公开(公告)号：EP1986178A1

公开(公告)日：2008-10-29

申请号：EP06832945.7

申请日：2006-11-20

申请人： Hiji High-Tech Co., Ltd.

发明人： SATO, Tatsumi ,  MAKI, Kazuhiko ,  WADA, Toshiyuki ,  YANAI, Takamasa

IPC分类号： G09G3/30 ,  B41J2/44 ,  B41J2/445 ,  B41J2/45 ,  B41J2/455 ,  G09G3/18 ,  G09G3/20 ,  G09G3/36

CPC分类号： B41J2/45 ,  G09G3/3216 ,  G09G3/325 ,  G09G3/3283 ,  G09G3/3291 ,  G09G3/3607 ,  G09G3/3614 ,  G09G3/3685 ,  G09G3/3688 ,  G09G2300/0426 ,  G09G2300/06 ,  G09G2300/0842 ,  G09G2310/0248 ,  G09G2310/0272 ,  G09G2320/0223 ,  G09G2320/0233 ,  G09G2320/0242 ,  G09G2320/0276

摘要： The invention provides a multichannel drive circuit by which, even when there occurs a variation between channels in circuit characteristics of each channel including current source due to the semiconductor manufacturing process and the like, loads of each channel constituting a load array can be driven under conditions uniform between all the channels. The invention includes; an interchannel common connection line (5) for making conduction between respective current paths of each channel for connecting the respective current sources of each channel constituting a current source array (11) with respective input switches of each channel constituting an input switch array (13); and current blocking means (12) for blocking output current of the current source of that channel of the plurality of channels in which the input switch is in an OFF state from flowing into the interchannel common connection line.

摘要翻译： 本发明提供了一种多通道驱动电路，即使由于半导体制造工艺等而导致包括电流源在内的每个通道的电路特性的通道之间发生变化，也可以在条件下驱动构成负载阵列的每个通道的负载 所有渠道之间均匀。 本发明包括 用于在构成电流源阵列（11）的每个通道的每个通道的各个电流源与构成输入开关阵列（13）的每个通道的各个输入开关连接的用于在每个通道的各个电流路径之间导通的通道间公共连接线（5） ; 以及用于阻止输入开关处于OFF状态的多个通道中的该通道的电流源的输出电流的电流阻塞装置（12）不流入通道间公共连接线。