TWI633528B - Display calibration system and display calibration method - Google Patents

Abstract

The invention provides a display correction system and a display correction method. The display calibration system includes a processor, a display, and a fingerprint sensor. The display is coupled to the processor. A fingerprint sensor is coupled to the processor. When the display is overlaid on the fingerprint sensor, the processor controls the display to emit multiple lights in sequence. The fingerprint sensor receives the light and separates each light into a plurality of color lights corresponding to a plurality of wavelengths. The processor obtains the intensity of the color light to perform a measurement operation, and generates a color characteristic file according to the measurement operation.

Description

Display correction system and display correction method

The present invention relates to a display correction system and display correction method, and more particularly to a display correction system and display correction method for performing display color correction using a fingerprint sensor.

While the color gamut that the display can cover is becoming wider and wider, industries such as print publishing, art design, and image photography are paying more attention to the degree of color reproduction. In order to make the products more attractive to customers in the shopping malls, most of the manufacturers choose to adjust the display to the most vivid degree, but it also causes serious distortion in color. Therefore, color correction is a very important issue for relevant practitioners.

The color correction technique is to enable the display to more accurately reproduce the colors that the user desires to present. Color measurement instruments commonly used in the industry (for example, Minolta CA210) can accurately measure the color displayed by the display, but the price is not affordable to the average consumer. Consumer-grade merchandise (for example, Datacolor Spyder)'s color measurement performance is slightly inferior to industrial color measurement instruments, but the price is relatively close to the people to make it still have certain advantages. Whether it is industrial or consumer-grade products, the color measurement instruments circulating on the market are independent of the display, and the measurement results are not easy to control, resulting in measurement results that are not as expected. .

In view of the above, the present invention provides a display correction system and a display correction method improved by a fingerprint recognition device, which can perform color correction of a display using elements inherent to a general notebook computer.

The present invention provides a display correction system including a processor, a display, and a fingerprint sensor. The display is coupled to the processor. A fingerprint sensor is coupled to the processor. When the display is overlaid on the fingerprint sensor, the processor controls the display to emit multiple lights in sequence. The fingerprint sensor receives the light and separates each light into a plurality of color lights corresponding to a plurality of wavelengths. The processor obtains the intensity of the color light to perform a measurement operation, and generates a color characteristic file according to the measurement operation.

In an embodiment of the invention, the fingerprint detector includes an optical lens, an image sensor, and a filter disposed between the optical lens and the image sensor, wherein each light passes through the plurality of regions of the filter. The block is separated into color lights corresponding to the above wavelengths.

In an embodiment of the invention, when the display is not overlaid on the fingerprint sensor, the processor adjusts the color light intensity of the corresponding filter block on the image sensor to the same intensity to the image sensor. The sensed image is fingerprinted.

In an embodiment of the invention, the fingerprint sensor includes a cymbal, an image sensor, and an optical lens disposed between the cymbal and the image sensor, and the first portion of the first surface of the cymbal is coated with a reflection The coating and the second portion of the second surface of the crucible are coated with a light absorbing coating.

In an embodiment of the invention, the light is incident perpendicularly from the third surface of the crucible and is reflected by the first portion of the first surface and then transmitted through the second portion of the second surface to be separated into colored light corresponding to the wavelength.

In an embodiment of the invention, the fingerprint sensor further includes an illuminator, when the finger is located on the third surface, the illuminator emits a second light incident from the first surface other than the first portion, and is reflected by the third surface And then exiting through the second surface other than the second portion, and the image sensor receives the second light generated by the second surface to generate an image for fingerprint recognition of the finger.

The present invention provides a display correction method suitable for use in a display correction system. The display calibration system includes a processor, a display, and a fingerprint sensor. The display is coupled to the processor. A fingerprint sensor is coupled to the processor. The display correction method includes sequentially emitting a plurality of lights by the processor controlling the display when the display is overlaid on the fingerprint sensor. The display correction method further includes receiving the light by the fingerprint sensor and separating each light into a plurality of color lights corresponding to the plurality of wavelengths. The display calibration method further includes obtaining, by the processor, the intensity of the color light to perform a measurement operation, and generating a color characteristic file according to the measurement operation.

In an embodiment of the invention, the fingerprint detector includes an optical lens, an image sensor, and a filter disposed between the optical lens and the image sensor, wherein each light passes through the plurality of regions of the filter. The block is separated into color lights corresponding to the above wavelengths.

In an embodiment of the invention, the fingerprint sensor includes a cymbal, an image sensor, and an optical lens disposed between the cymbal and the image sensor, and the first portion of the first surface of the cymbal is coated with a reflection The coating and the second portion of the second surface of the crucible are coated with a light absorbing coating.

