Patent ID: 11955101
Assignee: RENESAS ELECTRONICS CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A display control device which performs wireless communication with an external apparatus and displays an image in accordance with input information on a display apparatus, the display control device comprising:
a wireless control unit configured to i) transmit the input information to the external apparatus via the wireless communication and ii) cause the external apparatus to draw a first image in accordance with the input information;
a first unit including an image reproduction unit and a decoder, wherein the image reproduction unit is configured to acquire, via the wireless communication, the first image encoded after being drawn by the external apparatus, the decoder is configured to decode the acquired first image, and wherein the first unit is configured to display the first image on the display apparatus;
a second unit including a drawing control unit and a Graphics Processing Unit (GPU), wherein the drawing control unit is configured to output a drawing start instruction based on the input information, wherein the GPU is configured to draw a second image in response to the drawing start instruction, and wherein the second unit is configured to display the second image drawn by the GPU on the display apparatus; and
a switching unit which is configured to determine whether a received radio wave is in a good state or a bad state, select the first unit when a determination result is that the received radio wave is in the good state, and select the second unit when the determination result is that the received radio wave is in the bad state,
wherein the decoder of the first unit is configured to output a decode end notification when decoding of the first image is completed,
wherein the drawing control unit is configured to output the drawing start instructions to the GPU even when the first unit is selected by the switching unit, and
wherein, when the first unit is selected by the switching unit, the GPU of the second unit is configured to 1) ignore the drawing start instruction from the drawing control unit and 2) output a drawing end notification to the drawing control unit in response to i) ignoring the drawing start instruction from the drawing control unit and ii) receiving the decode end notification from the decoder.