Determining a synchronization relationship

• US 9,432,620 B2
• Filed: 02/06/2015
• Issued: 08/30/2016
• Est. Priority Date: 09/15/2010
• Status: Active Grant

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Apostolopoulos, John G., Samadani, Ramin, Trott, Mitchell
• Primary Examiner(s): Nguyen, Joseph J
• Application Number:
  US14/616,402
• Publication Number:
  US 20150156453A1
• Time in Patent Office: 571 Days
• US Class Current: 1/1
• CPC Class Codes: H04N 7/142 Constructional details of the terminal equipment, e.g. arrangements of the camera and the display
• CPC Class Codes: H04N 7/147 Communication arrangements, e.g. identifying the communication as a video-communication, intermediate storage of the signals selecting H04Q
• CPC Class Codes: H04N 7/15 Conference systems

Abstract

An example partially transmissive display is provided to output data to a user. The partially transmissive display can include a capture device to receive captured data transmitted through the partially transmissive display, and data generated on and/or reflected from the partially transmissive display. A cross-talk reduction component may be included to receive the captured data and a remote signal comprising displayed content on the partially transmissive display. The cross-talk component may utilize the remote signal and the captured data to reduce cross-talk and output a corrected signal to one or more remote participants.

Claims

1. A visual collaborative system comprising:

a partially transmissive display to output transmissive data and source data, the transmissive data corresponding to visual data transmitted through the partially transmissive display, the source data associated with collaborative content displayed on the partially transmissive display;

a capture device to receive the transmissive data and the source data and output a capture signal; and

a cross-talk reduction component to;

receive the capture signal and a remote signal, the remote signal comprising the collaborative content to be displayed on the partially transmissive display;

using the remote signal, reduce cross-talk between the transmissive data and the source data to generate a corrected signal; and

output the corrected signal to one or more remote participants, the corrected signal comprising the captured signal with reduced cross-talk.

2. The visual collaborative system of claim 1, wherein the source data comprises remote visual data generated on the partially transmissive display based on the remote signal.

3. The visual collaborative system of claim 1, further comprising:

a projector to receive the remote signal and project the collaborative content onto the partially transmissive display;

wherein the source data comprises reflected light, corresponding to the projected collaborative content, from the partially transmissive display.

4. The visual collaborative system of claim 3, wherein reducing the cross-talk comprises forward modeling the remote signal to estimate the cross-talk of the reflected light affecting the capture signal.

5. The visual collaborative system of claim 4, wherein reducing the cross-talk further comprises subtracting the estimated cross-talk from the capture signal.

6. The visual collaborative system of claim 4, wherein forward modeling the remote signal comprises (i) mapping the remote signal to a projected signal output from the projector, (ii) mapping the projected signal to the reflected light from the partially transmissive display, and (iii) mapping the reflected light received by the capture device to the capture signal output by the capture device.

7. The visual collaborative system of claim 3, wherein reducing the cross-talk comprises determining a synchronization relationship between the projected collaborative content and the capture signal.

8. The visual collaborative system of claim 7, wherein the projector operates on a first clock and the capture device operates on a second clock, and wherein determining the synchronization relationship comprises determining an offset based on a time difference between the first clock and the second dock.

9. The visual collaborative system of claim 1, wherein reducing the cross-talk comprises matching frames between the remote signal and the capture signal received by the cross-talk reduction component.

10. The visual collaborative system of claim 1, wherein reducing the cross-talk comprises processing the remote signal and the capture signal to determine a best blend for a sequential set of adjacent frames between the remote signal and the capture signal.

11. A method for reducing cross-talk comprising:

receiving, via a cross-talk reduction component of a visual collaborative system, a remote signal comprising collaborative content to be displayed on a partially transmissive display;

receiving, via the cross-talk reduction component, a capture signal corresponding to visual data transmitted through the partially transmissive display, and source data associated with the collaborative content displayed on the partially transmissive display;

using the remote signal, reducing, by the cross talk reduction component, cross-talk between the transmissive data and the source data to generate a corrected signal; and

outputting, by the cross-talk reduction component, the corrected signal to one or more remote participants, the corrected signal comprising the captured signal with reduced cross-talk.

12. The method of claim 11, wherein the source data comprises remote visual data generated on the partially transmissive display based on the remote signal.

13. The method of claim 11, wherein the collaborative content is projected onto the partially transmissive display by a projector based on the remote signal, and wherein the source data comprises reflected light, corresponding to the projected collaborative content, from the partially transmissive display.

14. A non-transitory computer-readable medium storing instructions for reducing cross-talk, wherein the instructions, when executed by one or more processors of a cross-talk reduction component, cause the cross-talk reduction component to:

receive a remote signal comprising collaborative content to be displayed on a partially transmissive display;

receive a capture signal corresponding to visual data transmitted through the partially transmissive display, and source data associated with the collaborative content displayed on the partially transmissive display;

using the remote signal, reduce cross-talk between the transmissive data and the source data to generate a corrected signal; and

output the corrected signal to one or more remote participants, the corrected signal comprising the captured signal with reduced cross-talk.

15. The non-transitory computer-readable medium of claim 14, wherein the source data comprises remote visual data generated on the partially transmissive display based on the remote signal.