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CN-121986471-A - Projection device for vehicle

CN121986471ACN 121986471 ACN121986471 ACN 121986471ACN-121986471-A

Abstract

The present disclosure relates to a projection device for a vehicle. The projection device for a vehicle according to an embodiment of the present disclosure includes an image generation device that outputs a projection image, an actuator that changes a traveling direction of the projection image from the image generation device and outputs a partially overlapped projection image, and a signal processing device that outputs a compensation image signal for compensating an overlapping region of the projection image based on the actuator to the image generation device. Thus, a clear projection image can be output while increasing the resolution of the projection image.

Inventors

  • ZHENG ZHIYING
  • ZHENG BINGYOU
  • Zheng Dongman
  • JIANG XIAOZHEN

Assignees

  • LG电子株式会社

Dates

Publication Date
20260505
Application Date
20230807

Claims (14)

  1. 1. A projection device for a vehicle, comprising: an image generating device that outputs a projection image; an actuator for changing a traveling direction of the projection images from the image generating device to output partially overlapped projection images, and And a signal processing device that outputs a compensation image signal for compensating for an overlapping region of the projection images based on the actuator to the image generating device.
  2. 2. The projection device for a vehicle according to claim 1, wherein, The device further comprises a detection part, wherein the detection part detects the action of the actuator; the signal processing means outputs a compensation image signal for compensating for an overlapping region of the projection image based on the actuator to the image generating means based on the action of the actuator.
  3. 3. The projection device for a vehicle according to claim 1, wherein, The signal processing device outputs a reference signal for driving the actuator, which is changed in correspondence to the action of the actuator.
  4. 4. The projection device for a vehicle according to claim 1, wherein, The device further comprises a detection part, wherein the detection part detects the action of the actuator; the signal processing means calculates a resonance frequency based on an action of the actuator, and changes a reference signal for driving the actuator based on the calculated resonance frequency.
  5. 5. The projection device for a vehicle according to claim 4, wherein, The device also comprises a temperature detection part; The signal processing means calculates the resonance frequency based on the action of the actuator and the temperature detected in the temperature detecting section, and changes the reference signal for driving the actuator based on the calculated resonance frequency.
  6. 6. The projection device for a vehicle according to claim 4, wherein, Also includes a timer; The signal processing means calculates the resonance frequency based on the action of the actuator and the action period of the actuator from the timer, and changes the reference signal for driving the actuator based on the calculated resonance frequency.
  7. 7. The projection device for a vehicle according to claim 1, wherein, The signal processing device controls the actuator so that the actuator operates in response to any one of the projection images of a plurality of colors when the projection images of the plurality of colors are sequentially output based on the vertical synchronization signal.
  8. 8. The projection device for a vehicle according to claim 7, wherein, The device further comprises a detection part, wherein the detection part detects the action of the actuator; The signal processing means outputs a compensation image signal for compensating for an overlapping region of the projection image based on any one color of the actuator to the image generating means based on the operation of the actuator.
  9. 9. The projection device for a vehicle according to claim 1, wherein, The signal processing device controls the actuator so that the actuator operates in response to the projection images of a plurality of colors when the projection images of the plurality of colors are simultaneously output based on the vertical synchronization signal.
  10. 10. The projection device for a vehicle according to claim 9, wherein, The device further comprises a detection part, wherein the detection part detects the action of the actuator; the signal processing means outputs a compensation image signal for compensating for an overlapping region of the projection image based on the actuator to the image generating means based on the action of the actuator.
  11. 11. The projection device for a vehicle according to claim 1, wherein, The signal processing device calculates a compensation luminance value of a first pixel based on a luminance value of the first pixel and a luminance value of a second pixel adjacent to the first pixel in an overlapping region of the projection image of the actuator, and outputs a compensation image signal based on the compensation luminance value of the first pixel to the image generating device.
  12. 12. The projection device for a vehicle according to claim 1, wherein, As the amount of movement of the actuator increases, the signal processing means increases the number of adjacent pixels in compensating for pixels in the overlapping region of the projection image based on the actuator, and outputs the luminance value of the adjacent pixels that have been increased and a compensation image signal based on the luminance value of the pixel to the image generating means.
  13. 13. A projection device for a vehicle, comprising: an image generating device that outputs a projection image; An actuator that changes a traveling direction of the projection images from the image generating device, and outputs partially overlapped projection images; a detection part for detecting the action of the actuator, and And a signal processing device that calculates a resonance frequency based on an operation of the actuator, and changes a reference signal for driving the actuator based on the calculated resonance frequency.
  14. 14. The projection device for a vehicle according to claim 13, wherein, The signal processing means outputs a compensation image signal for compensating for an overlapping region of the projection image based on the actuator to the image generating means based on the action of the actuator.

