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KR-102962101-B1 - APPARATUS FOR RECORDING PERFORMANCE ENHANCEMENT, AND METHOD THEREOF

KR102962101B1KR 102962101 B1KR102962101 B1KR 102962101B1KR-102962101-B1

Abstract

A recording performance enhancement device according to one embodiment of the present invention may include a wiper driven on the surface of a windshield glass; and a control unit that, when the wiper is driven, compares an acoustic signal generated by friction between the windshield glass and the wiper with a first reference value, or compares a current signal measured by a motor driving the wiper with a second reference value to determine whether foreign matter exists on the surface.

Inventors

  • 손상륜
  • 김경준
  • 이재웅

Assignees

  • 현대자동차주식회사
  • 기아 주식회사

Dates

Publication Date
20260511
Application Date
20200825

Claims (16)

  1. A wiper driven on the surface of the windshield glass; and The present invention includes a control unit that determines whether foreign matter exists on the surface by comparing an acoustic signal generated by friction between the windshield glass and the wiper with a first reference value when the wiper is driven, or by comparing a current signal measured by the motor driving the wiper with a second reference value. The above control unit is, The frequency value of the above acoustic signal is compared with the first reference value to determine whether the above foreign substance is present on the surface, and The above first reference value is, A recording performance enhancement device characterized by the frequency value of the acoustic signal generated on the surface in a state where it is determined that there are no foreign substances.
  2. In claim 1, The above control unit is, If it is determined that the above foreign substance exists on the above surface, A recording performance enhancement device that outputs a signal to control the spraying of washer fluid onto the surface above, or outputs a signal to induce a car wash to the user.
  3. delete
  4. In claim 1, The above control unit is, The current value of the above current signal is compared with the second reference value to determine whether the foreign substance is present on the surface, and The above second reference value is, A recording performance enhancement device, which is the current value of the current signal measured on the surface in a state where the above foreign substances are determined to be absent.
  5. A shooting unit that captures the surroundings of a vehicle and generates a video signal; and It includes a control unit that compares the image signal containing at least one of a shape and a character with a third reference value to determine whether a foreign substance exists on the surface of the windshield glass or on the lens of the imaging unit. The above control unit is, Comparing at least one recognition rate value among the above shapes and characters with the third reference value to determine whether the foreign substance is present on the surface or the lens, The above third reference value is, A recording performance enhancement device characterized by having at least one reference recognition rate value among the shape and character generated through the surface or lens in a state where the above foreign substance is determined to be absent.
  6. In claim 5, The above control unit is, If it is determined that the foreign substance is present on the surface or the lens, A recording performance enhancement device that outputs a signal to control the spraying of washer fluid onto the surface, or outputs a signal to induce a user to remove foreign matter from the surface or the lens.
  7. delete
  8. In claim 5, The above control unit is, A pop-up menu is created to select at least one of the human face, vehicle license plate, and phone number included in the above video signal as a target for blur processing, and A recording performance enhancement device that blurs the selected target based on the above pop-up menu.
  9. A step of driving a wiper on the surface of the windshield glass; and When the wiper is driven, the method includes a step of determining whether foreign matter exists on the surface by comparing an acoustic signal generated by friction between the windshield glass and the wiper with a first reference value, or by comparing a current signal measured from the motor driving the wiper with a second reference value. The step of determining whether the foreign substance is present on the surface is, A method for improving recording performance characterized by including the step of comparing the frequency value of the above acoustic signal with the first reference value, which is the frequency value of the above acoustic signal generated on the surface in a state determined to be free of the above foreign substance.
  10. In claim 9, If it is determined that the above foreign substance exists on the above surface, A method for improving recording performance, further comprising the step of outputting a signal to control spraying washer fluid onto the surface or outputting a signal to induce a car wash to the user.
  11. delete
  12. In claim 9, The step of determining whether the foreign substance is present on the surface is, A method for improving recording performance comprising the step of comparing the current value of the above current signal with the second reference value, which is the current value of the above current signal measured on the surface in a state where it is determined that there is no foreign substance.
  13. A step of generating an image signal of the vehicle's surroundings through a camera unit; and The method includes a step of comparing the image signal containing at least one of a shape and a character with a third reference value to determine whether a foreign substance exists on the surface of the windshield glass or on the lens of the imaging unit. The step of determining whether the foreign substance is present on the surface or the lens is, A method for improving recording performance characterized by including the step of comparing at least one recognition rate value among the above shapes and characters with the third reference value, which is at least one reference recognition rate value among the above shapes and characters generated through the surface or lens in a state where the above foreign substance is determined to be absent.
  14. In claim 13, If it is determined that the foreign substance is present on the surface or the lens, A method for improving recording performance, further comprising the step of outputting a signal to control spraying washer fluid onto the surface, or outputting a signal to induce a user to remove foreign matter from the surface or the lens.
  15. delete
  16. In claim 13, A step of generating a pop-up menu that selects at least one of a person's face, a vehicle license plate, and a phone number included in the above video signal as a target for blur processing; and A method for improving recording performance, further comprising the step of blurring the selected target based on the above popup menu.

