Telemetry data word selector and processor

Details Telemetry data word selector and processor Telemetry data word selector and processor

1991-09-20

1993-12-14

Yusko, Donald J.

Communications: electrical

Continuously variable indicating

Plural transmitters

34087001, 34087011, 34082552, 342195, 36442404, G06F 704

Patent

active

052707059

ABSTRACT:
A telemetry word selector and processor device having several digital-to-analog converters (DAC's) receives successive data words each accompanied by a tag word identifying a parameter set in the data word. The device has a tag memory storing, for each possible tag word, a DAC select word having a bit for each DAC and has a bit map memory storing for each DAC a word having a field for each DAC input bit. Each field can address any bit of a data word and has a control bit determining whether the bit is to be unchanged, zeroed, or inverted. The tag memory is addressed by the tag word to output the corresponding word to select DAC's to receive data. The map memory words are output successively, and each field selects a data word bit, as affected by the control bit, for a DAC input word. This word is output to the DAC corresponding to each map memory word if the DAC is selected by the addressed tag memory word. The tag memory thus selects DAC's to receive predetermined data word parameter sets; and, for each DAC, any parameter in a set may be arbitrarily unpacked, scaled, or ignored as determined by the map memory. The parameter set and bit processing for one DAC may be changed, without affecting any other DAC, by reprogramming the memories.

REFERENCES:
patent: H241 (1987-03-01), Duffy
"EMR 8350 Digital Analog Converter Maintenance Manual"; Fairchild Weston tems Inc., Data Systems Division, Sarasota, Fla.; 1987; pp. 1-1 through 1-4, 4-1 through 4-8, 4-36 through 4-46, and 4-59 through 4-79.

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