Methods and apparatuses for measuring transmission quality of multimedia data
First Claim
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1. A method of measuring transmission quality of multimedia data, comprising the steps of:
- (a) a transmitter transmitting multimedia data, based on reference multimedia data, through a forward channel to a receiver;
(b) the transmitter receiving, through a return channel, transmission error information on errors occurring during the multimedia data transmission to the receiver;
(c) estimating, at the transmitter, multimedia data received by the receiver using the received transmission error information and the transmitted multimedia data;
(d) measuring, at the transmitter, a transmission quality of the multimedia data received by the receiver by comparing the estimated received multimedia data with the reference multimedia data; and
(e) performing at least one of the operations of terminating video transmission, increasing the channel bandwidth, and switching from one CODEC to another depending on evaluation results of transmission quality.
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Abstract
Methods and apparatuses for measuring transmission quality of multimedia data are provided. The method comprises the steps of a transmitter transmitting multimedia data through a channel, a receiver, having received the multimedia data from the transmitter, transmitting information on transmission error of the multimedia data to the transmitter through a return channel, the transmitter estimating the received data at the receiver using the error information returned to the transmitter, and the transmitter evaluating the transmission quality of the received data by comparing the estimated received data with reference data.
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Citations
19 Claims
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1. A method of measuring transmission quality of multimedia data, comprising the steps of:
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(a) a transmitter transmitting multimedia data, based on reference multimedia data, through a forward channel to a receiver; (b) the transmitter receiving, through a return channel, transmission error information on errors occurring during the multimedia data transmission to the receiver; (c) estimating, at the transmitter, multimedia data received by the receiver using the received transmission error information and the transmitted multimedia data; (d) measuring, at the transmitter, a transmission quality of the multimedia data received by the receiver by comparing the estimated received multimedia data with the reference multimedia data; and (e) performing at least one of the operations of terminating video transmission, increasing the channel bandwidth, and switching from one CODEC to another depending on evaluation results of transmission quality. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus for measuring transmission quality of multimedia data, comprising:
a transmitter for transmitting multimedia data based on reference multimedia data through a forward channel to a receiver, wherein the transmitter comprises; an encoding unit for encoding source multimedia data to encoded multimedia data, a received video estimation unit for receiving, on a return channel, transmission error information on received multimedia data, and estimating the received multimedia data using the received transmission error information and the transmitted multimedia data, and an evaluation unit for evaluating the transmission quality of the received multimedia data by comparing the estimated received multimedia data with the reference multimedia data; and a control unit for performing at least one of the operations of terminating video transmission, increasing the channel bandwidth, and switching from one CODEC to another depending on evaluation results of transmission quality. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of measuring transmission quality of multimedia data, comprising the steps of:
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(a) transmitting multimedia data, based upon reference multimedia data, through a channel by a transmitter to a receiver; (b) extracting a set of parameters from a video segment of received multimedia data affected by transmission errors; (c) transmitting the extracted set of parameters to the transmitter through a return channel; and (d) measuring, at the transmitter, a transmission quality by using the set of parameters and the reference multimedia data; and (e) performing at least one of the operations of terminating video transmission, increasing the channel bandwidth, and switching from one CODEC to another depending on evaluation results of transmission quality.
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19. An apparatus for measuring transmission quality of multimedia data, comprising:
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a transmitter for transmitting multimedia data, based on reference multimedia data, through a channel; and a receiver for; receiving the transmitted multimedia data, detecting transmission errors in the transmitted multimedia data, extracting a set of parameters from a video segment affected by the transmission errors, and transmitting the set of parameters through a return channel to the transmitter, wherein the transmitter comprises; an encoding unit for encoding source multimedia data to encoded multimedia data, and an evaluation unit for evaluating a transmission quality of the received multimedia data using the set of parameters and the reference multimedia data; and a control unit for performing at least one of the operations of terminating video transmission, increasing the channel bandwidth, and switching from one CODEC to another depending on evaluation results of transmission quality.
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Specification