摘要:
A system and method for Video-on-Demand (VOD) satisfying the desire of 'surfers'. The process entails a server operating in a standard NVOD mode, whereby it continuously sends multiple copies of each program on separate channels. Each copy is delayed by a staggered time interval.The invention provides a way to fulfill a VOD user request asynchronous with the start of a NVOD transmission but which still makes primary use of the NVOD transmission for that requestor. The system and method combines independent server service satisfying an asynchronous request for only a short duration, usually less than or equal to the NVOD staggered time interval, and then aligns that requestor with an immediately previously commenced NVOD transmission.
摘要:
A rights controlling concentrator (RCC) is an apparatus for separating and controlling "rights of receiving" and "rights of transmitting" of a group of stations or groups of stations on a ring-of-trees local area network. RCC elements perform collectively to separately control, limit and/or make available the "rights of receiving" and the "rights of transmitting" of a group of stations or groups of stations. This ensures that its membership is only forwarded frames transmitted by an external station which has a destination within the membership, and that the external stations only be forwarded frames transmitted by the membership which have a destination within the membership, and that the external stations only be forwarded frames transmitted by the membership which have a destination within the external stations. Frames that are transmitted to a destination in one group traverse only stations within that group. Frames that are deemed by the RCC not to be of interest to any group of stations are withheld from that group by the RCC controlling both frame receiving and transmitting rights. This significantly reduces the workload of groups of stations, because frames are not passed through station groups that are not necessary for the frames to reach their destination. Furthermore, since data frames are handled by fewer stations, the reliability of the main FDDI ring is increased.
摘要:
A system, method and apparatus for Video-on-demand (VOD) satisfying the desire of 'surfers'. The process entails a server operating in a standard Near-Video-on-demand (NVOD) mode, whereby it repeatedly transmits multiple copies of each program on separate channels. Each copy is delayed by a staggered time interval. The server also repeatedly transmits a beginning portion of each NVOD program of a duration up to the staggered time interval. The invention provides a way to fulfill a VOD user requests asynchronous with the start of a NVOD transmission but which still makes primary use of the NVOD transmission for that requestor. The invention further advantageously provides fixed asset utilization in a predictable manner.
摘要:
In standard token-based LANs (e.g., FDDI, Token Ring) an equal share of the ring bandwidth is made available to each node. Certain nodes (e.g., bridges, routers, servers) require a larger representation (bandwidth) than other nodes. A surrogate (bridge/router) node is presented which achieves this in a standard compliant manner. The bridge/router may serve as a surrogate on each ring representing multiple stations from the other ring. The multiplicity of stations is adjusted either statically or dynamically to provide sufficient added bandwidth to the surrogate to reduce delay and packet loss characteristic of the conventional single station bridge or router. The increased bandwidth utilization and FDDI ring performance resulting from the implementation of this invention is transparent to the individual stations and the ring in a way that is advantageous to both single media and multimedia usages within defined network local and non-local areas.
摘要:
A rights controlling concentrator (RCC) is an apparatus for separating and controlling "rights of receiving" and "rights of transmitting" of a group of stations or groups of stations on a ring-of-trees local area network. RCC elements perform collectively to separately control, limit and/or make available the "rights of receiving" and the "rights of transmitting" of a group of stations or groups of stations. This ensures that its membership is only forwarded frames transmitted by an external station which has a destination within the membership, and that the external stations only be forwarded frames transmitted by the membership which have a destination within the membership, and that the external stations only be forwarded frames transmitted by the membership which have a destination within the external stations. Frames that are transmitted to a destination in one group traverse only stations within that group. Frames that are deemed by the RCC not to be of interest to any group of stations are withheld from that group by the RCC controlling both frame receiving and transmitting rights. This significantly reduces the workload of groups of stations, because frames are not passed through station groups that are not necessary for the frames to reach their destination. Furthermore, since data frames are handled by fewer stations, the reliability of the main FDDI ring is increased.
摘要:
In standard token-based LANs (e.g., FDDI, Token Ring) an equal share of the ring bandwidth is made available to each node. Certain nodes (e.g., bridges, routers, servers) require a larger representation (bandwidth) than other nodes. A surrogate (bridge/router) node is presented which achieves this in a standard compliant manner. The bridge/router may serve as a surrogate on each ring representing multiple stations from the other ring. The multiplicity of stations is adjusted either statically or dynamically to provide sufficient added bandwidth to the surrogate to reduce delay and packet loss characteristic of the conventional single station bridge or router. The increased bandwidth utilization and FDDI ring performance resulting from the implementation of this invention is transparent to the individual stations and the ring in a way that is advantageous to both single media and multimedia usages within defined network local and non-local areas.
摘要:
A system, method and apparatus for Video-on-demand (VOD) satisfying the desire of 'surfers'. The process entails a server operating in a standard Near-Video-on-demand (NVOD) mode, whereby it repeatedly transmits multiple copies of each program on separate channels. Each copy is delayed by a staggered time interval. The server also repeatedly transmits a beginning portion of each NVOD program of a duration up to the staggered time interval. The invention provides a way to fulfill a VOD user requests asynchronous with the start of a NVOD transmission but which still makes primary use of the NVOD transmission for that requestor. The invention further advantageously provides fixed asset utilization in a predictable manner.