DE69533831D1 DE1995633831 DE69533831A DE69533831D1 DE 69533831 D1 DE69533831 D1 DE 69533831D1 DE 1995633831 DE1995633831 DE 1995633831 DE 69533831 A DE69533831 A DE 69533831A DE 69533831 D1 DE69533831 D1 DE 69533831D1 Authority DE Germany Prior art keywords apparatus system method transmitting control transmitting Prior art date 1994-05-05 Legal status (The …