In an embodiment of the invention, the light is incident perpendicularly from the third surface of the crucible and is reflected by the first portion of the first surface and then transmitted through the second portion of the second surface to be separated into colored light corresponding to the wavelength.

Based on the above, the display correction system and the display correction method of the present invention can use the fingerprint sensor to receive the light emitted by the display and separate the light into a plurality of wavelengths of color light when the display is overlaid on the fingerprint sensor, and then pass through the processor. The intensity of the colored light is utilized to perform the measurement operation. The present invention can be used to separate light into a plurality of wavelengths of color light by providing a filter between the optical lens of the fingerprint sensor and the image sensor. The invention can also be coated with a reflective paint and a light absorbing paint on the surface of the fingerprint of the fingerprint sensor so that when the display is covered on the fingerprint sensor, the light of the display can be perpendicularly incident and emitted through the surface of the reflective paint and the light absorbing paint.稜鏡 Separation of light into multiple wavelengths of colored light. Whether the method of setting a filter or applying a coating on a surface of a crucible, the display correction system of the present invention can provide a color correction function while being able to perform fingerprint recognition normally. Reduce the cost of additional color measurement instruments.

The above described features and advantages of the invention will be apparent from the following description.

The following figures are for illustrative purposes only, and therefore the elements in the drawings and the size ratios, shapes, and mutual distance relationships between the elements do not represent the actual components and the size ratios, shapes, and mutual distance relationships between the elements.

1 is a block diagram of a display correction system in accordance with an embodiment of the present invention.

Referring to FIG. 1 , the display calibration system 100 of the present invention includes a processor 110 , a display 120 , and a fingerprint sensor 130 . Display 120 is coupled to processor 110. Fingerprint sensor 130 is coupled to processor 110. The display correction system 100 can be a notebook computer that can be overlaid on the fingerprint sensor 130 and the keyboard when the notebook is docked.

The processor 110 can be a central processing unit (CPU), or other programmable general purpose or special purpose microprocessor (Microprocessor), digital signal processor (DSP), programmable A controller, an Application Specific Integrated Circuit (ASIC) or other similar component or a combination of the above components.

The display 120 may be an Organic Light Emitting Diode (OLED), an In-Plane-Switching Liquid Crystal (IPS), or a Low-temperature Polycrystalline Silicon (LTPS). A display of a type panel such as Indium Gallium Zinc Oxide (IGZO), Vertical Alignment Liquid Crystal (VA), or Quantum dot display (QD).

The fingerprint sensor 130 can include an illuminator, a cymbal, an optical lens, and an image sensor. The light emitted by the illuminator enters the sputum and reflects the fingerprint, and then passes through the optical lens to reach the image sensor. The image sensor can be a Complementary Metal-Oxide-Semiconductor (CMOS) image sensor, a Charge-coupled Device (CCD) image sensor or other types of image sensing. Device.

2 is a flow chart of a display correction system in accordance with an embodiment of the present invention.

Referring to FIG. 2, in step S201, the user can turn on the color correction tool of the notebook to prepare for color measurement of the display 120. This color correction tool can be a color correction software stored in the storage device of the notebook.

In step S203, the processor 110 of the notebook computer determines whether the notebook computer is picked up. That is, the processor 110 determines whether the display 120 is completely covered on the fingerprint sensor 130 of the notebook. In this embodiment, the fingerprint sensor 130 can be disposed on the same side of the notebook computer as the keyboard. When the notebook computer is picked up, the display 120 covers the fingerprint sensor 130 and the keyboard at the same time.

When the notebook computer is not picked up, the processor 110 does not perform color measurement. Until the notebook is picked up, in step S205, the processor 110 may execute a color correction tool to perform color measurement of the display 120.

While performing the color measurement of the display 120, the processor 110 determines in step S207 whether the notebook computer is maintained in the activated state. If the notebook computer is turned on, in step S209, the processor 110 records the measurement phase and stops the color measurement. That is to say, when the notebook computer is picked up for color correction and suddenly turned on by the user, the color measurement program is paused, and the user can use the notebook computer normally until the user picks up the notebook computer again. Processor 110 then begins color measurement from the recorded measurement phase. It is worth noting that in each measurement phase, display 120 will display different colors in sequence for color measurement.

