US 2003/0202575 A1 · System and method for digital video frame scanning and streaming

Abstract

A computer system executable method for use in transmitting digital video stream from a transmitting device to at least one receiving device. The method includes sending a first frame to at least one receiving device, comparing a first frame and a second frame for changed pixels, determining changed and unchanged pixels, coding said pixels to indicate the changed and unchanged pixels, transmitting the code to the at least one receiving device, and decoding the code and viewing the second frame on the at least one receiving device. The present invention also includes a computer system executable method for transmitting a digital video stream from a transmitting device to at least one receiving device where the method includes dividing a first frame and a second frame into corresponding sections, comparing each section for changed pixels, determining a changed pixel in one of the second frame sections, transmitting the section to said at least one receiving device, and integrating the section into the first frame. Also included is a combination of the methods.

Claims60

Dependent claims

A computer system executable method for use in transmitting digital video stream from a transmitting device to at least one receiving device, said method comprising:

sending a first frame to said at least one receiving device;
comparing said first frame and a second frame for changed pixels;
determining changed and unchanged pixels;
coding said pixels to indicate said changed and unchanged pixels;
transmitting said code to said at least one receiving device;
and
decoding said code and viewing said second frame on said at least one receiving device.

4 more elements

A method for transmitting a digital video stream from a transmitting device to at least one receiving device, said method comprising:

a) dividing a first frame and a second frame into corresponding sections;
b) storing said first frame in a reference memory in said transmitting device;
c) compressing said first frame;
d) transmitting said first frame to said at least one receiving device;
e) decompressing said first frame on at least one receiving device;
f) storing said second frame in a reference memory in said transmitting device;
g) comparing pixels in a first section of said first frame to a corresponding section in said second frame;
h) determining a changed pixel from a difference between said first section of said first frame to said corresponding section in said second frame, if said changed pixel determined;
i) compressing said first section in said second frame;
j) transmitting said corresponding section in said second frame to said at least one receiving device;
k) decompressing said corresponding section;
l) integrating said corresponding section into said first frame stored in said reference memory of said at least one receiving device;
m) storing said integrated first frame in said reference memory;
n) repeating steps g-m with another pair of sections subsequent to the previously processed pair of sections until each section of the first frame and the second frame has been processed;
m) repeating steps a-n with another frame of said video stream subsequent to the previously processed frame.

12 more elements

Computer software, residing on a computer-readable storage medium, comprising instructions for use in a computer system for use in transmitting a digital video stream from a transmitting device to at least one receiving device, the instructions causing the system to:

divide a first frame and a second frame into corresponding sections;
store said first frame in a reference memory in said transmitting device;
compress said first frame;
transmit said first frame to said at least one receiving device;
decompress said first frame on at least one receiving device;
store said second frame in a reference memory in said transmitting device;
compare pixels in a first section of said first frame to a corresponding section in said second frame;
determine a changed pixel from a difference between said first section of said first frame to said corresponding section in said second frame, if said changed pixel determined;
compress said corresponding section in said second frame;
transmit said corresponding section in said second frame to said at least one receiving device;
decompress said corresponding section;
integrate said decompressed corresponding section into said first frame stored in said reference memory of said at least one receiving device;
store said integrated first frame in said reference memory;
and
repeat process with another pair of sections subsequent to the previously processed pair of sections until each section of the first frame and the second frame has been processed.

12 more elements

a) divide a first frame and a second frame into corresponding sections;
b) store said first frame in a reference memory in said transmitting device;
c) compress said first frame;
d) transmit said first frame to said at least one receiving device;
e) decompress said first frame on at least one receiving device;
f) store said second frame in a reference memory in said transmitting device;
g) compare pixels in a first section of said first frame to a corresponding section in said second frame;
h) determine a changed pixel from a difference between said first section of said first frame to said corresponding section in said second frame, if said changed pixel determined;
i) compress said corresponding section in said second frame;
j) transmit said corresponding section to said at least one receiving device;
k) decompress said corresponding section;
l) integrate said decompressed corresponding section into said first frame stored in said reference memory of said at least one receiving device;
m) store said integrated first frame in said reference memory;
n) repeat steps g-m with another pair of sections subsequent to previously processed pair of sections until each section of said first frame and said second frame has been processed;
m) repeat steps a-n with another frame of said video stream subsequent to previously processed frame.

12 more elements

A computer system executable method for use in transmitting digital video stream from a transmitting device to at least one receiving device, said method comprising:

completing a first processing, said first processing comprising:
compressing a first frame of said video stream;
sending said first frame to said receiving device;
comparing a first frame and a second frame for changed pixels;
determining changed and unchanged pixels;
coding said pixels to indicate said changed and unchanged pixels;
compressing said code;
and
storing said code in a first buffer;
completing a second processing, said second processing comprising:
dividing a first frame and a second frame into corresponding sections;
comparing each section for changed pixels;
determining a changed pixel in one of said second frame sections;
transmitting said section to a second buffer;
compressing said second buffer;
determining a compression ratio for each of said first buffer and said second buffer;
and
sending buffer with a greater compression ratio to said at least one receiving device;
if said first buffer is sent, decompressing said first buffer and decoding said code and viewing said second frame on said at least one receiving device;
and
if said second buffer is sent, decompressing said second buffer and integrating said section into said first frame on said at least one receiving device and viewing said second frame on said at least one receiving device.

18 more elements

Computer software, residing on a computer-readable storage medium, comprising instructions for use in a computer system for use in transmitting digital video stream from a transmitting device to at least one receiving device, the instructions causing the system to:

complete a first process, said first process includes instructions causing the system to:
compress a first frame of said video stream;
send said first frame to said receiving device;
compare a first frame and a second frame for changed pixels;
determine changed and unchanged pixels;
code said pixels to indicate said changed and unchanged pixels;
compress said code;
and
store said code in a first buffer;
complete a second process, said second process instructions causing the system to:
divide said first frame and said second frame into corresponding sections;
compare each section for changed pixels;
determine a changed pixel in one of said second frame sections;
transmit said section to a second buffer;
compress said second buffer;
determine compression ratio for each of said first buffer to said second buffer;
send buffer with a greater compression ratio to said at least one receiving device;
if said first buffer is sent, decompress said first buffer and decode said code and view said second frame on said at least one receiving device;
and
if said second buffer is sent, decompress said second buffer and integrate said section into said first frame, and view said second frame on at least one receiving device.

17 more elements

Dependencies are inferred from the claim text.

System and method for digital video frame scanning and streaming

Life of this patent

System and method for digital video frame scanning and streaming

Life of this patent

Abstract

Claims60