Television – Receiver circuitry
Reexamination Certificate
1998-12-29
2001-11-13
Eisenzopf, Reinhard J. (Department: 2614)
Television
Receiver circuitry
C348S731000, C348S732000, C348S554000, C348S555000, C348S556000, C455S191100, C455S191300
Reexamination Certificate
active
06317168
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a digital TV receiver capable of receiving an analog broadcasting signal and a digital broadcasting signal. More particularly, the invention relates to a digital TV receiver which stores channel information with respect to a broadcasting signal which is not currently being viewed, and uses the stored channel information to select a broadcasting channel when a broadcasting signal reception mode is changed, and a method performing the same.
2. Description of the Related Art
A general digital TV receiver having at least two reception modes is capable of receiving an analog broadcasting signal and a digital broadcasting signal. It does not store channel information for a digital broadcasting signal which is currently not being viewed a reception mode where an analog broadcasting signal is selected and viewed, and vice versa. Thus, when a user viewing a program in a certain mode, alters the reception mode in order to view a program of another broadcasting signal, it takes much time to select a channel according to a channel-up/channel-down operation.
SUMMARY OF THE INVENTION
To solve the above problems, it is an object of the present invention to provide a digital TV receiver which stores channel information with respect to a broadcasting signal which is not being currently viewed and immediately performs a channel selection using the stored channel information when a broadcasting signal reception mode is altered, and a method therefor.
To accomplish the above object of the present invention, there is provided a digital TV receiver capable of receiving a digital broadcasting signal and an analog broadcasting signal, the digital TV receiver comprising:
a first input portion for receiving a digital broadcasting signal when a current mode is a digital broadcasting signal reception mode, and receiving the digital broadcasting signal at a predetermined period of time when the current mode is not the digital broadcasting signal reception mode; second input portion for receiving an analog broadcasting signal when the current mode is the analog broadcasting signal reception mode, and receiving the analog broadcasting signal at the predetermined period of time when the current mode is not the analog broadcasting signal reception mode; a switching portion for receiving and outputting a first broadcasting signal from one input portion corresponding to the current mode where one of the digital broadcasting signal and the analog broadcasting signal is received, and receiving and outputting, at the predetermined period of time, a second broadcasting signal from another input portion which is not the broadcasting signal corresponding the current mode; a first signal processor for signal-processing the digital broadcasting signal received from the switching portion to output first channel information; a second signal processor for signal-processing the analog broadcasting signal received from the switching portion to output second channel information; and a controller for receiving and storing channel information for a broadcasting signal which is not received from one of the first signal processor and the second signal processor, at a predetermined period of time, and performing a channel selection based on the stored channel information, when the current mode is switched.
There is also provided a method for performing a channel selection using channel information in a digital TV receiver capable of receiving a digital broadcasting signal and an analog broadcasting signal, the channel selection method comprising the steps of:
(a) discriminating a reception mode with respect to a broadcasting signal which is currently being viewed;
(b) receiving and storing at a predetermined period of time channel information on a broadcasting signal which is not being currently viewed, in response to a discrimination result of the step (a); and (c) performing a channel selection using the channel information stored for a broadcasting signal which is not currently being viewed at the time of switching of a reception mode from the broadcasting signal reception mode which is being currently viewed.
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patent: 5898463 (1999-04-01), Nishiyama
patent: 5900915 (1999-05-01), Morrison
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patent: 6014178 (2000-01-01), Jeon et al.
patent: 6128352 (2000-10-01), Maeda
patent: 6137537 (2000-10-01), Tsuji et al.
patent: 6208388 (2001-03-01), Farleigh
Eisenzopf Reinhard J.
Samsung Electronics Co,. Ltd.
Sughrue Mion Zinn Macpeak & Seas, PLLC
Yenke Brian P.
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