DISPLAY CONTROL METHOD AND APPARATUS, AND TERMINAL DEVICE

1 . A display control method, applied to a display, wherein the display comprises a backlight unit, a panel, and a first control unit, the display has a first display mode and a second display mode, the first display mode is displaying image information by using the backlight unit, the second display mode is displaying the image information by using the backlight unit and the panel, and the method comprises:

receiving, by the first control unit, a first status message, wherein the first status message indicates that the panel does not work;

receiving a first image signal, wherein the first image signal is used to display first image information; and

displaying the first image information in the first display mode based on the first status message.

2 . The method according to claim 1 , wherein before the receiving a first image signal, the method further comprises:

sending the first status message to a second control unit; and

the receiving a first image signal comprises:

receiving the first image signal generated by the second control unit based on the first status message.

3 . The method according to claim 1 , wherein the method further comprises:

receiving, by the first control unit, a second status message, wherein the second status message indicates that the panel works;

receiving a second image signal, wherein the second image signal is used to display second image information; and

switching from the first display mode to the second display mode based on the second status message, and displaying the second image information in the second display mode.

4 . The method according to claim 1 , wherein the first status message comprises one or more types of information indicating a panel fault, information indicating a driver chip fault of the display, information indicating a connector fault or a line fault of the display, or information indicating that a battery level is lower than or equal to a preset power level.

5 . The method according to claim 1 , wherein the first status message comprises a first user instruction, and the first user instruction indicates to switch to the first display mode.

6 . The method according to claim 1 , wherein the first image information comprises one or more types of vehicle speed information, gear information, or steering light information.

7 . A display control apparatus, wherein a first display mode and a second display mode are implemented by using the apparatus, the first display mode is performing display by using a backlight unit, the second display mode is displaying the image information by using the backlight unit and a panel, and the apparatus comprises:

a receiving unit, configured to receive a first status message, wherein the first status message indicates that the panel does not work, and

the receiving unit is further configured to receive a first image signal, wherein the first image signal is used to display first image information; and

a first control unit, configured to display the first image information in the first display mode based on the first status message.

8 . The apparatus according to claim 7 , wherein the apparatus further comprises:

a sending unit, configured to send the first status message to a second control unit before the receiving unit receives the first image signal; and

the receiving unit is specifically configured to receive the first image signal generated by the second control unit based on the first status message.

9 . The apparatus according to claim 7 , wherein the receiving unit is further configured to receive a second status message, wherein the second status message indicates that the panel works;

the receiving unit is further configured to receive a second image signal, wherein the second image signal is used to display second image information; and

the first control unit is further configured to switch from the first display mode to the second display mode based on the second status message, and display the second image information in the second display mode.

10 . The apparatus according to claim 7 , wherein the first status message comprises one or more types of information indicating a panel fault, information indicating a driver chip fault of the display, information indicating a connector fault or a line fault of the display, or information indicating that a battery level is lower than or equal to a preset power level.

11 . The apparatus according to claim 7 , wherein the first status message comprises a first user instruction, and the first user instruction indicates to switch to the first display mode.

12 . The apparatus according to claim 7 , wherein the first image information comprises one or more types of vehicle speed information, gear information, or steering light information.

13 . A display control apparatus, comprising:

a receiving unit, configured to receive a first status message, wherein the first status message indicates that a panel does not work; and

a sending unit, configured to send a first image signal and first indication information to a display based on the first status message, wherein the first image signal is used to display first image information, the first indication information indicates the display to display the first image information in a first display mode, and the first display mode is performing display by using a backlight unit.

14 . The apparatus according to claim 13 , wherein the apparatus further comprises:

a generation unit, configured to generate the first image signal based on the first status message before the sending unit sends the first image signal to the display.

15 . The apparatus according to claim 13 , wherein the receiving unit is further configured to receive a second status message, wherein the second status message indicates that the panel works; and

the sending unit is further configured to send a second image signal and second indication information to the display based on the second status message, wherein the second indication information indicates the display to switch from the first display mode to a second display mode, and the second display mode is displaying the image information by using the backlight unit and the panel.

16 . The apparatus according to claim 13 , wherein the first status message comprises one or more types of information indicating a panel fault, information indicating a driver chip fault of the display, information indicating a connector fault or a line fault of the display, or information indicating that a battery level is lower than or equal to a preset power level.

17 . The apparatus according to claim 13 , wherein the first status message comprises a first user instruction, and the first user instruction indicates to switch to the first display mode.