×

Method and apparatus for automatically producing in an electronic organ rhythmic accompaniment manual note patterns

  • US 4,120,225 A
  • Filed: 01/17/1977
  • Issued: 10/17/1978
  • Est. Priority Date: 01/17/1977
  • Status: Expired due to Term
First Claim
Patent Images

1. The method of playing notes in a selected rhythmic pattern in an electronic organ having sound signal generator means, transducer means and keyers connecting the generator means with the transducer means, said organ having playing keys and multiplexing means for scanning said playing keys sequentially and including a counter driven by a high frequency clock and having a binary word output, said organ also having demultiplexer means responsive to binary data supplied thereto for actuating said keyers and synchronized with said multiplexer means, said method comprising:

  • developing a respective first binary word in conformity with the depression of each of at least some of said playing keys forming pattern control kys, developing a first series of binary words in succession according to a selected rhythmic pattern and substantially slower than the frequency of the multiplexer clock, sequentially combining said first binary word with each word of said first series of binary words to develop a second series of binary words, comparing each word of said second series of binary words with the binary word output of said counter, and supplying a pulse to said demultiplexer means each time the compared words are equal.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×