Just lately, we are starting to see the arrival of HomePlug AV2 powerline network technology in the form of network-connectivity devices. This is now due to the standard being “set in stone” and the chipset manufacturers running significant quantities of the circuitry required for these devices.

It will initially come in the form of the typical “homeplug” which is a Ethernet bridge which is able to connect one Ethernet device to a powerline segment based on this technology. But as it evolves, expect to see the access points, multiple-Ethernet-connection switches, routers and the like appear.

Devices that are based on this technology could lead to a more reliable HomePlug powerline segment. It will underscore the flexibility that this powerline-network technology is all about in a lot more applications including multiple-building home networks and use in commercial properties.

In this report, when I am talking of HomePlug AV, I talk of the 200Mbps original HomePlug AV technology whereas when I talk of HomePlug AV500, I talk of the 500Mbps HomePlug AV / IEEE 1901 technology that has been recently issued. Both of these are compatible with each other but work at the speed of the lowest technology.

Key features for a robust HomePlug AV2 segment

HomePlug AV2 has been provided with a slew of improvements that deal with tricky applications of this technology and provide for increased network reliability.

One user group that may benefit would be anyone who has anything to do with commercial-type premises or large multiple-tenancy buildings. Here this could be someone who is setting up a temporary or semi-permanent wired network for something like a POS system or a network printer or a situation where one moves in to a building where cost or lease / occupancy conditions preclude the installation of new Ethernet cabling.

Each HomePlug AV2 device is a repeater

With HomePlug AV2, each device that is part of the same Segment also works as a repeater which improves signal reliability across the HomePlug AV2 segment. This effectively “boosts” the data stream across the AC wiring thus improving signal-noise ratio with environments that have increased device noise; or long-wire links like between buildings.

This may avoid the need to create an extra HomePlug AV segment and linking this via Ethernet to the existing HomePlug AV segment in order to “push out” data over a long inter-building electrical run.

Use of the three AC wires rather than two

Similarly, HomePlug AV2 setups make use of the earth (ground) wire along with either the live (active / line) or neutral wires as part of creating alternative wire pairs for data transfer. This is compared with HomePlug AV and IEEE 1901 (HomePlug AV500) which uses just the power-wire pair (live and neutral wires). It allows for alternative reduced-noise paths to be used for HomePlug AV2 segments which can be a bonus with commercial and industrial environments.

Multiple In Multiple Out technology

This feature extends to implementation of Multiple In Multiple Out technology, commonly used with 802.11n and 802.11ac Wi-Fi wireless networks. In this application, data can be sent along two or more of the three wire pairs at the same time to provide increased reliability and link speed. This is leading to an “on-paper” link speed of nearly 1000Mbps or “gigabit” throughput, which is why a lot of these HomePlug AV2 devices will implement Gigabit Ethernet as their Ethernet connections.

Of course, there will be a fallback to 500Mbps theoretical link speed for SISO links implemented mainly with some first-generation or cheaper HomePlug AV2 devices and with “power-wires-only” links like inter-building runs. This is due to the fact that each building will most likely have its own earth point for its AC supply.

Other technologies like “efficient notching”, wider media bandwidth and improved modulation also create increased robustness and data-transfer efficiency in the HomePlug AV2 link.

Power-efficient HomePlug AV2 hardware

The implementation of “HomePlug Green PHY” technologies which implement sleep mode and beacon-driven wake activity allows for the HomePlug AV2 devices to be increasingly power-efficient.

This matters more if you simply deploy one or more of these devices as simple “infill” repeaters or as network off-ramps that serve other segments or devices. It will also benefit low-traffic HomePlug AV2 segments which have to be available but don’t see consistent use.

Implementation issues

HomePlug AV2 devices can exist on the same logical HomePlug segment as HomePlug AV or HomePlug AV500 devices and will typically use the “Simple-Connect” push-button setup routine that is now common.

A question that is yet to be answered is whether HomePlug AV2 devices will bring the same kind of robustness to a segment that is made up primarily of HomePlug AV or AV500 devices. This encompasses availability of data from network clients connected to HomePlug AV2 devices at clients connected to HomePlug AV devices and vice versa.

If you are offered that first-generation HomePlug AV2 “single in single out” device which runs a 500Mbps link. you may think that you could cut it cheaper with a HomePlug AV500 device. The HomePlug AV2 device may be more relevant for those of you who want increased reliability when establishing a HomePlug powerline segment in commercial premises, linking outbuildings or funky old “sleepout” caravans to the home network using the AC wiring or facing a troublesome HomePlug powerline segment.

