Abstract: A system for providing a cloud streaming-based service menu, a method and a terminal device. The terminal device selects a particular step in a step-by-step service menu to make a request for driving a content and the service device, in response to the request, provides content access information and menu step information corresponding to the particular step selected and initializes a step in the step-by-step service menu provided to the terminal device for switching a state of the service menu to a state in which an additional access of another terminal device is possible, so as to provide the initialized step-by-step service menu to another initially accessed terminal device. When the terminal device re-accesses, the service device will provide the service menu of the particular step corresponding to the menu step information to another accessed terminal device.

Abstract: A content providing service system includes a plurality of UEs configured to request and receive real time contents required to be received in real time or reserved contents reserved in advance from a service device and the service device configured to, when the real time contents or the reserved contents are requested from each of the plurality of UEs at a particular time, first allocate transmission resources to the UEs which request the real time contents and allocate the remaining transmission resources except for the first allocated transmission resources to at least some of the UEs which request the reserved contents.

Abstract: A content providing service system includes a plurality of UEs configured to request and receive real time contents required to be received in real time or reserved contents reserved in advance from a service device and the service device configured to, when the real time contents or the reserved contents are requested from each of the plurality of UEs at a particular time, first allocate transmission resources to the UEs which request the real time contents and allocate the remaining transmission resources except for the first allocated transmission resources to at least some of the UEs which request the reserved contents.

Abstract: A system for providing a cloud streaming-based service menu, a method and a terminal device. The terminal device selects a particular step in a step-by-step service menu to make a request for driving a content and the service device, in response to the request, provides content access information and menu step information corresponding to the particular step selected and initializes a step in the step-by-step service menu provided to the terminal device for switching a state of the service menu to a state in which an additional access of another terminal device is possible, so as to provide the initialized step-by-step service menu to another initially accessed terminal device. When the terminal device re-accesses, the service device will provide the service menu of the particular step corresponding to the menu step information to another accessed terminal device.

Abstract: A system for evaluating video quality using auxiliary information of a codec includes a video transmitter that includes a source video input unit for inputting source video, an encoding unit for encoding the input source video, a decoding unit for decoding encoded video data, and a video quality evaluation unit for evaluating video quality using the decoded video data. The encoding unit transmits auxiliary information required for video quality evaluation, among information acquired in an encoding procedure, to the video quality evaluation unit. The video quality evaluation unit evaluates video quality using the decoded video data received from the decoding unit, and the auxiliary information received from the encoding unit.

Abstract: Disclosed herein are systems and methods for evaluating video quality. The systems include a video transmitter and a video receiver. The transmitter generates feature parameters from a reference video to be transmitted and transmits the generated feature parameters along with compressed video data via a network. The video receiver receives the feature parameters and the compressed video data via the network, evaluates the video quality of the received video using the feature parameters and transmits video quality evaluation results to the video transmitter via the network.

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.

Abstract: A system for evaluating video quality using auxiliary information of a codec includes a video transmitter that includes a source video input unit for inputting source video, an encoding unit for encoding the input source video, a decoding unit for decoding encoded video data, and a video quality evaluation unit for evaluating video quality using the decoded video data. The encoding unit transmits auxiliary information required for video quality evaluation, among information acquired in an encoding procedure, to the video quality evaluation unit. The video quality evaluation unit evaluates video quality using the decoded video data received from the decoding unit, and the auxiliary information received from the encoding unit.

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.

Abstract: A method for controlling multimedia based on RTSP is disclosed. The method comprises the steps of: a) confirming a state of a multimedia terminal when a user of the multimedia terminal selects a multimedia play; b) generating a PLAY message of requesting selected media data based on the result of step a) and transmitting the PLAY message to a media server through a wireless data communication network; c) determining whether the state of the multimedia terminal is varied after step b); and generating a control message corresponding to the varied state when the state of the multimedia terminal is varied and transmitting the control message to the server.

Abstract: Disclosed herein are systems and methods for evaluating video quality. The systems include a video transmitter and a video receiver. The tranmitter generates feature parameters from a reference video to be transmitted and transmits the generated feature parameters along with compressed video data via a network. The video receiver receives the feature parameters and the compressed video data via the network, evaluates the video quality of the received video using the feature parameters and transmits video quality evaluation results to the video transmitter via the network.