Patent ID: 11958290
Assignee: BROTHER KOGYO KABUSHIKI KAISHA
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 9:
10. A head control method for a head having a first nozzle and a second nozzle, comprising:
reading, from a first memory, a plurality of first data values which is quantized and which is included in first data representing a first driving waveform and a plurality of second data values which is quantized and which is included in second data representing a second driving waveform different from the first driving waveform, and outputting first time division multiplex data in which the first data values and the second data values read from the first memory are aligned in time series, to a first digital-analog converter;
converting the first time division multiplex data into an analog signal to generate a first time division multiplex signal, and outputting the first time division multiplex signal to a first switch and a second switch corresponding to the first nozzle;
reading, from a second memory, a plurality of third data values which is quantized and which is included in third data representing a third driving waveform and a plurality of fourth data values which is quantized and which is included in fourth data representing a fourth driving waveform different from the third driving waveform, and outputting second time division multiplex data in which the third data values and the fourth data values read from the second memory are aligned in time series, to a second digital-analog converter;
converting the second time division multiplex data into an analog signal to generate a second time division multiplex signal, and outputting the second time division multiplex signal to a third switch and a fourth switch corresponding to the second nozzle;
outputting, to the first switch and the third switch, a first selection signal configured to select any one of the first switch and the third switch and a first synchronization signal configured to indicate an opening-closing timing of a selected one of the first switch and the third switch;
outputting, to the second switch and the fourth switch, a second selection signal configured to select any one of the second switch and the fourth switch and a second synchronization signal configured to indicate an opening-closing timing of a selected one of the second switch and the fourth switch;
based on the first selection signal and the first synchronization signal, opening and closing the first switch to separate a first driving waveform signal representing the first driving waveform or a second driving waveform signal representing the second driving waveform from the first time division multiplex signal outputted from the first digital-analog converter or opening and closing the third switch to separate a third driving waveform signal representing the third driving waveform or a fourth driving waveform signal representing the fourth driving waveform from the second time division multiplex signal outputted from the second digital-analog converter; and
based on the second selection signal and the second synchronization signal, opening and closing the second switch to separate the first driving waveform signal or the second driving waveform signal from the first time division multiplex signal outputted from the first digital-analog converter or opening and closing the fourth switch to separate the third driving waveform signal or the fourth driving waveform signal from the second time division multiplex signal outputted from the second digital-analog converter.