Authors Posts by Frankie Cordova

Frankie Cordova

Frankie Cordova is the founder of CCTVBLOG.COM, your source for CCTV news and video surveillance information. Frankie Cordova has been in the security industry for over 20 years. CCTVBLOG was developed to offer a channel to industry news, insight and technology.

Neighborhoods cameras

Neighborhood security cameras have become very popular over the last decade. Homeowners are looking for added security besides that of their own home. Neighborhood awareness in communities has peaked and local residents are striving to keep neighborhoods safe. With newer technology in HD digital video surveillance neighborhoods can now be covered with wireless technology that can be deployed very easily.


Neighborhood Surveillance Benefits


Resident and visitor Protection – Having HD security cameras installed throughout a subdivision or neighborhood will help keep community members safe and sound.

Vandalism Protection – Many homes and neighborhoods find themselves targets to vandalism, especially in those neighborhoods in urban and dense areas. You can help discourage vandalism by having prominently displayed cameras surrounding your neighborhood and in the event a problem does arise HD security cameras will identify the vandals and help identify them quickly.

Monitoring – Older analog CCTV systems did not allow remote access to the video footage. You basically had to sit in front of the video monitor and manually search for incidents.  Newer digital surveillance systems allow their cameras to be monitored from anywhere in the world there is an internet connection. The community can have full access to the cameras and help monitor the neighborhood together. Alarms and events can even be send to residents in email or push notification so they get real time video of what’s happening.

Community property protection – With many subdivisions and neighborhoods offering community areas such as pools, parks, pools and community centers it is important to monitor these areas. These areas are often susceptible to theft,vandalism, loitering and damage. You can help to eliminate these events by properly installing a surveillance system in these areas.


CCTV Camera Risks in Housing Developments


Privacy Concerns – You want to keep cameras to public areas. Mount cameras on streets and in those common shared areas considered public domain.. Do not point cameras into private residences, and home windows. If you cannot avoid this we suggest you use cameras that provide “privacy masking”, this blocks off that particular area from being recorded or viewed by the camera.

Potential Damage – Any outdoor camera that watches over public areas are susceptible to damage from weather or vandals. We suggest that you use tamper-proof or anti-vandal type cameras to help curb these situations.


Considerations for Subdivision Security Camera Systems

Neighborhoods are a collage and mix of various individuals and cultures. They can vary by town, city, and by geography. There is no one system fits all in this circumstance. A security camera system for one subdivision will likely not work for another neighborhood. We suggest that you consider the following when installing a neighborhood security camera system:

  • Where is your development or neighborhood located?

  • Does your neighborhood attract thieves or vandals?

  • What is your biggest security risk?

  • Have there been past issues with vandalism or theft?

  • What areas of the neighborhood are most vulnerable and need protection?

Neighborhood CCTV Camera Setup Advice


  • Parks, pools and parking areas should be well-covered

  • Hidden cameras can be an option in those areas high in vandalism and crime

  • Consider the lighting for your neighborhood. Do you need cameras with infrared capability for night time use?

Is this a battle of acronyms or a battle of technologies? Let us look at the real importance of these new products and what you should really be buying or selling.

One of the most important features when it comes to surveillance security cameras is the compatibility factor and it’s the one point most vendors do not touch upon when selling surveillance. During the last year there have been many new technologies that have entered the market place and they all want to claim their stake within the security industry. AHD, HDTVI, HD-CVI, and HD-SDI are just some of the latest technologies to enter the market and they are all looking for equal playing time. So what should we look for? What should we buy?

Lets answer these questions differently. Instead of getting into a technical dogfight between the technology differences, lets look at how these technologies can be sold, serviced and offered. There has been a growing trend among many wholesale security distributors to simply purchase the lowest costing system, slap their OEM logo on the product and sell the product in very high volume. This is great for business but is it great for consumers, dealers or installers?

