Picture transmission method, picture transmission method program, storage meduim which stores picture transmission method program, and picture transmission apparatus

• US 20020168006A1
• Filed: 04/29/2002
• Published: 11/14/2002
• Est. Priority Date: 05/01/2001
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Yasuda, Hiroyuki
• Granted Patent: US 7,529,298 B2
• Time in Patent Office: Days
• US Class Current: 375/240.01
• CPC Class Codes: H04N 19/164 Feedback from the receiver or from the transmission channel
• CPC Class Codes: H04N 19/167 Position within a video image, e.g. region of interest [ROI]
• CPC Class Codes: H04N 19/174 the region being a slice, e.g. a line of blocks or a group of blocks
• CPC Class Codes: H04N 19/33 in the spatial domain
• CPC Class Codes: H04N 19/37 with arrangements for assigning different transmission priorities to video input data or to video coded data

Abstract

A picture transmission method is disclosed which involves encoding moving picture data and transmitting the encoded data. The picture transmission method includes the steps of encoding firstly the moving picture data into a moving picture stream for transmission at a predetermined data transfer rate, and encoding secondly, based on position information acquired from a transmission destination, a part of the moving picture data which constitutes a partial picture region for transmission at a higher resolution than the first encoding step.

Claims

1. A picture transmission method for encoding moving picture data and transmitting the encoded data, the method comprising the steps of:

encoding firstly said moving picture data into a moving picture stream for transmission at a predetermined data transfer rate; and

encoding secondly, based on position information acquired from a transmission destination, a part of said moving picture data which constitutes a partial picture region for transmission at a higher resolution than said first encoding step.

2. A picture transmission method according to claim 1, wherein said moving picture data are transmitted to a plurality of destinations;

wherein said first encoding step transmits said moving picture stream commonly to said plurality of destinations; and

wherein said second encoding step acquires said position information from each of said plurality of destinations, establishes a partial picture region in accordance with said position information from each destination, and encodes the established partial picture regions at said higher resolution for transmission to said plurality of destinations respectively.

3. A picture transmission method program for encoding moving picture data and transmitting the encoded data, the program comprising the steps of:

encoding firstly said moving picture data into a moving picture stream for transmission at a predetermined data transfer rate; and

encoding secondly, based on position information acquired from a transmission destination, a part of said moving picture data which constitutes a partial picture region for transmission at a higher resolution than said first encoding step.

4. A storage medium which stores a picture transmission method program for encoding moving picture data and transmitting the encoded data, the program comprising the steps of:

encoding firstly said moving picture data into a moving picture stream for transmission at a predetermined data transfer rate; and

encoding secondly, based on position information acquired from a transmission destination, a part of said moving picture data which constitutes a partial picture region for transmission at a higher resolution than said first encoding step.

5. A picture transmission apparatus for encoding moving picture data and transmitting the encoded data, the apparatus comprising:

first encoding means for encoding said moving picture data into a moving picture stream for transmission at a predetermined data transfer rate; and

second encoding means which, based on position information acquired from a transmission destination, encodes a part of said moving picture data which constitutes a partial picture region for transmission at a higher resolution than said first encoding means.