Systems, methods, and devices for video stream synchronization
Systems, methods, and devices perform synchronization operations for video streams. Methods include receiving a video frame at a frame capture unit, the video frame being included in a stream of video data, buffering the video frame using a buffer coupled between the frame capture unit and a frame display unit, and determining an offset value based, at least in part, on a refresh rate associated with the frame capture uni. Methods further include reading, using the frame display unit, the video frame from the buffer after a designated period of time defined by the offset value.
1 . A method comprising:
receiving a video frame at a frame capture unit, the video frame being included in a stream of video data;
buffering the video frame using a buffer coupled between the frame capture unit and a frame display unit;
determining an offset value based, at least in part, on a refresh rate associated with the frame capture unit; and
reading, using the frame display unit, the video frame from the buffer after a designated period of time defined by the offset value.
2 . The method of claim 1 further comprising:
synchronizing a pixel clock of the frame capture unit and the frame display unit.
3 . The method of claim 1 , wherein the buffering further comprises:
writing, using the frame capture unit, the video frame to a plurality of lines of the buffer.
4 . The method of claim 1 further comprising:
performing a compensation operation to update the offset value.
5 . The method of claim 1 , wherein a size of a video input of the frame capture unit is smaller than a size of a video output of the frame display unit.
6 . The method of claim 5 further comprising:
determining the offset value based on a plurality of reference values.
7 . The method of claim 1 , wherein a number of channels included in a video input of the frame capture unit is smaller than a number of channels included in a video output of the frame display unit.
8 . The method of claim 7 further comprising:
determining the offset value based on a first plurality of reference values; and
determining an additional offset value based on a second plurality of reference values.
9 . The method of claim 1 , wherein the stream of video data comprises augmented reality video data.
10 . A system comprising:
a memory device comprising a buffer, the buffer being configured to buffer video data; and
a processing device comprising a frame capture unit and a frame display unit, the processing device configured to:
receive a video frame at the frame capture unit, the video frame being included in a stream of video data;
determine an offset value based, at least in part, on a refresh rate associated with the frame capture unit; and
read, using the frame display unit, the video frame from the buffer after a designated period of time defined by the offset value.
11 . The system of claim 10 , wherein the processing device is further configured to:
synchronize a pixel clock of the frame capture unit and the frame display unit.
12 . The system of claim 10 , wherein a size of a video input of the frame capture unit is smaller than a size of a video output of the frame display unit.
13 . The system of claim 12 , wherein the processing device is further configured to:
determine the offset value based on a plurality of reference values.
14 . The system of claim 10 , wherein a number of channels included in a video input of the frame capture unit is smaller than a number of channels included in a video output of the frame display unit.
15 . The system of claim 14 , wherein the processing device is further configured to:
determine the offset value based on a first plurality of reference values; and
determine an additional offset value based on a second plurality of reference values.
16 . A device comprising:
processing elements configured to:
receive a video frame at the frame capture unit, the video frame being included in a stream of video data;
buffer the video frame using a buffer coupled between the frame capture unit and a frame display unit;
determine an offset value based, at least in part, on a refresh rate associated with the frame capture unit; and
read, using the frame display unit, the video frame from the buffer after a designated period of time defined by the offset value.
17 . The device of claim 16 , wherein the processing elements are further configured to:
synchronize a pixel clock of the frame capture unit and the frame display unit.
18 . The device of claim 16 , wherein a size of a video input of the frame capture unit is smaller than a size of a video output of the frame display unit, and wherein the processing elements are further configured to:
determine the offset value based on a plurality of reference values.
19 . The device of claim 16 , wherein a number of channels included in a video input of the frame capture unit is smaller than a number of channels included in a video output of the frame display unit.
20 . The device of claim 19 , wherein the processing elements are further configured to:
determine the offset value based on a first plurality of reference values; and
determine an additional offset value based on a second plurality of reference values.