Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Discovision Associates
Original Assignee
MCA Discovision Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CA289,623Aexternal-prioritypatent/CA1069214A/fr
Application filed by MCA Discovision IncfiledCriticalMCA Discovision Inc
Priority to CA313,004ApriorityCriticalpatent/CA1067206A/fr
Application grantedgrantedCritical
Publication of CA1067206ApublicationCriticalpatent/CA1067206A/fr
Optical information recording apparatus and method, optical information reproducing apparatus and method, optical information recording reproducing apparatus and method and optical information recording medium