CN110516490A - Handheld terminal and its light filling lamp control method - Google Patents
Handheld terminal and its light filling lamp control method Download PDFInfo
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- CN110516490A CN110516490A CN201910654989.0A CN201910654989A CN110516490A CN 110516490 A CN110516490 A CN 110516490A CN 201910654989 A CN201910654989 A CN 201910654989A CN 110516490 A CN110516490 A CN 110516490A
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- light
- compensating lamp
- brightness
- luminous intensity
- environmental light
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- 238000000034 method Methods 0.000 title claims description 20
- 230000007613 environmental effect Effects 0.000 claims abstract description 90
- 230000003287 optical effect Effects 0.000 claims abstract description 17
- 238000005286 illumination Methods 0.000 claims description 5
- 239000000523 sample Substances 0.000 description 25
- 230000000875 corresponding effect Effects 0.000 description 14
- 238000004458 analytical method Methods 0.000 description 2
- 230000002596 correlated effect Effects 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010191 image analysis Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10366—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the interrogation device being adapted for miscellaneous applications
- G06K7/10376—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the interrogation device being adapted for miscellaneous applications the interrogation device being adapted for being moveable
- G06K7/10386—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the interrogation device being adapted for miscellaneous applications the interrogation device being adapted for being moveable the interrogation device being of the portable or hand-handheld type, e.g. incorporated in ubiquitous hand-held devices such as PDA or mobile phone, or in the form of a portable dedicated RFID reader
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/74—Circuitry for compensating brightness variation in the scene by influencing the scene brightness using illuminating means
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K2007/10524—Hand-held scanners
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- Engineering & Computer Science (AREA)
- Toxicology (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Artificial Intelligence (AREA)
- General Health & Medical Sciences (AREA)
- Electromagnetism (AREA)
- Computer Vision & Pattern Recognition (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Image Input (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The present invention provides a kind of handheld terminal, which is characterized in that including a camera and a light compensating lamp, camera is to acquire bar code, and light compensating lamp is to carry out light filling to bar code, and light compensating lamp is preset with multiple luminous intensity levels；One optical sensor, to acquire environmental light brightness information, and environmental light brightness is first divided into multiple environmental light brightness grades in advance to correspond to multiple luminous intensity levels of light compensating lamp；One control unit, to adjust the luminous intensity of light compensating lamp according to environmental light brightness information, so that the luminous intensity of light compensating lamp matches with environmental light brightness, to improve barcode scanning speed.
Description
Technical field
The present invention relates to a kind of handheld terminal and its light filling lamp control method, espespecially a kind of light compensating lamp brightness is adjustable hand-held
Terminal and its light filling lamp control method.
Background technique:
A kind of existing handheld terminal (PDA) comprising a scanning engine and a main control chip, display screen and
A light sensor under display screen, scanning engine are used to obtain bar code, which is provided with headlamp and are used to illuminate, light
Sensor is used to obtain environment light, and to adjust the brightness of display screen according to environment light, main control chip is obtained by scanning engine
The brightness of bar code image perceive the brightness of environment light, and then time for exposure when adjusting the bar code of subsequent acquisition, to obtain
Clearly bar code image, this process are commonly referred to as the automatic exposure convergence process of scanning engine.However pass through bar code image
Come the brightness power consumption that perceives environment light, very high, speed is also relatively slow for brightness, and in barcode scanning environment frequent switching, slow-footed defect is more
It is significant；And under half-light or light environment, when lighting brightness is fixed, even if the time for exposure of scanning engine is adjusted
To maximum or minimum, it is still unable to get clearly bar code image.
The present invention is in view of the above problems, provide a kind of new handheld terminal and its light filling lamp control method, using new side
Method and technological means are to solve these problems.
Summary of the invention
For background technique problem encountered, it is adjustable that the present invention created is designed to provide a kind of light compensating lamp brightness
Handheld terminal and its light filling lamp control method.
To achieve the above object, the present invention uses following technological means:
The present invention provides a kind of handheld terminal characterized by comprising a camera and a light compensating lamp, camera to
Bar code is acquired, light compensating lamp is to carry out light filling to bar code, and light compensating lamp is preset with multiple luminous intensity levels；One illumination sensing
Device, to acquire environmental light brightness information, and environmental light brightness is first divided into multiple environmental light brightness grades in advance to correspond to light compensating lamp
Multiple luminous intensity levels；One control unit, to adjust the luminous intensity of light compensating lamp according to environmental light brightness information, so that
The luminous intensity of light compensating lamp matches with environmental light brightness.