HomePlug AV2 is definitely a technology worth looking forward to for more than just the regular suburban home. It is something that underscores the powerline network’s flexibility as a “wired no-new-wires” network in a more robust way as well as adding data throughput to this technology.

Article

Yes, Routers Do Die – SmallNetBuilder

My comments

A typical situation that may make you think that the router at the “edge” of your home network is dead is simply no connection to network or Internet resources. The same can also hold true for network connectivity devices like wireless access points, range extenders or HomePlug powerline devices. It is infact the first point of elimination by some people when they are dealing with an Internet connection that has started to play up.

In some cases, you may be dealing with the wall-wart power supply that may have just died out, usually due to a power spike. You may be able to check this out if you have either a multimeter or a spare working power supply with the same voltage and current output that belonged to other equipment to compare with.

On the other hand, erratic Internet or network activity like Wi-Fi clients taking longer than usual to associate with the router’s access point or Internet activity becoming “off again, on again” can indicate equipment that is on the way out. Similarly, the indicator lights on the device could he glowing in a static manner or flashing regularly rather than flickering. As well, you may have had to reset the router too many times either through power-cycling it or pressing the “reset” button.

In the case of network equipment that may serve a particular device, area or network segment, the behaviour may be noticed by network client devices connected to the equipment concerned.

For example, you may have had stellar Wi-Fi network performance in an area of your premises served by a Wi-Fi access point but it’s all gone downhill lately even though you could get good performance out of areas served by other Wi-Fi access points in the same premises. Or you may find things going wrong with the HomePlug AV powerline network segment when it work so smoothly before.

The increased unreliability with this kind of equipment is very similar to that point in a car’s life when it starts living at the mechanic’s workshop and drills a nice big hole in your wallet because of the increased amount of repair work that is needed.

It may crop up more readily with older or poorly-built low-end consumer equipment or in a house or neighbourhood where the mains power supply may be erratic. The erratic power supply can also be brought about due to circuit breakers including earth-leakage circuit breakers (safety switches) frequently tripping or fuses blowing frequently, or simply many whitegoods in operation at the same time.

The key issue to notice is that when a piece of network equipment in the network starts to cause the network connection or Internet service to become increasing unreliable, it could be an indicator to think of newer equipment and budget for better quality equipment.

Article

Smartphone Cameras v Point And Shoot Digital Cameras | Photography

My Comments

Often we think of the cameras that are integrated in the typical smartphones as competing with the traditional compact digital cameras. Typically the smartphone and tablet cameras win out on integration in to the device we carry around frequently and immediate access to the online world for sharing what we have taken, whereas the compact cameras, especially those modelled on the 35mm compact camera, win out on the body shape, optics, sensor and electronics being tuned for the act of photography.

Taking images further

The main obstacle was taking the images that you took with the camera further using mobile-computing apps and Web sites. This is to do things like “throw” a copy of that image you took to the subject for them to take further or simply to share that image with your friends via Flickr, Picasa or Facebook.

Some newer trends have occurred where the cameras have been equipped with Wi-Fi wireless, Bluetooth or integrated wireless broadband in order to facilitate sharing of images held on the camera. The connection is augmented with front-end apps for image-sharing, cloud-storage and social-network services installed on the camera. There are even a few cases of digital cameras which have the Android mobile operating system as their operating system, with access to the same Google Play app store as you would have on an Android smartphone. This setup allows one to use the apps that exist for the Android platform such as the Dropbox and Facebook mobile front-ends with these cameras.

It is to mitigate the common situation where images have to be downloaded to a computer before they can be shared, whether through the camera being “tethered” to that computer or one removing the “film” i.e. the memory card from the camera and inserting it in the computer.

On the other hand, those of us who have newer Android smartphones and tablets could use a USB “On The Go” cable and either the camera’s USB cable or a card reader to “get at” the images we took with our cameras. Similarly Apple sells an iPad accessory kit which offers this similar function for the iOS devices.

Similarly, cameras that work with the “Eye-Fi” cards can allow you to share the images to your smartphone or tablet so you can take them further with the apps on these devices. They could utilise mobile NAS units of the likes of the Seagate GoFlex Satellite or the Kingston Wi-Drive as extra storage for the images and footage.

How I see this

I see the compact digital cameras existing as a way for those of us who value good-quality images to take these images on the go, including working as an auxiliary camera for big-time photographers.

