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7466817 |
Tone generator device for driving light emitting elements
Tone generating sequence data are sequentially read out in accordance with a performance sequence, and tone generation control parameters are decoded from the read-out sequence data. The decoded...
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7181004 |
Direct drive for a subscriber line differential ringing signal having a DC offset
A method of generating a subscriber line differential ringing signal with a DC component includes providing a time-varying supply level, W(t), having a plurality of non-equidistantly spaced...
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7110530 |
System and method for providing universal access to voice response systems
A present invention comprises a device and method for monitoring dial pulse (DP) signals on a line and recognizing a digit pattern comprising at least one digit on the line. In response to the...
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7076460 |
Interactive remote auction bidding system
An interactive remote auction bidding system for conducting an auction utilizes a data input device for communication over a network to the auction site. The system includes a data processor...
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7069243 |
Interactive remote auction bidding system
An interactive remote auction bidding system for conducting an auction utilizes a data input device for communication over a network to the auction site. The system includes a data processor...
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7068777 |
True DTMF dialer
A circular dial buffer is implemented in appropriate random access memory (RAM) accessible by a DSP for the purpose of storing DTMF digits to be generated and output on, e.g., a telephone line. To...
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7023987 |
Method and apparatus for adapting a phone for use in network voice operations
An interface is provided between a conventional telephone and a conventional computer configured for network voice applications including a sound card and modem. The interface allows for use of the...
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7013393 |
Universal intelligent card for secure access to system functions
A method and apparatus for secure access to secured system functions utilizing a universal access card. The card includes a bank of tuned amplifier circuits and tuned audio transducers to maximize...
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6975714 |
Method and apparatus for defeating predictive telemarketing systems by simulating facsimile machines or modems upon answering incoming calls
A method and apparatus that generate a 2100 Hz answer tone, similar to the answer tones sent by facsimile machines and modems, upon answering an incoming call. This causes predictive telemarketing...
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6940974 |
Systems and methods for generating tones for operating telephones
A system for generating number tones for dialing a telephone device comprising a microphone. The system comprises a housing, a first data entry device, first and second memory devices, an output...
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6842517 |
Meter pulse filtering circuit for analog modems
A filtering circuit is described for filtering out meter pulses of analog telephone communication, for example in analog modems. The circuit is mainly composed of resistors and capacitors and is...
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6775364 |
Method and apparatus for selectively sending a false system information tone on a telephone line
A method and apparatus for selectively sending a false system information tone (SIT) in response to an incoming telephone call is provided. One embodiment of the apparatus includes a telephone line...
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6671369 |
Method and apparatus for returning a false special information tone for an incoming telephone call
A method and apparatus ( 10 ) for returning a false signal substantially similar to at least a first portion of a special information tone (SIT) after a device receiving an incoming telephone call...
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6671315 |
DTMF signal generator
A DTMF signal generator simplifies frequency characteristic design of a telephone line interface so as to make it easy to carry out alteration of a low tone group frequency component and a high...
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6668057 |
Apparatus for receiving tone signal, apparatus for transmitting tone signal, and apparatus for transmitting or receiving tone signal
An arithmetic processing section is designed to repeatedly execute product-sum arithmetic processing a number of times equal to the number of samples corresponding to each of the frequencies, in...
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RE38101 |
Methods and apparatus for performing speaker independent recognition of commands in parallel with speaker dependent recognition of names, words or phrases
Methods and apparatus for activating telephone services in response to speech are described. A directory including names is maintained for each customer. A speaker dependent speech template and a...
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6519338 |
Tone burst generator and its application to telephony
A differential pair of a first and a second transistor is used in a tone burst generator circuit for generating tone bursts for periodic pulse metering. The first transistor carries all of the...
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6498847 |
Dialer programming and device with integrated printing process
An improved account access system and device in which a portable electronic card may be loaded into a combined programming and printing system to be programmed with predetermined signals and...
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6477390 |
Apparatus and method for intuitive audio keypad navigation for a wireless communication device
A wireless communication device ( 101 ) having intuitive audio keypad navigation features is provided. Each of the keys ( 140-151 ) of a keypad ( 132 ) of the wireless communication device ( 101 )...
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6445790 |
Digital tone generator
A digital tone generator ( 1110 ) includes a digital signal generator ( 1138 ) which generates a digital waveform data sequence which is representative of a tone having a predetermined waveform,...
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6373941 |
Tone generator for electronic exchange
A tone supplying device generates various tone signals which an exchange can provide for public subscribers. Address signals generated by a counting operation of a first counter are inputted to a...
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6366669 |
System and method for providing universal access to interactive voice response systems
A system and method for allowing callers using DP telephones to access IVR systems, including monitoring DP signals until a dialed digit is recognized, where the DP signals are generated by a...
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6243460 |
Telephone with character keypad
A telephone that has dual keypads, wherein one of the keypads is a standard 12 number (1-9, 0, #, and *) keypad and the other keypad comprises a plurality of keys having a single character on each...
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6236724 |
Methods and apparatus for encoding and decoding data transmitted over telephone lines
A method of generation and detection of acoustic signals carrying alpha-numeric data for reducing the effects of noise and thereby improving signal transmission without the need to boost the power...
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6137878 |
Method for outputting user feedback audio messages and telecommunications equipment employing said method
Speech messages as user feedback audio signals in electrical/electronic apparatus are more informative to users and better at holding their attention. However, in telecommunications equipment...
