Patent US4922794A successfully refreshed from Google Patents.
US4922794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic musical instrument having external memory devices
Assignee: Yamaha Corp
•
Filing: 1988-02-03
•
Granted: 1990-05-08
•
Expires: 2008-02-03
Abstract
Abstract An electronic musical instrument includes a musical tone information storing device, a plurality of external memory devices, a control unit, a switching unit, and a determining unit. The musical tone information storing device stores musical tone information. The control unit controls information transfer between at least one of the external memory devices and the musical tone information storing device. The switching unit generates a transfer command. The determining unit determines whether an external memory device of the highest priority in accordance with a predetermined priority is in a transfer enable state. The control unit controls information transfer between the external memory device of the highest priority which is selected by the determining unit and the musical tone information storing device.
Inventors
- 👤 Takeo Shibukawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:12
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/0033; G10H1/0041; G10H7/00; G10H7/002; Y; Y10; Y10S; Y10S84/00; Y10S84/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
107 words
An electronic musical instrument comprising: a musical tone information storing device for storing musical tone information; a plurality of external memory devices; control means for controlling information transfer between at least one of said external memory devices and said musical tone information storing device; switching means for generating a transfer command; and determining means for determining an external memory device of a highest priority in accordance with a predetermined priority which is in a transfer enable state, wherein said control means controls information transfer between the external memory device of the highest priority which is determined by said determining means and said musical tone information storing device.
Claim 2
Dependent Claim
107 words
An electronic musical instrument comprising: a musical tone information storing device for storing musical tone information; a plurality of external memory devices; control means for controlling information transfer between at least one of said external memory devices and said musical tone information storing device; switching means for generating a transfer command; and determining means for determining an external memory device of a highest priority in accordance with a predetermined priority which is in a transfer enable state, wherein said control means controls information transfer between the external memory device of the highest priority which is determined by said determining means and said musical tone information storing device.
Claim 3
Dependent Claim
78 words
A musical instrument according to claim 1, further comprising capacity checking means for checking whether a memory capacity of an external memory device to which information is to be transferred is larger than all information amount of said musical tone information storing device, wherein said control means controls transfer when the memory capacity of said external memory device to which information is to be transferred is larger than the information amount of said musical tone information storing device.
Claim 4
Dependent Claim
65 words
A musical instrument according to claim 1, wherein when said determining means determines on the basis of the transfer command generated from said switching means that said external memory device of the highest priority is not in the transfer enable state, said control means causes said determining means to determine whether an external memory device of the next priority is in a transfer enable state.
Claim 5
Dependent Claim
39 words
A musical instrument according to claim 3, wherein said control means controls information transfer between said external memory device of the next priority and said musical tone information storing device in accordance with information obtained from said determining means.
Claim 6
Dependent Claim
92 words
A musical instrument according to claim 1, further comprising full checking means for, when information is transferred to an external memory device, checking whether said external memory device is filled, wherein when said external memory device is filled during transfer, said control means causes said determining means to determine whether an external memory device of the next priority is in the transfer enable state, and when said external memory device of the next priority is in the transfer enable state, transfers the information to said external memory device of the next priority.
Claim 7
Dependent Claim
57 words
A musical instrument according to claim 1, further comprising connection information means for representing which external memory devices is connected to a musical instrument main body, wherein said determining means determines on the basis of connection information from said connection information means whether said external memory device of the highest priority is in the transfer enable state.
Claim 8
Dependent Claim
18 words
A musical instrument according to claim 1, wherein the musical tone information is input by a key operation.
Claim 9
Dependent Claim
18 words
A musical instrument according to claim 1, wherein the musical tone information is pitch and tone duration information.
References Cited (Backward Citations)
US3449724A
Cited
US4147083A
Cited
US4287568A
Cited
US4215619A
Cited
US4615024A
Cited
US4614983A
Cited
US4624171A
Cited
US4572048A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-05-07 | 1993-11-06 | 1994-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-07 | 1997-11-06 | 1998-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-07 | 2001-11-06 | 2002-05-08 | $7700.00 | Window Closed / Lapsed |