TWI765714B - Failure detection system automotive display - Google Patents

Abstract

A failure detection system for an automotive display includes a host computer, a processing unit connected to the host computer, and an automotive panel connected to the processing unit. The processing unit receives video data for the host computer. The processing unit has a display setting value. The processing unit outputs display data to the automotive panel according to the video data and the display setting value, such that the automotive panel displays an automotive image according to the display data. The failure detection system for the automotive display determines whether the display setting value is incorrect. When the failure detection system for the automotive display determines that the display setting value is incorrect, the processing unit corrects the display setting value.

Description

Vehicle Display Error Detection System

The present invention relates to an error detection system, and particularly to a vehicle display error detection system.

The use of liquid crystal display panels is becoming more and more popular, and is used in various life applications. If used in automotive panels, the images behind the vehicle can be displayed in real time, so that drivers can grasp the road conditions behind the vehicle. However, when the vehicle panel is abnormal, it will provide wrong information to the driver, thereby causing the risk of driving safety and even causing a car accident. Therefore, it is necessary to provide a vehicle display error detection system to solve the above problems.

The main purpose of the present invention is to provide a vehicle display error detection system, which can instantly detect whether the direction of the vehicle image displayed on the vehicle panel is reversed, and make corrections in real time, which is very helpful for driving safety.

To achieve the above object, the present invention provides a vehicle display error detection system including a vehicle host, a processing unit, and a vehicle panel. The processing unit is electrically connected to the vehicle host. The vehicle panel is electrically connected to the processing unit. The processing unit receives image data from the vehicle host. The processing unit has display settings. The processing unit outputs the display data to the vehicle panel according to the display setting value and the image data, so that the vehicle panel displays the vehicle image according to the display data. The vehicle host receives the display setting value from the processing unit and judges whether the display setting value is wrong. When the vehicle host determines that the display setting value is wrong, the vehicle host sends an instruction to the processing unit so that the processing unit corrects the display setting value.

To achieve the above purpose, the present invention further provides a vehicle display error detection system including a vehicle host, a processing unit, and a vehicle panel. The processing unit is electrically connected to the vehicle host. The vehicle panel is electrically connected to the processing unit. The processing unit receives image data from the vehicle host. The processing unit has display settings. The processing unit outputs the display data to the vehicle panel according to the display setting value and the image data, so that the vehicle panel displays the vehicle image according to the display data. The processing unit judges whether the display setting value is wrong. When the processing unit judges that the display setting value is wrong, the processing unit reports an error to the vehicle host and the processing unit corrects the display setting value.

In some embodiments, the processing unit determines whether the displayed setting value is wrong: when the displayed setting value is different from the target key value, it is determined that the displayed setting value is wrong. The way in which the processing unit corrects the display setting value is: correcting the display setting value with the target key value.

In some embodiments, the processing unit described above distributes the target key value in a plurality of blocks of the memory unit of the processing unit for storage.

In some embodiments, the processing unit further uses a protection algorithm to protect the target key value, and the protection algorithm uses a Cyclic Redundancy Check (CRC) method or an Error Correction Code (ECC) method.

In some embodiments, the processing unit further uses a protection algorithm to protect the display settings, and the protection algorithm uses a Cyclic Redundancy Check (CRC) method or an Error Correction Code (ECC) method.

To achieve the above purpose, the present invention further provides a vehicle display error detection system including a vehicle host, a processing unit, and a vehicle panel. The processing unit is electrically connected to the vehicle host. The vehicle panel is electrically connected to the processing unit. The processing unit receives the image data corresponding to the original image from the vehicle host to generate updated image data corresponding to the updated image, wherein the updated image is marked with words on the left and right sides of the original image. The processing unit has display settings. The processing unit outputs the display data to the vehicle panel according to the display setting value and the updated image data, so that the vehicle panel displays the vehicle image according to the display data.

In some embodiments, the driver can judge whether the displayed setting value is wrong according to the marking.