Optionally, the luminous intensity Yu environmental light brightness of light compensating lamp are negatively correlated.
Optionally, control unit is to be arranged the exposure parameter that camera acquires bar code according to environmental light brightness.
Optionally, a display screen, to show bar code information, optical sensor is set under display screen, when display screen is opened
Optical sensor starts to acquire environmental light brightness information.
Optionally, brightness of the control unit also to adjust display screen according to environmental light brightness information.
When optionally, control unit is to according to environmental light brightness information adjusting camera acquisition first frame bar code image
Light compensating lamp brightness.
Optionally, control unit acquires the second frame bar code figure to adjust camera according to the luminance information of first frame image
As when exposure parameter.
Optionally, when carrying out light filling using corresponding light compensating lamp luminous intensity under current environmental light brightness, camera can be adopted
Collect bar code image clearest under current environmental light brightness.
Optionally, camera and light compensating lamp are integrated on scan head.
The present invention provides a kind of light filling lamp control method of handheld terminal as claimed in any one of claims 1-9 wherein,
It is characterized in that, comprising the following steps: step S1: presetting multiple environmental light brightness grades and multiple light compensating lamp luminous intensity levels,
Keep preset multiple environmental light brightness grades corresponding with multiple light compensating lamp luminous intensity levels；Step S2: optical sensor is adopted
Collect environmental light brightness information；Step S3: the luminous intensity levels of light compensating lamp are arranged according to environmental light brightness information in control unit,
So that the luminous intensity levels of light compensating lamp match with environmental light brightness grade.
Compared with prior art, the invention has the following advantages:
Light compensating lamp is default there are many luminous intensity levels, and environmental light brightness is first divided into a variety of environmental light brightness grades in advance with right
A variety of luminous intensity levels of light compensating lamp are answered, control unit adjusts the luminous intensity of light compensating lamp according to environmental light brightness information, makes
The luminous intensity for obtaining light compensating lamp matches with environmental light brightness.Due in advance by the luminous intensity levels of light compensating lamp and environment bright
It is corresponding to spend grade, therefore after measuring current environmental light brightness grade, can corresponding luminous intensity quickly be set by light compensating lamp
Grade improves speed；And using optical sensor acquisition environmental light brightness information compared to the bar code figure acquired by probe
For analysis environmental light brightness, power consumption is lower.It is preparatory by optical sensor and in the case where barcode scanning environment frequent switching
Environmental light brightness information is acquired, also can be further improved barcode scanning speed.
Detailed description of the invention
Fig. 1 is handheld terminal perspective view of the present invention；
Fig. 2 is the perspective view of probe of the present invention；
Fig. 3 is the block diagram that handheld terminal of the present invention acquires bar code；
Fig. 4 is the flow chart of the light filling lamp control method of handheld terminal of the present invention.
The drawing reference numeral of specific embodiment illustrates:
Specific embodiment
Purpose, structure, feature and effect to facilitate the understanding of the present invention etc., now in conjunction with attached drawing and specific implementation
The invention will be further described for mode.
As shown in Figure 1 to Figure 3, handheld terminal 100 of the present invention has multiple functions to reading bar code, handheld terminal 100
Module mainly includes 1, display screen 6 of a probe, the optical sensor 7 under display screen 6 and passes through circuit connection
The control unit 8 of each functional module, in the handheld terminal 100 of the present embodiment, control unit 8 is main control chip.
Probe 1 includes the camera 2 and a light compensating lamp 5 integrated, and camera 2 includes 3 He of camera lens
One imaging sensor 4, camera lens 3 are used to be imaged, imaging sensor 4 then by camera lens 3 at picture carry out photoelectric conversion, and by telecommunications
Number being transmitted to control unit 8 is further processed.In the present embodiment, a light compensating lamp 5, light filling are integrated on probe 1
Lamp 5 is to carry out light filling when probe 1 acquires image；In other embodiments (not shown, similarly hereinafter), the quantity of light compensating lamp 5 can
Can be separately positioned with probe 1 for multiple or even light compensating lamp 5, without being integrated with probe 1.Light compensating lamp 5 is preset with more
Luminous intensity levels are divided into initially by a luminous intensity levels such as on the basis of the initial beam intensity of light compensating lamp 5 (most dim light is strong)
1 to 10 times of light intensity, ten grades of light intensity；The luminous intensity of light compensating lamp 5 can also be divided in other embodiments according to actual needs
Grade.Different 5 luminous intensity levels of light compensating lamp can be generated by the different luminous powers of a light compensating lamp 5, can also be by multiple
Different number combinations generate in light compensating lamp 5.
