Receiver with a channel swapping apparatus
First Claim
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1. In a receiver, tuning apparatus responsive to a tuning signal for tuning said receiver to channels selected by a user in response to a tuning signal, comprising:
- channel selection means for generating groups of encoded binary signals corresponding to respective selected channels, said channel selection means including present channel register means for storing the encoded binary signals corresponding to a presently selected channel;
conversion means for converting binary signals stored in said present channel register means into said tuning signal for tuning said receiver to a selected channel;
saved channel register means for storing binary signals corresponding to a previously selected channel;
swap function means for generating a swap signal only when operated by a user;
transfer means for exchanging the contents of said present channel register means and said saved channel register means only in response to said swap signal whereby the contents of said saved channel register are not affected when a new channel is selected.
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Abstract
A television tuning system includes apparatus for swapping or exchanging a presently selected channel for a previously saved channel when a user operates a switch provided for that purpose. The apparatus is arranged so that the saved channel is unaffected by channel selections so that it may be used by a user to quickly return to an originally selected channel after scanning other channels, e.g., during commercial interruptions, as well as to follow the progress of two programs, e.g., two sporting events on different channels.
145 Citations
6 Claims
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1. In a receiver, tuning apparatus responsive to a tuning signal for tuning said receiver to channels selected by a user in response to a tuning signal, comprising:
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channel selection means for generating groups of encoded binary signals corresponding to respective selected channels, said channel selection means including present channel register means for storing the encoded binary signals corresponding to a presently selected channel; conversion means for converting binary signals stored in said present channel register means into said tuning signal for tuning said receiver to a selected channel; saved channel register means for storing binary signals corresponding to a previously selected channel; swap function means for generating a swap signal only when operated by a user; transfer means for exchanging the contents of said present channel register means and said saved channel register means only in response to said swap signal whereby the contents of said saved channel register are not affected when a new channel is selected. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification