Chip card for video and audio information - has programmable memory that can be read into and out with built in circuits for conversion

摘要

The 'smart' card (LK) has a memory section (SB) that is used for the storage of digitised audio and/or video information. Access control units (ZE1,ZE2) are provided that allow the stored data to be read, entered into a buffer and played back acoustically or visually. One unit (ZE1) receives the video/audio input (ai') and this is converted (UM) and compressed (KM) before being received by the programming unit (PM). The reader (LM) transfers data to stages to convert the signal to the required form for output. The card memory is of a RAM type. ADVANTAGE - Expands range of application of cards.