Image demonstration device having video camera

Application Number: 00120363
Application Date: 2000.05.26
Publication Number: 1275862
Publication Date: 2000.12.06
Priority Information: 1999/5/26 JP 146812/1999
International: H04N5/74
Applicant(s) Name: Toshiba K. K.
Inventor(s) Name: Watanabe Kohei
Patent Agency Code: 11038
Patent Agent: yang guoxu
Abstract To overlap a video pattern on a sheet table on a video from an external equipment connected to a video input terminal and to display them. A video level decision circuit 22 compares a level of an imaged video signal a1 with a reference level, discriminates the pattern part of a subject, outputs a binarized video signal c1 and supplies it to a video signal processing circuit 27 via a synchronous conversion circuit 23. The circuit 27 converts a binarized video signal f1 and a video signal b1 from a video input terminal 21 into a video signal g1 for display by overlapping the signal f1 on the signal b1 and supplies it to a liquid crystal panel 29.