摘要:
By installing a diffuser (7) between a group of projectors (1) and lenses (2) to spread light rays from the projector group, it is possible to provide pixels with such sizes as to give perception that pixels are adjacent to each other. As a result, smooth representation of images and video display with a high stereoscopic effect are made possible.
摘要:
There is provided a method by which, when a broadcast receiving device downloads and stores a content with an expiration time from a communication line etc, and a user reproduces the content, an electronic clock for judging the validity of the expiration time is set to a correct time and whether to reproduce the content or not is properly judged by using the correct time. In the method, the user is not allowed to set the electronic clock inside the broadcast receiving device, the clock is not set when the receiving device is started up, and time information is acquired from a broadcast wave or a communication line. If the time information is successfully acquired, the electronic clock is set by the acquired time information and then is used for judging the expiration time for use of the content on the assumption that the clock has been set correctly.
摘要:
A liquid crystal projector, having a configuration in which an exhaust fan (38) is arranged adjacently to a projection lens (37; 82) at an angle to the optical axis of the projection lens, a configuration including a plurality of tilted wind-directing plates (40), a configuration in which the arrangement of a first reflection mirror (10; 55), a first lens array (4; 54), a light source (1; 51) and the exhaust fan is substantially parallel and adjacent to the arrangement of the projection lens, a dichroic prism (35; 80) and a second dichroic mirror (19; 64), and/or a configuration in which the lens array has the incident surface thereof made of a concave lens (43).