Data processing apparatus

1 . A data processing apparatus comprising:

a storage unit for storing data; and

a control unit capable of performing operations of:

receiving data;

storing the received data;

processing the data stored in the storage unit;

invalidating the data stored in the storage unit;

judging whether or not the received data satisfies a predetermined condition; and

prohibiting an invalidation of the data if the data is judged to satisfy the predetermined condition.

2 . The data processing apparatus according to claim 1 , further comprising a second storage unit for storing information relevant to the data which was judged to satisfy the predetermined condition.

3 . The data processing apparatus according to claim 1 , wherein

the storage unit includes a temporary storage unit for temporarily storing the received data, and

an archive unit for retaining data which is prohibited from being invalidated.

4 . The data processing apparatus according to claim 1 , further comprising the control unit capable of performing an operation of:

giving notification that the invalidation of the data has been prohibited.

5 . The data processing apparatus according to claim 1 , further comprising the control unit capable of performing an operation of:

restricting the processing of the data, if the received data is judged to be predetermined specific data.

6 . The data processing apparatus according to claim 1 , further comprising the control unit capable of performing operations of:

receiving an operation of a user;

identifying output authority to output data which was judged to satisfy the predetermined condition, if a specific operation is received; and

outputting the data when the output authority was identified.

7 . The data processing apparatus according to claim 6 , further comprising the control unit capable of performing operations of:

displaying the data stored in the storage unit as an image; and

recording the data stored in the storage unit as an image on a record carrier.

8 . The data processing apparatus according to claim 6 , wherein

a plurality of types of output authority is identified, and an output method for the data is specified, according to the type of identified output authority.

9 . The data processing apparatus according to claim 6 , wherein

information relevant to data which was judged to be data satisfying the predetermined condition is outputted in association with the data.

10 . The data processing apparatus according to claim 8 , wherein

reproducibility of the data is restricted when outputting the data, according to the type of identified output authority.

11 . A data processing apparatus comprising:

data receiving means for receiving data;

storing means for storing the data received by the data receiving means;

processing means for processing the data stored in the storing means;

invalidating means for invalidating the data stored in the storing means;

judging means for judging whether or not the data received by the data receiving means satisfies a predetermined condition; and

prohibiting means for prohibiting the invalidating means from invalidating the data if the judging means judges that the data satisfies the predetermined condition.

12 . The data processing apparatus according to claim 11 , further comprising second storing means for storing information relevant to data which was judged to satisfy the predetermined condition by the judging means.

13 . The data processing apparatus according to claim 11 , wherein

the storing means includes a temporary storage unit for temporarily storing the data received by the data receiving means, and

an archive unit for retaining data which is prohibited from being invalidated by the prohibiting means.

14 . The data processing apparatus according to claim 11 , further comprising notifying means for giving notification that the prohibiting means has prohibited the invalidation of the data.

15 . The data processing apparatus according to claim 11 , further comprising restricting means for restricting the processing of the data performed by the processing means, if the judging means judges that the data received by the data receiving means is predetermined specific data.

16 . The data processing apparatus according to claim 11 , further comprising:

operation receiving means for receiving an operation of a user;

identifying means for identifying output authority to output data which was judged to satisfy the predetermined condition by the judging means, if the operation receiving means receives a specific operation; and

outputting means for outputting the data when the identifying means identified the output authority.

17 . The data processing apparatus according to claim 16 , further comprising:

displaying means for displaying data as an image; and

recording means for recording data as an image on a record carrier,

wherein the outputting means outputs the data stored in the storing means to the displaying means or the recording means.

18 . The data processing apparatus according to claim 16 , wherein

the identifying means identifies a plurality of types of output authority, and the outputting means specifies an output method for the data, according to the type of output authority identified by the identifying means.

19 . The data processing apparatus according to claim 16 , wherein

the outputting means outputs information relevant to data which was judged to be data satisfying the predetermined condition by the judging means in association with the data.

20 . The data processing apparatus according to claim 18 , wherein

the outputting means restricts reproducibility of the data when outputting the data, according to the type of output authority identified by the identifying means.