US 3,964,064 A · Data display system having a multilevel video storage device

Abstract

A radar return signal is analyzed by amplitude comparators so as to classify the radar return signal with respect to 2.sup.n -1 threshold levels to thus produce n parallel bits for each classification defining the instantaneous amplitude of the radar return signal. The bits in a given significant bit position (most significant, least significant, etc.) comprise a word which moves through the video storage device serially with respect to bits in the same significant bit position and in parallel with respect to bits in the word comprised of different significance bits. Input buffers in the form of n storage registers are provided, each storage register being associated with a particular bit significance. The bits are entered into their associated storage register at a rate dependent upon the desired radar range. The bits are optionally integrated on a bit-by-bit basis and then entered into a main memory having n circulating storage registers arranged in parallel. The information stored in the main memory is subsequently recalled and conveyed through output buffers for display on a cathode ray tube. The output buffers are comprised of n further storage registers. Each of these further storage registers is associated with a particular circulating storage register. The bits from a circulating storage register are conveyed to its associated further storage register. The bits in the output buffers are subsequently passed into a digital to analog converter, the output of the converter being applied to the cathode ray tube for display.

Claims29

Dependent claims

A display device for a radar system wherein a train of first signals corresponding to radar transmissions is generated and which receives a sequence of radar return signals, said device including a master oscillator means for generating a plurality of coherent control signals, comprising:

an analog to digital converter for converting each said radar return signal into at least first and second parallel binary words, each said word being comprised of a train of serial binary bits;
a plurality of input means, each associated with an individual one of said binary words and each said input means having a capacity to store a predetermined number of binary bits;
a main memory including a plurality of individual circulating memories, each associated with an individual one of said input means;
first gate means responsive during a first period to said first signals for communicating each said binary word to its associated input means whereby said binary words are stored in a bit-by-bit manner, and for communicating each said input means to its associated circulating memory in response to said coherent control signals whereby a binary word previously stored in said input means is stored in said main memory;
a plurality of output means, each associated with an individual one of said circulating memories;
utilization means responsive to said coherent control signals for displaying binary data applied thereto;
and
second gate means responsive to said coherent control signals for communicating each said circulating memory to its associated output means whereby binary words stored in said circulating memories are stored in said output means, and for applying the binary words stored in said output means to said utilization means.

5 more elements

A display device for a radar system wherein a train of first signals corresponding to radar transmissions is generated and which receives a sequence of radar return signals, comprising:

a master oscillator means for generating a plurality of coherent control signals;
means for converting each of said radar return signals into at least first and second parallel binary words, each said word being comprised of a train of serial binary bits;
binary input means for storing data related to said at least first and second parallel binary words;
circulating memory means for storing data related to data stored in said binary input means;
first means responsive during a first period to said first signals for communicating at least said first and second parallel binary words to said binary input means for storing said data related to said at least first and second parallel binary words therein, and for storing in said circulating memory means data related to the data stored in said binary input means in response to said coherent control signals;
output means;
utilization means responsive to said coherent control signals for displaying data applied thereto;
and
second means responsive to said coherent control signals for storing data from said circulating memory means into said output means and for applying data from said output means to said utilization means.

6 more elements

Dependencies are inferred from the claim text.

Data display system having a multilevel video storage device

Life of this patent

Data display system having a multilevel video storage device

Life of this patent

Abstract

Claims29