Display screen 6 and optical sensor 7 are usually matching used functional module, and display screen 6 is generally touch screen, to
Information or display information are inputted for user, optical sensor 7 can basis to acquire environmental light brightness information, control unit 8
Current environmental light brightness information adjusts the brightness of display screen 6, i.e., the bright of display screen 6 is improved when environmental light brightness is brighter
Degree reduces by 6 brightness of display screen when environmental light brightness is darker.
Control unit 8 can further adjust the luminous intensity of light compensating lamp 5 according to ambient light information.Due to handheld terminal 100
Environment light is usually perceived by probe 1, i.e., image is acquired by probe 1, and then image letter is analyzed by control unit 8
It ceases and obtains the luminance information of environment light, when this process is usually 100 reading bar code of handheld terminal a attaching step is used
To adjust time for exposure when next image frame grabber according to the brightness of previous frame image, this has to probe 1 and is in work
Make state, and can not learn that probe 1 acquires the environmental light brightness before first frame image, i.e., does not work in probe 1 without adopting
Environmental light brightness can not be perceived when collecting image.So in the embodiment of the present invention, being sensed by illumination matched with display screen 6
Device 7 acquires environmental light brightness information, since the power consumption of optical sensor 7 only has 1/the tens of probe 1, thus can be with
Power consumption is reduced, and optical sensor 7 can i.e. acquisition environmental light brightness information, usual illumination pass in advance before the work of probe 1
Sensor 7 starts to acquire environmental light brightness information when display screen 6 is opened, and control unit 8 can be according to environment light gathered in advance
Luminance information is such as arranged probe 1 and acquires first frame image exposure parameter when probe 1 acquires first frame image is arranged
When 5 brightness of light compensating lamp, can shorten probe 1 reach exposure convergence balance time, improve decoding speed.
Environmental light brightness is first divided into multiple environmental light brightness grades in advance to correspond to multiple luminous intensity levels of light compensating lamp 5,
Brightness to the dark surrounds of summer noon sun direct projection environment is such as divided into 1 to 100 environmental light brightness grade, so that mending
1 to 10 grade of 5 luminous intensity of light lamp is corresponded with 1 to 10 grade of environmental light brightness respectively.Due to light filling in other embodiments
The luminous intensity levels of lamp 5 not necessarily ten grades, therefore environmental light brightness grade can also be divided according to practical application scene,
And not necessarily ten grades.
After environmental light brightness grade classification determines, then the environmental light brightness of actual environment locating for handheld terminal 100 is equal
There is corresponding environmental light brightness grade to be corresponding to it；Test of many times is carried out to the environmental light brightness of each grade, it is every to obtain
Corresponding suitable 5 luminous intensity of light compensating lamp of one environmental light brightness grade, so that the environment bright locating for handheld terminal 100
When carrying out light filling using corresponding 5 luminous intensity of light compensating lamp under degree, probe 1 can collect clearest under current environmental light brightness
Bar code image.It is understood that the brightness of the luminous intensity of light compensating lamp 5 and environment light is negatively correlated, i.e. environment light
The luminous intensity of light compensating lamp 5 needed for brighter display is weaker, conversely, the environmental light brightness the weak, the hair of the light compensating lamp 5 needed
Luminous intensity is stronger.With 5 luminous intensity levels of light compensating lamp of the environmental light brightness grade of ten grades above and ten grades
For, corresponding 1st grade of 5 luminous intensity of light compensating lamp of the 1st grade of environmental light brightness, corresponding 2nd grade of the 2nd grade of environmental light brightness
5 luminous intensity of light compensating lamp, and so on.
