Systems and Methods for Improving Image Responsivity in a Multimedia Transmission System
The present invention relates to improved methods and systems for transmission of images overlaid on video, particularly images requiring high levels of responsivity (e.g. mouse pointers) relative to the underlying video, from a computing device to a television. In one embodiment, the present invention is directed to a method of transmitting at least one video frame with an overlaid image, comprising the steps of capturing at least one frame of video data separate from the overlaid image at a first rate, capturing the overlaid image separate from the frame of video data at a second rate, packetizing the captured frame of video data, packetizing the overlaid image, wherein the frame video data are in data packets separate from the overlaid image data packets, and transmitting separate video data packets and overlaid image data packets.
1 . A method of transmitting at least one video frame with an overlaid image, comprising the steps of:
a. Capturing said at least one frame of video data separate from said overlaid image at a first rate;
b. Capturing said overlaid image separate from said frame of video data at a second rate;
c. Packetizing said captured frame of video data;
d. Packetizing said overlaid image, wherein said frame video data are in data packets separate from said overlaid image data packets; and
e. Transmitting said separate video data packets and overlaid image data packets.
2 . The method of claim 1 wherein the overlaid image is a mouse icon.
3 The method of claim 1 wherein the first rate is equal to the second rate.
4 . The method of claim 1 wherein the first rate is less than the second rate.
5 . The method of claim 3 wherein the first rate is in the range of 10 to 30 times per second.
6 . The method of claim 3 wherein the second rate is in the range of 30 to 60 times per second.
7 . The method of claim 1 wherein said captured video data and said captured overlaid image are compressed prior to transmission.
8 . The method of claim 1 wherein a copy of said captured overlaid image is locally stored for use in a future transmission.
9 . The method of claim 8 wherein said video data packets and overlaid image data packets are captured and transmitted in a first time period.
10 . The method of claim 9 wherein a copy of said captured overlaid image captured from a time period prior to said first time period is transmitted with said video data packets and overlaid image data packets captured in said first time period.
11 . A method of receiving at least one video frame and an overlaid image, comprising the steps of:
a. Receiving a plurality of video data packets having video data;
b. Storing said video data packets in a buffer array;
c. Receiving a plurality of overlaid image packets having overlaid image data;
d. Storing said overlaid image packets in a memory;
e. Rendering said video data with said overlaid image by accessing a first position in said buffer array, accessing a fifo device associated with said first position in said buffer array, and, based upon data in said fifo device, accessing said memory containing said overlaid image data.
12 . The method of claim 11 wherein the overlaid image is a mouse icon.
13 . The method of claim 11 wherein said plurality of overlaid image packets comprise overlaid image data to be rendered and overlaid image data to be erased.
14 . The method of claim 14 wherein accessing said memory containing said overlaid image data includes accessing overlaid image data to be rendered and overlaid image data to be erased.
15 . The method of claim 11 further comprising the step of accessing a second position in said buffer array, accessing a fifo device associated with said second position in said buffer array, and, based upon data in said fifo device, accessing said memory containing said overlaid image.
16 . The method of claim 15 wherein accessing said memory containing said overlaid image data includes accessing overlaid image data to be rendered and overlaid image data to be erased.
17 . A method of transmitting and receiving at least one video frame with an overlaid image, comprising the steps of:
a. Capturing said at least one frame of video data separate from said overlaid image at a first rate;
b. Capturing said overlaid image separate from said frame of video data at a second rate;
c. Packetizing said captured frame of video data;
d. Packetizing said overlaid image, wherein said frame video data are in data packets separate from said overlaid image data packets;
e. Transmitting said separate video data packets and overlaid image data packets.
f. Receiving said video data packets having video data;
g. Storing said video data packets in a buffer array;
h. Receiving said overlaid image packets having overlaid image data;
i. Storing said overlaid image packets in a memory;
j. Rendering said video data with said overlaid image by accessing a first position in said buffer array, accessing a fifo device associated with said first position in said buffer array, and, based upon data in said fifo device, accessing said memory containing said overlaid image data.
18 . The method of claim 17 wherein the overlaid image is a mouse icon.
19 . The method of claim 17 wherein the first rate is in the range of 10 to 30 times per second and wherein the second rate is in the range of 30 to 60 times per second.
20 . The method of claim 17 wherein said overlaid image packets comprise overlaid image data to be rendered and overlaid image data to be erased and wherein accessing said memory containing said overlaid image data includes accessing overlaid image data to be rendered and overlaid image data to be erased.