US5250746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chord detecting apparatus
Assignee: Kawai Musical Instruments Manufacturing Co Ltd
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Filing: 1992-04-09
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Granted: 1993-10-05
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Expires: 2012-04-09
Abstract
Abstract Disclosed are a chord detecting/storing apparatus and an accompaniment information processing apparatus. The chord detecting/storing apparatus designates tones consisting of a chord on a keyboard, and extracts one of the designated notes. Based on the extracted note, the apparatus prepares a row of note bits excluding at least one note. Using this note bit row as an address, the apparatus searches for a chord table in advance where chord information is stored to correspond to each pattern for a row of note bits, and reads out searched chord information to detect a chord. The accompaniment information processing apparatus detects component tones of a chord when the chord is designated from the keyboard, and generates chord information. The accompaniment information processing apparatus produces specific tone information in association with the generated chord information and correlates the specific tone information with the chord information before storing both information items.
Inventors
- 👤 Tsutomu Saito
- 👤 Taichi Kosugi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:40
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/36; G10H1/38; G10H1/383; G10H2210/00; G10H2210/571; G10H2210/591; G10H2210/596; G10H2210/601; G10H2210/616; Y; Y10; Y10S; Y10S84/00; Y10S84/22
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
121 words
A chord detecting/storing apparatus, comprising: designating means for designating musical tones formed by a plurality of notes; note detecting means for detecting individual notes of the musical tones designated by said designating means; note extracting means for extracting one of said individual notes detected by said note detecting means; note bit preparing means for preparing a row of note bits; said note bit preparing means including means for deleting at least one note bit form said row of note bits; a chord table for storing chord information to correspond to a pattern of said row of note bits; and control means for searching said chord table using said row of note bits, and reading chord out information to detect a chord.
Claim 2
Dependent Claim
121 words
A chord detecting/storing apparatus, comprising: designating means for designating musical tones formed by a plurality of notes; note detecting means for detecting individual notes of the musical tones designated by said designating means; note extracting means for extracting one of said individual notes detected by said note detecting means; note bit preparing means for preparing a row of note bits; said note bit preparing means including means for deleting at least one note bit form said row of note bits; a chord table for storing chord information to correspond to a pattern of said row of note bits; and control means for searching said chord table using said row of note bits, and reading chord out information to detect a chord.
Claim 3
Dependent Claim
39 words
A chord detecting/storing apparatus according to claim 1, further comprising chord root altering means for altering a chord root of chord information read out referring to said chord table based on a note extracted by said note extracting means.
Claim 4
Dependent Claim
185 words
A chord detecting/storing apparatus, comprising: designating means for designating musical tones formed by a plurality of notes; note detecting means for detecting individual notes of said musical tones; note bit row preparing and dividing means for preparing and dividing note information detected by said note detecting means into at least two rows of note bits; a first chord table for storing address information to correspond to patterns of said at least two rows of note bits; a second chord table for storing chord information to correspond to said patterns in said first chord table; means enabling said second chord table to acquire said patterns from said first chord table; and control means for referring to said first chord table at least once where said address information is stored by using a predetermined row of note bits prepared and divided by said note bit row preparing and dividing means, means for searching said second chord table for said chord information by using acquired address information and rows of note bits other than said predetermined row, and means for reading out chord information to detect a chord.
Claim 5
Dependent Claim
185 words
A chord detecting/storing apparatus, comprising: designating means for designating musical tones formed by a plurality of notes; note detecting means for detecting individual notes of said musical tones; note bit row preparing and dividing means for preparing and dividing note information detected by said note detecting means into at least two rows of note bits; a first chord table for storing address information to correspond to patterns of said at least two rows of note bits; a second chord table for storing chord information to correspond to said patterns in said first chord table; means enabling said second chord table to acquire said patterns from said first chord table; and control means for referring to said first chord table at least once where said address information is stored by using a predetermined row of note bits prepared and divided by said note bit row preparing and dividing means, means for searching said second chord table for said chord information by using acquired address information and rows of note bits other than said predetermined row, and means for reading out chord information to detect a chord.
