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4460890 |
Direct digital to digital sampling rate conversion, method and apparatus
A direct digital-to-digital rate conversion apparatus and method for converting an input signal at a first sampling rate to an output signal at a second sampling rate, said apparatus has a rate...
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4451819 |
Method and apparatus for decoding binary data
An apparatus for decoding binary data from one form to another has a register adapted to receive the input bit signals. A plurality of data paths are connected to the register, with a delay means...
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4397017 |
Stuff synchronization device with reduced sampling jitter
It has now been confirmed as regards a stuff (justification) synchronization device for each of plesiochronous input pulse sequence to be time division multiplexed that a low frequency jitter...
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4394774 |
Digital video compression system and methods utilizing scene adaptive coding with rate buffer feedback
A digital video compression and expansion system and its methods for compressing and expanding digitalized video signals in real time at rates up to NTSC color broadcast rates are disclosed. The...
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4394641 |
Method and device for coding binary data and a device decoding coded data
A method and a device for coding binary data to be transmitted and a device for decoding coded data dispense with the need to transmit a direct-current component and make it possible to...
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4360840 |
Real time data compression/decompression scheme for facsimile transmission system
A graphic image represented by a two-level pel-to-pel definition is compressed by one-dimensional redundancy reduction coding using an entropy preserving algorithm which allows for real time...
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4229815 |
Full duplex bit synchronous data rate buffer
The disclosed full duplex bit synchronous data rate buffer (15) adapts high speed burst data signals for transmission over low speed data facilities. The data rate buffer (15) includes a buffer...
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4209771 |
Code converting method and system
A code converting method in which a multivalue signal x i sampled at a sampling period of mT, where m (an even number) equals 2 n (n being integer) and x i is non-negative integer not greater...
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4184150 |
Circuit arrangement for halving the sampling rate of a delta modulation signal
This circuit arrangement, which is connected to a delta modulation encoder operating with a sampling rate F and producing a first delta modulation signal, comprises means for producing the two bits...
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4109110 |
Digital-to-analog converter
The sample rate of the digital input is increased to a point where by reducing the number of bits per sample the final digital-to-analog conversion can be accomplished in a rate multiplier.
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4087754 |
Digital-to-analog converter for a communication system
In an encoder portion, a communication system converts analog signals, into linear delta modulated (hereafter LDM) signals and LDM signals into compressed pulse code modulated (hereafter CPCM)...
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4079371 |
Rate converter for digital signals having a negative feedback phase lock loop
An arrangement responsive to input digital signals for producing output digital signals at a higher rate together with stuffing pulses comprises a first frequency divider responsive to input clock...
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4044306 |
Digital converter from pulse code modulation to continuous variable slope delta modulation
A digital converter for digitally converting a coded signal being at a PCM rate into another coded signal flowing at a delta rate. First, the code of the PCM signal is converted into an...
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4035724 |
Digital converter from continuous variable slope delta modulation to pulse code modulation
The invention relates to a digital converter and to a method for digitally converting a coded signal being at a delta rate into another coded signal flowing at a PCM rate. First, the code of the...
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4020332 |
Interpolation-decimation circuit for increasing or decreasing digital sampling frequency
A general purpose interpolator-decimator circuit for increasing or decreasing the sampling rate of a digital signal by a factor L/M, where L and M are integers, is disclosed. The circuit includes...
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4017688 |
Method and devices for inserting additional pattern in, or removing same from, a message
A method and a device for modifying a stream of information elements, particularly with a view to compensating for variations of the speed at which such elements are transmitted over the successive...
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3766542 |
CODE CONVERSION APPARATUS
Disclosed herein is a code conversion system for converting, in the digital phase, a prediction type first code to a lower frequency, prediction type second code approximating the information...
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3715574 |
INTERFACE CONVERTER FOR FEEDING HIGH FREQUENCY SIGNALS INTO LOW FREQUENCY CIRCUITS
Apparatus for conversion of high speed binary to binary coded decimal with ow speed circuitry. An information incoming pulse is digitized at the high frequency rate and this digital equivalent is...
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3696402 |
DIGITAL FREQUENCY DIVIDER
Digital pulse rates are divided by storing sequential bit groups, each of which has a number of bits equal to the factor by which the rate is to be divided, and generating an output pulse for each...
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3678507 |
CODE COMPRESSION SYSTEM
A code compression system whose output is an identical maximal length sequence code at a multiple of an input frequency code. A plurality of identical maximal length sequence codes are provided at...
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3587090 |
GREAT RAPIDITY DATA TRANSMISSION SYSTEM
A data transmission system in which information originally consisting of a succession of binary elements is divided into consecutive groups having a constant number of binary elements, and in which...
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3450838 |
DEVICE MODIFYING PITCH FREQUENCY AND/OR ARTICULATION SPEED FOR NATURAL SPEECH
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3439119 |
CIRCUIT ARRANGEMENT FOR TELEGRAPH STORAGE EXCHANGE INSTALLATIONS
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3396239 |
Signal converting system for startstop telegraph signals
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3384709 |
Transmission time-bandwidth reduction system and method
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3363058 |
Data conversion system having storage means
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3362014 |
Information pattern conversion circuit
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3346693 |
Converters for telegraph signals or the like
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3334181 |
Parallel to serial character converter apparatus
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3310626 |
Time shared telegraph transmission system including sequence transmission with reduction of start and stop signals
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3274341 |
Series-parallel recirgulation time compressor
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3149203 |
Pulse code signalling systems
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3135947 |
Variable bit-rate converter
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3051929 |
Digital data converter
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2945625 |
Information handling equipment
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2835801 |
Asynchronous-to-synchronous conversion device
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3564414 |
Title is not available
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