Friday, October 31, 2014

Long Cable to Transmit HDMI Signals

HDMI (High-Definition Multimedia Interface) is an interface standard used for audio and visual equipment, such as high-definition television and home theater systems. HDMI cables are wonderful all-in-one cables that provide high-definition video and sound in a single cable. However, because of their composition they are typically only able to carry signals to about 50 feet (about 15 meters) before they need help to travel farther.

If you'd like to transmit the HDMI signal to 30M, 60M or longer distance, it is not so easy because the frequency of the individual sine waves is such high frequency. As frequencies of the signal increase, the quality of the HD signals degrades. So here we'd present you a solution that can significantly improve HDMI transmission: HDMI Extender.

There are many HDMI extenders on the market. Theoretically extenders that are based on dual Cat5/Cat6 cable can extend HD signals to 250 meters (820 ft), while extenders based on optical fiber can extend HD signals to 300 meters (980 ft). As there later one is more expensive than the former one, it is not widely applied to our home theater systems. So "HDMI extender over cat5/6 cable" is highly recommended. However, not all the HDMI extenders can transmit as long distance as you want. Generally most of the HDMI extenders on the market can only transmit signals up to 60 meters. But fortunately there are some extenders over cat5/6 cable that can transmit to 100 meters or longer. The HDMI extender from VVdeals is the one designed for you. By converting the HDMI signal to TCP/IP protocol, this "HDMI extender over cat5/6 cable" can transmit up to 100 meters when the sender and receiver are directly connected. 

With the help of routers or networking switches, this Extender will extend the HDMI signal to a longer distance for you. For example, if you add one more network switch, the transmission distance will be extended to 200 meters. It is also a HDMI splitter that you can connect one sender with several receivers, such as 4 receivers. Then this HDMI extender over cat5/6 cable will work as a 1x4 HDMI splitter. If you hook up to 8 receivers, it will be a 1x8 HDMI splitter. Therefore you would have found that this extender is really very powerful and practical as it can work as a HDMI splitter over cat5/6 cable. Mini In size, it is portable and elegant. It provides you a perfect solution for your home entertainment system and your engineering project.

Suggestions on Choosing Video Capture Cards

The video capture card can be divided into two types: external video capture card and internal video capture cardTherefore, you have to make your decision about what kind of video capture card you want to use in advance. From my perspective, it is not advisable for you to use an internal video capture card

The reason is that an internal video capture card is completely dependent on USB bandwidth, which will cause a lot of difficulties and problems for you in practice. I firmly believe that you are aware of how slow the USB bandwidth is. In daily life, you must have noticed that your USB mouse moves extremely slowly when you are using your webcam. Therefore, an internal video capture card is not a wise choice. USB dongles have the same issue. 

Honestly speaking, you can never expect to capture 1080p video at 60fps by using your USB ports. It is impossible to happen. What you are likely to get is just around 5fps at 1080p 1:1. You have to fully understand this situation and then you can think about it and make wise decisions. Having taken this situation into considerationI would surely advise you use an internal PCI or PCIe Video Capture CardMy reasons are as follows and you can judge it on your own. 

A PCIe Capture Card uses the PCI-Express slot, which is the basic and essential component of any qualified motherboard. To make it easier for you to understand, the PCI-Express interface is specially designed for the better operation of high-end graphics card. As a result, the data transfer between the CPU, RAM and card is ultra-fast. It is very wise of to use the PCI-Express interface for it will bring a large amount of benefits to you! Now go and buy it for yourself!

Monday, October 27, 2014

Digital Video Recorders and Capture Cards

Compare Stand Alone Digital Video Recorders (DVR) Windows or Linux based and also Capture cards.

What if the difference between common DVR's?

Most recorders are called DVR's being Digital Video Recorders and standalone systems are generally the best as they usually operate on Linux and handle the 24 hour recording and power loss well.

PC Cards are ok: [pro's] they are normally a cheap alternative if you already have a PC and don't mind sharing it with 24 hr recording processes. [Con's] they typically rely on windows and you can have memory allocation, storage and reboot issues.

Stand Alone DVR: [Pro's] they are built for 1 purpose to record, playback, view CCTV cameras. 100% memory and 100% hard drive is for CCTV recording. If Linux based they are very stable and can handle power outages easily.

With PC cards you simply add more cards if the PC and Operating system can handle it.

With standalone they normally come in the option of 4 channels (cameras), 8 channel and 16 channel. Some variations to that but they are the norm. High end systems allow for card expansion, but serious money when you get to those commercial systems.

In Australia many electronic stores like Dick Smiths, Jaycar and some hardware stores Bunnings sell basic home based CCTV packages and there are many, many professional suppliers and installers for basic and intermediate and professional CCTV camera systems.

MONITORS: Try to make sure any system you have allows for a Composite or video out and VGA option so you can watch the cameras using any option of TV, and/or LCD monitor.

NETWORK / Internet: Try to get something with network access, as you never know when it may be handy to watch the cameras from your laptop, or when away from home via a network LAN or WAN over the internet.

Purchase The Cheap Video Capture Cards

Many people are turning to video capture cards in order to save money and still be able to control the video feed that they want to put onto their hard drive. For many, these cards can be used in conjunction with their desktop computer or their laptop as a security surveillance system. This can save a lot of money.

What this mean is your computer can actually become a home security surveillance system. Just by using your computer's port and using a USB 2.0 cable. When it is installed then the images can be converted into digital format.

It can save a lot of money just by using a video capture card. A security system with cameras can be a lot of money if you plan on having a live camera system. Using a card and your computer you can set up your own live video system for a lot less money.

What is great about these cards is that you can record video from many different places. Whether it is a video camera, satellite or cable broadcast these cards work very well. It can also work well with analog or digital signals. The card itself has many different inputs so that you can plug pretty much anything you need into it.

The video capture card will also be able to process video from the television and cable broadcasts. When you do this, you can actually put this video onto your hard drive. Finding the right card that will work best with your computer and your monitor can be tricky, though. You will need to find out what resolution, frame rate and refresh rates your computer and monitor can handle.

A video capture card needs to be installed in your computer. You will need to open the computer case so that you can put it into an open PCI slot on the motherboard. In order to do this you will need a screwdriver. Once you do this you need to restart the computer and install the CD that came with the video capture card.