EP 0194660 A3 19870429 - ELECTRONIC POSTAGE METER HAVING A MEMORY MAP DECODER AND AN ILLEGAL-MEMORY-ACCESS WARNING SIGNAL, RESPECTIVELY
Title (en)
ELECTRONIC POSTAGE METER HAVING A MEMORY MAP DECODER AND AN ILLEGAL-MEMORY-ACCESS WARNING SIGNAL, RESPECTIVELY
Publication
Application
Priority
- US 71079985 A 19850312
- US 71080085 A 19850312
Abstract (en)
[origin: EP0194660A2] An electronic postage meter having an improved memory selection circuit (CPU) is disclosed. A custom memory map decoder circuit which resolution down to a single byte location is used to provide selection enabling signals to insure the selection of an appropriate device only when the addresses appropriate to that device are communicated. A warning signal is provided whenever an attempt is made to access an illegal or unused address.
IPC 1-7
IPC 8 full level
G07B 17/00 (2006.01)
CPC (source: EP)
G07B 17/00362 (2013.01); G07B 2017/00258 (2013.01); G07B 2017/00403 (2013.01)
Citation (search report)
- US 3978457 A 19760831 - CHECK JR FRANK T, et al
- GB 2101370 A 19830112 - PHILIPS ELECTRONIC ASSOCIATED [GB]
- US 3938095 A 19760210 - CHECK JR FRANK T, et al
Designated contracting state (EPC)
CH DE FR GB IT LI NL
DOCDB simple family (publication)
EP 0194660 A2 19860917; EP 0194660 A3 19870429; EP 0194660 B1 19920325; DE 3684496 D1 19920430
DOCDB simple family (application)
EP 86103281 A 19860312; DE 3684496 T 19860312