US4655114A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tone generating apparatus
Assignee: Casio Computer Co Ltd
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Filing: 1984-07-23
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Granted: 1987-04-07
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Expires: 2004-07-23
Abstract
Abstract A plurality of envelope generating circuits provide output envelope waveforms which are controlled according to the output from a plurality of timbre switches. The envelope waveform of at least one of the envelope generating circuits is modified according to a touch data output of a touch data detecting circuit for detecting a way of operation of a performance key.
Inventors
- 👤 Takuya Sunada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:57
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/02; G10H1/04; G10H1/053; G10H1/057
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
131 words
A tone generating apparatus comprising: means for sequentially outputting a plurality of waveform data constituting one waveform period, each waveform data representing one of the portions of a waveform; means for setting a plurality of timbre data corresponding to at least one designated timbre; means coupled to said timbre data setting means for generating a plurality of different envelope waveforms; means for generating touch data in accordance with a way of operation of performance keys; means for controlling at least one of said plurality of different envelope waveforms as a function of said touch data; and means for selectively allotting said envelope waveforms for each of the waveform portions so as to obtain a tone data by adapting an allotted envelope waveform to a waveform data corresponding to the waveform portion.
Claim 2
Dependent Claim
131 words
A tone generating apparatus comprising: means for sequentially outputting a plurality of waveform data constituting one waveform period, each waveform data representing one of the portions of a waveform; means for setting a plurality of timbre data corresponding to at least one designated timbre; means coupled to said timbre data setting means for generating a plurality of different envelope waveforms; means for generating touch data in accordance with a way of operation of performance keys; means for controlling at least one of said plurality of different envelope waveforms as a function of said touch data; and means for selectively allotting said envelope waveforms for each of the waveform portions so as to obtain a tone data by adapting an allotted envelope waveform to a waveform data corresponding to the waveform portion.
Claim 3
Dependent Claim
63 words
The tone generating apparatus according to claim 1, wherein said envelope waveform generating means includes: a decoder coupled to said timbre data setting means for decoding said timbre data; means for generating an envelope clock according to the output of said decoder; means for counting said envelope clock; and means for comparing the count contents of said counting means and said touch data.
Claim 4
Dependent Claim
62 words
The tone generating apparatus according to claim 2, which further comprises: data transforming means coupled to an output terminal of said touch data generating means for transforming said touch data to a plurality of different touch data; and means for supplying said plurality of different touch data to said envelope waveform generating means for generating a plurality of modified envelope waveform data.
Claim 5
Dependent Claim
108 words
A tone generating apparatus comprising: means for sequentially outputting a plurality of waveform data constituting one waveform period, each waveform data representing one of portions of a waveform; means for generating a plurality of different envelope waveforms; means for generating touch data in accordance with a way of operation of performance keys; means for controlling at least one of said plurality of different envelope waveforms as a function of said touch data; and means for selectively allotting said envelope waveforms for each of the waveform portions so as to obtain a tone data by adapting an allotted envelope waveform to a waveform data corresponding to the waveform portion.
Claim 6
Dependent Claim
108 words
A tone generating apparatus comprising: means for sequentially outputting a plurality of waveform data constituting one waveform period, each waveform data representing one of portions of a waveform; means for generating a plurality of different envelope waveforms; means for generating touch data in accordance with a way of operation of performance keys; means for controlling at least one of said plurality of different envelope waveforms as a function of said touch data; and means for selectively allotting said envelope waveforms for each of the waveform portions so as to obtain a tone data by adapting an allotted envelope waveform to a waveform data corresponding to the waveform portion.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-04-06 | 1990-10-06 | 1991-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-06 | 1994-10-06 | 1995-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-06 | 1998-10-06 | 1999-04-07 | $7700.00 | Window Closed / Lapsed |