Keyboard instrument with the display device employing fingering guide
First Claim
1. A display device for use with a keyboard instrument comprising:
- display means employing light emission, the display means corresponding to keys on a keyboard instrument;
drive means for turning on/off the display means; and
control means being responsive to a display instruction which sets a display time period for a note within a musical piece and to a light emission characteristic instruction which designates a light emission characteristic of the display means that is decided based on a time ratio of an ON period to an OFF period;
wherein the control means causes the drive means to turn on and off the display means a plurality of times during the display time period for a note according to the time ratio corresponding to the light emission characteristic decided.
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Accused Products
Abstract
A display device displaying a plurality of information sets with a simple structure, and a keyboard instrument that has a key guide device including such a display device. The display is driven at cycles shorter than those discernible by human beings, and the time ratio of ON period to OFF period for the display is changed based on control data. More specifically, the ON state and OFF state are inverted each drive cycle, or the number of cycles during which the display is in ON or OFF state can selected, or the drive cycles are cyclically changed to turn ON the display means only in a designated cycle. In this manner, the luminance of and the hues of the display can be changed relative to the continuous lighting, and a plurality of information sets can be displayed based on this change. This display device may be employed as a fingering guide display device for a keyboard instrument, and position data for keys to be depressed and other playing guide information are displayed at the same time.
171 Citations
19 Claims
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1. A display device for use with a keyboard instrument comprising:
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display means employing light emission, the display means corresponding to keys on a keyboard instrument; drive means for turning on/off the display means; and control means being responsive to a display instruction which sets a display time period for a note within a musical piece and to a light emission characteristic instruction which designates a light emission characteristic of the display means that is decided based on a time ratio of an ON period to an OFF period; wherein the control means causes the drive means to turn on and off the display means a plurality of times during the display time period for a note according to the time ratio corresponding to the light emission characteristic decided. - View Dependent Claims (2, 3, 4, 5, 6, 7, 18)
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8. A keyboard instrument comprising:
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a keyboard; display means including a plurality of light emitting elements respectively corresponding to a plurality of keys on the keyboard and employing light emission; drive means for turning on/off the display means; and control means being responsive to a display instruction which sets a display time period for a note within a musical piece and to a light emission characteristic instruction which designates a light emission characteristic of the display means that is decided based on a time ratio of an ON period to an OFF period; wherein the control means allocates differing time ratios of ON periods to OFF periods to the display means to cause the drive means to turn on and off the display means a plurality of times during the display time period for a note according to the time ratios corresponding to the light emission characteristic decided and the differing time ratios allocated, so that position data for a key to be depressed and at least one set of another playing guide information are displayed at the same time with light emission characteristics different from each other. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A display device comprising:
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light emitting display means that includes a plurality of light emitting elements for emitting different colored lights; drive means for independently driving said light emitting elements that are selected; and control means for controlling said drive means so that, in consonance with a light emission characteristic instruction, a current is supplied to at least one of the light emitting elements and the current has a magnitude set to one of a plurality of predetermined values; wherein the control means, being responsive to a display instruction which sets a display time period for a note within a musical piece and to a light emission characteristic instruction which designates a light emission characteristic of the light emitting display means that is decided based on a time ratio of an ON period to an OFF period, causes the drive means to turn on and off the light emitting display means a plurality of times during the display time period for a note according to the time ratio corresponding to the light emission characteristic decided.
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16. A keyboard instrument comprising:
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light emitting display means, individually provided for corresponding to a plurality of keys on a keyboard, that includes a plurality of light emitting elements for emitting different colored lights; drive means for independently driving said light emitting elements that are selected; and control means for controlling said drive means so that, in consonance with a light emission characteristic instruction, a current is supplied to at least one of the light emitting elements and the current has a magnitude set to one of a plurality of predetermined values, wherein the position data of the keys to be depressed is provided as a light emission characteristic instruction and at least one set of another play guide data is provided as a different light emission characteristic instruction; and wherein the control means, being responsive to a display instruction which sets a display time period for a note within a musical piece and to a light emission characteristic instruction which designates a light emission characteristic of the display means that is decided based on a time ratio of an ON period to an OFF period, causes the drive means to turn on and off the display means a plurality of times during the display time period for a note according to the time ratio corresponding to the light emission characteristic decided. - View Dependent Claims (17, 19)
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Specification