Abstract: A system of personal data spaces (PDB) utilizing known storage spaces is characterized by the fact that it consists of the sum of unitary personal data spaces, each of which comprises the owner (P) of the unitary personal data space (UPDB) and the storage space (S) of the owner (P) of the unitary personal data space (UPDB), wherein each storage space (S) contains individually encrypted data objects and the storage spaces of various unitary personal data spaces may be situated in one place or they may be distributed. The method of managing access to the personal data spaces is based on this, that the sole owner (P) of the unitary personal data space (UPDB), especially the individual entity whom the data concern and/of whose property they are, exercises the original right of access to the storage space (S) through the granting or withdrawal of access licenses (L) to data objects (0) in the storage space (S).

Abstract: A system utilising known storage spaces (S), for example servers or Compact Disks, is characterised by the fact that the personal data base (PDB) consists of the sum of the unitary personal databases (UPDB1, UPDB2, UPDB3, UPDBx), each of which comprises the owner (P1, P2, P3, Px) of unitary personal data base (UPDB1, UPDB2, UPDB3, UPDBx) and the storage space (S1, S2, S3, Sx) of the owner (P1, P2, P3, Px) of the unitary personal data base (UPDB1, UPDB2, UPDB3, UPDBx), wherein each storage space contains individually encrypted data objects (O?, O?, O??, Oy), and the storage spaces (S1, S2, S3, Sx) of various unitary personal database (UPDB1, UPDB2, UPDB3, UPDBx) may be situated in one place or they may be distributed.

Abstract: A printer control apparatus provided with a CPU for converting video data supplied from an external unit to video data tailored to the operation of the printer; a memory holding various types of data during that conversion processing; and a read/write control unit performing the read/write control of the data between the memory, CPU, and the printer, which includes latch units which respectively latch the address and data from the CPU and thereby perform the processing at the minimum bus cycle. Also, the upper bit side of that address is made to include the control data from the CPU, and an autonomous read/write control is carried out. Further, that read/write control is carried out while using the video buffer comprising several standard size pages and by freely using that page.