Whereas the smartphone cameras would work more like the entry-level “quick-snap” cameras of the ilk of the Kodak Instamatics, the Polaroid instant-film cameras and the fixed-focus entry-level 35mm cameras where the goal is simply to grab a quick snapshot of the moment. They would also serve as a tool to create images they can refer to when doing tasks such as dismantling an item or grabbing reference numbers.

Articles

Sony VAIO Duo 13 review: a much-improved take on the Windows 8 slider | Engadget

Sony gives the slider another shot with the VAIO Duo 13: coming June 9th for $1,400  | Engadget

From the horse’s mouth

Sony

European Press Release

My Comments

The Sony VAIO Duo 11 computer has been improved upon this month with a release of a model that uses a 13” screen. This model, known as the VAIO Duo 13 also exposes some useability improvements including an improved slide-out mechanism that is easier to manage. It also has the similar dimensions but uses narrower bezels around the screen and keyboard.

But they have also added a touchpad for those of you who are used to the old laptop trackpad and the keyboard isn’t as cramped as the original Duo 11. This makes for a slider convertible that can appeal to those of us who still like to type out content. There is also a stylus for writing down notes or “roughing-out” drawings.

Of course, there is new horsepower under the hood with the Duo 13 implementing the Intel Haswell chipset. This has an advantage for longer battery runtime with most activities. Sony have also made a GT-like performance edition of the Duo 13 available as part of the lineup, this time with an Intel i7 processor. Sony is also offering integrated wireless broadband as a specification option, most likely with units sold via mobile-phone carriers.

One may think that a 13” slider convertible like the VAIO Duo 13 is a bit too much as a tablet but is the “right size” for creating content. The use of a narrower bezel on the screen and achieving a similar size to the Duo 11 may make the large screen appeal for tablet use while also appealing for typing up those notes when you are on that flight.

It is another example of improved touchscreen convertible laptops appearing on the market as a capable product class for Windows 8/

Website – From the horse’s mouth

nVoy home

My Comments

With nVoy, these devices become easier to set up and integrate in your network

There have been some previous methods available to allow one to manage a network from their desktop. One of these was SMNP which is used primarily to manage equipment in larger networks and is very difficult for anyone to use unless they had good IT skills. Another of these is TR-069 which was developed by the Broadband Forum for use by ISPs and telcos to set up and manage consumer modem routers.

These protocols, like a lot of other network discovery and management protocols relied on an operational network existing between the controller and the controlled device. Similarly, they haven’t work well as a way to allow an average householder or small-business owner to manage a small network effectively and with minimal help.

But a newer specification, known as the iEEE 1905.1 control specification had been set in stone and declared formal. It is now marketed as the nVoy specification and works at a level to manage network segments at the media level.

This is very important with the home-network setups that I prefer and stand for where there is an Ethernet and/or HomePlug AV wired network backbone along with an 802.11n Wi-Fi wireless network segment covering the property where the network is set up at.

This allows logic to be constructed to manage a Wi-Fi, HomePlug AV, MoCA or Cat5 Ethernet segment that is part of the typical home network without having to have a full IP logical network being alive across the whole network.  It also means that media-peculiar network-setup and diagnostics parameters like the ESSIDs and WPA2-Personal passphrases required for wireless networks can be propagated over different network media like Ethernet or HomePlug wired-network segments.

This simplifies setup routines like creating new Wi-Fi wireless or HomePlug AV powerline segments in a secure manner; or adding additional network devices to the existing heterogenous multi-segment small network. It even encompasses the establishment of secondary access points in order to extend the coverage of a Wi-Fi wireless network in a “cellular” fashion.

The user experience would be based on using NFC “touch-and-go” setup or two-button “push-push” setup of new Wi-Fi and HomePlug devices. As well, you would be able to manage the network from devices that use a full management interface, whether local to the network or remotely via something like TR-069 or SMNP.

Even through the life-cycle of the network, the nVoy specification can allow one to use a management interface at one single point of control to bring up diagnostic information about the network or parts thereof so as to identify points of failure or to optimise the network for best performance. The fact that nVoy is determined as a standard could allow computer operating-system developers to bake this function in to subsequent versions of their operating systems and establish one point of control in the operating system user interface.

