Apparatus having lower data transmission rate and less degradation of image quality and method therefor
First Claim
1. An apparatus having a lower data-rate for transmitting and receiving data by way of a communications network, comprising:
- a screen size determining means for determining a screen size of image signals input according to control signals;
an encoding means for encoding the image signals according to the determined screen size;
a control means for outputting the control signals which determine the screen size by evaluating a state of the communications network, and transmitting the encoded image signals through the communications network;
a decoding means for decoding the image signals transmitted through the communications network; and
a display means for displaying the decoded image signals.
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Accused Products
Abstract
An image display apparatus having a lower data transmission speed and less degradation of the image quality for displaying the image having a lower data-rate according to the state of a communications network and a method for enabling the same are provided. The apparatus, which transmits and receives data by way of the communications network, includes a screen size determiner which determines the screen size of image signals input according to control signals; an encoder which encodes the image signals according to the determined screen size; a controller which outputs control signals which determine the screen size by evaluating the state of the communications network and for transmitting the encoded image signals through the communications network; a decoder which decodes the image signals transmitted through the communications network; and a display which displays the decoded image signals.
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Citations
16 Claims
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1. An apparatus having a lower data-rate for transmitting and receiving data by way of a communications network, comprising:
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a screen size determining means for determining a screen size of image signals input according to control signals;
an encoding means for encoding the image signals according to the determined screen size;
a control means for outputting the control signals which determine the screen size by evaluating a state of the communications network, and transmitting the encoded image signals through the communications network;
a decoding means for decoding the image signals transmitted through the communications network; and
a display means for displaying the decoded image signals. - View Dependent Claims (2, 3, 4, 5)
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6. An apparatus having a lower data-rate for transmitting and receiving data by way of a communications network, comprising:
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a screen size determining means for determining a screen size of image signals input according to control signals;
an encoding means for encoding the image signals according to the determined screen size;
a control means for outputting the control signals which determine the screen size by evaluating a state of the communications network, and transmitting the encoded image signals through the communications network by setting prescribed screen size deciding bits;
a decoding means for perceiving the existence of the setting of the prescribed screen size deciding bits, and magnifying and decoding the image signals, transmitted through the communications network, as the image signals of an initial screen; and
a display means for displaying the decoded image signals. - View Dependent Claims (7, 8)
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9. A method for enabling a lower data-rate, comprising the steps of:
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(a) determining a screen size of image signals input into a communications network;
(b) encoding the image signals according to the determined screen size, and transmitting the encoded image signals to the communications network;
(c) decoding the image signals transmitted through the communications network according to the screen size; and
(d) displaying the decoded image signals;
wherein the screen size is determined to be reduced in size by a prescribed multiple with respect to an initial screen size, if a state of the communications network is not good, and the screen size is determined to be the initial screen size, if the state of the communications network is good, in the step (a) of determining the screen size.
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10. A method for enabling a lower data-rate, comprising the steps of:
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(a) determining a screen size of image signals input into a communications network;
(b) encoding the image signals according to the determined screen size, and transmitting the encoded image signals to the communications network;
(c) decoding the image signals transmitted through the communications network according to the screen size; and
(d) displaying the decoded image signals;
wherein the image signals of the screen reduced in size during encoding in the step (b), are not encoded.
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11. A method for enabling a lower data-rate, comprising the steps of:
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(a) determining a screen size of image signals input into a communications network;
(b) encoding the image signals according to the determined screen size, and transmitting the encoded image signals to the communications network;
(c) decoding the image signals transmitted through the communications network according to the screen size; and
(d) displaying the decoded image signals;
wherein the encoding of the step (b) performs encoding in a black-and-white mode in which only a brightness signal among the image signals is encoded according to the state of the communications network.
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12. A method for enabling a lower data-rate, comprising the steps of:
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(a) determining a screen size of image signals input into a communications network;
(b) encoding the image signals according to the determined screen size, and transmitting the encoded image signals to the communications network;
(c) decoding the image signals transmitted through the communications network according to the screen size; and
(d) displaying the decoded image signals;
wherein the image signals of the screen reduced in size during the decoding of the step (c) are magnified after a prescribed time has passed, and decoded.
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13. A method for enabling a lower data-rate, comprising the steps of:
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(a) determining a screen size of image signals input into a communications network;
(b) encoding the image signals according to the determined screen size, and transmitting the encoded image signals to the communications network by setting prescribed screen size deciding bits;
(c) magnifying and decoding the image signals transmitted through the communications network as the image signals of the initial screen by evaluating the existence of the setting of the prescribed screen size deciding bits; and
(d) displaying the decoded image signals. - View Dependent Claims (14, 15)
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16. A method for enabling a lower data-rate, comprising the steps of:
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(a) determining a screen size of image signals input into a communications network, based on a state of the communications network;
(b) encoding the image signals according to the determined screen size, and transmitting the encoded image signals to the communications network;
(c) decoding the image signals transmitted through the communications network according to the screen size; and
(d) displaying the decoded image signals.
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Specification