AHD, HDTVI, HD-CVI, and HD-SDI Digital video recorders

The big problem with this philosophy is the tendency to sell inconsistent compatibility. What does this mean? Well, security wholesale distributors may have 9 different DVRs or NVRs, all with different menus, smartphone software and PC software causing a major issue for most. As an example, a vendor may sell 4 and 8 channel HD-TVI dvr systems and cameras from one vendor and sell a 16 camera HD-TVI dvr from another vendor that does not work with the 4 and 8 channel DVRs they already sell. Why? There are many reasons for this but typically, its because the 16 channel ( or 4 and 8 channel dvrs ) may be less expensive from one vendor than the other and the cost difference will dictate the purchase. Even though they are different systems altogether, the point is to sell more, compatibility be damned.

Installers are constantly being bombarded by vendors trying to get them to buy the latest in technology with low prices as their lone bullet. It’s only after they make a purchase that they realize that the DVR and cameras they just bought are different from their predecessors. This makes selling or upgrading systems very difficult for installers. Limited camera models, different digital video recorders and different features narrow down your selling capability and customer options. The very same features and functions you have been selling to your customers are now different and no longer apply. It creates more work and added stress to now sell another product that is completely different from your other offerings.

From a customers point of view a consumer may purchase one system for his home and another for his business and they will both look and work totally different from one another. The PC app and smartphone apps would also be different. This causes nothing but confusion and makes using the systems a chore to say the least. Customers should have the ability to use the same software, menu and apps across the board no matter the technology they use and this is rarely the case. Many security distributors sell based on what they can purchase and resell without considering the ease of use, technical support or product features. What use is carrying or selling HDCVI, HDTVI, AHD, IP, HDSDI and IP cameras if you have a different recorder and software for each technology? Is it not better to have these product fall under the same umbrella and work with same software and phone apps? Dealers would simply have to learn one system no matter the technology and customers can be confident that any of their locations will will be operable from the same software.

This is just one of the various reasons why I decided to start selling and offering surveillance products directly. I cannot control what others sell or offer but I can control what I offer customers, dealers and integrators. A consistent product that simplifies their sales, service and installation.

Carrying a product technology simply because its cheaper or less expensive is the wrong way to go if you can’t offer consistency and compatibility with everything else you sell. Use any acronym you want to sell the latest and greatest but if you can’t deliver a consistent product and service the only acronym you should be using is GOB for going out of business.

4K is coming.

Security surveillance cameras in UHD (Ultra HD) will soon be here.

4K is nothing new, consumers in the electronics market have been getting an earful of 4K for awhile now. 4K surveillance cameras are set to offer resolutions at 3840 x 2160 with high color fidelity in a 16:9 format while using progressive scanning at 25/30 Hz.

Basically 4K offers four times the resolution of standard 1080p camera, while rendering superior image detail and high definition colors. These new cameras are great for large area monitoring, like parking lots, airports, train stations, city streets etc.

New 4K cameras fully adopt a 12.0-Megapixel sensor, complete a high-performance DSP which offers a very high image quality.  The new 4K cameras will offer 12MP (4000 x 3000) at 15 frames per second and 4K at 30 frames per second with a suggested bandwidth rated at 8Mbps, to ensure smooth live viewing; in addition, the new cameras will provide triple streams to use for different applications.

Look for advanced features like ROI, ultra-defog, analytic detentions, including face detection, tripwire, intrusion and scene changes, which can also send alerts to direct to end-users when triggered.

2014/12/31 20:59:16

Infrared thermography (thermal cameras) has often been used to help contain and detect the spreading of other viral diseases such as the bird flu. Recent concerns worldwide has prompted many to look into unique ways of stopping this disease from spreading.

Thermal CameraOne of the methods to determine if someone is sick is elevated human body temperature, or fever. This is reliable indicator of most human viral infections. The outbreak of Ebola has prompted public health authorities worldwide to look for a quick, easy, non-invasive, contactless,  and reliable method to help detect elevated human body temperature differences.

