초록 ▼

A video billboard 10 includes one or more projection units 12 utilizing a liquid crystal light valve projector 32 to project images onto a lenticulated lens screen 34. The types of images to be displayed, along with the time of day in which the images are to be displayed, are controlled from a remot

A video billboard 10 includes one or more projection units 12 utilizing a liquid crystal light valve projector 32 to project images onto a lenticulated lens screen 34. The types of images to be displayed, along with the time of day in which the images are to be displayed, are controlled from a remote master transmitter 24. A plurality of projection units 12(a-d) can be mounted together to provide an enlarged image display area.

대표청구항 ▼

A video billboard system comprising: a plurality of projection unit modules connected together, each projection unit module comprising a hollow housing having an interior projection volume; a liquid crystal light valve projector mounted in each of said housings, said projector having a cathode ray t

A video billboard system comprising: a plurality of projection unit modules connected together, each projection unit module comprising a hollow housing having an interior projection volume; a liquid crystal light valve projector mounted in each of said housings, said projector having a cathode ray tube for controlling characteristic of a liquid crystal device, said liquid crystal device modulating light from a high intensity source; a screen for each of said projection unit modules, said screens arranged to define an enlarged image area for said billboard system and for receiving the modulated light from each of said projectors, respectively; a receiver coupled to said projectors, respectively; transmitter means for transmitting commands to the receivers for controlling images to be projected onto said screens; said screens each comprising an outer protective transparent sheet, a middle lens sheet having a lenticular lens structure and an inner lens sheet having a Fresnel lens structure; and a remote control unit wirelessly coupled to said projectors for aligning images projected by said projectors onto said screens to provide an enlarged image for said billboard system.