Signal processing device and display apparatus for vehicle including the same

A signal processing device comprising:

• a processor configured to perform signal processing for a first display and a second display that are configured to be located in a vehicle, wherein:
• the processor is configured to execute first, second, and third virtual machines on a hypervisor in the processor,
• the second virtual machine is configured to be operated for the first display,
• the third virtual machine is configured to be operated for the second display,
• the first virtual machine is configured to generate a virtual overlay and transmit the virtual overlay to the second virtual machine or the third virtual machine,
• the second virtual machine or the third virtual machine is configured to, based on the virtual overlay being displayed on the first display or the second display, change at least one of a layer sequence or a display area of the virtual overlay using a shared memory based on the hypervisor,
• the first virtual machine includes an output server interface for data communication with the second virtual machine and the third virtual machine, and
• the second virtual machine includes an input and output client interface for data communication with the first virtual machine.

A display apparatus for vehicle, the display apparatus comprising:

• a first display;
• a second display;
• and
• a signal processing device comprising a processor configured to perform signal processing for the first display and the second display, wherein:
• the processor is configured to execute first, second, and third virtual machines on a hypervisor in the processor,
• the second virtual machine is configured to be operated for the first display,
• the third virtual machine is configured to be operated for the second display, and
• the first virtual machine is configured to:
• generate a virtual overlay,
• change at least one of a layer sequence or a display area of the virtual overlay, and
• transmit, to the second virtual machine or the third virtual machine, the changed virtual overlay or information regarding the changed virtual overlay for displaying the changed virtual overlay on the first display or the second display using a shared memory based on the hypervisor,
• the first virtual machine includes an output server interface for data communication with the second virtual machine and the third virtual machine, and
• the second virtual machine includes an input and output client interface for data communication with the first virtual machine.