Multiple display synchronization apparatus and method
AssigneeIntergraph Corporation
InventorsGary Shelton, Michael Farmer, Dale Kirkland
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Abstract
A method of synchronizing, at a system frame display rate, a first set of frames displayed by a first monitor with a second set of frames by a second monitor, utilizes frame production rates of the two sets of frames to set the system frame display rate. More particularly, the first set of frames are produced at a first frame production rate by a first graphics engine, and the second set of frames are produced at a second frame production rate by a second graphics engine. The first frame production rate and second frame production rate first are compared to determine which frame production rate is slower. The system frame display rate then is set to be no greater than the slower of the two frame production rates.
Claims24
A method of synchronizing, at a system frame display rate, a first set of frames displayed by a first monitor with a second set of frames displayed by a second monitor, the first set of frames being produced by a first graphics engine at a first frame production rate, the second set of frames being produced by a second graphics engine at a second frame production rate, the method comprising the steps of:
- A. comparing the first frame production rate and the second frame production rate to determine which frame production rate is slower;
- and
- B. setting the system frame display rate to a set display rate that is no greater than the slower of the first frame production rate and the second frame production rate.
An apparatus for synchronizing, at a system frame display rate, a first set of frames displayed by a first monitor with a second set of frames displayed by a second monitor, the first set of frames being produced by a first graphics engine at a first frame production rate, the second set of frames being produced by a second graphics engine at a second frame production rate, the apparatus comprising:
- a comparitor for comparing the first frame production rate and the second frame production rate to determine which frame production rate is slower;
- and
- means for setting the system frame display rate to a set display rate that is no greater than the slower of the first frame production rate and the second frame production rate.
A method of synchronizing, at a system frame display rate, a first set of frames displayed by a first monitor with a second set of corresponding frames displayed by a second monitor, the first set of frames being produced by a first graphics engine at a first frame production rate, the second set of frames being produced by a second graphics engine at a second frame production rate, the method comprising:
- comparing the first frame production rate and the second frame production rate to determine which frame production rate is slower;
- setting the system frame display rate to a set display rate that is no greater than the slower of the first frame production rate and the second frame production rate;
- and
- aligning the horizontal sync pulse edges of each frame in the first set with the respective horizontal sync pulse edges of each corresponding frame in the second set.
A method of synchronizing, at a system frame display rate, a first set of frames displayed by a first monitor with a second set of corresponding frames displayed by a second monitor, the first set of frames being produced by a first graphics engine at a first frame production rate, the second set of frames being produced by a second graphics engine at a second frame production rate, the method comprising:
- determining the slower of the first frame production rate and the second frame production rate;
- setting the system frame display rate to be no greater than the slower of the first frame production rate and the second frame production rate;
- the first monitor displaying the first set of frames at the system frame display rate;
- and
- the second monitor displaying the second set of frames at the system frame display rate.
Dependencies are inferred from the claim text.