Data bus memory circuit

Data carrier and apparatus for optically reading digital...

Data carrier for optical read-out

Data carrier having an optically variable element and...

Data carrier optically readable by transmission/via surface...

Data carrier storage system

Data cartridge library

Data cartridge library system

Data clock separator with missing clock detect

Data collecting grid and kit for computer

Data conversion apparatus and method in copyright protecting...

Data copy-protecting system for creating a copy-secured...

Data copying system, data copying apparatus, data copying...

Data demodulation system

Data destruction preventing method, recording apparatus...

Data disc and method for retrieving data recorded on data disc

Data disc optical reader containing a device for automatic...

Data displaying system including signal reception and/or...

Data editing display

Data encoding method and system employing two-thirds code...