US 5,266,736 AGranted

Interruption control apparatus for use in performance information processing system

AssigneeKawai Musical Instrument Mfg. Co., Ltd.

InventorTsutomu Saito

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Abstract

An interruption control apparatus for controlling interruptions of a performance information processor for processing performance information of a piece of music. The interruption control apparatus includes a first time control unit for regulating the length of a time interval between successive interruptions of the performance information processor according to a pre-set tempo in such a manner that the regulated time interval is limited within a predetermined constant range, and for outputting an interruption signal at the regulated time interval. The interruption control apparatus further includes a second time control unit for receiving the interruption signal and increasing a parameter of a register by an increment, of which the value varies as a function of the pre-set tempo, every reception of the interruption signal and for further transferring performance information to the performance information processor each time the parameter reaches a predetermined value and then resetting the parameter to become zero. Also, an interruption processing unit is included for receiving the interruption signal and interrupting the performance information processor in response to the received interruption signal.

Claims8

Dependent claims

A performance information processing system having tempo setting means for setting a tempo for playing a piece of music and interruption signal generating means for generating an interruption signal at a time interval corresponding to a value of a tempo set by the tempo setting means, the performance information processing system comprising:

operation performing means for performing compensation of a value of the tempo set by the tempo setting means when the value of the set tempo exceeds a predetermined maximum efficiency operational range of the performance information processing system;
setting means for setting the result of the operation performed by said operation performing means in the interruption signal generating means to thereby make a period of the interruption signal longer than a period thereof corresponding to the value of the tempo set by the tempo setting means;
parameter setting means for recompensating the result of the operation performed by said operation performing means and setting a value of a parameter which varies in accordance with the value of the tempo set by the tempo setting means;
counting means for calculating a value by adding an increment to a current value of a count and using the value of the parameter set by said parameter setting means as the increment;
and
performance information processing means for processing performance data according to the value of the count calculated by said counting means.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 07/749,335Filed 23 Aug 1991 · continuation
Priority: JP 63-15396221 Jun 1988
Granted: 30 Nov 1993
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

G10H 1/40
Accompaniment arrangements: rhythm
G10H 1/0008
Details of electrophonic musical instruments: associated control or indicating means
G10H 2210/381
Tempo or beat alterations; Music timing control: manual tempo setting or adjustment
G10H 2230/041
Computing or signal processing architecture features: processor load management, i.e. adaptation or optimization of computational load or data…