Information carrier comprising access information and dummy information
AssigneeKoninklijke Philips Electronics N.V.
InventorsAalbert Stek, Martinus Wilhelmus Blum, Bart Van Rompaey
Life of this patent
Estimating the term…
Abstract
An information carrier for holding user information includes access information for accessing the user information, the access information being stored in a pre-determined first region on the information carrier. The information carrier further includes at least one further region different from the first region, the further region comprising dummy information.
Claims43
An information carrier for holding user information, the information carrier comprising access information for accessing the user information, the access information being stored in a pre-determined first region on the information carrier, wherein the information carrier further comprises at least one further region different from the first region, the at least one further region comprising dummy information for avoiding a difference in noise level between the pre-determined first region and the at least one further region.
An apparatus for reading out information from an information carrier, the apparatus comprising:
- a reading unit for reading out user information and access information from the information carrier;
- and
- access control means for providing access to the user information in dependence on the access information;
- wherein the access information are stored in a pre-determined first region on the information carrier, and wherein dummy information are stored in at least one further region for avoiding a difference in noise level between the pre-determined first region and the at least one further region.
An information carrier comprising:
- a user region for storing user information;
- a first region for storing access information for accessing the user information;
- and
- a second region different from the first region, the second region comprising dummy information to avoid a difference in noise level between the first region and the second region.
A method of reducing a noise difference between regions of an information carrier comprising the acts of:
- storing user information in a user region of the information carrier;
- storing access information in a first region for accessing the user information;
- and
- storing dummy information in a second region different from the first region to avoid the noise difference between the first region and the second region.
The information carrier, for holding user information, the information carrier comprising:
- access information for accessing the user information, the access information being stored in a pre-determined first region on the information carrier, wherein the access information is stored on the information carrier in a variation of a parameter, which variation is detectable by integration detection, and
- at least one further region different from the first region, the further region comprising dummy information, and
- wherein the access information is stored on the information carrier according to a pre-determined format, wherein the dummy information is stored on the information carrier according to the same or similar format.
Dependencies are inferred from the claim text.