US5483579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voice recognition dialing system
Assignee: Digital Acoustics Inc
•
Filing: 1993-02-25
•
Granted: 1996-01-09
•
Expires: 2013-02-25
Abstract
Abstract A telephone line may be provided with an automated voice recognition dialer system. A voice recognition telephone dialing system can be constructed with a dial tone elimination circuit connected to the telephone line. The utilization of a dial tone elimination circuit will eliminate the "noise" of a dial tone from consideration by a speech processing circuit which may be set up to analyze voice commands and generate appropriate responses such as dial tone generation or synthesized speech responses. In this manner, a single voice dialer may be utilized regardless of the number of telephones on a line.
Inventors
- 👤 Scott S. Stogel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:46
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/26; H04M1/27; H04M1/271
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
81 words
A method for effecting telephone dial signaling, comprising the steps of: verifying that a telephone line is in a dial-ready state; inputting a voice instruction over a dial tone signal onto a telephone line; rejecting the influence of a dial tone signal from reaching a voice recognizer while passing at least a portion of said voice instruction to said voice recognizer; recognizing said portion of said voice instruction; and generating a prestored dialing sequence corresponding to said voice instruction upon recognition.
Claim 2
Independent Claim
81 words
A method for effecting telephone dial signaling, comprising the steps of: verifying that a telephone line is in a dial-ready state; inputting a voice instruction over a dial tone signal onto a telephone line; rejecting the influence of a dial tone signal from reaching a voice recognizer while passing at least a portion of said voice instruction to said voice recognizer; recognizing said portion of said voice instruction; and generating a prestored dialing sequence corresponding to said voice instruction upon recognition.
Claim 3
Dependent Claim
24 words
A method according to claim 1, wherein said step of verifying further comprises the step of determining the hook status of said telephone line.
Claim 4
Dependent Claim
27 words
A method according to claim 1, wherein said step of rejecting is performed by filtering at least one signal frequency corresponding to a dial tone signal frequency.
Claim 5
Dependent Claim
80 words
A voice recognition telephone dialing system that does not require manual activation, comprising: a dial tone removal circuit, coupled to a telephone line and active at least when the telephone line is in a dial ready state, to remove signal components in a predetermined frequency range; a voice recognition unit with an input connected to an output of said dial tone removal circuit; and a dialing signal generator responsive to said voice recognition unit and coupled to said telephone line.
Claim 6
Dependent Claim
80 words
A voice recognition telephone dialing system that does not require manual activation, comprising: a dial tone removal circuit, coupled to a telephone line and active at least when the telephone line is in a dial ready state, to remove signal components in a predetermined frequency range; a voice recognition unit with an input connected to an output of said dial tone removal circuit; and a dialing signal generator responsive to said voice recognition unit and coupled to said telephone line.
Claim 7
Dependent Claim
19 words
A voice recognition telephone dialing system according to claim 4, wherein said dialing signal generator is a tone generator.
Claim 8
Dependent Claim
19 words
A voice recognition telephone dialing system according to claim 4, wherein said dialing signal generator is a pulse generator.
Claim 9
Dependent Claim
19 words
A voice recognition telephone dialing system according to claim 4, wherein said dial tone removal circuit is a filter.
Claim 10
Dependent Claim
20 words
A voice recognition telephone dialing system according to claim 4, wherein said dial tone removal circuit is a blocking circuit.
Claim 11
Dependent Claim
18 words
A voice recognition telephone dialing system according to claim 7, wherein said filter is a band reject filter.
Claim 12
Dependent Claim
17 words
A voice recognition telephone dialing system according to claim 7, wherein said filter is a notch filter.
Claim 13
Dependent Claim
19 words
A voice recognition telephone dialing system according to claim 7, wherein said filter is a digital signal processing filter.
Claim 14
Dependent Claim
19 words
A voice recognition telephone dialing system according to claim 7, wherein said filter is a digital signal processing mask.
Claim 15
Dependent Claim
18 words
A voice recognition telephone dialing system according to claim 7, wherein said filter comprises a plurality of filters.
Claim 16
Dependent Claim
21 words
A voice recognition telephone dialing system according to claim 4, wherein said dial tone removal circuit is a phase cancellation circuit.
Claim 17
Dependent Claim
64 words
A voice recognition telephone dialing system, comprising: means for recognizing a voice instruction and generating a predetermined dialing sequence corresponding to a recognized instruction; and means, connected to an input of said means for recognizing, for blocking signals in a predetermined frequency range including at least a dial tone signal, and passing other signals outside said predetermined frequency range to said means for recognizing.
Claim 18
Dependent Claim
64 words
A voice recognition telephone dialing system, comprising: means for recognizing a voice instruction and generating a predetermined dialing sequence corresponding to a recognized instruction; and means, connected to an input of said means for recognizing, for blocking signals in a predetermined frequency range including at least a dial tone signal, and passing other signals outside said predetermined frequency range to said means for recognizing.
Claim 19
Dependent Claim
72 words
A voice recognition telephone dialing system according to claim 15, further comprising: means, connected to a telephone line, for detecting status of said telephone line; means for generating a telephone dialing signal in response to said dialing sequence; and a means for controlling connected to said means for recognizing a voice instruction and generating a predetermined dialing sequence corresponding to a recognized instruction, said means for detecting and said means for generating.
Claim 20
Dependent Claim
30 words
A voice recognition telephone dialing system according to claim 4 wherein said dial tone removal circuit is implemented by a digital signal processing routine integrated with said voice recognition unit.
Claim 21
Independent Claim
96 words
A method for dialing a telephone, comprising the steps of: verifying that a telephone line is in a dial-ready state; adding a voice instruction signal to a dial tone signal on a telephone line wherein the sum of said voice instruction signal and said dial tone signal is a combined signal; subtracting at least the dial tone signal from the combined signal and passing the remainder of the voice instruction signal to a voice recognizer; recognizing the remainder of the voice instruction signal; and generating a prestored dialing sequence corresponding to said voice instruction upon recognition.
Claim 22
Independent Claim
96 words
A method for dialing a telephone, comprising the steps of: verifying that a telephone line is in a dial-ready state; adding a voice instruction signal to a dial tone signal on a telephone line wherein the sum of said voice instruction signal and said dial tone signal is a combined signal; subtracting at least the dial tone signal from the combined signal and passing the remainder of the voice instruction signal to a voice recognizer; recognizing the remainder of the voice instruction signal; and generating a prestored dialing sequence corresponding to said voice instruction upon recognition.
References Cited (Backward Citations)
US4027102A
Cited
US4677569A
Cited
JPS58197947A
Cited
US4578540A
Cited
US4704696A
Cited
US4521647A
Cited
US4653086A
Cited
US4837808A
Cited
US4644107A
Cited
US4776016A
Cited
US4853953A
Cited
US5050215A
Cited
US4870686A
Cited
US4928302A
Cited
JPH0256600A
Cited
US5007081A
Cited
US5054054A
Cited
US5111501A
Cited
US5046099A
Cited
US5036539A
Cited
US5148484A
Cited
US5319703A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-01-08 | 1999-07-10 | 2000-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-01-08 | 2003-07-10 | 2004-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-01-08 | 2007-07-10 | 2008-01-09 | $7700.00 | Window Closed / Lapsed |