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1. Using lens with aperture
(LRS series, MS series, SG series, CCTV lens, etc.)

If you use a diaphragm with a diaphragm function, the depth of focus will be deeper. However, the resolution will be lower.
If there is no problem of depth of focus, we recommend opening the aperture as much as possible.

2. Reduce the influence of R and C on the edge of the object.
If there is C face or R face on the edge of the observation object, it may be blurred due to the depth of focus problem.
(For details, please refer to “How to look at the edges of the R side cleanly.”)

There is also a method called binarization when observing only edges in dimension measurement applications and so on.
There are the following two methods for binarizing.

(1) Use transillumination to make a silhouette screen.
(2) Use software binary mode.

If the number of pixels in a camera is high, the resolution will be high. It is very hard to rough the image even if it is enlarged on a personal computer. However, since the data capacity becomes heavy, the data transfer speed to the personal computer will be slow. In other words, screen display in real time tends to be delayed against movement such as focusing and positioning.
PC monitor also has resolution, if it is only for observing on the PC screen and saving the image, there is not much difference in any pixel number, about 2 million pixels is sufficient.
If there are many uses such as applying digital zoom to the saved image, the number of pixels will be dominant.

	1.3 mega pixel	2.0 mega pixel	3.0 mega pixel	5.0 mega pixel
frame rate	slow			fast
resolution	low			high
price	low			high

However, since you can switch the resolution to each camera, please save it at full resolution when observing and saving at low resolution.

<Frame rate and frame switching of each USB 2.0 camera>

model number	GR300BCM2	GR500BCM2
max resolution	2048×1536	2592Ｘ1944
frame rate	6frame/sec　 （2048×1536）	4frame/sec　 （2952×1944）
Resolution switching	2048×1536 1024×768 640×480	2592×1944 1280×960 1024×768

 

We will select the suitable camera depend on your requirements. Please feel free to contact our Technical Advisor.

Adjust the display speed (frame rate) of camera which used with our 3.0 USB microscope by time.

The upper limit is decided and this value takes precedence.
(Even if you change FrameSpeed or the resolution, it does not exceed this limitation)
However, if the processing speed of the camera can not catch up, it will be subtracted from the setting of upper limit value.

■ If there is enough processing speed, the display speed (frame rate) will not change even if the resolution is changed.
<Set resolution to 640 X 480>

< Set resolution to 2532 x 1944>

■If there is enough processing speed, the display speed (frame rate) will not change even if the resolution is changed.

<Set resolution to 640 X 480>

Frame speed is at Super.

Frame speed is at high

Frame speed is at normal

■You can rise the upper limitation by adjusting TIME

If the processing speed is not enough, the frame rate will be decline by adjusting the resolution and Frame Speed with the upper limitation which is set at Time.

<Adjust fixed Frame Speed to 640 X 480>
Frame Speed is at super

Frame Speed is at high

Frame Speed is at normal

Our USB camera is Directshow compatible, we can divert a lot of image processing software.
It can be used if it is Viewer software for Directshow.

In case you do not know whether your camera is compatible with Directshow or not, please check the operation with AMCap distributed free charge by Microsoft Corporation. If it seems to work, it is Directshow compatible camera.
If the camera is supported by Directshow, it is possible that we can use population Viewer software as well as Viewer software released by our company.

With Measure, Viewer software which is standard equipment of USB Microscope, it is possible to shoot every second.

 

 

You can set up how many seconds to shoot on Interval.

 

I just try to use this function to shot the second hand of the watch every second.

I was able to capture the movement of the second hand.

Click this button in the toolbar, the interval setting screen will show up.

 

In addition, our USB microscope uses Directshow compatible USB camera, so software is extensible and it can run with other software.

Besides that, if you would like to know the details of the software, please contact the Technical Support Dept.

。

Including free-to-charge.  There are many types of interval shots available

 

The application software 「Measure」 is standard equipment of our USB camera. However, the limit of Interval is with a minimum of 100 seconds, the maximum number of shots is 999.