As shown in figure 4, the flow chart of 5 control method of light compensating lamp for handheld terminal 100 of the present invention, this method comprises:
Step S1: 5 luminous intensity levels of multiple environmental light brightness grades and multiple light compensating lamps are preset, preset multiple rings are made
Border brightness level is corresponding with multiple 5 luminous intensity levels of light compensating lamp.
Preset 5 luminous intensity levels information of light compensating lamp and environmental light brightness class information can be stored in advance,
For calling.5 luminous intensity levels of light compensating lamp and the presetting method of environmental light brightness grade can refer to noted earlier.
Step S2: optical sensor 7 acquires environmental light brightness information.
Specifically, user first turns on display screen 6, and optical sensor 7 starts automatic collection environmental light brightness information,
Control unit 8 receives environmental light brightness information and is handled, and probe 1 is also in standby mode at this time, to reduce power consumption.
Step S3: according to environmental light brightness information the luminous intensity levels of light compensating lamp 5 are arranged, so that light filling in control unit 8
The luminous intensity levels of lamp 5 match with environmental light brightness grade.
Specifically, after the analysis of control unit 8 obtains current environmental light brightness grade, the light compensating lamp 5 of storage will be called
Luminous intensity levels information is configured the luminous intensity of light compensating lamp 5 so that starting probe 1 when light compensating lamp 5 strong light
Degree grade matches with current environmental light brightness grade, with Quick Acquisition to clearly bar code image.
User, which triggers and starts probe 1, scans bar code, when probe 1 acquires first frame bar code image, the hair of light compensating lamp 5
Luminous intensity is the luminous intensity that control unit 8 is arranged according to current environmental light brightness information.Control unit 8 is according to first frame figure
Exposure parameter when probe 1 acquires the second frame image can be further arranged in the luminance information of picture, and exposure parameter specifically may include
Time for exposure, 5 brightness degree of light compensating lamp etc..
Handheld terminal and its light filling lamp control method of the invention has the advantages that
Light compensating lamp 5 is default there are many luminous intensity levels, environmental light brightness be first divided into advance a variety of environmental light brightness grades with
A variety of luminous intensity levels of corresponding light compensating lamp 5, control unit 8 adjust the strong light of light compensating lamp 5 according to environmental light brightness information
Degree, so that the luminous intensity of light compensating lamp 5 matches with environmental light brightness.Due in advance by the luminous intensity levels of light compensating lamp 5 with
Environmental light brightness grade is corresponding, therefore after measuring current environmental light brightness grade, quickly it can set corresponding for light compensating lamp 5
Luminous intensity levels improve speed；And environmental light brightness information is acquired using optical sensor 7 and is adopted compared to by probe 1
For the bar code image analysis environmental light brightness of collection, power consumption is lower.And in the case where barcode scanning environment frequent switching, pass through illumination
Sensor 7 acquires environmental light brightness information in advance, also can be further improved barcode scanning speed.
Detailed description above is only the explanation of the preferred embodiments of the invention, the scope of the patents that is non-therefore limiting to the present invention,
So all, with this creation specification and diagramatic content institute, equivalence techniques change for it, are both contained in the scope of the patents of this creation
It is interior.
Claims (10)
1. a kind of handheld terminal characterized by comprising
One camera and a light compensating lamp, camera is to acquire bar code, and light compensating lamp is to carry out light filling to bar code, and light compensating lamp is pre-
Equipped with multiple luminous intensity levels；
One optical sensor, to acquire environmental light brightness information, and environmental light brightness is first divided into multiple environmental light brightness etc. in advance
Grade is to correspond to multiple luminous intensity levels of light compensating lamp；
One control unit, to adjust the luminous intensity of light compensating lamp according to environmental light brightness information, so that the strong light of light compensating lamp
Degree matches with environmental light brightness.
2. handheld terminal as described in claim 1, it is characterised in that: the luminous intensity and environmental light brightness negative of light compensating lamp
It closes.
3. handheld terminal as described in claim 1, it is characterised in that: control unit is imaged to be arranged according to environmental light brightness
The exposure parameter of head acquisition bar code.
4. handheld terminal as described in claim 1, it is characterised in that: a display screen, to show bar code information, illumination sensing
Device is set under display screen, and optical sensor starts to acquire environmental light brightness information when display screen is opened.
