Recording device, a record carrier having preformatted address codes and auxiliary codes providing control data for use by the recording device, and an information recording system including both the recording device and the record carrier

• US 5,418,764 A
• Filed: 03/31/1993
• Issued: 05/23/1995
• Est. Priority Date: 01/22/1988
• Status: Expired due to Term

• Current Assignee: US Philips Corporation (Koninklijke Philips N.V.)
• Original Assignee: US Philips Corporation (Koninklijke Philips N.V.)
• Inventors: Roth, Rudolf, Van Der Zande, Paulus C. M.
• Primary Examiner(s): Epps, Georgia Y.
• Assistant Examiner(s): HINDI, NABIL Z
• Application Number:
  US08/041,141
• Time in Patent Office: 783 Days
• Field of Search: 369/32, 369/48, 369/111, 369/44.1, 369/47, 369/59, 369/50, 369/116
• US Class Current: 369/30.04
• CPC Class Codes: G11B 11/10504 Recording for shaping of magnetic domains G11B11/10528, for compensation of shift G11B11/1053
• CPC Class Codes: G11B 11/10563 Access of indexed parts
• CPC Class Codes: G11B 11/10578 Servo format, e.g. prepits, guide tracks, pilot signals
• CPC Class Codes: G11B 11/10595 Control of operating function
• CPC Class Codes: G11B 19/247 using electrical means
• CPC Class Codes: G11B 20/00086 Circuits for prevention of unauthorised reproduction or copying, e.g. piracy indicating unauthorised use of record carriers in general G11B23/28; scrambling for television signal recording H04N5/913; network architectures or network protocols for network security H04L63/00; cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
• CPC Class Codes: G11B 20/00586 said format change concerning the physical format of the recording medium
• CPC Class Codes: G11B 20/0071 involving a purchase action
• CPC Class Codes: G11B 20/12 Formatting, e.g. arrangement of data block or words on the record carriers within interface between computers and data recorders G06F3/06
• CPC Class Codes: G11B 20/1217 on discs
• CPC Class Codes: G11B 2220/213 Read-only discs
• CPC Class Codes: G11B 2220/216 Rewritable discs
• CPC Class Codes: G11B 2220/218 Write-once discs
• CPC Class Codes: G11B 2220/2525 Magneto-optical [MO] discs
• CPC Class Codes: G11B 2220/2545 CDs
• CPC Class Codes: G11B 2220/65 wherein solid state memory is used for storing indexing information or metadata
• CPC Class Codes: G11B 23/281 by changing the physical properties of the record carrier
• CPC Class Codes: G11B 27/022 Electronic editing of analogue information signals, e.g. audio or video signals
• CPC Class Codes: G11B 27/031 Electronic editing of digitised analogue information signals, e.g. audio or video signals
• CPC Class Codes: G11B 27/034 on discs G11B27/036, G11B27/038 take precedence
• CPC Class Codes: G11B 27/11 : by using information not detectable on the record carrier
• CPC Class Codes: G11B 27/24 : by sensing features on the record carrier other than the transducing track ; sensing signals or marks recorded by another method than the main recording
• CPC Class Codes: G11B 27/3027 : used signal is digitally coded
• CPC Class Codes: G11B 27/3063 : Subcodes
• CPC Class Codes: G11B 27/329 : on a disc [VTOC]
• CPC Class Codes: G11B 7/0037 : with discs
• CPC Class Codes: G11B 7/00736 : Auxiliary data, e.g. lead-in, lead-out, Power Calibration Area [PCA], Burst Cutting Area [BCA], control information sector headers or adresses in prepits G11B7/00745; address data in track wobble G11B7/24082
• CPC Class Codes: G11B 7/013 : for discrete information, i.e. where each information unit is stored in a distinct discrete location , e.g. digital information formats within a data block or sector
• CPC Class Codes: G11B 7/24082 : Meandering
• CPC Class Codes: G11B 7/24085 : Pits
• CPC Class Codes: G11B 7/28 : Re-recording, i.e. transcribing information from one optical record carrier on to one or more similar or dissimilar record carriers

Abstract

A recording device, record carrier, and information recording system including both. The recording device is adapted to read an auxiliary signal from the record carrier. The record carrier has a track which is transversely modulated in accordance with the auxiliary signal. The auxiliary signal includes address codes which specify addresses at which those codes are located on the track, and auxiliary codes which specify control data for use by the recording device when recording an information signal on the track. The address codes and auxiliary codes are distinguishable from each other and can be extracted by the recording device.

