Multiplex communications – Data flow congestion prevention or control – Flow control of data transmission through a network
Reexamination Certificate
2007-12-04
2007-12-04
Harper, Kevin C. (Department: 2616)
Multiplex communications
Data flow congestion prevention or control
Flow control of data transmission through a network
C370S238000, C370S412000, C370S468000
Reexamination Certificate
active
10220291
ABSTRACT:
Method for ordering and transmission of digital data, particularly video signals, from a transmitter to a single receiver or a group of receivers where other transmission channels are searched for finding a reasonable alternative. A data signal is sent with a request for transmission of a determined video signal from a receiver to a transmitter. A data packet (I1), being a first part of the signal, is transmitted from the transmitter over a satellite channel. A following part of the signal is transmitted as another data packet (I2) over a narrowband communication channel, such as a low-cost Internet channel. Supervision of the received non-used data amount is carried out in a buffer storage at the receiver. By registering non-used data (buffer amount) at the receiver below a certain level a warning signal will be sent from the receiver to the transmitter. When receiving this warning signal the transmitter initiated transmission to the receiver of a further data packet (I1′) of the signal over the satellite channel, for thereafter continuing with transmission of a further signal amount (I2′) over the narrowband channel. This alternating transmission will be continued to save transmission capacity over the satellite connection and at the same time to maintain a transmission capacity which results in a satisfying data content in the transmitted signal.
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Dennison, Schultz & Macdonald
Harper Kevin C.
IP-Vision AB
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