Data communication speed control system, transmitter apparatus and receiver apparatus
First Claim
1. A data communication speed control system for controlling data communication speed between a transmitting apparatus, which transmits a data, and a receiving apparatus, which receives said data from the transmitting apparatus via the stated communication channel, said system comprises:
- said receiving apparatus that sequentially detects momentary real transmission speed in said communication channel, on the basis of the received data that has been delivered from said transmitting apparatus, and sequentially notifies the real transmission speed to said transmitting apparatus; and
said transmitting apparatus that sequentially adjusts the transmission speed of said data that is to be sent to said receiving apparatus, on the basis of said real transmission speed, and controls said data communication speed between itself and said receiving apparatus.
1 Assignment
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Accused Products
Abstract
This invention aims to make it possible to realize data communication having excellent communication throughput and good quality even if the communication state fluctuates. According to the present invention, by sequentially adjusting the transmission speed of data that is to be sent to the portable radio terminal 22 on the basis of momentary real transmission speed in the communication channel 6 that has been fed back from the portable radio terminal 22, and hereby controlling the data communication speed between itself and the portable radio terminal 22, it is able to execute data transmission processing that is corresponding to changes of transmission speed in the communication channel 6, in this way, it is able to realize data communication having excellent communication throughput and good quality even if the communication state fluctuates.
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Citations
9 Claims
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1. A data communication speed control system for controlling data communication speed between a transmitting apparatus, which transmits a data, and a receiving apparatus, which receives said data from the transmitting apparatus via the stated communication channel, said system comprises:
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said receiving apparatus that sequentially detects momentary real transmission speed in said communication channel, on the basis of the received data that has been delivered from said transmitting apparatus, and sequentially notifies the real transmission speed to said transmitting apparatus; and
said transmitting apparatus that sequentially adjusts the transmission speed of said data that is to be sent to said receiving apparatus, on the basis of said real transmission speed, and controls said data communication speed between itself and said receiving apparatus. - View Dependent Claims (2)
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3. A transmitting apparatus which comprises:
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receiving means for sequentially receiving notifications of momentary real transmission speed in the stated communication channel that has been sequentially detected on the basis of received data that has been received via said communication channel, from a receiving apparatus; and
transmission control means for sequentially adjusting the transmission speed of data that is to be sent to said receiving apparatus, on the basis of said real transmission speed, and hereby controlling said data communication speed between itself and said receiving apparatus. - View Dependent Claims (4)
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5. A receiving apparatus which comprises:
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real transmission speed notifying means for sequentially detecting momentary real transmission speed in the stated communication channel on the basis of the received data that has been received via said communication channel, and sequentially notifying it to a transmitting apparatus; and
receiving means for receiving data whose communication speed in said communication channel has been controlled by the fact that the transmission speed has been sequentially adjusted by said transmitting apparatus on the basis of said real transmission speed. - View Dependent Claims (6)
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7. A data communication speed control system for controlling data communication speed between a transmitting apparatus, which transmits a data, and a receiving apparatus, which receives said data from the transmitting apparatus via the stated communication channel, said system comprises:
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said receiving apparatus that sequentially detects momentary real transmission speed in said communication channel, on the basis of the received data that has been delivered from said transmitting apparatus, and sequentially notifies the real transmission speed to said transmitting apparatus; and
said transmitting apparatus that sequentially adjusts the compression rate of said data that is to be sent to said receiving apparatus, on the basis of said real transmission speed.
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8. A transmitting apparatus which comprises:
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receiving means for sequentially receiving notifications of momentary real transmission speed in said communication channel that has been sequentially detected on the basis of received data that has been received via the stated communication channel, from a receiving apparatus; and
transmission control means for sequentially adjusting the compression rate of data that is to be sent to said receiving apparatus, on the basis of said real transmission speed, and for transmitting the data.
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9. A receiving apparatus which comprises:
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real transmission speed notifying means for sequentially detecting momentary real transmission speed in the stated communication channel on the basis of the received data that has been received via said communication channel, and sequentially notifying it to a transmitting apparatus; and
receiving means for receiving data whose compression rate has been sequentially adjusted by said transmitting apparatus on the basis of said real transmission speed.
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Specification