05140474 is referenced by 12 patents and cites 2 patents.

In a run length limited digital signal of the d,k type, (d+m)-bit digital words are inserted at specific instants in the data stream in a manner such that the signal thus obtained is a run length limited signal of the d,k' type, where k' is greater than or equal to k. This signal is then encoded in an aT precoder, a being an integer such that a .gtoreq.1, and recorded on a magnetic record carrier (21). Such (d+m)-bit digital words are inserted so that the digital sum value of the output signal of the precoder has a desired pattern as a function of time. Thus, for example, a pilot signal can be accommodated in the output data stream of the precoder, which pilot signal can be detected during reproduction of the recorded signal. From this detected pilot signal a control signal can be derived for controlling tracking during reproduction of the recorded signal.

Title
Device for recording a digital information signal on a record carrier
Application Number
7/712166
Publication Number
5140474
Application Date
June 6, 1991
Publication Date
August 18, 1992
Inventor
Kornelis A Schouhamer Immink
Eindhoven
NL
Josephus A H M Kahlman
Eindhoven
NL
Agent
Leroy Eason
Assignee
U S Philips Corporation
NY, US
IPC
G11B 5/09
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