 

We also offer optional software that allows for shooting with longer intervals and without any limitations on the number of shots.

 

SOFTWARE FOR 4 SCREENS DISPLAYS　Hi TriggerQ

For me, it will be very convenient for shooting time lapse photography of microscopic activities (bacterial culture, tissue culture, microbial culture, etc.). (Please refer to What’s video time lapse?)

From customers, we sometimes receive requests such as, “I would like to capture and save long-duration videos using a USB camera.”

In this instance, we would like to present several methods for capturing long-duration videos using a USB camera.

 

Utilizing the multifunctional compressed video recording software known as “Hi TriggerREC.”

 

Our company provides the software called “Hi TriggerREC” for use with our USB 3.0 camera, enabling effortless creation of long-duration videos.

 Notable features of “Hi TriggerREC”:

– Possibility to record videos in H.264 compression (.mp4) or uncompressed (.avi) formats.
– A diverse range of additional functionalities, including a snapshot feature for capturing still images at any time and a variety of recording/stop triggers combining external signals and timers, is also included.

You can use the included viewer software that comes standard with the USB camera.

 

With our USB 2.0 camera, you can record using the provided standard viewer software. However, please note that the AVI file format it exports is outdated and has a file size limitation of 2 gigabytes.

 

If you require a shorter recording time, you can use this viewer software. For example, with the 1.3-megapixel type (1280×1024) at 30 frames per second, you can record for approximately 15 seconds.

 

 

 

You can utilize commercially available or free recording software for your USB 2.0 camera.

 

As our USB 2.0 camera can also be used as a DirectShow camera, you can generally record using commercially available or free recording software that supports DirectShow. If you have such recording software, you can verify its compatibility by utilizing our demo unit for recording testing.

 

One well-known free option is the software called “Amcap” provided by Microsoft as a sample program. Please note that it only supports the uncompressed format (AVI) for saving recordings. 

 

 

 

 

You can achieve long-duration recording on a computer using a conversion device

 

While it is not specific to USB cameras, one method is to attach a USB 3.0 converter to a high-definition camera and perform long-duration recording on a PC.

 

By using the GV-USB3/HD device from I-O DATA, you can capture videos with all models of our high-definition cameras.

 

1. Changing the resolution as high as possible.

There is resolution switching in application software.

(However, the resolution is higher, display speed is lower)

2. Adjust video properties.

The format of the setting screen depending on the camera. But, the setting items are roughly the same.

At high, the image quality is reduced

When you check AE, If the outside light is dark, the

image quality decreases

 

If Gain increases, the noise component will be amplified. So, the image quality will decrease.

 

If you increase the brightness too much on software, the noise component will also increase.

Basically, it is recommended to set the external lighting to sufficient brightness, uncheck the AE (auto white balance) and reduce gain as much as possible.

Flicker is a phenomenon that occurs in a screen in which the screen flickers, lines appear on the screen or repeatedly light and dark.

Prevention methods are as follows:

1. Change the frequency in Property to be able to synchronize with the power frequency and fluorescent lamp.

2. If there is noise from a fluorescent lamp or power supply, please talk to the customer to remove it.

3. If automatic exposure is applied, try removing AE (Auto Exposure).

By using our software MeasurePro, MeasurePRO – Ex, you can showcross lines.

 

For MeasurePRO and MeasurePRO – Ex, it is possible to show cross lines at optional positions

If you have any questions, please feel free to contact our Technical Advisor.

The upper limit of USB communication speed is decided regardless of PC performance.

For USB 2.0, it is 480 Mbps (= 60 MB / s).

It can not exceed this. (Actually, 60% of this number does not come out.)

Of course, there are also ways to stop the resident software (skype, security software, etc.) and increase the installed memory, etc., which increases the ability of the CPU on the PC side.

 

You can also raise the frame rate with the setting on the camera.

・Increase shutter speed

Please check the setting screen on the camera. There are items to adjust the shutter speed. (Depending on camera of each company, time,   exposure time, etc, the function will change.)

