Source: https://patents.google.com/patent/US8581833B2/en
Timestamp: 2020-07-05 10:35:39
Document Index: 289692197

Matched Legal Cases: ['art 1280', 'art 1288', 'art 1024', 'art 1040', 'Application No. 2009', 'Application No. 07', 'Application No. 07754251', 'Application No. 07', 'Application No. 1112746', 'Application No. 07754251', 'Application No. 2009', 'Application No. 10', 'Application No. 10', 'Application No. 10', 'Application No. 096111054', 'Application No. 201010522450', 'application No. 200780001629', 'Application No. 10', 'Application No. 10', 'Application No. 10', 'Application No. 10', 'Application No. 2009', 'Application No. 2011', 'Application No. 2', 'Application No. 200780001629', 'Application No. 201010522450', 'Application No. 096111054']

US8581833B2 - System, method, and computer program product for controlling stereo glasses shutters - Google Patents
System, method, and computer program product for controlling stereo glasses shutters Download PDF
US8581833B2
US8581833B2 US12/765,771 US76577110A US8581833B2 US 8581833 B2 US8581833 B2 US 8581833B2 US 76577110 A US76577110 A US 76577110A US 8581833 B2 US8581833 B2 US 8581833B2
US12/765,771
US20100201791A1 (en
2010-04-22 Application filed by Nvidia Corp filed Critical Nvidia Corp
2010-04-22 Priority to US12/765,771 priority patent/US8581833B2/en
2010-08-12 Publication of US20100201791A1 publication Critical patent/US20100201791A1/en
2010-09-28 Priority claimed from US12/892,147 external-priority patent/US8872754B2/en
2010-10-01 Assigned to NVIDIA CORPORATION reassignment NVIDIA CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: COOK, DAVID ROBERT, FOX, THOMAS F., SLAVENBURG, GERRIT A.
2013-11-12 Publication of US8581833B2 publication Critical patent/US8581833B2/en
239000011521 glass Substances 0.000 title claims abstract description 90
238000004590 computer program Methods 0.000 title claims abstract description 6
The present application is a continuation of an application filed Aug. 4, 2006 now U.S. Pat. No. 7,724,211 under application Ser. No. 11/462,529, which, in turn, claims priority of a provisional application filed Mar. 29, 2006 under application Ser. No. 60/787,730, which is incorporated herein by reference in its entirety.
The present invention relates to video displays, and more particularly to viewing stereo video and graphics images utilizing stereo shutter glasses.
A system, method, and computer program product are provided for controlling stereo glasses shutters. In use, a right eye shutter of stereo glasses is controlled to switch between a closed orientation and an open orientation. Further, a left eye shutter of the stereo glasses is controlled to also switch between the closed orientation and the open orientation. In use, the right eye shutter and the left eye shutter of the stereo glasses may be controlled such that the right eye shutter and the left eye shutter simultaneously remain in the closed orientation for a predetermined amount of time.
TABLE 1 Timing Name: 1280x1024 75S Computed: Hor Pixels 1280 Ver Pixels 1024 Hor Frequency 105.00 kHz Ver Frequency 75.00 Hz Pixel Clock 139.44 MHz HBlank 3.6% of Htotal VBlank 26.9% of Vtotal Hor Total Time 1328 Pixels Hor Addr Time 1280 Pixels Hor Blank Start 1280 Pixels Hor Blank Time 48 Pixels Hor Sync Time 16 Pixels Hor Sync Start 1288 Pixels H Right Border 0 Pixels H Front Porch 8 Pixels Hor Sync Time 16 Pixels H Back Porch 24 Pixels H Left Border 0 Pixels Ver Total Time 1400 Lines Ver Addr Time 1024 Lines Ver Blank Start 1024 Lines Ver Blank Time 376 Lines Ver Sync Start 1040 Lines V Bottom Borde 0 Lines V Front Porch 16 Lines Ver Sync Time 112 Lines V Back Porch 248 Lines V Top Border 0 Lines
f pix=(pixels— X-direction+HBI)*(pixels— Y-direction+VBI)*f v
Thus, in one embodiment, the foregoing timing of Table I may provide an alternate 1280×1024 75 Hz stereo compatible timing specification that may co-exist with existing VESA 1280×1024 75 Hz timing specifications. In such exemplary embodiment, the existing 1280×1024 75 Hz VESA timing employs 24.2% of available time for horizontal blanking and 3.9% for vertical blanking, whereas the stereo compatible timing employs close to 27% of available time for vertical blanking and less than 4% for horizontal blanking.
