TW200535545A - Flashlight equipment and generating flashlight method - Google Patents

Abstract

This invention provides flashlight equipment and generating method of flashlight. The flashlight equipment comprises an image sensor, an automatic exposure unit, a processor, and a flashlight module. The image sensor picks up the image and distance parameters of a photography object. The automatic exposure unit calculates a desired lighting. The processor produces an electric discharge parameter based on the distance parameter and the desired lighting. According to the electric discharge parameter, the flashlight module supplies a photography light source. The generating method of flashlight comprises the following procedures: (A) it employs the image sensor to pick up the distance parameter and the desired lighting calculated by the automatic exposure unit. (B) The processor produces an electric discharge parameter based on the distance parameter and the desired lighting. (C) According to the electric discharge parameter, the flashlight module produces a photography light source for photography.

Description

200535545 5. Description of the invention (1) [Technical field to which the invention belongs] The present invention relates to a flash device and a flash method, and more particularly to a flash device and a flash method that can automatically adjust the amount of light emitted according to the distance of a subject. [Previous technology] Most current cameras have a built-in flash, which is used to provide an additional light source during image capture to ensure image quality when the external light source is insufficient. It does not emit light at all, which may cause the flash ’s exposure brightness to be wrong due to the large distance between the subject and the environment or the brightness when shooting. In addition, for example, the Republic of China Patent Case No. 0562986 proposed a built-in light sensor in the camera. When it is sensed that the light provided by the flash is sufficient, the light sensor is used to notify the flash to stop discharging to avoid overexposure, but this method requires an additional light sensor, which will increase production costs , So there is still room for improvement. Expose the square lights and sparkle light to avoid disguise to install the source. The clear version can be sent by mistake, and wrong. The preferred embodiment of the flash device includes: an image sensing unit, an automatic exposure unit, a processing unit, a memory unit, and a flash module. The image sensing unit can capture An image of a subject and a distance parameter, and

200535545 5. Description of the invention (2) The automatic exposure unit calculates an amount of light required for image acquisition, the processing unit generates a discharge parameter according to the distance parameter and the light, and generates a discharge time according to a comparison table in the memory unit. The flash module provides a shooting light source according to the discharge time. The flash method includes the following steps: A. Provide an image sensing unit, an automatic exposure unit, a processing unit and a flash module, and a shirt image sensing unit A distance parameter of a shooting subject can be captured, the automatic exposure unit is coupled to the image sensing unit, the J unit can generate-discharge parameters, the flash module_processing order B. the image sensing unit captures the distance Parameters and the amount of light required for self-shooting; the dynamic exposure unit calculates to obtain a discharge table C. The processing unit calculates the distance parameter and the amount of light; the X-ray light module generates a shooting light source based on the discharge parameters. Action = Your reviewers can further understand and understand the features and purposes of the invention. [Formula] Please refer to FIG. 1, it is not intended for the flash device of the present invention. The flashing device includes a sensor unit M 00, a unit 200, and a memory unit 14, the light source processing unit (which is the light unit, the sensing unit m, and the memory unit)-connected to the light source. Handle a single connection

Page 6 200535545 V. Description of the invention (3) 2 0 0. The sensing unit has an image sensing unit 11, an auto-focusing unit 113, and an auto-exposure unit 12. The light source processing unit has a processing element 13 and a flash module 15. The flash module 15 provides a light source for capturing images, and the flash module 15 can provide different light intensities with a discharge time. Or 5 Ji Yi Zao Yuan 14 stores a comparison table between the discharge time of the flash module 15 and the light intensity. As shown in Figure 3, the discharge time of the flash module 丨 5 is XI, which can provide Y1 light intensity. If the discharge time is X2, it can be long: for Y2 light intensity, if the discharge time is Xn, γη light intensity can be provided. The comparison table depends on the hardware specifications of the flash module. The image sensing unit i j includes a lens 111 and an image sensing element 112. The lens is composed of a plurality of lenses (not shown) and has a movable lens to form a lens with different focal lengths. The autofocus unit 丨 丨 3 is used to capture a distance of a subject 20 and can automatically adjust the focal length of the lens 丨 丨 j so that the lens 1 1 1 can project a clear image of the subject 20 into the image The sensing element 1 1 2 is imaged in its entirety. The image sensing element i 2 may be a photosensitive coupled device (CCD) or a complementary metal oxide semiconductor (CM0S). The image sensing element 112 is a camera. A semiconductor that can record light changes and is usually measured in megapixels (mega P1 xe 1). Generally, the number of megapixels in the camera specifications refers to the resolution of the CC or CMOS, that is, the number of photosensitive elements on the CCD of this camera. Among them, the surface of the photosensitive element on the CCD has the ability to store electric charges. When the surface feels light, it will reflect the charge to the photosensitive element i, which is produced by all the photosensitive elements on the entire CC.

