Apparatus and method for determining erasability of data
AssigneeSony Corporation
InventorsTeppei Yokota, Nobuyuki Kihara
Life of this patent
Estimating the term…
Abstract
An apparatus for determining erasability of content data. The apparatus includes: a receiver configured to receive content data to be stored in a first storage medium; a comparator configured to compare a remaining storable capacity of the first storage medium with an amount of the received content data; a determining unit configured to determine whether first data already stored in the first storage medium is re-recordable by determining whether a copy of the first data is retrievable from the second storage medium; and a controller configured to control an erase process for the first data according to the comparison made by the comparator and the determination made by the determining unit.
Claims13
An apparatus, comprising:
- a receiver configured to receive content data to be stored in a first storage medium;
- a comparator configured to compare a remaining storable capacity of said first storage medium with an amount of the received content data;
- a determining unit configured to determine whether first data already stored in said first storage medium is re-recordable by determining whether a copy of the first data is retrievable from a second storage medium and determine whether a recording source identifier identifying the second storage medium is provided as additional information with the first data;
- and
- a controller configured to control an erase process for the first data according to the comparison made by said comparator and the determination made by said determining unit, and allow the erase process to erase the first data when the first data contains the recording source identifier, and preventing the erase process from erasing the first data when the first data does not contain the recording source identifier.
A method, comprising:
- receiving content data to be stored in a first storage medium;
- comparing a remaining storable capacity of said first storage medium with an amount of the received content data;
- determining whether first data already stored in said first storage medium is re-recordable by determining whether a copy of the first data is retrievable from a second storage medium and by determining whether a recording source identifier identifying the second storage medium is provided as additional information with the first data;
- and
- controlling an erase process for the first data according to said comparing and said determining and allowing the erase process to erase the first data when the first data contains the recording source identifier, and preventing the erase process from erasing the first data when the first data does not contain the recording source identifier.
Dependencies are inferred from the claim text.