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US 4,366,348 AGranted
Method and apparatus for decoding and processing the informational content of multi-frequency signals
OwnerJohn W. Popeinventor
Life of this patent
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OwnerJohn W. Popeinventor
Estimating the term…
An apparatus and method are described for receiving multi-frequency tone signals, such as those which are now being utilized in telephone systems, and for deriving the informational content available from such signals in such a way as to permit storage of that information for subsequent selective retrieval. The multi-frequency signals are received from, for example, a computer operated electronic telecommunication switching system, and, for example, they have originated at the tone-generating keyboard of a telephone. Detection apparatus responsive to the frequency content of the signals produces output signals corresponding to the specific frequencies received, and these output signals are converted into digital signals of corresponding values, which digital signals have a coding form corresponding to the specific form of the digital network involved. A storage device is provided for receiving the digital signals and storing them in a selected location. The stored digital signals may be selectively read by, for example, a telephone subscriber, and the signals so read are displayed on a visual display device or the like.
Apparatus for receiving information bearing multi-frequency pulse signals, for decoding the received signals and for storing information, so decoded, in one of a plurality of storage locations, for selective retrieval, comprising:
A method for receiving information bearing multi-frequency pulse signals, for decoding the received signals and for storing information, so decoded, for selective retrieval, comprising the steps of:
Dependencies are inferred from the claim text.