Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal
Reexamination Certificate
2003-01-02
2003-11-04
Isen, Forester W. (Department: 2654)
Telephonic communications
Substation or terminal circuitry
For loudspeaking terminal
C379S101010
Reexamination Certificate
active
06643372
ABSTRACT:
INCORPORATION BY REFERENCE: Applicant(s) hereby incorporate herein by reference, any and all U.S. patents, U.S. patent applications, and other documents and printed matter cited or referred to in this application.
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates generally to an apparatus and method for music production by at least two remotely located musicians, and more particularly to a stereo telephone device providing an interactive audio mixing board and expandable bandwidth.
2. Description of Related Art
The following art defines the present state of this field:
Lee, U.S. Pat. No. 4,130,734 describes an analog bandwidth compressor of the present system preserves the actual frequencies of the detected signal. This is accomplished by feeding the detected signal to a bank of contiguous filters and feeding the outputs of each of these filters to an AM detector and a frequency divider. The output from each frequency divider is fed to a tunable filter bank. The outputs of the tunable filter bank are fed to multipliers where the outputs from the associated AM detectors are superimposed on the frequency signals from the tunable filter bank. The output of the plurality of multipliers is fed to a summing network which provides a reduced bandwidth signal. The output of the summing network is subsequently fed through a transmission system to a bandwidth restoration circuit which consists of a tunable contiguous filter bank, AM detector, frequency multiplier, tunable filter bank, multipliers and a summer similar to the bandwidth reduction circuit.
Hoque et al, U.S. Pat. No. 4,922,536 describes in-studio, stage or field applications, high fidelity audio signals are transmitted to a remote processor in digital form in order to solve the problems of audio degradation, cross talk, ground loops and multi-cable problems associated with the analog transmission of multiple channels of audio over long distances. In one embodiment a TDM/FDM multiplexing system is utilized with increased bandwidth and dynamic range compared to data and telephone multiplexing systems to accommodate high fidelity requirements. In an embodiment involving a distributed system, multiple MUX and DEMUX modules are coupled in a distributive fashion along a light-weight transmission line, in which each of the modules is assigned a predetermined transmission frequency and with each of the modules having a number of audio inputs which are time-multiplexed for that particular MUX module and frequency. The Subject System precludes the necessity of running multiple audio cables to remote destinations, while at the same time providing an exceptionally quiet system, since the digital data stream is extremely tolerant to cross talk, ground loops, noise, signal attenuation, and non-linearity associated with conventional analog audio transmission.
Brotz et al, U.S. Pat. No. 5,020,101 describes a musician's telephone interface that interconnects an instant location through a telephone line to a remote location such device having inputs to receive the sound from musical instruments and/or vocalization at each location with balancing circuitry and broadcast means at each location for the musicians at each location to hear the music of one another simultaneously balanced for collaboration and production of music.
Nakano et al, U.S. Pat. No. 5,182,768 describes a digital telephone set connected to a digital data exchange through a transmission line. A plurality of handsets, which are mounted on a telephone body, are for converting input sounds into input analog speech signals and for converting output analog speech signals into output sounds. Connected to the handsets, a plurality of analog-to-digital converters converts the input analog speech signals into input digital speech signals. Connected to the handsets, a plurality of digital-to-analog converters converts output digital speech signals into the output analog speech signals. On the telephone body are mounted a set of dialing keys for producing a numerical signal. Connected to the dialing keys, a control device is for producing input control data in response to the numerical signal and is for producing an output control signal in response to output control data. Connected to the transmission line, the control device, the analog-to-digital converters, and the digital-to-analog converters, a multiplexing/demultiplexing circuit is for transmitting/receiving transmission/reception time division multiplexed signals to/from the digital data exchange through the transmission line. The multiplexing/demultiplexing circuit is for multiplexing the input digital speech signals and the input control data into the transmission time division multiplexed signal and for demultiplexing the reception time division multiplexed signal into the output digital speech signals and the output control data.
Brotz et al, U.S. Pat. No. 5,398,278 describes a telephone interface system to interconnect the output of two or more musicians, one at an instant location and the other at a remote location, over communication lines, such system converting the analog musical output to digital form for duplexing over the communication lines.
Usami, U.S. Pat. No. 5,572,561 teaches a frequency dividing circuit including a first inverter circuit supplied with a first frequency-divided signal, a second inverter circuit supplied with a second frequency-divided signal which has a complementary relationship to the first frequency-divided signal, and a first pair of push-pull circuits. There are also provided a first switch circuit performing a first switching operation in response to a first input signal and selectively supplying output signals of the first and second inverter circuits to the first pair of push-pull circuits so that one of the first pair of push-pull circuits performs a pull-up operation when the other one thereof performs a pull-down operation. Further, there are provided a second pair of push-pull circuits, and a second switch circuit performing a second switching operation in response to a second input signal which has a complementary relationship to the first input signal and selectively supplying output signals of the first pair of push-pull circuits to the second pair of push-pull circuits so that one of the second pair of push-pull circuits performs a pull-up operation when the other one thereof performs a pull-down operation. The first and second frequency-divided signals are output from the second pair of push-pull circuits.
MacDonald, U.S. Pat. No. 5,587,673 teaches a circuit (10) for generating an output signal having a frequency that is a multiple of an input clock signal (CLKIN). The circuit includes a delay circuit (12) having an input port and a plurality of output ports (A, B, C). The input port is coupled during use to the input clock signal. Individual ones of the plurality of output ports output a signal that is delayed with respect to the input clock signal and also with respect to others of the plurality of output ports. The circuit further includes a logic network (20) having a first input for coupling to the input clock signal and a plurality of second inputs for coupling to the plurality of output ports. The logic network operates to logically combine signals emanating from the plurality of output ports with the input clock signal, and has an output port (OUTPUT) for outputting a signal having a frequency that is multiple of a frequency of the input clock signal. The signal that is output from the output port of the logic network has a 50% duty cycle regardless of the duty cycle of the input clock signal.
Marchand, U.S. Pat. No. 5,680,067 teaches a frequency dividing device having an input terminal for a signal to be divided and an output terminal for an output signal. It further comprises: a first mixing circuit which is particularly of the sub-harmonic type, has a first input which forms the input terminal, and a second input for receiving a signal from a local oscillator; a first dividing circuit for dividing the output signal of the first mixing c
Ford Dennis L.
Leggett Michael R.
Leggett-Ford Cindy K.
Gene Scott-Patent Law & Venture Group
Harold Jefferey
Isen Forester W.
LandOfFree
Apparatus and method for music production by at least two... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for music production by at least two..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for music production by at least two... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3120904