Command buffers for electronic code keyer

Details Command buffers for electronic code keyer Command buffers for electronic code keyer

1981-04-17

1982-06-01

Robinson, Thomas A.

Communications: electrical

Audible indication

Percussion-type sound producer

178 175, 178 79, G06F 302, H04L 1308, H03R 1300

Patent

active

043330916

ABSTRACT:
A system is disclosed for utilizing command buffers in a microprocessor controlled electronic code keyer for storing, rather than text to be transmitted, command strings for keyer operation. The command string is defined by a series of keypad closures for selecting a sequence of text buffers to be transmitted. In addition, the command buffers may be used during automatic text transmission to selectively change keyer parameters such as the speed of character transmission, inter-character and inter-word spacing, dot-to-dash-to-space ratio, or the number of times the contents of a text buffer will be automatically repeated. The use of text and command buffers permits the formation of essentially errorless Morse code transmissions, substantially enhances keyer operating and makes more efficient use of available memory.

REFERENCES:
patent: 3564139 (1971-02-01), Bodenstein et al.
patent: 3895185 (1975-07-01), Ramsey
patent: 4179748 (1979-12-01), Brown et al.
Advanced Electronic Applications, Inc.
Mostek Single-Chip Microcomputer MK3870.
SYNERTEK CMOS 256.times.4 Static Random Access Memory.

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