Motion picture data transmission method and system
AssigneeNEC Corporation
InventorsYasuyuki Muroi, Akira Kobayashi
Life of this patent
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Abstract
A motion picture data transmission method for transmitting motion picture data from a server system via a transmission line to a client system is disclosed. The content of the transmitted motion picture data is checked and the transmission interval in each unit time is adjusted on the basis of the content data of the motion picture data. Thus, it is possible to eliminate missing of data, delay of transmission data, etc., resulting due to lack of uniformity of the transmission data quantity on a transmission line for transmitting motion picture data from a server system to a client system.
Claims9
A motion picture data transmission method performed by a server system for transmitting motion picture data from the server system via a transmission line to a client system, comprising the steps of:
- checking the content of the transmitted motion picture data;
- and
- adjusting the transmission interval in each unit time on the basis of the content data of the motion picture data,
- wherein the adjusting step comprises:
- determining when a number of packets corresponding to the motion picture data consecutively transmitted over the transmission line without any delay in transmission between any of the packets reaches a predetermined number of packets;
- when the number of packets corresponding to the motion picture data consecutively transmitted reaches the predetermined number of packets, providing a wait interval until a next packet corresponding to the motion picture data is to be transmitted of the transmission line;
- and
- adjusting the transmission interval between consecutive data blocks of packets by inserting a wait interval between a first data block of packets and a second block of packets adjacent to the first data block of packets
- wherein the wait interval is determined based in part on detected transmission characteristics of the transmission line.
A motion picture data transmission system for transmitting motion picture data from a server system via a transmission line to a client system, wherein:
- the server system includes a storing unit for storing the motion picture data to be transmitted, transmission line detecting means, and a transmission interval control unit for controlling the interval of transmission of motion picture data read out from the storing unit, the motion picture data transmission interval being controlled automatically according to the transmitted motion picture data,
- wherein the transmission interval control unit comprises:
- a counter configured to count up so as to determine when a number of packets corresponding to the motion picture data consecutively transmitted over the transmission line without any delay in transmission between any of the packets reaches a predetermined number of packets;
- and
- wherein, when the number of packets corresponding to the motion picture data consecutively transmitted reaches the predetermined number of packets, the transmission interval control unit provides a wait interval until a next packet corresponding to the motion picture data is to be transmitted of the transmission line, and
- wherein the wait interval is determined based in part on detected transmission characteristics of the transmission line as determined by the transmission line detecting means, and
- wherein the transmission interval control unit is further configured to adjust the transmission interval between consecutive data blocks of packets by inserting a wait interval between a first data block of packets and a second block of packets adjacent to the first data block of packets.
Dependencies are inferred from the claim text.