To achieve the above purpose, the present invention further provides a vehicle display error detection system including a vehicle host, a processing unit, and a vehicle panel. The processing unit is electrically connected to the vehicle host. The vehicle panel is electrically connected to the processing unit. The processing unit receives image data from the vehicle host. The processing unit has display settings. The processing unit outputs the display data to the vehicle panel according to the display setting value and the image data, so that the vehicle panel displays the vehicle image according to the display data. The processing unit forcibly replaces the display set value with the target key value.

In some embodiments, the vehicle panel is used for a rear view display, and the rear view display is an electronic rearview mirror, an electronic rearview mirror or a reversing display.

In order to make the above-mentioned features and advantages of the present invention more obvious and easy to understand, the following embodiments are given and described in detail with the accompanying drawings as follows.

Embodiments of the present invention are discussed in detail below. It should be appreciated, however, that the embodiments provide many applicable concepts that can be embodied in a wide variety of specific contexts. The discussed and disclosed embodiments are for illustration only, and are not intended to limit the scope of the present invention.

The vehicle display error detection system of the present invention is used for detecting whether the vehicle image displayed on the vehicle panel is reversed. The above-mentioned vehicle panel is used for the rear-view display of the vehicle, and the above-mentioned rear-view display of the vehicle is an electronic rear-view mirror, an electronic rear-view mirror, a reversing display, or a 360-degree surround view system for vehicles. For example, if the scanning direction of the left and right display of the electronic rear-view mirror is wrong, the driver will misjudge the oncoming car from the left rear as an approaching car from the right rear, and then drive the vehicle to the left, which may cause the driver to collide with the oncoming car from the left rear. car, resulting in a car accident. For example, if the scanning direction of the up and down display of the electronic rearview mirror is wrong, the driver will see the upside-down image, which makes it impossible to make a correct judgment, thereby causing a car accident. The main purpose of the present invention is to provide a vehicle display error detection system, which can instantly detect whether the vehicle image displayed on the vehicle panel is upside-down, and make corrections in real time, which is very helpful for driving safety.

The reason why the left and right display scanning directions of the above-mentioned electronic rearview mirrors are wrong is that the RL setting value of the display IC (referred to as "processing unit" in this paper) is electrically connected to the vehicle panel (referred to in this paper as "display"). The setting value" is called) error. The RL setting value can be determined by hardware pin or IC register. When the panel module is shipped from the factory, it will adjust a set of RL settings that are normally displayed, but it may damage the IC register and the host computer control at the front end of the vehicle panel due to Electrostatic Discharge (ESD). Errors, hardware control pin aging and other factors lead to the wrong RL setting value, which makes the left and right display scanning direction wrong, which causes the vehicle image displayed on the vehicle panel to be reversed in direction, reducing driving safety.

FIG. 1 is a schematic diagram of a vehicle display error detection system 100 according to a first embodiment of the present invention. The vehicle display error detection system 100 includes a vehicle host 120 , a processing unit 140 , and a vehicle panel 160 . The processing unit 140 is electrically connected to the vehicle host 120 . The vehicle panel 160 is electrically connected to the processing unit 140 . In an embodiment of the present invention, the processing unit is a display IC. In the embodiment of the present invention, the vehicle host is a host computer located at the front end of the display IC. In an embodiment of the present invention, the vehicle panel is used for a rear view display of a vehicle, such as an electronic rearview mirror, an electronic rearview mirror, a reversing display or a 360-degree surround view system for vehicles.

As shown in FIG. 1 , the processing unit 140 receives image data from the vehicle host 120 . The processing unit 140 has a display setting value (eg, a RL setting value that determines the left and right display scan directions of the rear view display, or another setting value that determines the upper and lower display scan directions of the rear view display). The processing circuit 142 of the processing unit 140 outputs the display data to the vehicle panel 160 according to the display setting value and the image data, so that the vehicle panel 160 displays the vehicle image according to the display data. Accordingly, the driver can grasp the road conditions behind the vehicle by viewing the vehicle image on the vehicle panel 160 .

In the first embodiment of the present invention, the processing circuit 142 of the processing unit 140 returns the display setting value to the vehicle host 120 , the vehicle host 120 receives the display setting value from the processing unit 140 , and the judging circuit 122 of the vehicle host 120 receives the display setting value from the processing unit 140 . It will be judged whether the display setting value is wrong.

