Patent ID: 7436415
Filing Date: 2008-10-14
Classification: G09G,H04N

Abstract:
1. A display system comprising: a display panel; a signal processing apparatus that is connected to the display panel in a detachable manner, processes an externally input video signal, and supplies the processed video signal to the display panel; and an OSD circuit provided in the display panel or the signal processing apparatus, the OSD circuit generating a signal for displaying a common menu screen, the common menu screen being provided with common selectable options for the display panel to allow a user to set screen conditions of the display panel including a backlight's reference illuminance; wherein the display panel includes a memory section for storing ID information, which includes the information about the type of a device constituting the display panel, and a transmitter section for transmitting the ID information stored in the memory section to the signal processing apparatus; and wherein the signal processing apparatus includes a control circuit that receives the ID information transmitted from the display panel, determines the type of a device constituting the display panel from the received ID information, and transmits a control signal to the display panel in accordance with the determination result; and wherein the control circuit, in case the ID information received indicates that the display panel to which the signal processing apparatus is connected is an LCD panel, transmits the control signal for exercising illuminance control of a backlight of the LCD panel to the LCD panel, controls so as to generate the signal of the common menu screen, the common menu screen being provided with the common selectable options for the display panel and enabling setting of the common selectable options including an option to allow the user to set a backlight's condition of the LCD panel, and makes the LCD panel display the common menu screen, and in case the ID information indicates that the display panel to which the signal processing apparatus is connected is a display panel except an LCD panel, ceases transmitting the control signal for exercising illuminance control of the backlight, controls so as to generate the signal of the common menu screen, the common menu screen being provided with the common selectable options for the display panel and disabling by graying out, setting of the option to allow the user to set the backlight's condition of the LCD panel while enabling setting of other common selectable options, and makes other display panel except the LCD panel display the common menu screen.