Please set this as soon as possible. (In that case the screen will be dark, please make the lights as bright as possible.)

<Pls look at the setting screen of our viewer software>

・Stop feedback

Depending on the camera, automatic exposure (AE) and real-time white balance may be set.

Turning this off and setting it to manual setting, feedback time can be shorten.

<Please look at the setting screen of our viewer software>

・Decline the resolution

If it is a CMOS camera, the resolution can be switched. The resolution will be lower if full resolution is not required.

・Change CMOS camera to CCD camera

This is not actually going to be faster. When you compare with the same resolution, the speed will be increased. (Actual easier to see.)

(Please refer to “What’s the difference between CCD and CMOS?”.)

・Video format also affects to the speed

For YUY 2, RGB 24, the camera will send the data to the PC.

On the other hand, video formats such as RAW 8 and RAW 16 send data directly to the PC and build the video on the PC side.

Although a burden is imposed on the PC side, if there is sufficient ability on the PC side, the display speed of the picture increases.

 

Of course, changing from USB 2.0 to USB 3.0 will make it overwhelmingly faster.

Recently, in addition to just USB 3.0, there is also a camera of the “USB 3 Vision” standard, not only the display speed but also the stability is greatly up.

(Please refer to “What is USB3Vision”.)

 

The concept of “shutter” does not exist in industrial cameras as it does in consumer cameras. Instead, industrial cameras employ the idea of controlling “exposure time” and “frame rate” separately, rather than simply “taking a shutter shot.” The exposure time in industrial cameras is similar to the shutter speed of consumer cameras.

In the case of industrial cameras, the difference in exposure methods results in two categories: rolling shutter and global shutter.

Please consider this as a distinction based on the difference in exposure methods rather than a physical shutter.

 

The difference between rolling shutter and global shutter

 

＜Rolling shutter＞

 

Rolling shutter is also called “line exposure sequential readout”.

Collect one block from one line to one block and obtain the image for each block.

Combine this into one image. Although the inside of the block is simultaneous timing, a slight time difference occurs for each block.

CMOS cameras are generally rolling shutters.

(CMOS devices can read all pixels or read out partial images. Recently, cameras that can switch between rolling shutter and global shutter are also on sale.)

＜Global shutter＞

 

Global shutter is also called “simultaneous exposure all at once”.

Images are acquired at the simultaneous timing of all pixels.

CCD cameras are generally global shutters.

(Because the CCD element can not read out partly, it is inevitably a global shutter.)

 

Differentiating between rolling shutter and global shutter usage

 

I think that the following two points are important for practical use.

(1) When photographing a moving object

(2) When using strobe lighting

 

(1) When photographing a moving object

 

 

Try shooting while moving the following objects.
Global shutter（CCD）	Rolling shutter（CMOS）
Since the shooting time of the rolling shutter is shifted from block to block, the image skews. In addition, CMOS also generates a large afterimage. Try shooting while moving the following objects.
Global shutter（CCD）	Rolling shutter（CMOS）

 

When capturing moving subjects, global shutter is more suitable.

(2) When using strobe lighting

If you use a camera with a rolling shutter for flash photography, there may be instances where only a part of the screen lights up or certain areas are not captured.

 

 

Let’s try capturing the subject in the photo below using a camera with a rolling shutter for flash photography.

 

 

 

		The phenomenon of certain parts not being captured.
		The phenomenon of only a specific portion being illuminated.

 

When it comes to flash photography, global shutter is more suitable.

Considering the two points mentioned above, global shutter seems to be the better choice. However, rolling shutter also has its advantages.

The benefits of rolling shutter are as follows:
– Lower manufacturing cost
– Easier implementation of high resolution

 

■ Our Camera Lineup

– All of our high-resolution cameras with 10 million pixels or more are equipped with a rolling shutter.

– Our USB cameras come in 400,000 pixels, 1.3 million pixels, and 2 million pixels, all featuring a global shutter.

– We also offer global shutter models with 3.2 million pixels and 5 million pixels, but they are exclusively available in the GigE interface and come at a significantly higher price.

