METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING DATA
First Claim
1. A data transmitting method comprising:
- determining whether a first image signal is a wide color gamut signal;
detecting a teletext interval from lines of the first image signal if it is determined that the first image signal is the wide color gamut signal;
encoding color gamut information based on the wide color gamut signal, and allocating the encoded color gamut information to a data region of the teletext interval; and
transmitting an second image signal including a teletext packet in which the encoded color gamut information is allocated.
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Accused Products
Abstract
A data transmitting/receiving apparatus and method in which color gamut information is added to a teletext signal in a blanking interval so that a display device can recognize whether a color gamut has been extended, are provided. The apparatus includes a control unit which determines whether an image signal is a wide color gamut signal. A signal processing unit encodes color gamut information of the wide color gamut signal and allocates the color gamut information to a data region of a teletext interval if it is determined that the image signal is the wide color gamut signal. The signal processing unit transmits an image signal including a teletext packet in which the color gamut information is recorded.
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Citations
17 Claims
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1. A data transmitting method comprising:
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determining whether a first image signal is a wide color gamut signal; detecting a teletext interval from lines of the first image signal if it is determined that the first image signal is the wide color gamut signal; encoding color gamut information based on the wide color gamut signal, and allocating the encoded color gamut information to a data region of the teletext interval; and transmitting an second image signal including a teletext packet in which the encoded color gamut information is allocated. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A data transmitting method comprising:
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determining whether a first image signal is a wide color gamut signal; detecting a blanking interval from lines of the first image signal if it is determined that the first image signal is the wide color gamut signal; encoding color gamut information based on the wide color gamut signal and allocating the encoded color gamut information to a data region of the blanking interval; and transmitting an image signal including a packet in which the encoded color gamut information is allocated. - View Dependent Claims (9)
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10. A data receiving method comprising:
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receiving an image signal including a teletext signal in a blanking interval to which coded color gamut information is added; detecting the blanking interval from the received image signal to extract the teletext signal from the image signal; extracting data from the teletext signal; decoding the coded color gamut information from the extracted data; and controlling a color gamut of a display device according to the decoded color gamut information. - View Dependent Claims (11, 12)
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13. A data transmitting/receiving method comprising:
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encoding color gamut information if it is determined that an image signal is a wide color gamut signal, allocating the encoded color gamut information to a teletext data region, and transmitting an image signal including a teletext packet in which the encoded color gamut information is allocated; and detecting a blanking interval from the transmitted image signal to extract teletext data from the transmitted image signal, decoding color gamut information from the extracted teletext data, and controlling a color gamut of a display device according to a coordinate value of a color channel of a color gamut indicated by the color gamut information.
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14. A data transmitting device comprising:
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an image signal input unit which receives a first image signal. a control unit which checks the first image signal received by the image signal input unit to determine whether the received input image signal is a wide color gamut signal; and a signal processing unit which encodes and allocates color gamut information to a teletext data region if the control unit determines that the image signal is a wide color gamut signal, and transmits a second image signal including a teletext interval in which the color gamut information is encoded. - View Dependent Claims (15)
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16. A data receiving device which decodes wide color gamut information from a teletext signal received from a data transmitting device to which the color gamut information is added, the data receiving device comprising:
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a decoder unit which detects a teletext interval included in a received image signal and decodes color gamut information from a data region of the teletext interval; a control unit which detects color gamut type information from the color gamut information from the data region of the teletext interval detected by the decoder unit; and a signal processing unit which performs wide color gamut mapping using a primary coordinate value of a color channel included in the color gamut information decoded by the decoder unit, according to the color gamut type information detected by the control unit. - View Dependent Claims (17)
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Specification