Server system for performing communication over wireless network and operating method thereof
First Claim
1. A server system for performing communication over a wireless network, comprising:
- at least one client device for transmitting and receiving data over the wireless network constructed within a building, and setting an image quality level acceptable by a user when moving picture data is reproduced; and
a server device for compressing the moving picture data received from an external medium at a variably controlled compression rate according to transmission bandwidth of the current wireless network and the image quality level in response to a request of the client device, and transmitting the compressed moving picture data to the client device in a wireless fashion.
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Accused Products
Abstract
Disclosed are a server system for performing moving picture data communication with a client device over a wireless network, and an operating method thereof. A server device compresses the moving picture data received from an external medium at a variably controlled compression rate according to transmission bandwidth of the current wireless network and an image quality level set by a user in response to a request of the client device. Moreover, the server device transmits the compressed moving picture data to the client device in a wireless fashion. Therefore, transmission delay and playback delay can be avoided and data loss is avoided during a data transmission operation, such that stable data communication can be performed.
83 Citations
16 Claims
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1. A server system for performing communication over a wireless network, comprising:
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at least one client device for transmitting and receiving data over the wireless network constructed within a building, and setting an image quality level acceptable by a user when moving picture data is reproduced; and
a server device for compressing the moving picture data received from an external medium at a variably controlled compression rate according to transmission bandwidth of the current wireless network and the image quality level in response to a request of the client device, and transmitting the compressed moving picture data to the client device in a wireless fashion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An operating method of a server system, the server system comprising at least one client device for transmitting and receiving data over a wireless network and a server device for compressing moving picture data received at a predetermined compression rate in response to a request of the client device, and transmitting the compressed moving picture data to the client device in a wireless fashion, the operating method comprising the steps of:
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(a) compressing, by the server device, the moving picture data transmitted over an external medium at the predetermined compression rate;
(b) transmitting the compressed moving picture data to the client device in the wireless fashion and generating transmission state information including transmission bandwidth;
(c) determining the transmission bandwidth of the current network according to the transmission state information generated at the step (b) and reception state information received from the client device; and
(d) variably controlling a compression rate for the moving picture data according to the transmission bandwidth and an image quality level acceptable by a user of the client device and returning to the step (a). - View Dependent Claims (13, 14, 15, 16)
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Specification