Allow us to introduce some of our cameras, including the global shutter models. (Please note that we have a wide range of other camera options available as well.)

<Global Shutter Camera Models>

 

Name	Color and Monochrome	Pixel count	Shutter type	FPS	Interface	Price (excluding tax)
CS41-C	Color	400,000 pixels	Global	120fps	USB3.0	69,000 JPY
CS41-B	Monochrome	400,000 pixels	Global	120fps	USB3.0	69,000JPY
CS500U-GC	Color	5MP	Global	59.8fps	USB3.0	110,000JPY
EG320-C	Color	3.2 million pixels	Global	37.5fps	GigE	115,000JPY
EG320-B	Monochrome	3.2 million pixels	Global	37.5fps	GigE	115,000JPY
EG501-C	Color	5MP	Global	24.1fps	GigE	157,000JPY
EG500-B	Monochrome	5MP	Global	23.5fps	GigE	157,000JPY

 

<Rolling Shutter Camera Models>

 

 

Name	Color and Monochrome	Pixel count	Shutter type	FPS	Interface	Price (excluding tax)
CS500-C	Color	5MP	Rolling	44.7fps	USB3.0	71,000JPY
CS500-B	Monochrome	5MP	Rolling	31fps	USB3.0	71,000JPY
CS1200-C	Color	12MP	Rolling	30fps	USB3.0	99,000JPY
CS1200-B	Monochrome	12MP	Rolling	30fps	USB3.0	99,000JPY
CS2000-C	Color	20MP	Rolling	14fps	USB3.0	110,000JPY
CS2000-B	Monochrome	20MP	Rolling	14fps	USB3.0	110,000JPY

 

 

We have compiled a video summarizing the differences between rolling shutter and global shutter in our company. Please refer to the video for more information. 

 

 

 

Summary: 

In industrial cameras, rolling shutter and global shutter refer to the difference in exposure methods rather than physical shutters.
Rolling shutter, known as “line exposure sequential readout,” is commonly found in CMOS cameras.
Global shutter, known as “simultaneous exposure simultaneous readout,” is commonly found in CCD cameras.

(1) When capturing moving subjects and (2) when performing flash photography, global shutter is more suitable.

 

Windows Embedded is a generic term for operating systems families with objects that are installed by Microsoft devices.

For OS system, it changes depending on which driver / function is installed in the OS can not be used or not.

Based on the information mentioned above, I think there are few USB cameras officially stating that Windows Embedded is compatible.

However, if your embedded Embedded OS has a driver that recognizes the imaging device, you can use the USB camera just like a normal OS.

 

In fact, some customers are using our  DN 3 series.

 

USB3.0 camera DN3 series

 

Have you ever felt that the screen display is very slow when using a USB camera?

 

For example, “Screen does not change for several seconds”, “Freeze well”, and so on.

Actually, the PC’s ability is very high, even if the empty memory capacity is sufficient there is a possibility of occurrence.

 

The reanson is compatibility between PC and camera.

“Compatibility” is abstract, so I will explain it.

 

USB camera consists of a sensor section and a buffer (memory section).

Sensor sends video data to memory at pixel clock (frequency).

Video data is saved in the data memory by overwriting.

(Memory is very large, some types are not all overwritten.)

 

On the other hand, USB host controller will receive the signal.

(You can check with PC’s device manager.)

There is a so-called Polling Rate or Frequency of Receiving Data

 

Drop in pixel clock and polling rate unmatching. Therefore, when the image increases, it gets slow. In this case, the image display may be delayed extremely.

 

Some USB cameras can also change the pixel clock. In addition, the number of missed frames may be displayed.

 

You can maximize the performance of your PC and USB camera by adjusting the pixel clock while confirming the number of missed frames.

(Of course, the frequency and the display speed are higher if no images are lost)

 

We also sell USB cameras that can adjust the pixel clock.

Please refer here.

 

USB 2.0 standard cable is up to 5 m.

In fact, cables excessed this standard are sold by major manufacturers.