In the first embodiment of the present invention, when the judgment circuit 122 of the vehicle host 120 judges that the display setting value is wrong, the vehicle host 120 will send an instruction to the processing unit 140, so that the processing unit 140 knows that the display setting value is wrong And correct the display setting value accordingly.

Specifically, in the first embodiment of the present invention, the vehicle display error detection system 100 will use the vehicle host 120 to determine whether the display setting value is wrong, and the vehicle host 120 will send a command when determining that the display setting value is wrong The processing unit 140 is notified, so that the processing unit 140 corrects the display setting value, so as to avoid the reverse direction of the vehicle image displayed on the vehicle panel 160, so as to ensure the driving safety.

FIG. 2 is a schematic diagram of a vehicle display error detection system 200 according to a second embodiment of the present invention. The vehicle display error detection system 200 includes a vehicle host 220 , a processing unit 240 , and a vehicle panel 260 . The processing unit 240 is electrically connected to the vehicle host 220 . The vehicle panel 260 is electrically connected to the processing unit 240 . As shown in FIG. 2 , the processing unit 240 receives image data from the vehicle host 220 . The processing unit 240 has display settings. The processing circuit 242 of the processing unit 240 outputs the display data to the vehicle panel 260 according to the display setting value and the image data, so that the vehicle panel 260 displays the vehicle image according to the display data. Accordingly, the driver can grasp the road conditions behind the vehicle by viewing the vehicle image on the vehicle panel 260 .

In the second embodiment of the present invention, the determination circuit 244 of the processing unit 240 determines whether the display setting value is wrong. When the judgment circuit 244 of the processing unit 240 judges that the display setting value is incorrect, the processing unit 240 will report an error to the vehicle host 220 and the processing unit 240 will correct the display setting value. Specifically, in the second embodiment of the present invention, the vehicle display error detection system 200 will use the processing unit 240 to determine whether the display setting value is wrong, and the processing unit 240 will correct the display setting value when it is determined that the display setting value is wrong , so as to avoid the opposite direction of the vehicle image displayed on the vehicle panel 260 to ensure driving safety.

In the second embodiment of the present invention, the judgment circuit 244 of the processing unit 240 judges whether the display setting value is wrong: when the display setting value is different from the target key value (golden key), it is judged that the display setting value is wrong; If the displayed setting value is the same as the target key value, it is judged that the displayed setting value is correct. In the second embodiment of the present invention, when the judging circuit 244 of the processing unit 240 judges that the display setting value is wrong, the processing unit 240 modifies the display setting value by: correcting the display setting value with the target key value (for example, with target key value instead of the display set value).

FIG. 3 is a schematic diagram of a vehicle display error detection system 300 according to a third embodiment of the present invention. The vehicle display error detection system 300 includes a vehicle host 320 , a processing unit 340 , and a vehicle panel 360 . The processing unit 340 is electrically connected to the vehicle host 320 . The vehicle panel 360 is electrically connected to the processing unit 340 . As shown in FIG. 3 , the processing unit 340 receives image data from the vehicle host 320 . The processing unit 340 has display settings. The processing circuit 342 of the processing unit 340 outputs the display data to the vehicle panel 360 according to the display setting value and the image data, so that the vehicle panel 360 displays the vehicle image according to the display data. Accordingly, the driver can grasp the road conditions behind the vehicle by viewing the vehicle image on the vehicle panel 360 . The difference between the vehicle display error detection system 200 of the second embodiment shown in FIG. 2 and the vehicle display error detection system 300 of the third embodiment shown in FIG. 3 lies in the processing of the vehicle display error detection system 200 The unit 240 uses a protection algorithm to protect the target key value (to be described in detail below), while the processing unit 340 of the vehicle display error detection system 300 uses a protection algorithm to protect the display setting value (to be described in detail below). Of).

In the third embodiment of the present invention, the determination circuit 344 of the processing unit 340 determines whether the display setting value is wrong. When the judgment circuit 344 of the processing unit 340 judges that the display setting value is incorrect, the processing unit 340 will report an error to the vehicle host 320 and the processing unit 340 will correct the display setting value. Specifically, in the third embodiment of the present invention, the vehicle display error detection system 300 will use the processing unit 340 to determine whether the display setting value is wrong, and the processing unit 340 will correct the display setting value when it is determined that the display setting value is wrong , so as to avoid the opposite direction of the vehicle image displayed on the vehicle panel 360 to ensure driving safety.