Description

Projection device for vehicle Technical Field The present disclosure relates to a vehicle projection apparatus, and more particularly, to a vehicle projection apparatus capable of outputting a clear projection image while increasing the resolution of the projection image. Background A vehicle is a device that moves in a direction desired by a seated user. A typical example is an automobile. On the other hand, in order to facilitate the use of a user of the vehicle, a projection device for the vehicle is mounted inside the vehicle. For example, there is a tendency to employ a head-up display that outputs a projected image to a windshield, or to output a projected image to a vehicle headlamp. On the other hand, korean laid-open patent publication No. 10-2006-0101026 as a prior art document discloses a display device and method that employ a resolution improving device capable of effectively improving resolution in a projection type display device. In particular, in the prior art document, an input signal applying unit that applies an input signal to an image displacement driving unit causes different images to be periodically displayed on a screen, and when visually recognizing the images, a person can feel that the number of pixels is large, so that an improved resolution can be provided with the same number of pixels. However, according to the prior art document, since it is difficult to generate an ideal input signal when the start member of the resolution improving apparatus is driven, there is a disadvantage in that an image is distorted due to overshoot and rising time of the input signal. Disclosure of Invention Problems to be solved by the invention The present disclosure has been made to solve the problem of providing a projection device for a vehicle capable of outputting a clear projection image while increasing the resolution of the projection image. Means for solving the problems In order to achieve the above object, a projection device for a vehicle according to an embodiment of the present disclosure includes an image generating device that outputs a projection image, an actuator that changes a traveling direction of the projection image from the image generating device and outputs a projection image that partially overlaps, and a signal processing device that outputs a compensation image signal for compensating an overlapping region of the projection image based on the actuator to the image generating device. On the other hand, the projection device for a vehicle according to an embodiment of the present disclosure may further include a detection unit that detects an operation of the actuator, and the signal processing unit may output a compensation image signal for compensating an overlapping region of the projection image based on the actuator to the image generating unit based on the operation of the actuator. On the other hand, the signal processing device may output a reference signal for driving the actuator, which is changed in correspondence with the actuator motion. On the other hand, the projection device for a vehicle according to an embodiment of the present disclosure may further include a detection portion that detects an operation of the actuator, and the signal processing device may calculate a resonance frequency based on the operation of the actuator, and change a reference signal for driving the actuator based on the calculated resonance frequency. On the other hand, the projection device for a vehicle of an embodiment of the present disclosure may further include a temperature detection portion, and the signal processing device may calculate a resonance frequency based on an operation of the actuator and a temperature detected in the temperature detection portion, and change a reference signal for driving the actuator based on the calculated resonance frequency. On the other hand, the projection device for a vehicle of an embodiment of the present disclosure may further include a timer, and the signal processing device may calculate a resonance frequency based on an operation of the actuator and an operation period of the actuator from the timer, and change a reference signal for driving the actuator based on the calculated resonance frequency. On the other hand, the signal processing device may control the actuator so that the actuator operates in response to any one of the projection images of the plurality of colors when the projection images of the plurality of colors are sequentially output based on the vertical synchronization signal. On the other hand, the projection device for a vehicle according to an embodiment of the present disclosure may further include a detection unit that detects an operation of the actuator, and the signal processing unit may output a compensation image signal for compensating an overlapping region of the projection images of any one color based on the actuator to the image generating device based on the operation of the actuator. On the ot