System and method for analyzing and displaying digital signal quality information
First Claim
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1. An apparatus for providing signal quality information for display, comprising:
- a tuner, the tuner receiving and selecting an ATSC digital television signal;
a digital demodulator coupled to the tuner, the digital demodulator demodulating the selected ATSC digital television signal and generating the signal quality information for the selected ATSC digital television signal; and
an RF NTSC modulator, the RF NTSC modulator receiving the signal quality information and generating an RF NTSC modulated signal based on the signal quality information, wherein the RF NTSC modulated signal contains signal quality information.
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Abstract
A method and apparatus for determining and displaying signal quality measurement on a television display screen. The method and apparatus of this invention provides for the display of signal quality measurements, including measurements of signal to noise ratio, bit error rate and channel multi-path distortion in addition to the signal strength. Apparatus and method are described whereby these signal quality measurements may be ascertained and provided either through television overlay or through NTSC radio frequency modulation to particular television channels.
75 Citations
20 Claims
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1. An apparatus for providing signal quality information for display, comprising:
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a tuner, the tuner receiving and selecting an ATSC digital television signal; a digital demodulator coupled to the tuner, the digital demodulator demodulating the selected ATSC digital television signal and generating the signal quality information for the selected ATSC digital television signal; and an RF NTSC modulator, the RF NTSC modulator receiving the signal quality information and generating an RF NTSC modulated signal based on the signal quality information, wherein the RF NTSC modulated signal contains signal quality information. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An apparatus for providing signal quality information for display, comprising:
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a tuner, the tuner receiving and selecting an ATSC digital television signal and generating an intermediate frequency signal; a power measurement unit that receives the intermediate frequency signal from the tuner and generates a signal power measurement of the intermediate frequency signal, wherein the signal power measurement is the signal quality information; and an RF NTSC modulator, the RF NTSC modulator receiving the signal quality information and generating an RF NTSC modulated signal based on the signal quality information, wherein the RF NTSC modulated signal contains signal quality information. - View Dependent Claims (8, 9, 10)
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11. A method for providing representative signal quality information for display, comprising the steps of:
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receiving an ATSC digital television signal; selecting the received ATSC digital television signal; generating signal quality information from the selected ATSC digital television signal; generating a video signal from the signal quality information, the video signal providing a representation of the signal quality information for display; and generating an RF NTSC modulated signal from the video signal. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification