single or a plurality of objects with respect to an imaged reference surface, e.g. video camera imaging a display or a projection screen, a table or a wall surface, on which a computer generated image is displayed or projected tracking a projected light spot to determine a position on a display surface G06F3/0386

Abstract

A user input device includes one or more user controls that enable a user to selectively imports bits of data by activating the control when the user input devices proximate to a display surface of an interactive display system. By depressing or otherwise activating a user control, the user causes an element within the user input device to move through a plane of change so that the state of a parameter sensed by the interactive display system changes and is detected. In the examples provided, the parameter relates to infrared light that is reflected or absorbed or produced by a component of the user input device and is thus detected by an infrared sensitive camera. The input can be a single bit, or comprise a plurality of bits corresponding to a specific pattern.

Claims

1. An input device adapted to be used in connection with an interactive display system that has an interactive display surface, the input device comprising:

(a) a housing that is adapted to be placed in proximity to the interactive display surface;

(b) a power supply disposed within the housing;

(c) an electronic display coupled to the power supply, the electronic display being in one of an energized state or a non-energized state, and wherein when the electronic display is in the energized state, the electronic display displays a pattern that is then detectable by the interactive display system and is an input to the interactive display system;

(d) a user control disposed within the housing, the user control being movable from a first position to a second position, movement of the user control from the first position to the second position causing the electronic display to enter the energized state wherein, while the electronic display remains in the energized state and the input device is in sufficient proximity to the interactive display system to be detectable by the same, an input is provided to the interactive display system.

2. The input device of claim 1, wherein the user control comprises a plunger that moves through a plane of change when moved from the first position to the second position such that when in the second position the plunger activates a switch that connects the electronic display to the power supply.

3. The input device of claim 1, wherein the electronic display comprises at least two layers, the at least two layers comprising:

a backplane top layer that is absorptive of certain wavelengths of light and reflective of other wavelengths of light, and

an LCD bottom layer that comprises an LCD display which displays the pattern that is then detectable by the interactive display system and is an input to the interactive display system.

4. The input device of claim 3, the electronic display further comprising an intermediate layer that provides IR backlighting for the LCD bottom layer.

5. The input device of claim 1, wherein the electronic display is coupled to and controlled by the user control such that, in addition to entering the energized state in response to the movement of the user control from the first position to the second position, the electronic display also passes from a first position through a plane of change to a second position, the plane of change corresponding to a point where the pattern being displayed by the electronic display is detected by the interactive display system.

6. The input device of claim 1, wherein the electronic display, while in the energized state, alters a static pattern of IR reflective or absorptive elements included on the bottom of the user input device.

7. The input device of claim 1, further comprising one or more additional user controls such that the input device comprises a plurality of user controls disposed within the housing, each of the plurality of user controls being simultaneously movable between a first position and a second position, and wherein the electronic display enters the energized state in response to the movement of one or more of the plurality of user controls from the first position to the second position, and wherein the pattern displayed by the electronic display when in the energized state is one of a plurality of patterns which correspond to different states of the positions of the plurality of user controls such that a different input is provided to the interactive display for each of the plurality of patterns.

8. The input device of claim 1, wherein the power supply is a battery power supply.