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Priority claimed from JP25078883Aexternal-prioritypatent/JPS60140790A/ja
Priority claimed from JP59023882Aexternal-prioritypatent/JPS60170176A/ja
Priority claimed from JP59033793Aexternal-prioritypatent/JPS60178690A/ja
Application filed by Sony CorpfiledCriticalSony Corp
Priority claimed from EP84116388Aexternal-prioritypatent/EP0147856B1/de
Application grantedgrantedCritical
Publication of ATE67630T1publicationCriticalpatent/ATE67630T1/de