IP video terminal with function for controlling video transmission/reception bandwidth and image quality and control method thereof
First Claim
1. An IP (Internet Protocol) video terminal with a function for controlling video transmission/reception bandwidth and image quality, comprising:
- a control module for supporting a user'"'"'s manipulation so that the bandwidth and image quality can be controlled;
a video module comprising a camera and an LCD (Liquid Crystal Display) for receiving an input from the camera to compress the received input into digital data to be used in IP communication according to a bandwidth value and an image quality value set by the control module, or receiving data over the Internet to decompress the received data according to the set bandwidth value and the set image quality value and output the decompressed data to the LCD;
an audio module comprising a microphone and a speaker for receiving an input from the microphone to compress the received input into digital data to be used in the IP communication according to the bandwidth value and the image quality value set by the control module, or receiving data over the Internet to decompress the received data and output the decompressed data to the speaker;
a media processor for processing the data encoded in the video and audio modules so that the data can be transmitted over the Internet, or converting the data received over the Internet into a data format recognizable in the video and audio modules;
a network module provided between the media processor and the Internet for interfacing with the Internet through an Internet line; and
a main processor for receiving the set bandwidth value and the set image quality value from the control module, converting the set bandwidth value and the set image quality value into QPs (Quantization parameters), and setting the QPs as encoding and decoding-related factors in the video module.
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Accused Products
Abstract
Disclosed are an IP (Internet Protocol) video terminal with a function for controlling video transmission/reception bandwidth and image quality and a control method thereof. While a call is in progress, the IP video terminal exchanges information with an opposite party and controls a transmission rate and quality of video from the opposite party. Moreover, while the call is in progress, the IP video terminal recognizes a network state and automatically controls video transmission quality according to a change of the network state. The IP video terminal can acquire more natural video by lowering a bandwidth value or/and an image quality value when quality of video from the opposite party is bad during the call.
29 Citations
13 Claims
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1. An IP (Internet Protocol) video terminal with a function for controlling video transmission/reception bandwidth and image quality, comprising:
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a control module for supporting a user'"'"'s manipulation so that the bandwidth and image quality can be controlled;
a video module comprising a camera and an LCD (Liquid Crystal Display) for receiving an input from the camera to compress the received input into digital data to be used in IP communication according to a bandwidth value and an image quality value set by the control module, or receiving data over the Internet to decompress the received data according to the set bandwidth value and the set image quality value and output the decompressed data to the LCD;
an audio module comprising a microphone and a speaker for receiving an input from the microphone to compress the received input into digital data to be used in the IP communication according to the bandwidth value and the image quality value set by the control module, or receiving data over the Internet to decompress the received data and output the decompressed data to the speaker;
a media processor for processing the data encoded in the video and audio modules so that the data can be transmitted over the Internet, or converting the data received over the Internet into a data format recognizable in the video and audio modules;
a network module provided between the media processor and the Internet for interfacing with the Internet through an Internet line; and
a main processor for receiving the set bandwidth value and the set image quality value from the control module, converting the set bandwidth value and the set image quality value into QPs (Quantization parameters), and setting the QPs as encoding and decoding-related factors in the video module.
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2. A control method of an IP (Internet Protocol) video terminal with a function for controlling video transmission/reception bandwidth and image quality, comprising the step of:
(a) while a call is in progress, controlling video transmission bandwidth and quality of the IP video terminal. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
Specification