Thermal cameras take an infrared image of a person and measures if his/her body temperature exceeds a certain value. The cameras infrared built-in functions like sound and color alarms can be set to go off when a certain temperature threshold is exceeded, the operator can decide instantly whether the subject needs to be referred for medical examination or not. The infrared camera produces images in real-time, at a rate of 50 Hz, the total evaluation process takes less than a second.

This makes infrared technology very useful for rapidly screening large numbers of people. However, a few things need to be taken into account.

Thermal_Peron_Closeup Thermal_person_normal

images via FLIR

A person’s skin temperature is not equal to the ones core temperature. The most practical area on the body that offers the most reliable result (where the skin temperature nears the core temperature of the human body) is located near the corner of the eyes where the lachrymal duct comes to the surface.

This is why its highly recommended to have subjects right in front of the camera at a specific distance, typically at 1 to 1.6 meters from the camera lens, so that the face fills the entire video image.

The subject only needs to look into the thermal camera for less than a second. Since the highest temperature will be measured at the corner of the eyes, people can still continue to wear a mouth mask or even their headwear without influencing the measurement. Glass and plastic do not transmit infrared radiation, so people need to remove their glasses in order to be examined.

Thermal cameras are most often advised to be set up in locations with long queues such as passport or customs control points as each person should be screened on an individual basis.

This technology is not the perfect solution for determining if a person has Ebola, influenza or any other disease. It is simply one method to help determine if an individual has an elevated temperature that may be caused by one of these diseases.

There are many over the counter drugs that can drastically drop ones core temp and fever such as advil or tylenol and this can easily allow someone to go screened without triggering an alarm.

If you want to walk around with your own personal version of a thermal camera Flir has introduced their Flir One phone case which allows your phone to become a small personal thermal camera that you can take anywhere.

2MP Onvif IP Dome Camera

Today we take a quick look at a cost-effective 2MP IP Dome Camera that was just released. This 2MP network IP Indoor/Outdoor Vandal Dome Security Camera is part of our new Economy IP series cameras that offer a cost-effective solution to High Definition Security Cameras. These ONVIF cameras fully support motion-detection recording that can record at a crisp 1080p resolution. At 2 megapixels the detail of this camera is far superior to 1.3MP cameras and definitely blows away any analog camera you may compare it to. These cameras offer the ability to digitally zoom in during live and recording to offer more detail without the common pixelation you get with analog cameras. This will make the difference between an arrest and not being able to positively identify a criminal due to pixelized image.

This camera supports ONVIF and therefore should work with most ONVIF enabled NVRs on the market.

Opening the Camera

2MP IP Dome Camera how to open camera

The IP Dome camera comes with 3 allen bolts that must be removed in order to adjust the camera. Use the supplied allen wrench in the box to remove the allen bolts and open the camera.


This network IP dome camera offers 30 infrared LEDs which allows for a distance of 100 feet in complete darkness.

2 Megapixel Ip Dome Camera 100ft IR

Lens Adjustment

Adjusting the camera lens on this IP dome camera is very easy. Simply use the adjustment knobs located on the bottom of the dome to zoom and focus the camera accordingly. A simple move to the right and left will begin the focus process and will allow you to easily achieve the desired picture during your installation. Click on the image on the left to see a small video of the adjustments.

Camera Adjustment

The Network IP Dome camera comes with a swivel bracket that allows you to adjust the camera for ceiling or wall mounted installations. Once the camera is installed simply move the camera with your fingers to the desired position. You can move the camera up, down, and even move the camera in a clockwise or counter clockwise motion.

Included Cables and Connectors

The truth is this camera offers an abundance of cable connections. While typical IP cameras tend to offer a single wire connection for network connection, this camera offers: An network connector, audio in connector, audio out connector, a reset button, a USB cable for recording at the camera directly, an alarm input connector and an RS485 connector for remote control. The camera also comes with small mounting screws, anchors, software CD and a manual.




If you interested in this camera here is the link. As always use cctvblog as your coupon code to receive a discount.




Longer Transmission Distance.

