Multiple-input CML gates with a stack height of one are provided by using a composite device wherein input signals are propagated to the output through two or more stages of CML-like primitives connected in succession. The color conversion type organic EL display can further comprise a color filter substrate in which a black matrix and a color filter are formed in a pattern on a transparent substrate by a photo process, and which has a pixel region separated by the black matrix. Such engagement means also aligns the coils of the implantable devices that are thus engaged with the engaging means to allow electromagnetic coupling to occur between the aligned coils. The estimated rate-distortion characteristics of the first pass are used to select Qps for the second pass in a manner that minimizes quality fluctuation between the frames of the video sequence. The impeller rotates at a constant speed to disperse the deposited material at a uniform distance from the apparatus, and the position on which the material is deposited on the impeller is adjustable.