5. handheld terminal as claimed in claim 4, it is characterised in that: control unit is also to according to environmental light brightness information tune
Save the brightness of display screen.
6. handheld terminal as described in claim 1, it is characterised in that: control unit according to environmental light brightness information to adjust
Camera acquires light compensating lamp brightness when first frame bar code image.
7. handheld terminal as claimed in claim 6, it is characterised in that: control unit according to the brightness of first frame image to believe
Breath adjusts exposure parameter when camera acquires the second frame bar code image.
8. handheld terminal as described in claim 1, it is characterised in that: sent out under current environmental light brightness using corresponding light compensating lamp
When luminous intensity carries out light filling, camera can collect bar code image clearest under current environmental light brightness.
9. handheld terminal as described in claim 1, it is characterised in that: camera and light compensating lamp are integrated on scan head.
10. a kind of light filling lamp control method of handheld terminal as claimed in any one of claims 1-9 wherein, which is characterized in that packet
Include following steps:
Step S1: presetting multiple environmental light brightness grades and multiple light compensating lamp luminous intensity levels, makes preset multiple environment light
Brightness degree is corresponding with multiple light compensating lamp luminous intensity levels；
Step S2: optical sensor acquires environmental light brightness information；
Step S3: the luminous intensity levels of light compensating lamp are arranged according to environmental light brightness information in control unit, so that the hair of light compensating lamp
Light intensity level matches with environmental light brightness grade.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410274935.2A CN118153603A (en) | 2019-07-19 | 2019-07-19 | Handheld terminal and light supplementing lamp control method thereof |
| CN201910654989.0A CN110516490B (en) | 2019-07-19 | 2019-07-19 | Handheld terminal and light supplementing lamp control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910654989.0A CN110516490B (en) | 2019-07-19 | 2019-07-19 | Handheld terminal and light supplementing lamp control method thereof |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202410274935.2A Division CN118153603A (en) | 2019-07-19 | 2019-07-19 | Handheld terminal and light supplementing lamp control method thereof |
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| Publication Number | Publication Date |
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| CN110516490A true CN110516490A (en) | 2019-11-29 |
| CN110516490B CN110516490B (en) | 2024-04-26 |
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| CN202410274935.2A Pending CN118153603A (en) | 2019-07-19 | 2019-07-19 | Handheld terminal and light supplementing lamp control method thereof |
| CN201910654989.0A Active CN110516490B (en) | 2019-07-19 | 2019-07-19 | Handheld terminal and light supplementing lamp control method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111339795A (en) * | 2020-03-26 | 2020-06-26 | 上海艾舜杰信息科技有限公司 | Intelligent data acquisition terminal |
| CN111460848A (en) * | 2020-04-01 | 2020-07-28 | 福州符号信息科技有限公司 | Reading equipment capable of identifying bar codes of various materials and color bar codes and identification method |
| CN114401375A (en) * | 2022-03-24 | 2022-04-26 | 深圳市三千米光电科技有限公司 | Infrared laser light filling lamp for intelligent traffic monitoring |
| WO2024098916A1 (en) * | 2022-11-11 | 2024-05-16 | 无锡盈达聚力科技有限公司 | Imaging apparatus and imaging method |
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| CN105574457A (en) * | 2015-12-15 | 2016-05-11 | 东软集团股份有限公司 | Light supplementing method and device for scanning terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111339795A (en) * | 2020-03-26 | 2020-06-26 | 上海艾舜杰信息科技有限公司 | Intelligent data acquisition terminal |
| CN111460848A (en) * | 2020-04-01 | 2020-07-28 | 福州符号信息科技有限公司 | Reading equipment capable of identifying bar codes of various materials and color bar codes and identification method |
| CN111460848B (en) * | 2020-04-01 | 2023-05-02 | 福州符号信息科技有限公司 | Reading equipment and method capable of identifying bar codes of various materials and color bar codes |
| CN114401375A (en) * | 2022-03-24 | 2022-04-26 | 深圳市三千米光电科技有限公司 | Infrared laser light filling lamp for intelligent traffic monitoring |
| WO2024098916A1 (en) * | 2022-11-11 | 2024-05-16 | 无锡盈达聚力科技有限公司 | Imaging apparatus and imaging method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN118153603A (en) | 2024-06-07 |
| CN110516490B (en) | 2024-04-26 |
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