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US 12,468,402 B2Granted
Secured KVM switching device with unidirectional communications
AssigneeFibernet Ltd.
InventorsShiri Menachem, Shlomo Groisman
Life of this patent
Estimating the term…
Abstract
A Secured Keyboard Video and Mouse (SKVM) system for selectively controlling a plurality of individual computers by a single set comprising a keyboard, a pointing device and at least one video monitor (in some cases, can be controlled also by computer), the SKVM comprising separate electrical circuits for transmitting the display sources, the pointing device and keyboard communications.
Claims12
A Keyboard Video and Mouse (KVM) communication system, comprising:
- a host computer emulator configured to receive at least one peripheral device signal from at least one respective peripheral device, and to receive Extended Display Identification Data (EDID) information from a display device;
- a first unidirectional data connection adapted to transmit the peripheral device signals and the EDID information from the host computer emulator to a device emulator, wherein said device emulator is associated with a host computer and is adapted to transmit the peripheral device signals and the EDID information to the host computer;
- a video connection adapted to connect to a video interface of the host computer and to transmit a video stream from said host computer to said display device through a second unidirectional data connection;
- and
- a video setting unit configured to:
- (i) in a first connection mode, (x) disconnect from a Display Data Channel (DDC) of the host computer and connect to said device emulator, to receive and store said EDID information transmitted through said first unidirectional data connection from said display device, and (y) disconnect said video connection via a first relay, and
- (ii) in a second connection mode, disconnect from said device emulator and connect to said DDC of said host computer, to enable said host computer to read said EDID setting data.
4 more elements
A method for operating a Keyboard Video and Mouse (KVM) communication system, comprising:
- providing a KVM communication system, comprising:
- a host computer emulator configured to receive at least one peripheral device signal from at least one respective peripheral device, and to receive Extended Display Identification Data (EDID) information from a display device;
- a first unidirectional data connection adapted to transmit the peripheral device signals and the EDID information from the host computer emulator to a device emulator, wherein said device emulator is associated with a host computer and is adapted to transmit the peripheral device signals and the EDID information to the host computer;
- a video connection adapted to connect to a video interface of the host computer and to transmit a video stream from said host computer to said display device through a second unidirectional data connection;
- and
- a video setting unit configured to:
- (i) in a first connection mode, (x) disconnect from a Display Data Channel (DDC) of the host computer and connect to said device emulator, to receive and store said EDID information transmitted through said first unidirectional data connection from said display device, (y) disconnect said video connection via a first relay, and
- (ii) in a second connection mode, disconnect from said device emulator and connect to said DDC of said host computer, to enable said host computer to read said EDID setting data;
- connecting at least one peripheral device and a display device to said host computer emulator;
- connecting a host computer to said device emulator;
- operating said video setting unit in said first connection mode, to receive and store said EDID information transmitted through said first unidirectional data connection from said display device;
- and
- operating said video setting unit in said second connection mode, to enable said host computer to read said EDID setting data.
10 more elements
Dependencies are inferred from the claim text.