Method of and apparatus for successively recording efm-modulated signals
CA 1319983 C · Owner: Mons, Johannes J. · Inventors: Roth, Rudolf; Mons, Johannes J.; Raaijmakers, Wilhelmus P.M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
PHQ 88.002 06.09.1988, ABSTRACT:, Method of and apparatus for successively recording EFM-modulated signals. A method of and apparatus for recording a first and a second EFM-modulated signal is described which signals comprise EFM-, subcode frames the beginning of each EFM-subcode frame being marked by a subcode-synchronisation signal. In the track portion of a record carrier (1) intended for recording position-synchronisation signals are recorded by means of a track modulation which can be distinguished from the information pattern to be formed. During recording the subcodesynchronisation signals are maintained substantially in phase with the position-synchronisation signals (11), so that …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted July 6, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 6, 2010.
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