Channel selection apparatus
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsKoji Hirose, Ryuichi Sakai
Life of this patent
Estimating the term…
Abstract
A channel selection apparatus for sorting broadcast signals detects parity errors of plural broadcast signals transmitted from the same broadcasting station. The tuned frequency of the broadcast signal is shifted from the frequency of a normal broadcast signal by a predetermined value. As a result, field intensity of the broadcast signal correlates more closely with a parity error rate. The channel selection apparatus thus can sort broadcast signals in the order of fewer error rates and assign them to tuning buttons in the order of easier selecting operation.
Claims8
A method of signal selection, said method comprising the steps of:
- scanning arrange of frequencies;
- identifying in a list a plurality of signals detected within said range of frequencies;
- and
- exchanging one and another of two of said signals which correspond and which are in said list based on said one of said signals after being frequency offset having a lower error rate than said another of said signals after being frequency offset.
Apparatus for signal selection, comprising:
- a scanner for scanning a range of frequencies;
- an error rate detector for detecting error rates of a plurality of signals scanned by said scanner;
- a memory unit in which a list of said plurality of signals is sorted based on respective error rates of said plurality of signals;
- a tuning unit for offsetting frequencies of said plurality of signals;
- and
- a sorter for exchanging one and another of two of said signals in said list based on said one of said signals after being frequency offset having a lower error rate than said another of said signals after being frequency offset.
Dependencies are inferred from the claim text.