Both HD-SDI and HDCVI can transfer HD video @720p/1080p, but HDCVI currently has the distinct advantage of transmission distance. HD-SDI in general transmission of media reaches 100 meters at most, while HDCVI can transmit 500 meters by using 75-3 cable and offers low signal distortion rate.


Figure 1 Transmission Distance Differences

HD-CVI offers better Anti-Interference Capability

Anti-interference capability found in HD-SDI solutions is relatively poor when installed in high-frequent radiation environments. This could lead to higher bit error ratios. HDCVI however, adopts low-frequency modulation technology, which eliminates high-frequency wireless electric radiation that ensures stable video transmission at a high image quality.

Anti-Interference Capability Figure 2 Anti-Interference Capability



HDCVI uses P2P transmission to ensure a reliable and smooth transmission. IP network cameras use Ethernet for transmission and thus may lead to network jitter and packet loss.


Network HD uses video buffer technology and the delay is generally controlled within 300 milliseconds within a common and fair networking environment; However, HDCVI has no latency capability which offers an outstanding real-time performance.

No Compression

HDCVI does not compress video at the camera to maintain its original effect and therefore presents vivid image quality.

IP Cameras vs hd-cvi Figure 3


Lower overall Cost

Unlike HD-SDI, which requires higher demands from cabling and installation; HDCVI solution can use the same coax cabling in place and often used by conventional analog solutions, which offers a great convenience and also helps to decrease cost.

Smart control

HDCVI is able to transmit multiple-signals (video/audio and dual-way data) over one coax cable, it allows for video/audio synchronized transmission as well as reverse-signal transmission control; which further simplifies the installation.



HD-CVI Technology


HDCVI Introduction

HD-CVI offers an HD-Over-Coax Solution with Long-Distance Transmission

The industry is quickly moving from standard definition video to high definition. Customers have many choices when looking for a HD surveillance video and HD-CVI is one of the latest choices to hit the market. HD-CVI which stands for High Definition Composite Video Interface offers customers the ability to use existing coax wiring to upgrade their standard analog systems to HD video resolution.

Why the New Technology?

There is approximately 400 million analog camera systems deployed worldwide. These coaxial cabling based systems continue to dominate today’s video surveillance market. Customers looking to upgrade to High Definition Surveillance Video would typically need to change their existing cabling in order to install a  higher resolution system.

HDCVI is a simple solution for upgrading existing analog systems from standard definition to high definition, while offering longer transmission via coax cable at a lower total cost.


What is HDCVI?

HDCVI is basically a surveillance solution for megapixel HD applications, offering no latency, long-distance transmission at a very low cost. The name derives from its base-band and quadrature amplitude modulation technology, that is able to avoid any CVBS cross talk, completely separate hue signal and brightness, and enhances video quality.
HDCVI surveillance products incorporate both cameras and security DVRs. The CVI system is star topology structured and the DVR serves as a node for an over coax Point-to-Point (P2P) transmission to the camera. Currently the technology comes in 3 resolution sizes: : 1080p (1920×1080), 960P (1280×960) and 720p (1280×720). HD-CVI also offers the Auto Signal Compensation (ASC) patent which allows extremely low signal distortion as well as long-distance transmissions.


Long-distance Transmission

CVI technology allows for transmitting data over 500m over coaxial cable. It is recommended to use 75-3 cable or 75-5 cable for transmissions within 500m, cable 75-5 and above for any distance over 500m. Connectors, splices and can affect the transmission distance.

1 Coaxial Cable – 3 Signals

HDCVI allows for the transmission of video, audio, and control signals (RS485) over one coaxial cable, simplifying installation.

To allow multiple-signal transmission over one cable, both the audio and dual-way data communication signals are embedded in a whats called a blanking zone. This allows for enhancing synchronization with the video signal and supports a max sampling rate of 44.1kHz thanks to ASC.

The bidirectional data channels are composited in the frame blanking zone, brining a two-way, end-to-end transmission that supports control commands such as PTZ control, camera focus, real-time alarm, etc.