Beyond the ease of setup and troubleshooting that it offers for small networks, nVoy has the ability to enable easy-to-manage “multiple concurrent pipe” connections in an easy-to-manage form. This allows for two or more connections to be aggregated for higher throughput, as a load-balancing arrangement so that particular traffic can go via one connection while other traffic goes via another connection as well as a fail-over arrangement if things don’t work out on one pipe. This will be more real with the common practice to equip most client devices with two or more network “on-ramps” such as Ethernet and Wi-Fi wireless.

Personally, I would also like to see nVoy work with most client devices in extending their network abilities. For example, a network printer or consumer AV device that has integrated Wi-Fi wireless and a wired connection like Ethernet or HomePlug be able to allow you to set up the Wi-Fi connectivity as an access point if it is connected to the network via the wired connection. Similarly, the same device could be set up as a wireless client bridge for another device like a PS3 or Blu-Ray player that is connected to the Ethernet socket on the device when it is connected via the wireless connection.

Similarly, the nVoy specification could also tackle quality-of-service for IP telephony, AV streaming and real-time gaming so as to guarantee throughput for these network activities. As well, when standards evolve for synchronous “broadcast” network activity on the different media such as for multi-channel wireless speakers or party-streaming modes, nVoy could be used to support network-wide synchronising abilities for these applications.

What I applaud about nVoy being set in stone is that the small network becomes easier to manage whether it is based on one segment or medium or uses many different segments or media.

Article

ASUS intros the Desktop PC G10, packing a built-in UPS and portable battery (hands-on video) | Engadget

Video

Click to view

My Comments

The classic “tower-style” desktop PC could be considered to be losing its market share amongst users other than small businesses and hardcore computer gamers as the laptops and all-in-one desktops gain hold amongst the mainstream PC buyers.

But ASUS have worked on a way to take things further for this class of computer. Typically, a computer like this that is involved in mission-critical work may be hooked up to an external uninterruptable power supply to allow users to properly shut these units down, or to provide continual service when the power goes out. Typically these devices are a loaf-size box that has to reside near the computer and can look very ugly.

Here, ASUS have provided a removable battery pack which doubles as a uninterruptable power supply for the computer or as an external battery pack for a smartphone or tablet. When it is installed in the computer, this pack will charge up and stay charged while the computer is on AC power but will provide half-an-hour’s worth of power to allow you to shut down the computer properly when the AC power is removed. But you can remove the battery pack and use that to run your battery-thirsty smartphone for longer by plugging its USB cable in to one of the USB sockets on the edge of that pack.

This is definitely one way ASUS have thought beyond the norm when it comes to power-supply design and I would like to see this design concept be taken further such as an aftermarket add-on for existing “tower” desktops or with higher-capacity batteries available for this setup.

Article – From the horse’s mouth

The XDJ-R1 all-in-one DJ system – the portable, rekordbox ready DJ unit that delivers wireless control from iPhone, iPad and iPod touch

Video

Click to view

My Comments

Pioneer have been establishing a Wi-Fi LAN-based setup to allow desktop and mobile computing equipment to work with some of their DJ equipment like the XDJ-AERO DJ console and the CDJ-2000Nexus CD player. Here, they integrated the ability to establish a small Wi-Fi network that encompasses the DJ’s table to link the devices together.

Now they have built the XDJ-R1 which is another network-capable DJ workstation that incorporates 2 CD drives so DJs can work between CDs, file-based media and other sources. This unit also exploits the Wi-Fi LAN not just for content transfer but to allow the DJ to use an iPhone or iPad as a control surface, including the ability toe manage the sound mix and effects from the iOS device. This is courtesy of the remoteBox app which provides the control-surface function for this console. With this, the DJ can keep the show going with the desired effects without being near their table, which can come in handy if they want to interact with the crowd such as to organise a social dance, or the event’s special hosts i.e. the birthday person or the lucky couple.

Of course this DJ workstation has abilities similar to the higher-end Pioneer Pro DJ mixers which allows for the DJ to pull some impressive effects and mix conditions in to the show.

But what I am impressed about is that the XDJ-R1 “all-in-one” DJ workstation has been factored not just for use in the nightclub DJ booth but is easy to setup for DJs who work many different locations like private parties, bar gigs and outdoor gigs. As well, the XDJ-R1 has “best-case” connectivity to hi-fi and PA amplifiers; and “house” sound systems through its use of the balanced XLR connections along with the RCA connections.

This shows that Pioneer is factoring in the small network as a tool for the DJ’s table when it comes to having access to file-based audio content or using a tablet as a control surface.