Telephone answering apparatus with call-screening capabilities

• US 4,488,005 A
• Filed: 05/13/1982
• Issued: 12/11/1984
• Est. Priority Date: 05/13/1982
• Status: Expired due to Term

• Current Assignee: Texas Instruments, Inc.
• Original Assignee: Texas Instruments, Inc.
• Inventors: Frantz, Gene A.
• Primary Examiner(s): Brown, Thomas W.
• Application Number:
  US06/377,735
• Time in Patent Office: 943 Days
• Field of Search: 179/18 B, 179/18 D, 179/18 DA, 179/18 FH, 179/5.5, 179/5 P, 179/5 R, 179/84 C, 179/90 BD, 179/90 B, 179/6.13, 179/6.14, 179/6.04, 179/6.05, 179/6.03 , 179/6.08, 179/27 FH, 179/89, 381/43, 381/36, 364/513.5
• US Class Current: 379/88.04
• CPC Class Codes: H04M 1/271 controlled by voice recognition
• CPC Class Codes: H04M 1/652 Means for playing back the recorded messages by remote control over a telephone line H04M1/658 takes precedence
• CPC Class Codes: H04M 1/663 Preventing unauthorised calls to a telephone set

Abstract

An electronic telephone answering apparatus which receives a connection from a remote telephone and reacts according to signals from the remote telephone. In one embodiment of the invention, the answering apparatus suppresses the connection between the remote telephone and the local telephone receiver until a predetermined condition is met by the remote telephone. This predetermined condition may include staying on the line a predetermined amount of time after a message has been communicated to the remote telephone, or communicating a selected key word for connection to the local telephone, such as "emergency". This embodiment allows for the selective connection of emergency or high priority calls when the operator of the local telephone does not wish to be interrupted except for these high priority calls. In another embodiment of the invention, an incoming message is speech recognized and stored in a memory. The recognized speech is matched to a list of key words, which are input by the operator of the local telephone, for selective later retrieval when the operator of the telephone desires. This embodiment allows for the storage of key words by the operator so that at a later time, the operator is able to retrieve selective groups of messages in their operator perceived priority and therefore handle more important messages prior to addressing lower priority messages.

Claims

1. A telephone answering apparatus comprising:

electronic interface means adapted to be operably coupled to a first telephone and subject to being operably coupled to a second telephone remote from the first telephone when the remote telephone is operated so as to place a telephone call to said first telephone, said electronic interface means including

means for sensing an incoming telephone call from the remote telephone to said first telephone and coupling said electronic interface means into an initial incoming connection with the remote telephone but without completing the incoming telephone call to said first telephone even when said first telephone is otherwise occupied with a prior telephone call;

input/output message communication means operably coupled to said first telephone and operable to communicate a selected message to the remote telephone and to receive a message from the remote telephone intended for said first telephone, said input/output message communication means including

memory means storing digital speech data including a plurality of reference templates representative of key codes, and

speech analysis means operably coupled to said memory means and to said electronic interface means for receiving as an input from an incoming telephone call analog speech signals representative of spoken speech, said speech analysis means including comparator means for comparing an input analog speech signal from the remote telephone with the plurality of reference templates stored in said memory means to determine whether a match exists between the input analog speech signal and a particular one of said plurality of reference templates representative of a specific key code;

control means operably coupled to said memory means and said speech analysis means, said control means being responsive to the detection of an incoming telephone call from a remote telephone by said sensing means for activating said input/output message communication means to provide a selected message to the remote telephone; and

said control means being responsive to the output from said comparator means of said speech analysis means for completing the connection of the remote telephone to said first telephone provided that the input analog speech signal is matched to a particular reference template of said memory means representative of a specific key code.

2. A telephone answering apparatus as set forth in claim 1, wherein the input analog speech signal from the remote telephone is stored within said memory means in response to the lack of a match with said specific reference template representative of a key code as determined by said comparator means of said speech analysis means.

3. A telephone answering apparatus as set forth in claim 2, wherein said speech analysis means upon receiving an input from an incoming telephone call as analog speech signals representative of spoken speech applies indicia to respective segments of incoming analog speech signals representative of a plurality of incoming telephone calls from one or more remote telephones in response to the output from said comparator means indicating a match with one of said plurality of reference templates representative of key codes of a non-match, thereby providing a priority message sequence based upon the matching of input analog speech signal sequences with specific ones of said plurality of reference templates stored in said memory means by said comparator means of said speech analysis means.