200535545 V. Description of the invention (4) The signal generated by the invention constitutes a complete picture, and CMOS is a semiconductor made of two elements, silicon and germanium, so that it coexists with N ( Negatively charged) and P (positively charged) semiconductors. The current generated by these two complementary effects can be interpreted as an image to form a complete daylight. The automatic exposure unit 12 is coupled to the image sensing unit 丨 丨, and the ambient brightness γ 丨, which is one of the current shooting environments, is measured through the lens 111. When light is projected on the image sensing element 丨 丨 2 through the lens 111 and generated Corresponding to a light signal, the automatic exposure unit 12 determines whether the ambient brightness reaches a standard brightness Y0 according to the light signal, and when the ambient brightness γι is less than the standard brightness Y0, a light quantity needs to be supplemented when calculating different images. In general, the amount of light is in units of illuminance, and since the appropriate illuminance value X for a clear image that can be seen by human eyes is 50 0 illuminance ', the amount of light can be known through a second predetermined calculation method, which is the second predetermined calculation The method is =) (^ 〇_ ^ 1) / ¥ 〇, which is the proper illuminance value and the Y0 is the standard brightness, where the standard brightness γ〇 can be a clear image for human vision The recommended brightness value, but can also be adjusted according to the needs of the user or manufacturer, the better is 1 3 0. The processing unit 13 can obtain a discharge parameter (the discharge parameter is the light intensity supplemented by the flash module) according to the distance and the light amount in a first predetermined ^ ten calculation. Generally, the light amount is in the unit of illumination and The illuminance is inversely proportional to the square of the distance. The first predetermined calculation method is the number of discharges = light intensity = light quantity X distance 2. The processing unit 3 queries the comparison table in the recall unit 14 according to the discharge parameter, and obtains a discharge time. The flash unit 15 turns on the flash according to the discharge time, which can supplement the light required for image acquisition.

200535545 V. Description of the invention (5) When the flash device of the present invention is operated, the image sensing unit 丨 1 captures the daytime image of the image and the automatic exposure unit 12 measures the environmental degree Y1 of the current shooting environment based on the image frame 'The automatic exposure unit 12 determines whether the ambient brightness Y1 reaches the standard brightness Y0. When the ambient brightness Y1 is less than the standard brightness γ0, the automatic exposure unit 12 calculates the amount of light that needs to be supplemented through a second predetermined calculation method, and automatically The focusing unit 113 captures the distance of the subject 20, the processing unit 13 uses a first predetermined calculation method according to the light amount and the distance to multiply the light amount by the square of the distance to obtain the corresponding discharge parameter, and the processing unit 13 uses The comparison table can obtain the corresponding discharge time. The flash module 15 is turned on according to the discharge time to provide insufficient light sources. For example, if the automatic exposure unit measures the ambient brightness n as 丨 丨 〇, + The quasi-brightness Y0 is 130, and the distance of the subject 20 is 丨 · 5 meters. Through the second calculation method 〇〇 (13〇-ii〇) / 130, we can know that the amount of light is Zhao a 77 degree, and then through a first predetermined 77χ 152 may be calculated that the discharge moxibustion child 173 · 25. The above flash device can prevent the flash module from getting warm or overexposed. + Especially please refer to FIG. 2 for a better flowchart of the flashing method of the present invention. The flashing method can be implemented in the flashing device shown in Figure 1. The flashing method includes the following steps: 4 flashing step 90: the image sensing unit 11 captures an image; step 91: the automatic exposure unit 12 learns the target based on the image Ambient brightness; ⑴ 土 >> step 92 ·· The automatic exposure unit 12 compares whether the ambient brightness is small quasi-brightness, if ,, yes, go to step 94, if, no, go to step M ;, not

200535545 V. Description of the invention (6) Step 93: Step 94: Amount of light with enough exposure and automatic exposure; Step 9 5: The predetermined calculation method and the comparison table generation method are discharge Step 9 6: The required light source is only the above It is limited to the specific changes of the present invention and the fine state of the present invention. The flash module 15 is not turned on; the autofocus unit 1 1 3 captures the subject 2 and the distance unit 12 calculates through a second predetermined calculation method that the processing unit 13 is required to capture the distance and the amount of light through the first Once a corresponding one of the discharge parameters is obtained, the discharge time corresponding to the discharge parameter is obtained, in which the first predetermined calculation parameter = light quantity X distance 2; the flash module 15 is turned on according to the discharge time, and a supplementary person is added. It is only a preferred embodiment of the present invention, and the range cannot be used. That is to say, any modification made in accordance with the scope of the patent application of the present invention will still not lose the essence of the present invention, nor deviate from the scope and spirit. Therefore, it should be regarded as a further implementation of the present invention.