(It is said that there is not much effect on the communication speed up to about 10 m.)

Not only the standard extension cable but also other types as below are also sold

It is “USB cable with repeater function”.

Although there are a lot of companies sells it, the product shows in below photo is KB-USB-R212 from Sanwa Supply Co., Ltd【12m USB extension repeater cable】

According to the standard of USB cable, the length of the cable is determined to be the longest 5 m between the devices.

However, by using “USB cable with repeater function”, you can connect devices with 5 m or more cable.

In below photo, this cable can be extended by 12 meters.

 

This cable has a built-in signal amplification correction circuit. By restoring the signal attenuated by this circuit, it is possible to extend the cable.

This cable can be extended by 12 m or more. In that case, wire as shown below.

I tried using 12 meters of repeater equipped USB cable (photo below) and camera attached cable (1.8 m) to our USB camera but it worked well without any problem. However, there is a sentence in the explanation of the USB cable with repeater function (product of the photograph) that “USB device to be connected recommends a device that operates with self power in order to perform stable operation”.

 

Voltage drop will occur when the USB cable is extended. So, it is recommended that you always check the operation on devices that operate by supplying power from the PC (including our USB camera).

 

By the way, USB 3.0 is supposed to be up to 3 m.

Since USB 3.0 standard does not allow cable relaying, it is safe to avoid relaying with extension cable within 3m.

I think that it is better to use a repeater cable or relay the HUB as described above.

However, we recommend a repeater cable and HUB with self power (with AC adapter).

 

Recently, there is also an active cable.

IC for signal conditioning is built in the connector part and extension is made possible without preparing another power supply.

 

The frame rate is the number of frames to be processed per unit time in video. It is usually expressed as a number per second and uses the unit of fps (frame / sec).

 

For USB, the upper limit (the maximum value on the theoretical value) is determined regarding to PC function.

USB 2.0 is 480 Mbps (= 60 MB / s)

USB 3.0 is 5120 Mbps (= 640 MB / s)

 

 

If it is a USB camera with USB 2.0, theoretically

If color data of 1.3 million pixels (1280 X 1024), it is about 15 fps

If it is color data of 2 million pixels (1600 X 1200), it is about 10 fps

If color data of 3 million pixels (2048 X 1535), it is about 6 fps

. (It will not change significantly with camera performance or price.)

 

However, It is a theoretical value, it varies greatly depending on the capabilities of the CPU, memory and other environments (eg: regular software).

Actual measurement seems to be mostly about 60% or less of the theoretical value.

Among them, there is also a way to raise the frame speed slightly.

(Refer to “How to Increase the Frame Speed”)

 

The mechanism of video is simply a “Flip Book”.

The one used for piece by piece of the “Flip Book” are “Images”.

 

For example, if you have a resolution of 1920 x 1080 (full Hi-vision) “30 frames / sec”, you need 1800 images in 1 minute.

If you make this as a video, it will become a huge file size of 15 GB in 3 minutes.

 

Therefore, it is common to use resolution of about 640 × 480 (300 thousand pixels) when saving with uncompressed file (extension AVI etc.).

(Nevertheless, it will be about 1 MB in 1 second.)

 

If you can not reduce the resolution, you will have to reduce the file size by compressing each image using the “compression algorithm” called “codec”.

Currently, “codecs” are common used as H.264, VP9.

The extension of video files with H.264 is compressed by MP4. The extension of video fileswith VP9 is compressed by webm.

 

By the way, licensing fee will be incurred as H.264 contains patents.

For that reason, there are hardly any things that can be saved as video with MP4 files with free software that has a video recording function.

(There seems to be many uncompressed AVIs.)

Some DirectShow-compatible USB cameras also have several video formats such as: YUY 2, RGB 24, RAW 8 etc.

 

Basically, if you use DirectShow compatible USB camera, you can use it even if application software changes.

 

However, it may not be usable because the video format is not supported by this application software.

 

Our cameras will be the video format of RGB 24 if the model number begins with “GR”, and the video format of RAW 8 starting with “DN”.

 

Free viewer software seems to be relatively compatible with RGB 24.

 

I have a question that how to record video with a USB camera.

There are some products that match to RGB 24 including free software. Please take a look.

However, there is small products that match to RAW8. We can divide into 2 types as follows:

 

1. Amcap
It is a sample software of DirectShow SDK. It is software for device testing and copyrighted by Microsoft Corporation.
There are sites that arrange and sell but basically it is free software.
It is only recording with AVI (uncompressed) file. Because it is uncompressed, the size of the saved file becomes large.

 

2. CCI-Pro-MRIt is free software. Up to 4 cameras can be controlled simultaneously.

Here you can take pictures and record videos.

However, the number of cameras that can shoot at the same time, the resolution depends on the performance of the PC and is not guaranteed.

* Please refer to the precautions when using multiple USB cameras with one PC.

 

3. intelliviewer (Three Imaging Inc.)

It is paid software. It is software which can guarantee operation with our camera.

It is multifunctional software with measuring function and tiling function.

Only AVI (uncompressed) files are recorded.

Although it is expensive software (price 98,000 yen), I think whether it should be used other than the recording function.

Our company also sells spare part board of USB camera

Basically, it is the same as case board (28 x 28 mm).

USB2.0 type		USB3.0 type
USB 2.0 board camera　 (Color / monochrome)		USB 3.0・USB3 Vision board camera (Color / monochrome)

 

The lens mount is C mount (M 25.4) to S mount (M 12).

There is a USB port and an I / O connector at the same position as tthe back of the case

It changes greatly with the frame rate of USB camera.

 

If the Viewer software attached to our DN series, the measured value of the frame rate will be displayed in the lower row. (It is actually measured value, not theoretical value.)

In the above example, the actual frame rate is 41.94 frame / sec.

 

The maximum number of sheets can be taken is 90% of this value.

 

It becomes 41.94 × 0.9 = 37.7. In this case, you can save up to 37 images / sec.

 

However, the following two conditions are necessary.

· There is no count up of the above bad frame (blue circle part).

· The delay time is 0 ms

If fps increases, you can save more.

 

· Decrease resolution

· Increase the number of clocks (no bad frame occurs)

· Change USB2 to USB3

 

Voltage specification of external trigger

· The input voltage is 3.3 V to 24 V. In case

· Set the input pulse width to 5.1 μsec or more.

· The delay from the input of an external trigger to the start of exposure is several μsec.

How to display the image on the PictureBox instead of another tab (using the attached SDK)?

 

If you use the sample program of SDK, the image will be shown in a separate window.

 

If you want to display in PictureBox inside Form,

Please refer to API manual page.

int iCube SDK_Start (int nCamIndex, HWND ImgHandle, bool Preview, bool Callback)

With the function above, an image is displayed on the PictureBox by using the handle of PictureBox for HWND ImgHandle.

 

Example:
DDX_Control(pDX, IDC_PIC, m_pic);
nStat=ICubeSDK_Start(g_iCurrentCam,m_pic,true,true);

Display the image according to the size of PictureBox:

Example:
DISP_PROPERTY disp_prop;
ICubeSDK_SetDisplayMode(nCamIndex,DISPLAY_FIT_TO_WINDOW, disp_prop);

There is Linux folder in the CD of our USB camera (DN 2 / DN 3 series).

There are also drivers for Linux

 

In this case of Linux, this driver does not always support all.

(Sometimes it does not work.)

 

There are two suppoting methods as following:

 

1. Let’s the customer try this driver software.

(Please use free demonstration equipment.)

 

2. Please inform us your Linux environment. In this case, it is necessary to provide following information:

(1) Kernel (Kernel) version

(2) Distribution version (Fedora 14, Ubuntsu 14, etc.)

(3) CPU (Core-i, Atom, ARM-processor, etc.)

 

(Note) It does not match to UVC which recognizes the camera immediately under Windows or sV4L (Video for Linux) under the Linux environment.

 

Our camera is DirectShow compatible camera.

