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Priority claimed from JP62025774Aexternal-prioritypatent/JPS63193375A/ja
Priority claimed from JP62025771Aexternal-prioritypatent/JPH0834025B2/ja
Priority claimed from JP3897287Aexternal-prioritypatent/JP2606202B2/ja
Application filed by Sony CorpfiledCriticalSony Corp
Priority claimed from EP88301001Aexternal-prioritypatent/EP0278702B1/de
Application grantedgrantedCritical
Publication of ATE101296T1publicationCriticalpatent/ATE101296T1/de