Forward output data supports high transmission baud rates. The electrical signal baud rate and sending time are predictable, and the receiving end is of high ASC performance.

On the flip side, the reverse output data supports a lower baud rate due to its low signal frequency and limited data, which is affected by channel transmission uncertainty and impedance matching. Since HD-CVI adopts ASC, the reverse channel can restore some degree of the electrical signal during those long-distance transmissions.

HDCVI Chipset

HD-CVI chipsets are comprised of a receiving chip (RX) and transmitting chip (TX), which are specifically designed for front-end HDCVI security cameras and DVRs, respectively. These chips may also be applied to distributors, fiber optics transceivers, and matrixes as well.

TX chip interfaces are a I2S audio interface, BT1120/BT656 digital video interface, and I2C configuration interface, which are all of industrial standard design. This allows the TX chip to be used in any standard interface for ISPs and audio chips on the market.

The TX chips also allow for analog output, in addition to the HDCVI format, the TX chip is compatible with CVBS as well. The TX chip supports 720p@25fps/30fps/50fps/60fps and 1080p@25fps/30fps.

Figure 1: TX Flow Chart

CVI technology explained

The figure above shows the simplicity of the HDCVI solution with the adopted TX chip. The tiny size of the chip also makes it suitable for application in all kinds of camera sizes.

The RX chip supports HDCVI HD inputs and digital video outputs — I2S audio output, multiple-chip audio cascade output, as well as I2C configuration interface. It also supports flexible mapping of HDCVI video input channel and digital output channel. Each of these channels has its own format and built-in equalizer that support setup for video parameters such as brightness, contrast, hue, saturation, and dual-way control signal transmission.

Figure 2: RX Flow Chart


CVI chipset information


As seen in Figure 2, the RX chip has the same interface as the AD chip in a conventional analog DVR, which is to say, that it provides seamless integration with conventional DVRs. The built in equalizer allows HDCVI DVRs to receive HD video signals from up to 500m. The TX chip supports 1080p@25fps/30fps/50fps/60fps

and 720p@25fps/30fps


HDCVI offers Long-Distance HD transmission

Besides rendering a smooth HD transmission during long-distance wire runs HDCVI also allows for you to minimize the IP hassles typically involved with IP cameras and allows for simple installation; it also features a no-latency for a real-time performance. Since there is no need for video compression processing to maintain its original video quality HD-CVI is able to provide high quality vivid images. When comparing CVI to traditional analog systems, HDCVI has the advantage on the transmission distance front, as it can transmit 500m by simply using 75-3 cable for general transmission while offering a low signal distortion rate.

SO to wrap things up, HDCVI not only gives you a good solution that offers HD megapixel image quality over long-distance transmission, but it also allows for easy installation at a very low cost.

3MP IP Bullet Camera

Here is the unboxing of the latest 3mp IP Network Bullet Security Camera. This ONVIF Indoor/Outdoor High Definition cam offers astonishing detail. Offering a picture size of 2052 x 1536 pixels you will have the capacity to digitally zoom in further and see more detail than with a 2 or 1 megapixel cam. Many cameras on the market tend to show high pixelation when zooming into see detail, as an example, when trying to see somebody’s face, a tattoo or whatever other detail that may prompt a positive ID. This 3 Megapixel Bullet offers a clearer image when zooming in digitally.

The IP Bullet Camera offers a 3.6mm fixed lens with 50 feet of infrared distance. The smoked glass hides the built in infrared LEDs.

3MP IP Bullet IR
POE cable for 3MP IP Bullet

The cameras uses either POE or 12v DC for power.

The camera mount offers a cable feed through bracket to protect the camera wires from being cut or damaged by vandals or burglars.

3 mp ip bullet cable feed through bracket
3MP IP Bullet 3 axis bracket

Camera adjustment comes easy with the included 3 axis bracket. Simply loosen the hex bolt on the camera to adjust the camera as needed. This security camera may be wall or ceiling mounted.