FIG. 4 is a flow chart of judging whether the display setting value is wrong and correcting the display setting value according to an embodiment of the present invention. As shown in Figure 4, the display setting value will be continuously confirmed and verified after power on (detecting whether the display setting value is wrong). If the wrong display setting value is detected, the display setting value will be corrected.

In the embodiment of the present invention, the target key value is the target key value pre-written by the developer, the purpose of which is that if the displayed setting value is wrong, it can be used as a basis for correcting the displayed setting value.

In the embodiment of the present invention, in order to prevent electrostatic discharge (ESD) from destroying the target key value, the processing unit may also distribute the target key value in multiple blocks of the memory unit of the processing unit for storage, so as to achieve the protection target The purpose of the key value.

In the embodiment of the present invention, in order to prevent electrostatic discharge (ESD) from destroying the target key value, the processing unit can further use a protection algorithm to protect the target key value (as shown in FIG. 2 ), wherein the protection algorithm can use Cyclic Redundancy Check (CRC) method, Error Correction Code (Error Correction Code, ECC) method, etc.

For example, two bits can be used for value storage. At this time, a complementary algorithm can be used to check whether the target key value is normal. For example, when the target key value is "1", it can be stored in the memory of the processing unit. The register addresses of two different blocks of the unit are stored, one for the target key value "1" and one for its complementary value "0". In this way, when the processing unit is damaged by electrostatic discharge (ESD) and finds that the values stored in the two register addresses are not complementary to each other, it can be known that the target key value may be wrong.

For example, seven bits can be used for value storage. At this time, the Hamming code algorithm ((7,4) Hamming code) can be used to check whether the target key value is normal, for example, when the target key value is "" 1", first place the target key value "1" in the first bit and add a value (0 or 1) to the second bit to become 2 bits with the target key value, then, in the third bit -4 bits and then take the complementary value of the 1st to 2nd bits for a total of 2 bits, and finally use the (7,4) Hamming code for the value of the 1st to 4th bits to 7bit, so that a complementary value can be generated. Confirmation mechanism and 1bit error correction Hamming code. Among the 7 bits, if only 1 bit is wrong, it can be corrected by Hamming code. If the error is more than 2 bits, the processing unit can only report the error to the vehicle host 220 for processing.

In the embodiment of the present invention, in order to prevent electrostatic discharge (ESD) from destroying the display setting value, the processing unit may also distribute the display setting value in a plurality of blocks of the memory unit of the processing unit for storage, so as to protect the display setting value the goal of.

In the embodiment of the present invention, in order to prevent electrostatic discharge (ESD) from destroying the display setting value, the processing unit may further use a protection algorithm to protect the display setting value (as shown in FIG. 3 ), wherein the protection algorithm may use cyclic redundancy Compensation Check (CRC) method, Error Correction Code (ECC) method, etc.

On the other hand, when the processing unit "does not have a mechanism to determine whether the display setting value is wrong" or "cannot determine whether the display setting value is wrong", for example, an error occurs in the judgment circuit, such as a hardware pin micro-short or micro-circuit. When the circuit is disconnected (the display setting value is in the floating state of "0" or "1"), the method of the fourth embodiment or the fifth embodiment described below can be used.

FIG. 5 is a schematic diagram of a vehicle display error detection system 400 according to a fourth embodiment of the present invention. The vehicle display error detection system 400 includes a vehicle host 420 , a processing unit 440 , and a vehicle panel 460 . The processing unit 440 is electrically connected to the vehicle host 420 . The vehicle panel 460 is electrically connected to the processing unit 440 .

As shown in FIG. 5 , the processing unit 440 receives image data corresponding to the original image from the vehicle host 420 to generate updated image data corresponding to the updated image. Among them, the updated image is to add marked words on the left and right sides of the original image. For example, FIG. 6A is an illustration of an original image, and FIG. 6B is an illustration of an updated image, that is, the updated image of FIG. 6B is the left side of the original image of FIG. Add the marked word "R" to the right of the .

