US 12,339,966 B2
Method and computer system for clearing possible malware from electronic documents
Friedrich Hartl, Vienna (AT)
Appl. No. 18/709,965
Filed by Friedrich Hartl, Vienna (AT)
PCT Filed Nov. 16, 2021, PCT No. PCT/AT2021/060433
§ 371(c)(1), (2) Date May 14, 2024,
PCT Pub. No. WO2023/081938, PCT Pub. Date May 19, 2023.
Claims priority of application No. A 50910/2021 (AT), filed on Nov. 15, 2021.
Prior Publication US 2024/0427893 A1, Dec. 26, 2024
Int. Cl. G06F 21/56 (2013.01)
CPC G06F 21/567 (2013.01) [G06F 21/565 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A computer-implemented method for clearing possible malware from electronic documents, comprising:
receiving, without opening, an electronic original document on a control computer from an insecure source from the Internet and/or from outside a local network that includes the control computer, wherein receiving the electronic document does not involve scrolling or recognizing text in the electronic original document;
transmitting the electronic original document from the control computer to a display computer of an isolated system, via an interface or a data line that only sends data in one direction;
opening the electronic original document on the display computer to determine document content, wherein opening the electronic document involves scrolling or recognizing text in the electronic document;
transmitting the document content of the electronic original document via a display signal from the display computer to the control computer; and
the control computer creating an electronic document copy from the display signal.