Abstract: A program distribution system for distributing a program to a client is provided with a program distributing device and a client terminal device utilized by the client. The program distributing device includes a program subdividing section for subdividing the program into a plurality of program blocks each having a predetermined size, and a program distributing-section configured to store the program blocks, authenticate the client and distribute the program blocks to a client terminal device. The client terminal device includes a program block storing portion, a restoration schedule setting portion, and a program storing portion. The restoration schedule setting portion is configured to set a scheduled time for restoration of the program from the program blocks. The distribution of the program blocks from the program distribution device to the client terminal device is executed in a time-divided manner.

Abstract: A light scattering type liquid crystal display device is here disclosed which comprises a liquid crystal cell comprising at least electrodes and alignment layers formed on opposite surfaces of a pair of opposite substrates and a chiral nematic liquid crystal layer having a planar structure sealed between the pair of substrates, and a voltage application means for feeding an application voltage to both the electrodes formed respectively on the pair of substrates, wherein by feeding the application voltage having a predetermined voltage waveform to both the electrodes from the voltage application means, a light scattering texture comprising a group of at least 3 planar structures having different twist angles is generated, held or erased in the chiral nematic liquid crystal layer. This display device is not equipped with any polarizing plate, and it has a high utilization efficiency, a wide visual angle and a high-speed response performance and it enables its driving at a low voltage.