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US 2022/0035458 A1Published application
Secured kvm switching device with unidirectional communications
AssigneeFibernet Ltd.
InventorsShiri MENACHEM, Shlomo GROISMAN
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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.
Claims20
A Keyboard Video and Mouse (KVM) communication system, comprising:
- a host emulator (HE) module, configured to:
- (a) receive at least one peripheral device (PD) signal from at least one respective PD, (b) read a first version of Extended Display Identification Data (EDID) information from a first memory of at least one display device, and (c) manipulate the first version of EDID information to produce a second version of the EDID information;
- a first unidirectional optical fiber data connection, adapted to transmit the PD signals and the second version of EDID information to one or more device emulators (DEs), via a single optical fiber communication channel;
- and
- a first manually controlled relay having at least two states;
- wherein the one or more DEs are each associated with at least one corresponding computer, and wherein the one or more DEs are configured to:
- transmit the at least one PD signal to a PD signal interface of the corresponding computer;
- store the second version of EDID information on a second memory device, associated with the relevant DE, based on a first state of the first manually controlled relay;
- and
- enable the corresponding computer to read the stored EDID information via a DDC connection of the corresponding computer, based on a second state of the first manually controlled relay.
7 more elements
A unidirectional KVM system, comprising:
- a device emulator configured to be connected to a keyboard interface and a pointing device interface of a computer, and a video connection designed to connect to a video interface of said computer, wherein:
- (i) said device emulator is configured to transmit keyboard communication signals and pointing device communication signals to said keyboard interface and pointing device interface, respectively,
- (ii) said device emulator is configured to receive keyboard communication signals from a user keyboard, pointing device communication signals from a user pointing device, and EDID setting data from a user display device, through a first unidirectional optical fiber data connection, and
- (iii) said video connection is configured to receive a video stream from said video interface of said computer and transmit said video stream through a second unidirectional optical fiber data connection;
- a controller-and-host-emulator configured to connect to said user keyboard and receive the user keyboard communication signals, and to connect to a user pointing device and receive the user pointing device communication signals;
- and a serial-to-parallel unit configured to transmit said video stream to said user display device;
- wherein:
- (i) said serial-to-parallel unit is configured to receive the video stream transmitted from said computer through said second unidirectional optical fiber data connection, and further transmit said video stream to the user display device, and
- (ii) said controller-and-host-emulator is configured to transmit said user keyboard and user pointing device communication signals to said device emulator through said first unidirectional optical fiber data connection.
6 more elements
A method to set a DDC setting in an HDMI connection of a computer, comprising:
- receiving an EDID setting table configured to set DDC settings in HDMI connection, from a user display device;
- receiving keyboard communication signals from a user keyboard and pointing device communication signals from a user pointing device;
- storing the received EDID setting table in a memory unit of a video setting unit, wherein said video setting unit is designed to be connected to DDC channel of the HDMI connection of the computer;
- transmitting the video stream to said user display device via the video interface of said computer, in accordance with the DDC setting transmitted to the computer, wherein the keyboard communication signals, pointing device communication signals and EDID setting table is received through a unidirectional optical fiber data connection from a controller and host emulator connected to the user display device.
1 more element
Dependencies are inferred from the claim text.