Claim 6
Dependent Claim
124 words
A chord detecting and accompaniment information processing apparatus, comprising: designating means for designating musical tones; component note detecting means for detecting component notes of said musical tones; chord information generating means for detecting a chord from said component notes and generating chord information including a chord type and a chord root; specific note information generating means for generating specific note information about said chord information; storing means for storing said specific note information and said chord information and; means for correlating said chord information and said specific tone information to one another so that in a detected chord storing process, a preselected component tone is stored together with information concerning chord type and chord root to facilitate retrieval of the stored chord when needed.
Claim 7
Dependent Claim
124 words
A chord detecting and accompaniment information processing apparatus, comprising: designating means for designating musical tones; component note detecting means for detecting component notes of said musical tones; chord information generating means for detecting a chord from said component notes and generating chord information including a chord type and a chord root; specific note information generating means for generating specific note information about said chord information; storing means for storing said specific note information and said chord information and; means for correlating said chord information and said specific tone information to one another so that in a detected chord storing process, a preselected component tone is stored together with information concerning chord type and chord root to facilitate retrieval of the stored chord when needed.
Claim 8
Dependent Claim
31 words
A chord detecting and accompaniment information process apparatus according to claim 4, wherein said specific note information is a note for designating a lowest note among component notes of a chord.
Claim 9
Dependent Claim
25 words
A chord detecting and information processing apparatus according to claim 4, wherein said specific note information is octave information for component notes of a chord.
Claim 10
Dependent Claim
23 words
An accompaniment information processing apparatus according to claim 4, wherein said preselected component note is the highest note of said detected component notes.
Claim 11
Dependent Claim
28 words
An accompaniment information processing apparatus according to claim 4, wherein said specific note information is a note for designating a highest note among component notes of a chord.
Claim 12
Dependent Claim
29 words
An accompaniment information processing apparatus according to claim 4, wherein said specific note information is a key code for designating a lowest note among component notes of a chord.
Claim 13
Dependent Claim
29 words
An accompaniment information processing apparatus according to claim 4, wherein said specific note information is a key code for designating a highest note among component notes of a chord.
Claim 14
Dependent Claim
74 words
An accompaniment processing apparatus, comprising: designating means for designating musical tones; component note detecting means for detecting component notes of said musical tones; chord/compensation information generating means for generating chord information when a chord is judged to be established by said detected component notes, and for generating compensation information; said compensation information selectively including chord information and component note information; and storing means for selectively storing said chord information and said component note information.
Claim 15
Dependent Claim
74 words
An accompaniment processing apparatus, comprising: designating means for designating musical tones; component note detecting means for detecting component notes of said musical tones; chord/compensation information generating means for generating chord information when a chord is judged to be established by said detected component notes, and for generating compensation information; said compensation information selectively including chord information and component note information; and storing means for selectively storing said chord information and said component note information.
Claim 16
Dependent Claim
28 words
An accompaniment information processing apparatus according to claim 11, wherein said compensation information generated by said chord/compensation information generating means is information about component notes of a chord.
Claim 17
Dependent Claim
17 words
An accompaniment information processing apparatus according to claim 8, wherein said compensation information is chord pitch information.
Claim 18
Dependent Claim
83 words
An accompaniment information processing apparatus, comprising: designating means for designating musical tones; note bit row preparing means for detecting component notes from said musical note and preparing a row of predetermined tone bits; specific note information generating means for generating specific note information relating to a row of said predetermined note bits; and storing means for correlating a row of said predetermined note bits with said specific note information, and storing said row of said predetermined note bits and said specific note information.
Claim 19
Dependent Claim
83 words
An accompaniment information processing apparatus, comprising: designating means for designating musical tones; note bit row preparing means for detecting component notes from said musical note and preparing a row of predetermined tone bits; specific note information generating means for generating specific note information relating to a row of said predetermined note bits; and storing means for correlating a row of said predetermined note bits with said specific note information, and storing said row of said predetermined note bits and said specific note information.
Claim 20
Dependent Claim
29 words
An accompaniment information processing apparatus according to claim 14, wherein said specific note information generated by said specific note information generating means is information to designate a lowest note.
Claim 21
Dependent Claim
21 words
An accompaniment information processing apparatus according to claim 14, wherein said specific note information is information to designate a highest note.
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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) | 1996-10-04 | 1997-04-05 | 1997-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-10-04 | 2001-04-05 | 2001-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-10-04 | 2005-04-05 | 2005-10-05 | $7700.00 | Window Closed / Lapsed |