Mobile television receiver
First Claim
Patent Images
1. A mobile receiving device for receiving video/audio high frequency signals, the mobile receiving device comprising:
- at least two channel selection devices for converting the video/audio high-frequency signals into intermediate frequency signals;
at least two video demodulation devices to convert the intermediate frequency signals into video signals;
at least two audio demodulation devices to convert the intermediate frequency signals into audio signals;
an intermediate frequency switching device that selectively connects the at least one of the audio demodulation devices or at least one of the video demodulation devices to a selected one of the channel selection devices in response to a control signal; and
a video correlation device that receives the video signals and provides a correlated video output signal.
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Abstract
The receiving device contains at least two television channel selection devices to convert high-frequency signals into intermediate-frequency signals, at least two video demodulation devices to convert the intermediate-frequency signals into picture signals, at least two audio demodulation devices to convert the intermediate-frequency signals into audio signals, and one intermediate-frequency switching device to switch the audio- and video-demodulation devices to the television channel selection devices.
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Citations
12 Claims
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1. A mobile receiving device for receiving video/audio high frequency signals, the mobile receiving device comprising:
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at least two channel selection devices for converting the video/audio high-frequency signals into intermediate frequency signals; at least two video demodulation devices to convert the intermediate frequency signals into video signals; at least two audio demodulation devices to convert the intermediate frequency signals into audio signals; an intermediate frequency switching device that selectively connects the at least one of the audio demodulation devices or at least one of the video demodulation devices to a selected one of the channel selection devices in response to a control signal; and a video correlation device that receives the video signals and provides a correlated video output signal. - View Dependent Claims (2, 3, 7, 8)
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4. A mobile receiving device for receiving video/audio high frequency signals, the mobile receiving device comprising:
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at least two channel selection devices for converting the video/audio high-frequency signals into intermediate frequency signals; at least two video demodulation devices to convert the intermediate frequency signals into video signals; at least two audio demodulation devices to convert the intermediate frequency signals into audio signals; and an intermediate frequency switching device that selectively connects the at least one of the audio demodulation devices or at least one of the video demodulation devices to a selected one of the channel selection devices in response to a control signal; and where at least one of the audio demodulation devices comprises a phase control circuit and at least one filter concurrent with the phase control circuit, for selection and mirror frequency suppression.
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5. A mobile receiving device for receiving video/audio high frequency signals, the mobile receiving device comprising:
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at least two channel selection devices for converting the video/audio high-frequency signals into intermediate frequency signals; at least two video demodulation devices to convert the intermediate frequency signals into video signals; at least two audio demodulation devices to convert the intermediate frequency signals into audio signals; an intermediate frequency switching device that selectively connects the at least one of the audio demodulation devices or at least one of the video demodulation devices to a selected one of the channel selection devices in response to a control signal; and where the at least one audio demodulation device comprises a field strength detector that provides a field strength signal. - View Dependent Claims (6, 9)
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10. A television receiving device for use in a motor vehicle, the receiving device comprising:
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at least two television channel selection devices for converting received high-frequency signals into intermediate frequency signals; at least two video demodulation devices to convert the intermediate frequency signals into video signals; at least two audio demodulation devices to convert the intermediate frequency signals into audio signals, where each of the audio demodulation devices includes an associated field strength detector and provides a field strength signal indicative thereof; a first switching device that receives the intermediate frequency signals and routes each of the intermediate frequency signals to an associated one of the video demodulation devices and an associated one of the audio demodulation devices; and an evaluation device that receives the field strength signals and provides a control signal to control switching of the switching device.
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11. A television receiving device for use in a motor vehicle, the receiving device comprising:
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at least two television channel selection devices for converting received high-frequency signals into intermediate frequency signals; at least two video demodulation devices to convert the intermediate frequency signals into video signals; at least two audio demodulation devices to convert the intermediate frequency signals into audio signals, where each of the audio demodulation devices includes an associated field strength detector and provides a field strength signal indicative thereof; a first switching device that receives the intermediate frequency signals and routes each of the intermediate frequency signals to an associated one of the video demodulation devices and an associated one of the audio demodulation devices; a plurality of antennae that each receive high frequency signals and provide an associated received high frequency signal; and a second switching device that selectively routes each of the received high frequency signals to a uniquely associated one of the at least two television channel selective devices. - View Dependent Claims (12)
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Specification