Claims
- 1. A magnetic tape cassette includes a housing, at least one spool with magnetic tape and an electronic storage device, wherein, when the magnetic tape cassette is arranged in a recording and/or reproduction equipment, the storage device is connectable thereto by a signal transmitting means and can be controlled by means of a data processing and control circuit for evaluating the stored items of information and wherein unalterable items of data, which characterize the cassette and the magnetic tape contained therein themselves or the parameters thereof, are written into a first subsection of the storage device and a second subsection of the storage device contains items of data which are dependent on the items of information stored on the magnetic tape, the storage device comprising:
- (a) in the case of a blank magnetic tape cassette and during a first recording on the magnetic tape, items of data can be written once into the second subsection of the storage device where partitioning and utilization of a further recordable subsection of the storage device is defined and wherein the further subsection is provided for the storage of items of information regarding the starting and end points of the recordings and also contains items of control data for controlling a data processing and/or control device of the recording and/or reproduction equipment for selective blocking of operational modes of the recording and/or reproduction equipment; and
- (b) in the case of a prerecorded magnetic tape cassette, the second subsection of the storage device contains items of information regarding the identity of, and/or an authorization for reproduction from the magnetic tape cassette, the items of information may be, compared with data recorded in a subcode part of the signal recorded on the magnetic tape, the recorded subcode has at least one alteration at a predetermined tape location, which when compared with the items of information control the data processing and/or control device of the recording and/or reproduction equipment to selectively block an operational mode until the control data in the storage device is altered, a further subsection contains items of information regarding the starting and end points of the recordings.
- 2. An apparatus for recording and reproducing signals stored on a magnetic tape cassette comprising:
- a transmitting and receiving means for communicating with said magnetic tape cassette to facilitate reading from and writing information from a memory device contained therewith;
- a subcode separating means for separating said subcode from a wanted information signal recorded on said magnetic tape cassette;
- a data processing device for receiving said information from said transmitting and receiving means and said subcode from said separating means; and,
- an operational mode controller coupled to said data processing circuit for controlling an operational mode of said reproducing apparatus,
- wherein said information from said memory device and said subcode are compared by said data processing device and substantial equality of said information and said subcode cause said operational mode controller to enable an operational mode of said reproducing apparatus and a dissimilarity of other than an least significant bit between said information and said subcode cause said operational mode controller to block an operational mode of said reproducing apparatus.
Priority Claims (2)
Number |
Date |
Country |
Kind |
41 35 419 |
Oct 1991 |
DEX |
|
PCT/EP92/02399 |
Oct 1992 |
WOX |
|
CROSS REFERENCE TO RELATED APPLICATIONS
This is a continuation of U.S. application Ser. No. 08/211,999 filed Jul. 11, 1994.
US Referenced Citations (13)
Foreign Referenced Citations (4)
Number |
Date |
Country |
2943409 |
|
DEX |
63-136379 |
|
JPX |
1-162286 |
|
JPX |
62-157391 |
Jul 1987 |
JPX |
Continuations (1)
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Number |
Date |
Country |
Parent |
211999 |
Jul 1994 |
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