In step S211, after the color measurement is completed, the processor 110 converts the measurement result into an International Commission on Illumination (CIE) 1931 XYZ color space, and then generates an International Color Consortium (International) in step S213. Color Consortium, ICC) color profile. Specifically, in the color measurement process, when the light emitted by the display 120 passes through the fingerprint sensor 130, the fingerprint sensor 130 may be coated with an intrinsic flaw or additionally disposed on the fingerprint sensor. The filter in 130 separates the light into a plurality of color lights corresponding to the plurality of wavelengths (the setting method of the 稜鏡 or the filter will be described in detail below), and the processor 110 obtains the image sense in the fingerprint sensor 130. The intensity of the color light corresponding to the plurality of wavelengths is calculated in different areas on the detector to convert the measurement result into an ICC 1931 XYZ color space.

For example, after the processor 110 obtains the plurality of wavelengths, it can be calculated to conform to a Luther condition, that is, Equation (1), to reduce the color measurement error.

…………………………………………(1)

In the above equation, , , For the ICC 1931 XYZ color space, Is a constant, For light transmittance, For light intensity.

3 is a schematic diagram of a display correction system in accordance with an embodiment of the present invention.

Referring to FIG. 3, the display calibration system 300 of the present invention includes a display 120 and a fingerprint sensor 130. The fingerprint sensor 130 can include an optical lens 131 and an image sensor 133 , and the filter 132 can be disposed between the optical lens 131 and the image sensor 133 . The filter 132 may in turn include a first block 1321, a second block 1322, and a third block 1323. In this embodiment, the first block 1321, the second block 1322, and the third block 1323 respectively allow light having a red wavelength, a green wavelength, and a blue wavelength to penetrate. However, the invention is not limited thereto. In another embodiment, the filter 132 may also include more blocks to allow more types of wavelengths of light to penetrate. Therefore, the processor 110 can perform color measurement according to the intensity of the color light of different wavelengths received by different regions on the image sensor 133.

It is to be noted that when the display 120 is not overlaid on the fingerprint sensor 130, the processor 110 can display the first block 1321, the second block 1322 of the corresponding filter 132 on the image sensor 130, and The color intensity of the third block 1323 is adjusted to be the same or an approximate intensity to perform the original fingerprint recognition function on the image sensed by the image sensor 133. In this way, the present invention can simultaneously perform the color measurement of the display 120 by using the fingerprint sensor 130 without affecting the original fingerprint recognition function only through the additionally disposed filter 132.

4 is a schematic diagram of a display correction system in accordance with another embodiment of the present invention.

Referring to FIG. 4, the display calibration system 400 of the present invention includes a display 120 and a fingerprint sensor 130. The fingerprint sensor 130 can include an image sensor 133, an illuminator 134, and a bore 135. The crucible 135 may have a first surface S1, a second surface S2, and a third surface S3. When on the notebook, the display 120 will be parallel to the third surface S3 of the crucible 135. The first portion P1 of the first surface S1 is coated with a reflective coating and the second portion P2 of the second surface S2 is coated with a light absorbing coating.

When color measurement is performed, the light L1 emitted from the display 120 may be perpendicularly incident from the third surface S of the crucible 135, and reflected through the first portion P1 of the first surface S1 and then through the aperture of the second portion P2 of the second surface S2. H is transmitted to separate into color lights L2 and L3 corresponding to different wavelengths. The aperture H can be placed anywhere in the second portion. For example, the colored light L2 is blue light and the colored light L3 is red light. There may also be color light of other wavelengths between the color lights L2 and L3, such as green light, yellow light, and the like. Therefore, the processor 110 can perform color measurement according to the intensity of the color light of different wavelengths received by different regions on the image sensor 133.

It should be noted that when the display 120 is not overlaid on the fingerprint sensor 130 and the finger is detected to be located on the third surface S3, the illuminator 134 may emit the second light L4 from the first portion other than the first portion P1. The surface S1 is incident and is reflected by the third surface S3 and then emitted through the second surface S2 other than the second portion P2. The image sensor 133 receives the second light L4 emitted from the second surface S2 to generate an image for fingerprint recognition of the finger. In this way, the present invention can simultaneously perform the color measurement of the display 120 by using the fingerprint sensor 130 without affecting the original fingerprint recognition function through a simple enamel coating.

In summary, the display correction system and the display correction method of the present invention can use the fingerprint sensor to receive the light emitted by the display and separate the light into a plurality of wavelengths of light when the display is overlaid on the fingerprint sensor, and then The processor utilizes the intensity of the colored light for the measurement operation. The present invention can be used to separate light into a plurality of wavelengths of color light by providing a filter between the optical lens of the fingerprint sensor and the image sensor. The invention can also be coated with a reflective paint and a light absorbing paint on the surface of the fingerprint of the fingerprint sensor so that when the display is covered on the fingerprint sensor, the light of the display can be perpendicularly incident and emitted through the surface of the reflective paint and the light absorbing paint.稜鏡 Separation of light into multiple wavelengths of colored light. Whether the method of setting a filter or applying a coating on a surface of a crucible, the display correction system of the present invention can provide a color correction function while being able to perform fingerprint recognition normally. Reduce the cost of additional color measurement instruments.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.