Specifically, in one optional embodiment, a display may be provided that is designed for a 1600×1200 resolution, but is used at a lower resolution such as 1024×768. If such display supports the 1600×1200 resolution at 60 Hz (in accordance with the VESA standard), it is likely capable of 162 Mpix/s (in any resolution). Thus, by sending the display 1024*768 pixels with a 162 MHz pixel clock, an entire image (assuming 100 pixel horizontal blanking) may be sent in 5.33 ms (1144*768*6.173e−9). Since images at 60 Hz are received every 16.66 msec, the vertical blanking interval may thus be extended to 11.33 msec (16.66−5.33). To this end, each shutter of a pair of stereo glasses (e.g. stereo glasses 111 of FIG. 1, etc.) may remain in an open orientation for 11.33 msec out of every 33.33 msec, thereby providing a duty cycle of 34% (out of a theoretical maximum of 50%).
In another embodiment, the method 300 of FIG. 3 and the method 400 of FIG. 4 may be provided by interrupting two I2C® interface wires that typically carry EDID standard information. In an embodiment where the controller takes the form of a microcontroller, such hardware may read original display EDID information and present modified EDID information to the associated computer system. In such embodiment, drivers that use the EDID information to compute timing settings need not necessarily be modified.
1. A stereo glasses apparatus, comprising:
a right eye shutter of stereo glasses operable to switch between a closed orientation and an open orientation; and
a left eye shutter the stereo glasses operable to switch between the closed orientation and the open orientation;
wherein the right eye shutter and the left eye shutter of the stereo glasses are operable such that the right eye shutter and the left eye shutter simultaneously remain in the closed orientation for a predetermined amount of time;
wherein the right eye shutter of the stereo glasses is operable such that the right eye shutter is in the open orientation only for a duration of a first set of vertical blanking intervals, and the left eye shutter of the stereo glasses is operable such that the left eye shutter is in the open orientation only for a duration of a second set of vertical blanking intervals, by:
(a) holding the right eye shutter and the left eye shutter of the stereo glasses in the closed orientation during painting, by a display, of right display content intended for viewing by a right eye of a viewer,
(b) after the right display content is painted by the display, and during a vertical blanking interval of the first set of vertical blanking intervals which is when the right display content is held on the display by no update occurring by the display, holding the right eye shutter of the stereo glasses in the open orientation and the left eye shutter of the stereo glasses in the closed orientation,
(c) after the right display content is held on the display during the vertical blanking interval of the first set of vertical blanking intervals, holding the right eye shutter and the left eye shutter of the stereo glasses in the closed orientation during painting, by the display, of left display content intended for viewing by a left eye of the viewer,
(d) after the left display content is painted by the display, and during a vertical blanking interval of the second set of vertical blanking intervals which is when the left display content is held on the display by no update occurring by the display, holding the left eye shutter of the stereo glasses in the open orientation and the right eye shutter of the stereo glasses in the closed orientation, and
(e) repeating (a) after the left display content is held on the display during the vertical blanking interval of the second set of vertical blanking intervals.
2. The apparatus as recited in claim 1, wherein the right eye shutter and the left eye shutter of the stereo glasses are controlled independently.
3. The apparatus as recited in claim 1, wherein the right eye shutter and the left eye shutter of the stereo glasses are controlled independently utilizing a first control signal for controlling the right eye shutter and a second control signal for controlling the left eye shutter.
