Radio Receiving Set
1 Assignment
0 Petitions
Accused Products
Abstract
The radio receiving set comprises: an antenna selecting section for selecting one of a plurality of antennas which receive analogue television broadcasts; a receiving section for reproducing a composite video signal and a composite synchronizing signal from a reception signal outputted from a selected antenna; a continuity judging unit which generates a correction control signal indicating a correction instruction and another correction control signal not performing a correction instruction; a level detection unit for detecting the level of each composite video signal reproduced by the receiving section; a correction unit which applies a correction processing to each of said level detection signals; and an antenna switchover control unit which performs a comparison among the respective correction detection signals, controls the antenna selecting section to select an antenna corresponding to a maximum correction detection signal.
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Citations
8 Claims
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1-4. -4. (canceled)
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5. A radio receiving set for selecting one of a plurality of antennas to receive an analogue television broadcast, said radio receiving set comprising:
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an antenna selector for selecting one of the plurality of said antennas; a receiver for reproducing a composite video signal and a composite synchronizing signal from a reception signal outputted from a selected antenna; a continuity judging unit which judges whether said composite synchronizing signal is being continuously reproduced at a timely high frequency and which, upon judging that said composite synchronizing signal is not being continuously reproduced at a high frequency, generates a correction control signal indicating a correction instruction, and which, upon judging that said composite synchronizing signal is being continuously reproduced at a high frequency, generates a correction control signal not performing a correction instruction; a level detector for detecting the level of each composite video signal reproduced by said receiver when the plurality of antennas are respectively selected by said antenna selector at predetermined timings, and outputting respective level detection signals; a correction unit which, when a correction control signal indicating a correction instruction has been generated from the continuity judging unit, performs a correction processing to compulsorily change each of said level detection signals into a predetermined level, thereby generating respective correction detection signals free from instability; and antenna switchover controller which performs a comparison among said respective correction detection signals, judges one of the plurality of said antennas corresponding to a maximum correction detection signal, and controls said antenna selector to select a judged antenna. - View Dependent Claims (6)
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7. A radio receiving set including several systems of receivers corresponding to and connected with a plurality of antennas which receive ground digital broadcast, wherein the respective receiving means operate to perform error corrections in packet units and reproduce respective transport streams from reception signals outputted from the respective antennas, said radio receiving set comprising:
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continuity judging unit which, when said transport streams are reproduced in said respective receivers from said respective reception signals, investigates the number of corrections in which error corrections have been performed in packet units and judges whether a predetermined number or more of corrections have continuously occurred at a timely high frequency, upon judging that a predetermined number or more of corrections have continuously occurred at a timely high frequency, generates a correction control signal indicating a correction instruction, upon judging that a predetermined number or more of corrections have not continuously occurred at a timely high frequency, generates a correction control signal not performing a correction instruction; correction unit which, when the correction control signal indicating a correction instruction has been generated from the continuity judging unit, performs a correction processing to compulsorily change data within the packets of the respective transport streams reproduced by the respective receivers into data of a predetermined value, thereby outputting data free from any instability; synthesizing unit which operates in accordance with an error rate detected when error corrections are performed in packet units in respective receivers, to judge a packet capable of obtaining a best reception quality from among the packets of the transport streams outputted from said correction unit, generate and thus output a transport stream consisting of a series of judged packets; and decoding unit for decoding said transport streams outputted from said synthesizing unit. - View Dependent Claims (8)
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Specification