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US4920849A Expired / Lapsed US ⏱️ 0.0 years remaining

Automatic performance apparatus for an electronic musical instrument

Assignee: Yamaha Corp
•
Filing: 1989-01-05
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Granted: 1990-05-01
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Expires: 2009-01-05
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Abstract

Abstract An automatic performance apparatus which records a performance state in the form of performance data in a storage means, and plays back a performance based on the performance data read out from the storage means In a record mode, a chord detection means discriminates whether or not a chord has been established. If a chord has been established, then chord information is written in memory. If a chord has not been established, then tone information including key-on information or a note portion of key-on information, excluding octave information, is written in memory. The automatic performance apparatus enables the use of a storage means having a greatly reduced storage capacity as compared to a prior art one, and pitch or note information designated at a keyboard or the like are recorded/played back as performance data without modification.

Inventors

  • 👤 Kotaro Mizuno

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 15:02
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/36; G10H1/38; G10H1/0033; G10H1/0041; G10H1/383; Y; Y10; Y10S; Y10S84/00; Y10S84/22

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 151 words
An automatic performance apparatus for an electronic musical instrument, comprising: input means for designating tone information including pitch information; mode selection means for selecting one of a record mode and a play mode, wherein said modes represent controlling states; chord detection means for, when the mode selection means has selected a record mode, discriminating based on pitch information outputted from said input means whether or not a chord is established, and for, when a cord is established, generating chord information; storage means for storing chord information and tone information; writing means for, when a chord is established in a record mode, writing chord information in said storage means, and for, when a chord is not established in a record mode, writing tone information in said storage means; and reading means for, in a play mode, reading out the information written in said storage means so as to control generation of tones.
Claim 2
Dependent Claim 151 words
An automatic performance apparatus for an electronic musical instrument, comprising: input means for designating tone information including pitch information; mode selection means for selecting one of a record mode and a play mode, wherein said modes represent controlling states; chord detection means for, when the mode selection means has selected a record mode, discriminating based on pitch information outputted from said input means whether or not a chord is established, and for, when a cord is established, generating chord information; storage means for storing chord information and tone information; writing means for, when a chord is established in a record mode, writing chord information in said storage means, and for, when a chord is not established in a record mode, writing tone information in said storage means; and reading means for, in a play mode, reading out the information written in said storage means so as to control generation of tones.
Claim 3
Dependent Claim 15 words
An automatic performance apparatus according to claim 1, wherein said input means is a keyboard.
Claim 4
Dependent Claim 38 words
An automatic performance apparatus according to claim 2, wherein said tone information includes at least one of key-on information from said keyboard and information of only a note portion of key-on information from said keyboard excluding octave information.

References Cited (Backward Citations)

US4587878A Cited
JPS62187388A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1993-04-30 1993-10-30 1994-05-01 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1997-04-30 1997-10-30 1998-05-01 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2001-04-30 2001-10-30 2002-05-01 $7700.00 Window Closed / Lapsed

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