The processing unit 440 has display settings. The processing circuit 442 of the processing unit 440 outputs the display data to the vehicle panel 460 according to the display setting value and the updated image data, so that the vehicle panel 460 displays the vehicle image according to the display data. Accordingly, the driver can grasp the road conditions behind the vehicle by viewing the vehicle image on the vehicle panel 460 .

In the fourth embodiment of the present invention, when the display setting value is wrong, the vehicle image displayed on the vehicle panel 460 will appear in opposite directions (as shown in FIG. 6C ). At this time, the vehicle image displayed on the vehicle panel 460 The marked words on the image will also be reversed left and right. In this way, if the driver finds that the marked words have been reversed left and right, they can increase their alertness and confirm the actual driving direction of the vehicle behind to avoid accidents. In other words, the driver can judge whether the display setting value is wrong according to the words on the mark.

Specifically, in the fourth embodiment of the present invention, the vehicle display error detection system 400 adds marking words to the original image, so that the driver can judge whether the display setting value is wrong according to the marking words, so as to ensure driving safety.

FIG. 7 is a schematic diagram of a vehicle display error detection system 500 according to a fifth embodiment of the present invention. The vehicle display error detection system 500 includes a vehicle host 520 , a processing unit 540 , and a vehicle panel 560 . The processing unit 540 is electrically connected to the vehicle host 520 . The vehicle panel 560 is electrically connected to the processing unit 540 .

As shown in FIG. 7 , the processing unit 540 receives image data from the vehicle host 520 . The processing unit 540 has display settings. The processing circuit 542 of the processing unit 540 outputs the display data to the vehicle panel 560 according to the display setting value and the image data, so that the vehicle panel 560 displays the vehicle image according to the display data. Accordingly, the driver can grasp the road conditions behind the vehicle by viewing the vehicle image on the vehicle panel 560 .

In the fifth embodiment of the present invention, the processing unit 540 forcibly replaces the display setting value with the target key value. In this way, even if the display setting value is destroyed, it can be ensured that the processing unit 540 outputs the display data to the vehicle panel 560 according to the display setting value replaced by the target key value and the image data, so as to ensure that the vehicle panel 560 has The displayed car image is correct.

Specifically, in the fifth embodiment of the present invention, the vehicle display error detection system 500 will forcibly replace the display setting value with the target key value, so as to prevent the vehicle image displayed on the vehicle panel 560 from being reversed in direction. to ensure driving safety.

To sum up the above, the present invention provides a vehicle display error detection system, which can instantly detect whether the direction of the vehicle image displayed on the vehicle panel is reversed, and make corrections in real time to ensure driving safety.

The foregoing has outlined features of several embodiments so that those skilled in the art may better understand aspects of the invention. Those skilled in the art will appreciate that they may readily use the present invention as a basis for designing or modifying other processes and structures, thereby achieving the same objectives and/or achieving the same advantages as the embodiments described herein . Those skilled in the art should also understand that these equivalent constructions do not depart from the spirit and scope of the present invention, and they can make various changes, substitutions and alterations without departing from the spirit and scope of the present invention.

100,200,300,400,500: Vehicle display error detection system 122,244,344: Judgment Circuit 120, 220, 320, 420, 520: Vehicle host 140, 240, 340, 440, 540: Processing Units 142, 242, 342, 442, 542: Processing Circuits 160, 260, 360, 460, 560: Vehicle panels

A better understanding of aspects of the present invention can be obtained from the following detailed description taken in conjunction with the accompanying drawings. It should be noted that, according to standard practice in the industry, various features are not drawn to scale. In fact, the dimensions of the various features may be arbitrarily increased or decreased in order to clarify the discussion. 1 is a schematic diagram of a vehicle display error detection system according to a first embodiment of the present invention. [ Fig. 2 ] is a schematic diagram of a vehicle display error detection system according to a second embodiment of the present invention. 3 is a schematic diagram of a vehicle display error detection system according to a third embodiment of the present invention. [FIG. 4] is a flow chart of judging whether the display setting value is wrong and correcting the display setting value according to an embodiment of the present invention. [ Fig. 5 ] An illustration of an original image according to a fourth embodiment of the present invention. [ Fig. 6A ] An illustration of an original image according to a fourth embodiment of the present invention. [FIG. 6B] It is a diagram illustrating an updated image according to the fourth embodiment of the present invention. 6C is a diagram illustrating an example of a vehicle image displayed on the vehicle panel when the setting value is incorrect according to the fourth embodiment of the present invention. 7 is a schematic diagram of a vehicle display error detection system according to a fifth embodiment of the present invention.