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6101252 |
CAS tone disguising method and apparatus
The ADSI system 100 has a file stored in RAM 202 or ROM 204. The file plays a CAS tone. The CAS tone is disguised by playing one or more introductory tones as frequencies lower than the CAS tone....
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6049712 |
Arrangement system and method relating to telecommunications access and control
An arrangement relating to telecommunication access and control. An arrangement is provided at least for providing access information for protected subscriptions to at least one telecommunications...
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6014441 |
Method and system for generation of tone signals over a transmission channel
A user-authentication system includes an authorized user device (AUD) for transmission of dtmf tones to a user-verification system (UVS) over a telephone network, where user-verification is...
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RE36443 |
Dialer with internal option select circuit programmed with externally hardwired address
An option select circuit for a dialer includes an internal address generator (20) for generating an address pattern, which, in a set up mode, is output from a multiplexer (14) to I/O pins (10). The...
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5949874 |
Method and system for compensating for signal deviations in tone signals over a transmission channel
A user-authentication system includes an authorized user device (AUD) for transmission of DTMF tones to a user-verification system (UVS) over a telephone network, where user-verification is...
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5920623 |
Method and apparatus for defeating a predictive telemarketing system
A method and apparatus for defeating a predictive dialing telemarketing system includes a signal generator in the nature of an oscillator (18) that is capable of creating a 914 Hz sine wave that...
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5907597 |
Method and system for the secure communication of data
A user-authentication system includes an authorized user device (AUD) for transmission of dtmf tones to a user-verification system (UVS) over a telephone network, where user-verification is...
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5889853 |
Adjustable-period dual-tone multifrequency generator
An adjustable-period dual-tone multifrequency (DTMF) generator, which includes a plurality of programmable counters or up/down counters, a control unit, a memory unit for storing data, a digital...
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5878131 |
Interference attenuation for acoustic-dialers
Acoustic dialers are widely used to dial telephone numbers by generating a pair of DTMF tones for each key being depressed. Non-linearities in telephone systems, acoustic dialer loudspeakers, and...
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5859905 |
Cycle-modulating type of dual-tone multifrequency generator
A cycle-modulating DTMF generator for generating a DTMF signal; the generator comprises a programmable time-pulse generator, counters or up/down counters, a memory unit for storing data, a digital...
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5825871 |
Information storage device for storing personal identification information
An information storage device for storing and outputting personal identification information. The storage device includes memory and a controller. The memory stores personal identification...
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5781626 |
Communication device capable of controlling transmission parameters of outputted DTMF signals
A communication device, such as a telephone or a facsimile device, includes an input device for inputting code information for a call to be transmitted through a communication network, a...
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5781625 |
System and apparatus for generating within the premises a dial tone for enhanced phone services
A system and apparatus includes a premises phone connected to a phone network along a first communication channel. A dial tone controller generates within the premises a dial tone along a second...
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5745555 |
System and method using personal identification numbers and associated prompts for controlling unauthorized use of a security device and unauthorized access to a resource
A system and method using personal identification numbers and associated prompts for controlling unauthorized use of a security device and unauthorized access to a resource. The method includes...
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5719921 |
Methods and apparatus for activating telephone services in response to speech
Methods and apparatus for activating telephone services in response to speech are described. A directory including names is maintained for each customer. A speaker dependent speech template and a...
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5706341 |
Active digit cancelling parallel dialer
A method of dialing digits using dual tone multifrequency (DTMF) signals comprised of generating a digit from a DTMF generator comprised of a first pair of signals forming a DTMF signal, one signal...
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5706340 |
Telephone apparatus including circuit for producing dial data from serial key data
A serial data generating circuit and a key input signal generating circuit are provided at a panel substrate side, and input key data are transmitted in series to a main substrate side of a...
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5636270 |
Method of producing signals commonly used with telephones
This invention describes a universal method of producing a plurality of analog telephone signal types, commonly used repeatedly, with telephone peripheral, terminal and central office equipment,...
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5583934 |
DC level control for an electronic telephone line card
DC level control for an electronic telephone line card which filters the DC component from the input audio signal, determines the gain setting of the transmit path, develops a DC adjust voltage...
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5583933 |
Method and apparatus for the secure communication of data
An auto-dialer suitable for use as a smart card capable of being acoustically coupled to a telephone and being reprogrammed in response to acoustic signals. The programming and other features of...
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5541989 |
Method and apparatus for detecting added keyboard functions
A method and apparatus for detecting the added functions of a telephone dialer by adding diodes to the IC circuit and using as part of the input pins such that the need for total number of input...
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5539805 |
Power supply system including ringing voltage reset under low input voltage conditions
A voltage detection circuit, in conjunction with a power supply system for ringing voltage generation in a remote telecommunications unit, monitors the operating voltage level of the remote unit...
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5490214 |
Method and apparatus for selectively generating control signals in a telephone system
An improvement to a telephone system (10) having a first signal generator (21) which outputs a control signal only when it receives a certain request signal generated by the telephone system's...
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5369697 |
Method and apparatus for automatically switching between pulse code and DTMF signals generated by a telephone
Dual tone multifrequency (DTMF) signals are automatically generated by a telecommunications device after a telephone number is called. The signals generated to call the telephone number are...
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5363443 |
Differing frequency sine wave generation from a look-up table
Sine waves are generated by a port circuit processor of a telephone switching office by accessing a look-up table stored in a memory associated with the port circuit processor. Entries in the...
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