Description

Apparatus for Recording Performance Enhancement and Method Thereof The present invention relates to a recording performance enhancement device and method for determining in real time whether foreign substances are present on the surface of a windshield glass. With the number of vehicles increasing significantly every year, traffic accidents are also on the rise. When such accidents occur, evidence and witnesses are necessary to resolve the issue; however, in most situations, witnesses are unavailable, and the matter must be resolved based on evidence alone. In the event of a traffic accident, it is necessary to identify the perpetrator and the victim and handle the situation accordingly. Currently, aside from eyewitnesses at the scene, the only available evidence is the Drive Video Record System (DVRS), including vehicle black boxes; consequently, the installation of vehicle black boxes is becoming increasingly mandatory to secure evidence. To this end, while most vehicles are currently equipped with dashcams, the footage recorded by the dashcams must remain intact. However, video footage captured in an environment where the surface of the vehicle's windshield glass or the lens of the camera unit is contaminated by foreign substances such as rain, dirt, or snow is bound to be damaged. Since the user cannot check in real time whether foreign substances are present on the surface of the vehicle's windshield glass or the lens of the camera unit and only becomes aware of it through already captured video, there is a problem in that it is difficult to claim it as verified evidence in the context of a traffic accident. For this reason, current Drive Video Record Systems (DVRS) cannot check the screen being recorded in real time, making it impossible to determine the accuracy of the video. FIG. 1 is a block diagram illustrating a recording performance enhancement device according to one embodiment of the present invention. FIG. 2 is an example of a comparison graph of frequency values of acoustic signals generated by friction between the windshield glass and the wiper when the wiper is driven according to an embodiment of the present invention. FIG. 3 is another example of a comparison graph of frequency values of acoustic signals generated by friction between the windshield glass and the wiper when the wiper is driven according to one embodiment of the present invention. FIG. 4 is a comparison graph of the current value of a current signal measured in a motor driving a wiper when driving a wiper according to another embodiment of the present invention. FIG. 5 is a block diagram illustrating a recording performance enhancement device according to another embodiment of the present invention. FIG. 6 is a comparison photograph of an image signal generated by a shooting unit of a recording performance enhancement device according to another embodiment of the present invention. FIG. 7 is a comparison photograph of an image including a target for blur processing among video signals and a blurred image result according to another embodiment of the present invention. FIG. 8 is an example of a flowchart illustrating a method for improving recording performance according to another embodiment of the present invention. FIG. 9 is another example of a flowchart illustrating a method for improving recording performance according to another embodiment of the present invention. FIG. 10 is another example of a flowchart illustrating a method for improving recording performance according to another embodiment of the present invention. Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that in assigning reference numerals to the components of each drawing, the same components are given the same reference numeral whenever possible, even if they are shown in different drawings. Furthermore, in describing the embodiments of the present invention, if it is determined that a detailed description of related known components or functions would hinder understanding of the embodiments of the present invention, such detailed description is omitted. In describing the components of the embodiments of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended merely to distinguish the components from other components, and the essence, order, or sequence of the components is not limited by the terms. Furthermore, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this application. Hereinafter, emb