Page 10 200535545 Brief description of the drawings [Simplified description of the drawings] Figure 1 is a schematic diagram of a preferred embodiment of the flash device. FIG. 2 is a flowchart of a preferred embodiment of the flash method. Figure 3 is a schematic diagram of a comparison table. Drawing number description: 1 0 0 _ sensing unit 2 0 0-light source processing unit 11-image sensing unit

11 1 Lens 112- Image sensing element 113- Auto focus unit 12- Auto exposure unit 13- Processing unit 1 4-Memory unit 15- Flash module Step 90 ~ Step 96- Process steps of the preferred embodiment of the method

Page 11

Claims (1)

200535545 1 · A flashing device, an image sensing unit separation parameter; including: 'can capture an image of a subject and an auto exposure unit, ^^ # Dou μMountain & A light quantity required for sensing the saponin and according to the image juice out; a processing unit calculating a discharge parameter based on the distance parameter and the light quantity; a flash module coupled to the processing unit and according to the discharge The parameter provides a shooting light source. 2 · The flash device as described in item 丨 of the patent application scope, wherein the flash device includes an auto-focusing unit, and the distance parameter can be calculated *. „3. The flash device as described in item 1 of the scope of patent application, wherein the processing order: 蚪-: bucket is used to calculate the discharge parameter, and the 〆2 =. The difference is that the discharge parameter is equal to the light amount multiplied by The distance parameter '4. The flash device as described in the patent application & item 3, wherein the flash module generates a discharge time of one of the flash modules according to the Mei electric parameter and-comparison table. 5 · Rushen The flash device according to item 3 of the patent fan garden, wherein the flash is equipped with a memory unit for storing the comparison table. 6 ·-A flash method, including the following steps: ^ Α · Provide an image sensing Unit, an automatic exposure unit, a processing unit two and a flash module, the image sensing unit can capture a shooting ^ one of one distance parameter, and the automatic exposure unit is coupled to the image sensing unit Page 12 200535545 6. The patent application scope element, the processing unit can generate a discharge parameter, the flash module is coupled to the processing unit; B. the image sensing unit captures the distance parameter and the automatic exposure unit calculates the shooting location A light quantity is required; C. The processing unit obtains a discharge parameter according to the distance parameter and the light quantity; and D. The flash module generates a shooting light source for shooting according to the discharge parameter. _ 7. The flash method as described in item 6 of the scope of patent application, wherein step A1 further includes step A1: the image processing unit captures an image of the subject and the automatic exposure unit calculates the image based on the image Amount of light. 8. The flashing method as described in item 6 of the scope of patent application, wherein step E further includes step E: a discharge time is generated according to the discharge parameter and a comparison table, and the flash module provides an image based on the discharge time. source of. '9. According to the flashing method described in item 6 of the scope of the patent application, the image sensing unit further has an auto-focusing unit that can calculate the distance parameter of 10 · — a kind of flashing unit, including: a sensing unit, It can capture an image and calculate a distance parameter and a light amount. A light source processing unit is coupled to the sensing unit to provide a shooting light source through the distance parameter and the light amount. ^ ^ 1 1 · The flash device as described in the item No. 丨 0 of the patent application range, wherein the sensing unit includes an auto-focus unit and an auto-exposure unit. 200535545 6. Scope of patent application The auto focus unit can calculate the distance parameter and the auto exposure unit can calculate the light amount. 1 2. The flash device as described in the item No. of claim 0, wherein the light source processing unit can calculate a discharge parameter based on the distance parameter and the light amount, and provide the shooting light source according to the discharge parameter. 1 3 · The flash device as described in item No. 丨 0 of the patent application range, wherein the automatic exposure unit can calculate an ambient brightness Y 1 based on the image and calculate the light amount by a first predetermined calculation method, and the second predetermined The calculation method is light quantity = X (Y0-Yl) / Y0, where X is a proper illuminance value and Υ0 is a standard brightness. 1 4. The flash device as described in item 12 of the scope of patent application, wherein the light source processing unit calculates the discharge parameter in a first predetermined calculation method, and the first predetermined calculation method is discharge parameter = the amount of light X the The square of the distance parameter. 15. The flash device as described in item 14 of the scope of patent application, wherein the light source processing unit generates a discharge time of one of the light source processing units according to the discharge parameter and a comparison table. 16 · A flash method, including the following steps: A · Provide a sensing unit and a light source processing unit, the sensing unit can extract a distance parameter, the light source processing unit is coupled to the sensing unit; B · the sensor The measuring unit calculates a light quantity according to the distance parameter; c. The light source processing unit generates a shooting light source according to the distance parameter and the light quantity. Page 14 200535545 VI. Patent application scope 1 7. The flashing method described in item 16 of the patent application scope, wherein step B1 further includes step B1: the light source processing unit calculates based on the distance parameter and the light amount A discharge parameter and the shooting light source is provided according to the discharge parameter. Page 15