Claims

1. An information recording system, comprising:

a record carrier having a preformed recording track which is transversely modulated in accordance with an auxiliary signal which includes successive address codes specifying addresses of successive track portions at which said address codes are located and auxiliary codes, arranged among said address codes, specifying control data for use by the recording system, said auxiliary codes having identifying indicia which distinguishes them from said address codes; and

a recording device comprising read means for reading said auxiliary signal from said track, recording means for recording an information signal on said track, means for selectively extracting said address codes and said auxiliary codes from said auxiliary signal read from said track, and control means for controlling said recording means in accordance with said control data specified by said auxiliary codes.

2. The information recording system as claimed in claim 1, characterized in that said address codes and said auxiliary codes have the same data format.

3. The information recording system as claimed in claim 1, wherein said address codes include absolute time codes specifying said distances as playing time of said record carrier from said reference position.

4. The information recording system as claimed in claim 2, wherein said auxiliary codes are distinguished from said address codes in that said auxiliary codes comprise bit combinations which do not occur in said address codes.

5. The information recording system as claimed in claim 2, wherein said recording means is adapted to produce a write beam of radiation having an energy level for recording said information signal on said track;

said control data specifies a desired energy level for said write beam; and

said control means is adapted to cause said recording means to adjust the energy level of said write beam to said desired energy level.

6. The information recording system as claimed in claim 1, wherein said address codes and said auxiliary codes are arranged in said auxiliary signal such that there are codes at equidistant locations on said track, said address codes indicating distances, as measured in the track direction, between locations at which they are located and a specific reference position;

and said recording device further comprises;

synchronizing means for deriving a clock signal from said auxiliary signal being read, said clock signal being in synchronism with the codes at equidistant locations on said track;

a counter which counts in response to said clock signal; and

means responsive to said address codes extracted from said auxiliary signal to reset said counter in accordance with said address codes during reading of said auxiliary signal from said track.

7. The information recording system as claimed in claim 1 wherein said track is transversely modulated such that there is a periodic excursion of said track transverse to the track direction, said excursion having a frequency in conformity with said auxiliary signal;

said read means is adapted to detect said excursion and produce a corresponding frequency modulated detection signal; and

said recording device further comprises means for demodulating said detection signal to thereby recover said auxiliary signal.

8. The information recording system as claimed in claim 1, wherein said track portions are substantially concentric about a common center of rotation and, said address codes indicate the addresses of said track portions in relation to a reference position which is at a predetermined radial distance from said center of rotation.

9. The information recording system as claimed in claim 1, wherein said recording device further comprises means for recording a table of contents on said track giving the address codes of track portions at which particular portions of said information signal are recorded;

and means for determining from said auxiliary codes read from said track the location of the track portion at which recording of said table of contents should occur.

10. The information recording system as claimed in claim 9, wherein said recording device further comprises means for recording a lead-out signal indicating the end of said information signal;

and means for determining from said auxiliary codes read from said track the location of the track portion at at which recording of said lead-out signal must commence in order to be completed before the end of said track.

11. The information recording system as claimed in claim 9, wherein said recording device further comprises means for recording a lead-out signal indicating the end of said information signal;

and means for determining from said auxiliary codes read from said track the location of the track portion at which recording of said lead-out signal must commence in order to be completed before the end of said track.

12. The information recording system as claimed in claim 1, characterized in that said auxiliary codes are distinguishable from said address codes in that said auxiliary codes comprise bit combinations which do not occur in said address codes.

13. A recording device, comprising:

read means for reading an auxiliary signal from a record carrier having a preformed recording track which is transversely modulated in accordance with said auxiliary signal, said auxiliary signal comprising;

(i) successive address codes specifying addresses of successive track portions at which said address codes are located; and

(ii) auxiliary codes, arranged among said address codes, specifying control data for use by the recording device, said auxiliary codes having identifying indicia which distinguishes them from said address codes;

extraction means for selectively extracting said address codes and said auxiliary codes from said auxiliary signal read from said record carrier;

recording means for recording an information signal on said track; and

control means for controlling said recording means in accordance with said control data specified by said auxiliary codes.

14. The recording device as claimed in claim 13, wherein said recording means is adapted to produce a write beam of radiation having an energy level for recording said information signal on said track;

said control data specifies a desired energy level for said write beam; and

said control means is adapted to cause said recording means to adjust the energy level of said write beam to said desired energy level.

