| 摘要 |
<p>PURPOSE:To obtain more kinds of control signal with a small amount of control bit data, and surely execute a decoding by making a decoder receive the bit of a prescribed figure position according to a latch signal, decoding it, and selectively operating one of plural control data latch circuits. CONSTITUTION:A control data latch circuit 14 is provided at a control subject correspondence, and one of them is selectively operated by decoding the signal of the prescribed figure position of a control data. Then, in a control signal decoding circuit 10, the bit number of the control data can be reduced for the amount of decode bit number. Also, the space is made small by resetting a latch bit by the opposite edge of a clock signal, so an accurate control data can be transferred to the desired control data latch circuit 14 from a shift register 11. Thus, there is no need to take the bit number of the control data latch circuit in the control signal decoding circuit for the amount of bit number transferred from a CPU 1, and more kinds of serial codes can be surely obtained.</p> |
