Control system and electronic apparatus

Patent metadata

Field	Value
Publication number	US-12210426-B2
Application number	US-202217901079-A
Country	US
Kind code	B2
Filing date	Sep 1, 2022
Priority date	Sep 6, 2021
Publication date	Jan 28, 2025
Grant date	Jan 28, 2025

Abstract

A control system includes: an image processing circuit; a first error detection circuit configured to perform first error detection on second image data; a first error code value generation circuit configured to generate a first error code value based on the second image data; a transmission interface circuit; a reception interface circuit; a second error code value generation circuit configured to generate a second error code value based on the second image data; a second error detection circuit configured to perform second error detection based on the first error code value and the second error code value; and a control circuit configured to output a control signal when an error is detected in at least one of the first error detection and the second error detection.

First claim

What is claimed is:

1. A control system configured to control a head-up display, comprising:
an image processing circuit configured to perform mapping processing to map input first image data to second image data to be projected onto a projection surface of the head-up display;
a first error detection circuit configured to perform first error detection on the second image data;
a first error code value generation circuit configured to generate a first error code value based on the second image data;
a transmission interface circuit configured to transmit the second image data;
a reception interface circuit configured to receive the second image data transmitted by the transmission interface circuit;
a second error code value generation circuit configured to generate a second error code value based on the second image data received by the reception interface circuit;
a second error detection circuit configured to perform second error detection on the second image data received by the reception interface circuit, based on the first error code value and the second error code value; and
a control circuit configured to output a control signal for turning off projection of light onto the projection surface when an error is detected in at least one of the first error detection and the second error detection,
wherein the second error detection relates to a property with respect to a communication of the second image data between the transmission interface circuit and the reception interface circuit.

2. The control system according to claim 1 , wherein
the first error detection circuit is configured to
obtain, based on the second image data, a glare index value being an index value indicating glare of the head-up display, and perform the first error detection based on the glare index value.

3. The control system according to claim 1 , wherein
the first error detection circuit is configured to
convert the second image data into third image data by inverse mapping processing of the mapping processing, and
perform the first error detection by comparing the first image data with the third image data.

4. The control system according to claim 1 , further comprising:
a first circuit device including the image processing circuit, the first error detection circuit, the first error code value generation circuit, and the transmission interface circuit; and
a second circuit device including the reception interface circuit and the second error code value generation circuit.

5. The control system according to claim 1 , further comprising:
a third error detection circuit, wherein
the image processing circuit includes:
a storage circuit storing the first image data; and
an image conversion circuit configured to perform the mapping processing to map the first image data stored in the storage circuit to the second image data,

the image conversion circuit is configured to
output a reference coordinate indicating a pixel position on the first image data, and output the second image data based on pixel data of the reference coordinate read from the storage circuit based on the output reference coordinate,

the third error detection circuit is configured to
perform third error detection on the reference coordinate output by the image conversion circuit, and

the control circuit is configured to
output the control signal when an error is detected in at least one of the first error detection, the second error detection, and the third error detection.

6. The control system according to claim 1 , wherein
the control circuit is configured to output the control signal for turning off a light source of the head-up display.

7. The control system according to claim 1 , further comprising:
a mask circuit configured to perform mask processing on the second image data before being transmitted by the transmission interface circuit based on the control signal.

8. The control system according to claim 1 , further comprising:
a mask circuit configured to perform mask processing on the second image data received by the reception interface circuit based on the control signal.

9. An electronic apparatus, comprising:
the control system according to claim 1 ; and
the head-up display.

10. The control system according to claim 1 , wherein
the first error detection relates to a property with respect to a relationship between the second image data and the head-up display.

Assignees

• Seiko Epson Corp

Inventors

• Akiba Yasutoshi
• Eric jeffrey

Classifications

• G06F11/1004

  to protect a block of data words, e.g. CRC or checksum (G06F11/1076 takes precedence; security arrangements for protecting computers or computer systems against unauthorized activity G06F21/00) · CPC title

• B60K35/22

  Display screens · CPC title

• B60K35/50

  Instruments characterised by their means of attachment to or integration in the vehicle (B60K35/231 takes precedence) · CPC title

• B60K35/10

  Input arrangements, i.e. from user to vehicle, associated with vehicle functions or specially adapted therefor · CPC title

• B60K35/415

  Glare prevention · CPC title