15. The recording device as claimed in claim 13, wherein said address codes and said auxiliary codes are arranged in said auxiliary signal such that there are codes at equidistant locations on said track, said address codes indicating distances, as measured in the track direction, between locations at which they are located and a specific reference position;

and the recording device further comprises;

synchronizing means for deriving a clock signal from said auxiliary signal being read, said clock signal being in synchronism with the codes at equidistant locations on said track;

a counter which counts in response to said clock signal; and

means responsive to said address codes extracted from said auxiliary signal to reset said counter in accordance with said address codes during reading of said auxiliary signal from said track.

16. The recording device as claimed in claim 13, wherein said track is transversely modulated such that there is a periodic excursion of said track transverse to the track direction, said excursion having a frequency in conformity with said auxiliary signal;

said read means is adapted to detect said excursion and produce a corresponding frequency modulated detection signal; and

the recording device further comprises means for demodulating said detection signal to thereby recover said auxiliary signal.

17. The recording device as claimed in claim 13, further comprising means for recording a table of contents on said track giving the address codes of track portions at which particular portions of said information signal are recorded;

and means for determining from said auxiliary codes read from said track the location of the track portion at which recording of said table of contents should occur.

18. The recording device as claimed in claim 17, further comprising means for recording a lead-out signal indicating the end of said information signal;

and means for determining from said auxiliary codes read from said track the location of the track portion at which recording of said lead-out signal must commence in order to be completed before the end of said track.

19. The recording device as claimed in claim 13, further comprising means for recording a lead-out signal indicating the end of said information signal;

and means for determining from said auxiliary codes read from said track the location of the track portion at which recording of said lead-out signal must commence in order to be completed before the end of said track.

20. A record carrier having a preformed recording track which is transversely modulated in accordance with an auxiliary signal, said auxiliary signal comprising:

successive address codes specifying addresses of successive track portions at which said address codes are located; and

auxiliary codes, arranged among said address codes, specifying control data for use by a recording device in recording an information signal on said track, said auxiliary codes having identifying indicia which distinguishes them from said address codes.

21. The record carrier as claimed in claim 20, wherein said control data specifies a desired energy level for which a write beam of said recording device should be set in recording said information signal on said track.

22. The record carrier as claimed in claim 20, wherein said address codes and said auxiliary codes are arranged in said auxiliary signal such that there are codes at equidistant locations on said track, said address codes indicating distances, as measured in the track direction, between locations at which they are located and a specific reference position, whereby a clock signal can be derived from said auxiliary signal which is in synchronism with the codes at equidistant locations on said track.

23. The record carrier as claimed in claim 22, wherein said address codes include absolute time codes specifying said distances as playing time of said record carrier from said reference position.

24. The record carrier as claimed in claim 20, wherein said track is transversely modulated such that there is a periodic excursion of said track transverse to the track direction, said excursion having a frequency in conformity with said auxiliary signal.

25. The record carrier as claimed in claim 20, wherein said track portions are substantially concentric about a common center of rotation, and said address codes indicate the addresses of said track portions in relation to a reference position which is at a predetermined radial distance from said center of rotation.

26. The record carrier as claimed in claim 25, wherein said auxiliary codes specify a track portion at a radial distance from said reference position at which a table of contents should be recorded on said record carrier.

27. The record carrier as claimed in claim 26, wherein the track portion at which the table of contents should be recorded is closer to said center of rotation than is said reference position.

28. The record carrier as claimed in claim 25, wherein said auxiliary codes specify a track portion at a radial distance from said reference position at which a lead-out signal indicating the end of said information signal must commence in order to be completed before the end of said track.

29. The record carrier as claimed in claim 20, wherein said auxiliary codes specify the location of the track portion at which a table of contents should be recorded on said record carrier.

30. The record carrier as claimed in claim 29, wherein said auxiliary codes also specify the location of the track portion at which a lead-out signal indicating the end of said information signal must commence in order to be completed before the end of said track.

31. The record carrier as claimed in claim 20, wherein said auxiliary codes specify the location of the track portion at which a lead-out signal indicating the end of said information signal must commence in order to be completed before the end of said track.

32. The record carrier as claimed in claim 20, wherein said address codes and said auxiliary codes have the same data format.

33. The record carrier as claimed in claim 32, wherein said auxiliary codes are distinguished from said address codes in that said auxiliary codes comprise bit combinations which do not occur in said address codes.

34. The record carrier as claimed in claim 20, wherein said auxiliary codes are distinguished from said address codes in that said auxiliary codes comprise bit combinations which do not occur in said address codes.