|
Match
|
Document |
Document Title |
|
|
3875339 |
VARIABLE BANDWIDTH VOICE AND DATA TELEPHONE COMMUNICATION SYSTEM
A switching network preferably for use with a private branch exchange telephone system which switching network facilitates the simultaneous transmission of a plurality of voice and/or data grade...
|
|
|
3873777 |
Signal transmission system for transmitting a plurality of series of signals
In a time division multiplexing transmission system for transmitting a plurality of interrupted signals such as picture signals and pulse modulated signals corresponding to a continuous signal such...
|
|
|
3851106 |
METHOD FOR INCREASING IN A SIGNAL WITH A GIVEN BAND WIDTH THE AMOUNT OF INFORMATION TRANSFERRED PER TIME UNIT
The invention relates to a method for reducing the redundancy in a signal information by replacing the redundant information with a code which indicates that such information has appeared and shall...
|
|
|
3824597 |
DATA TRANSMISSION NETWORK
Disclosed is a transcontinental communications network particularly designed for the very rapid transmission of digital data between subscribers throughout major areas of the United States. The...
|
|
|
3811014 |
ADAPTIVE PULSE CODE MODULATION SYSTEM
An adaptive pulse code modulation system useful for increasing the channel capacity of a fixed bandwidth communication link by reducing the redundancy characteristic of nonadaptive systems. In the...
|
|
|
3769452 |
NARROW BAND TELEVISION SYSTEM
Picture elements in a fast-scanned, or broad-bandwidth video signal are selected pseudo-randomly, and signals representative of their amplitude are transmitted over a narrow band channel to a...
|
|
|
3764792 |
METHOD AND APPARATUS FOR ADDING TWO DELTA CODED SIGNALS
A method of adding two delta coded signals having the same binary bit rate. Whenever corresponding bits of two delta coded signals are to be added and both have the same binary value, a bit of this...
|
|
|
3754101 |
FREQUENCY RATE COMMUNICATION SYSTEM
A communication system for transmitting a plurality of analog or digital information signals to a receiver with an improvement in band width utilization over conventional systems. A system with a...
|
|
|
3737584 |
MALFUNCTION MONITORING EQUIPMENT FOR A TIME DIVISION MULTIPLEXED TRANSMISSION SYSTEM
A malfunction monitoring system for the analog circuit of a time division multiplexed pulse code modulation system uses a noise signal as the pilot signal.
|
|
|
3736373 |
CONDITIONAL VERTICAL SUBSAMPLING IN A VIDEO REDUNDANCY REDUCTION SYSTEM
Alternate fields of a two-field interlaced video signal are transmitted without encoding from a transmitting encoder to a receiving location. In the encoder, a predicted value for each picture...
|
|
|
3718768 |
VOICE OR ANALOG COMMUNICATION SYSTEM EMPLOYING ADAPTIVE ENCODING TECHNIQUES
Voice and other analog information are transmitted from one to another of a plurality of stations in a communications system wherein, at the sending stations, an encoder samples the voice or other...
|
|
|
3711650 |
ADAPTIVE PULSE CODE MODULATION SYSTEM
An adaptive pulse code modulation system useful for increasing the channel capacity of a fixed bandwidth communication link. Channel capacity is increased by reducing the redundancy normally...
|
|
|
3707680 |
DIGITAL DIFFERENTIAL PULSE CODE MODULATION SYSTEM
Apparatus and method are disclosed for a differential pulse code modulated system. The system transmits the difference between a given sample of the input signal and an estimated value of the given...
|
|
|
3697682 |
VIDEO SIGNAL PROCESSING
A television picture is scanned such that each frame of the resultant video signal comprises a succession of N interlaced fields. Each field is then delayed by a time equal to the field scan time...
|
|
|
3689698 |
MULTIPLEXING SYSTEM
Successive frames of a binary bit stream which is a multiplexed series of binary words derived from the amplitude levels of a large number of voice channels each may be represented by a series of...
|
|
|
3689697 |
SYNCHRONIZING SYSTEM
In a time-division multiplex, pulse-code modulation system, each sequence of four binary pulses representing information are converted to a group of three ternary pulses for transmission to a...
|
|
|
3665316 |
MAXIMUM CHANNEL UTILIZATION USING SINGLE ENDED AMPLIFIERS IN A FREQUENCY BAND GREATER THAN ONE OCTAVE
A CATV system is disclosed in which the channels are assigned so that all second order distortion components fall within a sideband in a TV channel, such that the resulting interference is not...
|
|
|
3659052 |
MULTIPLEX TERMINAL WITH REDUNDANCY REDUCTION
A terminal system for interconnecting a plurality of user channels and a transmission channel of limited bandwidth for transmission of telephone voice signals and the like including an input...
|
|
|
3627945 |
TRANSMISSION OF ASYNCHRONOUS TELEGRAPHIC SIGNALS
In transmitting telegraphic signals, binary asynchronous signals are scanned at regular intervals and combined to form scanning groups, each of which is converted to a code word. The data contained...
|
|
|
3609244 |
CONDITIONAL REPLENISHMENT VIDEO SYSTEM WITH VARIABLE LENGTH ADDRESS CODE
The amplitude of a sample from a signal having frame-to-frame redundancy is transmitted only if the amplitude differs significantly from the amplitude of a corresponding sample having the same time...
|
|
|
3569834 |
DELTA-MODULATED TRANSMISSION SYSTEM WITH PREDICTION OF VOICE DEVELOPMENT AND TRANSMISSION OF ONLY COORDINATION AND ERROR SIGNALS
The invention concerns a method for reducing the bandwidth in a delta-modulated transmission system which consists in setting up a prediction table of future pulses, base upon the last pulses of...
|
|
|
3548107 |
SIGNAL PROCESSING APPARATUS FOR MULTIPLEX TRANSMISSION
|
|
|
3482048 |
COMMUNICATION SYSTEM FOR TRANSMISSION OF HIGH SPEED CODE VIA LOW SPEED CHANNELS
|
|
|
3456195 |
RECEIVER FOR RECEIVING NONORTHOGONAL MULTIPLEXED SIGNALS
|
|
|
3310631 |
Communication system for the selective transmission of speech and data
|
|
|
3256389 |
Signal processing system and method
|
|
|
3226485 |
Distortion compensation at wide-band transmission over a number of equal narrow-band channels
|
|
|
3159720 |
Telecommunication system
|
|
|
3026375 |
Transmission of quantized signals
|
|
|
3007042 |
Communication system
|
|
|
2971059 |
Automatic frequency control arrangements for frequency shift telegraph receivers
|
|
|
2944113 |
System for broad-band recording
|
|
|
2927966 |
Carrier telephone systems with carrier-shift signaling
|
|
|
2923773 |
Electronic system for handling information
|
|
|
2920141 |
Diagonal coded quantizing signal transmission
|
|
|
2897275 |
Delta modulation compander
|
|
|
2875436 |
Television relay system
|
|
|
2870260 |
Speech interpolation communication system
|
|
|
2860186 |
Television transmission channel sharing system
|
|
|
2852608 |
Signal transmission system
|
|
|
3838444 |
Title is not available
|