By installing a driver to your PC, the images will be displayed with

 Viewer software that runs on windows.

 

(1) Of course, it works with Viewer software attached to the camera.

 (2) It works even with the application attached to another camera.

Basically, you can see if running with AMCAP whether DirectShow-compatible camera.

This is Viewer software distributed free by Microsoft for engineers. (If you can install with AMCAP, DirectShow compatible camera is suitable too)

(3) Our camera also shows the images with AMCAP.

However, it may not be reflected in the setting on the application software.

In that case, you need to modify the application program. (It is necessary to pay attention for dedicate software)

(4) You can recognize our camera through these application software. But, the image does not show.

The biggest reason is to make video format diffrences.

 

There are several types of video formats.

YUY 2, RGB 24, RAW 8 … When making applications in order to match with various cameras, we will produce it so that it can deal with general video formats.

Since the above software does not support to RAW 8, our camera does not show. (Our video format of the USB camera DN series is RAW 8.)

 

For DirectShow-compatible cameras, if you modify video formats clearly, it seems to work in many cases.

DirectShow is a collection of instructions, functions and conventions that can be used for conversion libraries and programs of videos provided by Microsoft.

In a very brief explanation, it means directshow compatible camera can operate with a common command (programmed).

 

If PC recognizes USB camera, the application software can operate without using the one attached to the camera.

(It may be necessary to separately require the PC to recognize the camera.)

 

In other words, you can use application software from another company. (Due to common instructions (programmed).)

You can obtain and use necessary software according to the application such as: Viewer software, measures images software, automatic visual inspection software, 3D synthesis software, and so on.

There are various companies that actually sell only software.

 

However, there are several types of shadow image format output from the camera and it is necessary for the application software to support this video format.

Video formats include YUY 2, RGB 24, RAW 16, etc.

Those sold only by software cover a typical video format but some of these items attached to the camera correspond only to the video format of that camera.

USB Microscope is a microscope that connects to a personal computer using USB cable and display the resolution on the screen.

The advantage is that you can observe with a personal computer and save images easily. In addition, it is possible to do various functions such as measurement, focus synthesis, binarization, etc. Since USB microscope use Directshow compatible camera. Thus, other company’s Directshow compatible software can be used.

The disadvantage is that the display speed will be slowed in proportion to the resolution since it depends on USB communication speed. It is possible to record a video. However, frames may be dropped.

We have various USB microscopes available.

 

	3.0 mega USB Microscope（CMOS） TG300PC2
	CCD 1.4 mega USB Microscope TG140CCD
	USB3.0 microscope（CMOS） TGR350PC

 

* We also offer high magnification and low magnification microscopes. You can choose the resolution of the camera. So, please contact our technical support for details.

Difference between USB 3.0 and USB 2.0

・10 times transfer rate: 350 MB / s

・Upward compatible with USB 2.0

・Maximum cable length 3 m

The basic parts are shown.

 

USB3 Vision was produced as “camera interface standard using USB 3.0” that can be used safely for agriculture, industrial and machine vision.

(There was no standard camera interface for USB 2.0.)

 

The advantage points of machine vision are:

・Stability

・High-speed data transfer

・Reliable data transfer

・Stable recovery from communication error condition

Robustness (vs. Connector)

・Reliable mating

・Secure fixing to the housing

We aimed to be built.

 

There is a function to resend a packet when a communication error (packet dropped) occurs.

→ This will almost eliminate screen freezing that occurred with USB 2.0.

 

The image was saved as “camera → memory via CPU → camera → memory”.

→ You can reduce the CPU load.

(“direct memory access”, “zero copy mechanism”, “DMA”, etc. are made by other manufacturers)

 

In addition, the screw lock function is also adopted as the connector.

Stability and speed are equal or higher than GigE camera.

In addition, the price will be cheaper than the GigE camera.

 

There was also a disadvantage that maximum cable length was 3 m, but recently cable for machine vision using optical fiber has been on sale and can be used with more than 10 m.

 

USB3 Vision logo is attached to the camera conforming to this standard.