200: Vehicle Display Error Detection System

220: Vehicle host

240: Processing Unit

242: Processing circuit

244: Judgment circuit

260: Vehicle Panel

Claims (8)

A vehicle display error detection system, comprising: a vehicle host; a processing unit electrically connected to the vehicle host; and a vehicle panel electrically connected to the processing unit; wherein the processing unit is received from the vehicle host an image data; wherein the processing unit has a display setting value; wherein the processing unit outputs a display data to the vehicle panel according to the display setting value and the image data, so that the vehicle panel displays according to the display data A vehicle image; wherein the vehicle host receives the display setting value from a processing circuit of the processing unit, and a judgment circuit of the vehicle host confirms and verifies the display setting value to determine whether the display setting value is wrong wherein when the judgment circuit of the vehicle host determines that the display setting value is wrong, the vehicle host computer transmits an instruction to the processing unit so that the processing unit uses a target key value as the basis for correcting the display setting value. A vehicle display error detection system, comprising: a vehicle host; a processing unit electrically connected to the vehicle host; and a vehicle panel electrically connected to the processing unit; wherein the processing unit is received from the vehicle host an image data; wherein the processing unit has a display setting value; wherein the processing unit outputs according to the display setting value and the image data a display data to the vehicle panel, so that the vehicle panel can display a vehicle image according to the display data; wherein the processing unit judges whether the display setting value is wrong; wherein when the processing unit judges that the display setting value is wrong , the processing unit reports an error to the vehicle host and the processing unit corrects the display setting value; wherein the processing unit judges whether the display setting value is wrong or not: when the display setting value is different from a target key value, then judge The display setting value is wrong; wherein the processing unit corrects the display setting value by using the target key value to correct the display setting value. The vehicle display error detection system as claimed in claim 2, wherein the processing unit stores the target key value in a plurality of blocks of a memory unit of the processing unit. The vehicle display error detection system of claim 2, wherein the processing unit further protects the target key value using a protection algorithm, wherein the protection algorithm uses a cyclic redundancy check (CRC) method or error correction code (ECC) method. The vehicle display error detection system as claimed in claim 2, wherein the processing unit further uses a protection algorithm to protect the display setting value, wherein the protection algorithm uses a Cyclic Redundancy Check (CRC) method or an error correction code (ECC) method. A vehicle display error detection system, comprising: a vehicle host; a processing unit electrically connected to the vehicle host; and a vehicle panel electrically connected to the processing unit; wherein the processing unit is received from the vehicle host An image data corresponding to an original image is generated to generate an updated image data corresponding to an updated image, wherein the updated image is to add a mark on the left and right sides of the original image; wherein the processing unit has a display setting value ; wherein the processing unit outputs a display data to the vehicle panel according to the display setting value and the updated image data, so that the vehicle panel displays a vehicle image according to the display data; a driver can display a vehicle image according to the display data; Mark words to judge whether the display setting value is wrong. A vehicle display error detection system, comprising: a vehicle host; a processing unit electrically connected to the vehicle host; and a vehicle panel electrically connected to the processing unit; wherein the processing unit is received from the vehicle host an image data; wherein the processing unit has a display setting value; wherein the processing unit outputs a display data to the vehicle panel according to the display setting value and the image data, so that the vehicle panel can be based on the display data to display a vehicle image; wherein the processing unit forcibly replaces the display setting value with a target key value. The vehicle display error detection system as described in claim 1, 2, 6 or 7, wherein the vehicle panel is used for a rear view display, wherein the rear view display is an electronic rearview mirror, an electronic rearview mirror or a reversing display .

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