Method for transmitting video images, a data transmission system, a transmitting video terminal, and a receiving video terminal
First Claim
1. A method for transmitting video images between video terminals (1, 1′
- ) in a data transmission system, in which video images comprise frames (T0, T1, . . . , T9), the frames are divided into slices (S1-S8, SX), wherein every frame (T0, T1, . . . , T9) comprises at least two slices (S5, S3, S6;
S1, SX, S2;
S7, S4, S8) which are at least partly adjacent to each other, and consecutive frames (T0, T1, . . . , T9) have corresponding slices (S5, S1, S7;
S3, SX, S4;
S6, S2, S8), the slices (S5-S8, SX) are interleaved into packets, and the packets are transmitted, characterized in that the interleaving is performed in such a way that adjacent slices (SX, S1;
SX, S2) in the same frame (T1) are transmitted in different packets, and that corresponding slices (S5, S1, S7;
S3, SX, S4;
S6, S2, S8) of two consecutive frames (T0, T1, T2) of video images are transmitted in different packets, wherein every packet comprises only such slices which are other than adjacent to each other in the same frame and other than corresponding slices of two consecutive frames.
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Accused Products
Abstract
The invention relates to a method for transmitting video images between video terminals (1, 1′) in a data transmission system. Video images comprise frames (T0, T1,. . . T9), which are divided into slices (S1-S8, SX). Every frame (T0, T1, . . . , T9) comprises at least two slices (S5, S3, S6; S1, SX, S2; S7, S4, S8) which are at least partly adjacent to each other, and consecutive frames (T0, T1, . . . , T9) have corresponding slices (S5, S1, S7; S3, SX, S4; S6, S2, S8). The slices (S1-S8, SX) are interleaved into packets, and the packets are transmitted. The interleaving is performed in such a way that adjacent slices (SX, S1; SX, S2) in the same frame (T1) are transmitted in different packets, and that corresponding slices (S5, S1, S7; S3, SX, S4; S6, S2, S8) of two consecutive frames (T0, T1, T2) of video images are transmitted in different packets. Then every packet comprises only such slices which are other than adjacent to each other in the same frame and other than corresponding slices of two consecutive frames.
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Citations
15 Claims
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1. A method for transmitting video images between video terminals (1, 1′
- ) in a data transmission system, in which video images comprise frames (T0, T1, . . . , T9), the frames are divided into slices (S1-S8, SX), wherein every frame (T0, T1, . . . , T9) comprises at least two slices (S5, S3, S6;
S1, SX, S2;
S7, S4, S8) which are at least partly adjacent to each other, and consecutive frames (T0, T1, . . . , T9) have corresponding slices (S5, S1, S7;
S3, SX, S4;
S6, S2, S8), the slices (S5-S8, SX) are interleaved into packets, and the packets are transmitted, characterized in that the interleaving is performed in such a way that adjacent slices (SX, S1;
SX, S2) in the same frame (T1) are transmitted in different packets, and that corresponding slices (S5, S1, S7;
S3, SX, S4;
S6, S2, S8) of two consecutive frames (T0, T1, T2) of video images are transmitted in different packets, wherein every packet comprises only such slices which are other than adjacent to each other in the same frame and other than corresponding slices of two consecutive frames. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- ) in a data transmission system, in which video images comprise frames (T0, T1, . . . , T9), the frames are divided into slices (S1-S8, SX), wherein every frame (T0, T1, . . . , T9) comprises at least two slices (S5, S3, S6;
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10. A data transmission system, which comprises
means (NW) for transmitting video images between video terminals (1, 1′ - ), in which video images comprise frames,
means (6) for dividing the frames into slices (S1-S8, SX), wherein every frame (T0, T1, . . . , T9) comprises at least two slices (S5, S3, S6;
S1, SX, S2;
S7, S4, S8) which are at least partly adjacent to each other, and consecutive frames (T0, T1, . . . , T9) have corresponding slices (S5, S1, S7;
S3, SX, S4;
S6, S2, S8),means (7) for interleaving slices (S1-S8, SX) into packets, and means (8) for transmitting the packets, characterized in that the interleaving is arranged to be performed in such a way that adjacent slices (SX, S1;
SX, S2) in the same frame (T1) are arranged to be transmitted in different packets, and that corresponding slices (S5, S1, S7;
S3, SX, S4;
S6, S2, S8) of two consecutive frames (T0, T1, T2) of video images are arranged to be transmitted in different packets, wherein every packet comprises only such slices which are other than adjacent to each other in the same frame and other than corresponding slices of two consecutive frames. - View Dependent Claims (11, 12, 13)
- ), in which video images comprise frames,
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14. A transmitting video terminal (1, 1′
- ), which comprises
means (NW) for transmitting video images, in which video images comprise frames, means (6) for dividing the frames into slices (S1-S8, SX), wherein every frame (T0, T1, . . . , T9) comprises at least two slices (S5, S3, S6;
S1, SX, S2;
S7, S4, S8) which are at least partly adjacent to each other, and consecutive frames (T0, T1, . . . , T9) have corresponding slices (S5, S1, S7;
S3, SX, S4;
S6, S2, S8),means (7) for interleaving the slices (S1-S8, SX) into packets, and means (8) for transmitting the packets, characterized in that the interleaving is arranged to be performed in such a way that adjacent slices (SX, S1;
SX, S2) in the same frame (T1) are arranged to be transmitted in different packets, and that corresponding slices (S5, S1, S7;
S3, SX, S4;
S6, S2, S8) of two consecutive frames (T0, T1, T2) of video images are arranged to be transmitted in different packets, wherein every packet comprises only such slices which are other than adjacent to each other in the same frame and other than corresponding slices of two consecutive frames.
- ), which comprises
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15. A receiving video terminal (1, 1′
- ), which comprises
means (NW) for receiving video images transmitted in packets, in which video images comprise frames, which are divided into slices (S1-S8, SX), wherein every frame (T0, T1, . . . , T9) comprises at least two slices (S5, S3, S6;
S1, SX, S2;
S7, S4, S8) which are at least partly adjacent to each other, and consecutive frames (T0, T1, . . . T9) have corresponding slices (S5, S1, S7;
S3, SX, S4;
S6, S2, S8),means (8) for receiving the packets, means (7) for de-interleaving the slices (S1-S8, SX) from packets, and means (6) for forming frames from the slices (S1-S8, SX), characterized in that the de-interleaving the slices (S1-S8, SX) from packets is arranged to be performed in such a way that adjacent slices (SX, S1;
SX, S2) in the same frame (T1) are received in different packets, and that corresponding slices (S5, S1, S7;
S3, SX, S4;
S6, S2, S8) of two consecutive frames (T0, T1, T2) of video images are received in different packets, wherein every packet comprises only such slices which are other than adjacent to each other in the same frame and other than corresponding slices of two consecutive frames.
- ), which comprises
Specification