Circuitry for displaying a constantly changing M-mode output on

Details Circuitry for displaying a constantly changing M-mode output on Circuitry for displaying a constantly changing M-mode output on

1977-10-31

1979-07-10

Chapnick, Melvin B.

Boots, shoes, and leggings

340724, 340799, G06F 314

Patent

active

041610350

ABSTRACT:
Circuitry for displaying a constantly changing M-mode transducer scan output on a raster scan display in the form of a first multiplicity of data lines each containing a second multiplicity of data words and each representing a scan of the transducer output at a particular closely spaced scanning time and such that the data line representing the oldest scan is periodically erased and a data line representing the newest scan is displayed. The circuitry includes random access memory having a first multiplicity of memory elements each for storing a data line. A random access memory input counter enables loading of the memory, data line by data line, and a random access memory advance output counter enables read out from the memory sequentially one data word from each line for each raster scan.

REFERENCES:
patent: 3835455 (1974-09-01), Abbenante
patent: 3883852 (1975-05-01), Cotter
patent: 3898644 (1975-08-01), Baxter
patent: 3909792 (1975-09-01), Harris et al.
patent: 3947826 (1976-03-01), Bockwoldt
patent: 4045815 (1977-08-01), Griffith et al.
patent: 4070662 (1978-01-01), Narveson

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