4. The apparatus as recited in claim 1, wherein the right eye shutter and the left eye shutter of the stereo glasses are controlled utilizing a plurality of signals, one of which causes the right eye shutter and the left eye shutter to simultaneously transition to and remain in the closed orientation.
5. The apparatus as recited in claim 1, wherein the right eye shutter and the left eye shutter of the stereo glasses are controlled to permit stereo viewing of content on the display.
6. The apparatus as recited in claim 5, wherein the display includes a liquid crystal display.
7. The apparatus as recited in claim 5, wherein the content includes stereo content.
8. The apparatus as recited in claim 5, wherein the content is buffered utilizing buffer memory resident in the display.
9. The apparatus as recited in claim 5, wherein the content is buffered utilizing buffer memory resident in a location other than a computer system, the computer system including a central processing unit and memory connected via at least one bus.
10. The apparatus as recited in claim 9, wherein the location other than the computer system includes the display.
11. The apparatus as recited in claim 5, wherein a backlight of the display is activated only when one of the shutters is in the open orientation.
12. The apparatus as recited in claim 1, wherein the right eye shutter and the left eye shutter of the stereo glasses is controlled to switch between the closed orientation and the open orientation.
13. The apparatus as recited in claim 12, wherein the controlling is performed utilizing a controller connected to a computer system via a universal serial bus interface.
14. The apparatus as recited in claim 13, wherein the controller is in communication with the stereo glasses, the display, and a graphics processor.
controlling a left eye shutter the stereo glasses to switch between the closed orientation and the open orientation;
wherein the right eye shutter of the stereo glasses is controlled such that the right eye shutter is in the open orientation only for a duration of a first set of vertical blanking intervals, and the left eye shutter of the stereo glasses is controlled such that the left eye shutter is in the open orientation only for a duration of a second set of vertical blanking intervals, by:
computer code for controlling a left eye shutter the stereo glasses to switch between the closed orientation and the open orientation;
wherein the computer program product is operable such that the right eye shutter of the stereo glasses is controlled such that the right eye shutter is in the open orientation only for a duration of a first set of vertical blanking intervals, and the left eye shutter of the stereo glasses is controlled such that the left eye shutter is in the open orientation only for a duration of a second set of vertical blanking intervals, by:
US12/765,771 2006-03-29 2010-04-22 System, method, and computer program product for controlling stereo glasses shutters Active 2027-05-31 US8581833B2 (en)
US12/765,771 US8581833B2 (en) 2006-03-29 2010-04-22 System, method, and computer program product for controlling stereo glasses shutters
US12/787,346 US8576208B2 (en) 2006-03-29 2010-05-25 System, method, and computer program product for controlling stereo glasses shutters
US12/892,147 US8872754B2 (en) 2006-03-29 2010-09-28 System, method, and computer program product for controlling stereo glasses shutters
US11/462,529 Continuation US7724211B2 (en) 2006-03-29 2006-08-04 System, method, and computer program product for controlling stereo glasses shutters
US12/787,346 Continuation US8576208B2 (en) 2006-03-29 2010-05-25 System, method, and computer program product for controlling stereo glasses shutters
US20100201791A1 US20100201791A1 (en) 2010-08-12
US8581833B2 true US8581833B2 (en) 2013-11-12
ID=38558089
US11/462,529 Active 2028-06-14 US7724211B2 (en) 2006-03-29 2006-08-04 System, method, and computer program product for controlling stereo glasses shutters
US12/765,771 Active 2027-05-31 US8581833B2 (en) 2006-03-29 2010-04-22 System, method, and computer program product for controlling stereo glasses shutters
US12/787,346 Active 2026-11-23 US8576208B2 (en) 2006-03-29 2010-05-25 System, method, and computer program product for controlling stereo glasses shutters
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Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SLAVENBURG, GERRIT A.;FOX, THOMAS F.;COOK, DAVID ROBERT;SIGNING DATES FROM 20060727 TO 20060803;REEL/FRAME:025082/0015