Document Type and Number:
Japanese Patent JPS4923521
Kind Code:
A
Application Number:
JP6268572A
Publication Date:
March 02, 1974
Filing Date:
June 22, 1972
Export Citation:
International Classes:
G03B1/56; G11B15/67; H04N5/84; H04N9/79; (IPC1-7): H04N5/84