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Priority claimed from JP3707985Aexternal-prioritypatent/JPH0814852B2/en
Priority claimed from JP3707785Aexternal-prioritypatent/JPS61195467A/en
Priority claimed from JP3707885Aexternal-prioritypatent/JPS61195468A/en
Application filed by Sony CorpfiledCriticalSony Corp
Priority claimed from EP86102358Aexternal-prioritypatent/EP0193151B1/en
Application grantedgrantedCritical
Publication of ATE97246T1publicationCriticalpatent/ATE97246T1/en