4. A telephone answering apparatus as set forth in claim 3, further including operator input means operably associated with said control means for presenting operator commands from the operator of said first telephone;

and

said control means being responsive to one of said operator commands as received from said operator input means for accessing analog speech signal sequences from said memory means in order of priority based upon the indicia applied thereto by said speed analysis means, and said analog speech signal sequences representative of different spoken speech messages from one or more remote telephones being converted into audible speech in the established order of priority to be heard by the operator of said first telephone.

5. A telephone answering apparatus as set forth in claim 1, wherein the key codes represented by said plurality of reference templates correspond to specific spoken words by an operator of a remote telephone.

6. A telephone answering apparatus comprising:

electronic interface means adapted to be operably coupled to a first telephone and subject to being operably coupled to a second telephone remote from the first telephone when the remote telephone is operated so as to place a telephone call to said first telephone, said electronic interface means including

means for sensing an incoming telephone call from the remote telephone to said first telephone and coupling said electronic interface means into an initial incoming connection with the remote telephone but without completing the incoming telephone call to said first telephone even when said first telephone is otherwise occupied with a prior telephone call;

input/output message communication means operably coupled to said first telephone and said electronic interface means and operable to communicate a selected message to the remote telephone and to receive a message from the remote telephone intended for said first telephone, said input/output message communication means including

memory means storing digital speech data from which words, phrases, and sentences in synthesized speech may be derived and digital speech data including a plurality of reference templates representative of key codes,

speech synthesizer means operably coupled to said memory means for selectively receiving digital speech data therefrom and generating an analog speech signal from which audible synthesized speech may be provided, and

speech analysis means operably coupled to said memory means and to said electronic interface means for receiving as an input from an incoming telephone call analog speech signals representative of spoken speech, said speech analysis means including comparator means for comparing an input analog speech signal from the remote telephone with the plurality of reference templates stored in said memory means to determine whether a match exists between the input analog speech signal and a particular one of said plurality of reference templates representative of a specific key code;

control means operably coupled to said memory means, said speech synthesizer means, and said speech analysis means, said control means being responsive to the detection of an incoming telephone call from a remote telephone by said sensing means for activating said input/output message communication means by selectively accessing digital speech data from said memory means for input to said speech synthesizer means;

said speech synthesizer means generating an analog speech signal from the selectively accessed digital speech data representative of a selected message to be communicated to the remote telephone and from which audible synthesized speech may be provided;

said control means further being responsive to the occurrence of a predetermined condition based upon the operation of the remote telephone for completing the connection of the remote telephone to said first telephone via said electronic interface means to provide direct communication therebetween; and

said control means being responsive to the output from said comparator means of said speech analysis means for completing the connection of the remote telephone to said first telephone via said electronic interface means provided that the input analog speech signal is matched to a particular reference template of said memory means representative of a specific key code.

7. A telephone answering apparatus as set forth in claim 6, wherein the input analog speech signal from the remote telephone is stored within said memory means in response to the lack of a match with said specific reference template representative of a key code as determined by said comparator means of said speech analysis means.

8. A telephone answering apparatus as set forth in claim 7, wherein said speech analysis means upon receivng an input from an incoming telephone call as analog speech signals representative of spoken speech applies indicia to respective segments of incoming analog speech signals representative of a plurality of incoming telephone calls from one or more remote telephones in response to the output from said comparator means indicating a match with one of said plurality of reference templates representative of key codes or a non-match, thereby providing a priority message sequence based upon the matching of input analog speech signal sequences with specific ones of said plurality of reference templates stored in said memory means by said comparator means of said speech analysis means.

9. A telephone answering apparatus as set forth in claim 8, further including operator input means operably associated with said control means for presenting operator commands from the operator of said first telephone;

and

said control means being responsive to one of said operator commands as received from said operator input means for accessing analog speech signal sequences from said memory means in order of priority based upon the indicia applied thereto by said speech analysis means, and said analog speech signal sequences representative of different spoken speech messages from one or more remote telephones being converted into audible speech in the established order of priority to be heard by the operator of said first telephone.

10. A telephone answering apparatus as set forth in claim 6, wherein the key codes represented by said plurality of reference templates correspond to specific spoken words by an operator of a remote telephone.

11. A telephone answering apparatus as set forth in claim 6, wherein the predetermined condition based upon the operation of the remote telephone involves the continued initial incoming connection between the remote telephone and said electronic interface means for a predetermined time interval.