100, 300, 400‧‧‧ Display Calibration System

110‧‧‧ processor

120‧‧‧ display

130‧‧‧Finger sensor

Steps of S201, S203, S205, S207, S209, S211, S213‧‧‧ display correction method

131‧‧‧ optical lens

132‧‧‧Filter

1321‧‧‧First block

1322‧‧‧Second block

1323‧‧‧ third block

133‧‧‧Image sensor

134‧‧‧ illuminator

135‧‧‧稜鏡

S1‧‧‧ first surface

S2‧‧‧ second surface

S3‧‧‧ third surface

P1‧‧‧Part 1

P2‧‧‧ Part II

L1‧‧‧Light

L2‧‧‧Color

L3‧‧‧Color

L4‧‧‧second light

1 is a block diagram of a display correction system in accordance with an embodiment of the present invention. 2 is a flow chart of a display correction system in accordance with an embodiment of the present invention. 3 is a schematic diagram of a display correction system in accordance with an embodiment of the present invention. 4 is a schematic diagram of a display correction system in accordance with another embodiment of the present invention.

Claims (10)

A display correction system includes: a processor; a display coupled to the processor; and a fingerprint sensor coupled to the processor, wherein when the display is overlaid on the fingerprint sensor, the The processor controls the display to sequentially emit a plurality of light beams, the fingerprint sensor receives the light rays, and separate each of the light rays into a plurality of color lights corresponding to the plurality of wavelengths, and the processor obtains the intensity of the color lights to Calculating and obtaining a calculation result, and generating a color space according to the calculation result, thereby generating a color characteristic file according to the color space. The display calibration system of claim 1, wherein the fingerprint sensor comprises an optical lens, an image sensor, and a filter disposed between the optical lens and the image sensor. Each of the light rays is separated by the plurality of blocks of the filter into the colored lights corresponding to the wavelengths. The display calibration system of claim 2, wherein when the display is not overlaid on the fingerprint sensor, the processor corresponds the blocks of the image sensor to the blocks. The color light intensity is adjusted to the same intensity to fingerprint an image sensed by the image sensor. The display calibration system of claim 1, wherein the fingerprint sensor comprises a cymbal, an image sensor, and the image is disposed on the cymbal and the image An optical lens between the sensors, a first portion of a first surface of the crucible is coated with a reflective coating and a second portion of a second surface of the crucible is coated with a light absorbing coating. The display correction system of claim 4, wherein each of the rays is incident perpendicularly from a third surface of the crucible and is reflected by the first portion of the first surface and then through the second surface The second portion is transmissive to separate the colored lights corresponding to the wavelengths. The display correction system of claim 5, wherein the fingerprint sensor further comprises an illuminator, the illuminator emitting a second light from the first portion when a finger is on the third surface The first surface is incident and is reflected by the third surface and then emitted through the second surface other than the second portion, and the image sensor receives the second light emitted by the second surface to generate an image to perform the image. Fingerprint identification of the finger. A display calibration method is applicable to a display correction system, the display correction system includes a processor, a display and a fingerprint sensor coupled to the processor, the fingerprint sensor coupled to the processor The display correction method includes: when the display is overlaid on the fingerprint sensor, the processor controls the display to sequentially emit a plurality of lights; the fingerprint sensor receives the light, and each Separating the plurality of colored lights into a plurality of color lights corresponding to the plurality of wavelengths; and obtaining, by the processor, the intensities of the colored lights to calculate and obtain a calculated knot And generating a color space according to the calculation result, thereby generating a color characteristic file according to the color space. The display correction method of claim 7, wherein the fingerprint sensor comprises an optical lens, an image sensor, and a filter disposed between the optical lens and the image sensor. Each of the light rays is separated by the plurality of blocks of the filter into the colored lights corresponding to the wavelengths. The display correction method of claim 7, wherein the fingerprint sensor comprises an image sensor, an image sensor, and an optical lens disposed between the image sensor and the image sensor. A first portion of a first surface of the crucible is coated with a reflective coating and a second portion of a second surface of the crucible is coated with a light absorbing coating. The display correction method of claim 9, wherein each of the light rays is perpendicularly incident from a third surface of the crucible and is reflected by the first portion of the first surface and then via the second surface The second portion is transmissive to separate the colored lights corresponding to the wavelengths.