Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
90 words
A method for accessing a selected group of data which is stored on a machine readable storage medium, comprising: assigning a first identifying designation to the storage medium; assigning a second identifying designation to a machine which can read the storage medium; assigning a third identifying designation to the selected group of data; obtaining an access code which is a function of the first, second and third identifying designations; inputting the access code into the machine; and processing the access code in the machine for generating the third identifying designation.
Claim 2
Independent Claim
90 words
A method for accessing a selected group of data which is stored on a machine readable storage medium, comprising: assigning a first identifying designation to the storage medium; assigning a second identifying designation to a machine which can read the storage medium; assigning a third identifying designation to the selected group of data; obtaining an access code which is a function of the first, second and third identifying designations; inputting the access code into the machine; and processing the access code in the machine for generating the third identifying designation.
Claim 3
Dependent Claim
17 words
A method as defined in claim 1 wherein the second identifying designation is unique to the machine.
Claim 4
Dependent Claim
20 words
A method as defined in claim 1 wherein the third identifying designation is unique to the selected group of data.
Claim 5
Dependent Claim
41 words
A method as defined in claim 1 further comprising storing the first identifying designation in a machine readable form in the machine, and wherein said step of processing includes processing the access code as a function of the first identifying designation.
Claim 6
Dependent Claim
32 words
A method as defined in claim 1 wherein said step of processing includes deriving the third identifying designation as a function of the first and second identifying designations and the access code.
Claim 7
Dependent Claim
59 words
A method as defined in claim 1 wherein said step of obtaining an access code comprises: transmitting the first, second and third identifying designations to a central facility via a telephone link; at the central facility processing the identifying designations to derive the access code; and transmitting the derived access code from the central facility via the telephone link.
Claim 8
Dependent Claim
32 words
A method as defined in claim 1 wherein said step of obtaining an access code comprises modifying at least one of the first and second identifying designations according to a pseudorandom function.
Claim 9
Dependent Claim
31 words
A method as defined in claim 7 further comprising storing the first identifying designation in the machine and said step of processing the access code comprises again performing said modifying step.
Claim 10
Dependent Claim
94 words
A data processing system comprising: a data storage medium storing a plurality of groups of data and a machine readable first identifying designation which identifies the storage medium; a machine including: means for reading the storage medium, means storing a machine readable second identifying designation which identifies the machine, input means and a control unit connected for accessing data stored on said storage medium in response to inputting, via said input means, of a code uniquely associated with the first and second identifying designations and with at least one selected group of stored data.
Claim 11
Dependent Claim
94 words
A data processing system comprising: a data storage medium storing a plurality of groups of data and a machine readable first identifying designation which identifies the storage medium; a machine including: means for reading the storage medium, means storing a machine readable second identifying designation which identifies the machine, input means and a control unit connected for accessing data stored on said storage medium in response to inputting, via said input means, of a code uniquely associated with the first and second identifying designations and with at least one selected group of stored data.
Claim 12
Dependent Claim
58 words
A system as defined in claim 9 wherein the code contains a pseudorandomly generated number associated with a combination of the identifying designations and the at least one selected group of stored data, said control unit comprises decryption means for processing the pseudorandomly generated number to derive an identification of the at least one selected group of data.
Claim 13
Dependent Claim
15 words
A system as defined in claim 9 constituting a navigator for producing travel routing directions.