Methods and systems for updating a buffer
First Claim
1. A method for updating a buffer having a plurality of lines, comprising:
- (a) determining a read line position in the buffer, said read line position indicating a line currently being read from the buffer;
(b) partitioning the buffer into at least a first section that is safe to update and a second section that must not be updated based on the read line position; and
(c) writing data at a line of the first section to update the buffer, wherein the line follows the second section based on the read line position.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention relates to methods and systems for updating a buffer. In one aspect, the present invention provides a method for updating a buffer, which includes strategically writing to the buffer to enable concurrent read and write to the buffer. The method eliminates the need for double buffering, thereby resulting in implementation cost and space savings compared to conventional buffering approaches. The method also prevents image tearing when used to update a frame buffer associated with a display, but is not limited to such applications. In another aspect, the present invention provides efficient mechanisms to enable buffer update across a communication link. In one example, the present invention provides a method for relaying timing information across a communication link.
142 Citations
19 Claims
-
1. A method for updating a buffer having a plurality of lines, comprising:
-
(a) determining a read line position in the buffer, said read line position indicating a line currently being read from the buffer;
(b) partitioning the buffer into at least a first section that is safe to update and a second section that must not be updated based on the read line position; and
(c) writing data at a line of the first section to update the buffer, wherein the line follows the second section based on the read line position. - View Dependent Claims (2, 3, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
-
4. The method of claim 4, wherein (ii) further comprises lines of the buffer that can be updated prior to the read line position reaching said lines based on a buffer read speed and a buffer write speed.
-
16. A method for conveying timing information across a communication link between a first processor and a second processor, wherein the communication link is in hibernation mode, comprising:
-
scheduling a time event at the first processor to convey the timing information to the second processor;
initiating a link wakeup by the first processor at the occurrence of the time event; and
detecting the link wakeup at the second processor, and using the detected link wakeup timing to synchronize the first and second processors with respect to the conveyed timing information. - View Dependent Claims (17, 18, 19)
-
Specification