Archive for the ‘Electronics’ Category

A Future Development of Open Source Content-Aware (Moving) Image Editing Software?

June 11, 2014
content aware digital video remaster

A sample digital video image dimension conversion from conventional 4:3 to 16:9 aspect ratio without cropping using a future open source programming of content-aware to recover a missing detail. (Video clip from Facebook page via YouTube of Be Careful With My Heart thru ABS-CBN.com, used with permision.)

For the  past few years we had often enjoy to watch a conventional moving image dimension—whether on film or TV or video—with an aspect ratio of 4:3. But on today’s digital age, when 16:9 digital video image was introduced in DTV broadcasting, Internet streaming, and  digital home video system, someone had requested to remaster digitally from 4:3 image to a true content-aware 16:9 image without cropping but rather recovering a missing detail from being pillar box layout. One of the recent example of fully-licensed commercial software was Adobe Photoshop CS5, which is capable to recover a missing detail of original 4:3 still image while lying under 16:9 image master layout. However, the use of commercial software would be very expensive as well as labor cost to process for a long time to remaster the entire sample old moving image dimension. To solve this problem, my only wish is to develop an open-source software based on Linux OS and GNU technology using an affordable calculation of MPEG-based or JPEG-based image recovery value constant, relative to a conventional mathematical constant such as pi (π) equal to 3.14… Although I’m not a computer programmer, here is my own suggestion to the developer of open-source imaging software such as GIMP as well as SourceForge.net community:

  1. Take a sample of high resolution, wider aspect ratio, digital still image from a standard high performance digital camera. Suppose, for example, a high quality 4K resolution (2160p) with an aspect ratio of 16:9.
  2. While preserving an original sample image capture, copy the image and then:
    a. Crop the original 16:9 image dimension to 4:3 image dimension. To find the width for converting  4:3 image from 16:9 image, the following equation is as follows:
    Width (in pixels) (4:3) = Length (in pixels) × (4 ÷ 3)
    b. Reduce the original high resolution image being cropped from step 2a to become a standard definition (SD) nominal image resolution, such as 480p (720 × 480) or 576p (720 × 576).
  3. Using a system based from MPEG or JPEG format, calculate to find a constant value between SD resolution and high resolution image of the same aspect ratio image dimension given in step 2b, and find a constant value between 4:3 image and 16:9 image given from step 2a. The following respective equation is as follows:
    a. Original low resolution image of the same imaging object  (Rl) ÷ Original high resolution image of the same imaging object (Rh) = True content-aware high resolution image conversion constant (Khrc) [Rl ÷ Rh = Khrc]
    b. Original 4:3 short aspect ratio image of the same imaging object (Ps)÷ Original 16:9 long aspect ratio image of the same imaging object (Pl)= True content-aware wide aspect ratio image dimension conversion constant (Kwarc) [Ps ÷ Pl = Kwarc]
  4. Repeat steps 1, 2, and 3 to make another respective sample constant value of image aspect ratio and image resolution true content-aware conversion calculation.
  5. To test whether the use of respective conversion constant value of image resolution and image aspect ratio based from MPEG or JPEG would work as a true content-aware open source system, take a sample image being scanned in low resolution and limited aspect ratio dimension. Hence:
    a. Revealing a true content-aware high resolution image detail [Rh = Rl × Khrc (vary)]
    b. Revealing a true content-aware wide aspect ratio image dimension [Pl = Ps × Kwarc (vary)]

Whether the use of open-source based system would work as mentioned above or not in order to surpass the current commercial image editing software to function content-aware image remaster system, the most important thing is to have a thorough study to produce a new system and would take a long time to process with the cooperation of a fellow well-trained open-source software programmer. If this would be a reality, then various commercial film or TV producer would never have to worry to pay more to remaster old film or TV video content at an affordable processing cost.

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A Future Multicore GPU For 4K or 8K 3D PC Gaming?

May 9, 2014

For the past few years various competing graphics processing unit (GPU) chip brand such as Nvidia GeForce and AMD Radeon (formerly ATI Radeon) developed a conventional single-core architecture, consisting of hundreds of millions of switching transistors capable to generate billions of resolution raster fill rate and trillions of 3D texture trigonometry fill rate per second. Although current high performance GPUs work well only on 720p, 768p, and 1080p high definition (HD) to run 3D animation gaming software content, there were uncertain whether they would support to run future 4K ultra-high definition (2160p) or 8K Super Hi-Vision (4320p) resolution 3D animation gaming software content having with high texture depth that would slow down processing time.

I ever wish for Nvidia and AMD reading on this blog to try develop a multicore—say, eight-core or sixteen core—GPU capable to run future 4K or 8K resolution 3D animation gaming software content. In the following sample illustration below, each single core of the total 8-core or 16-core GPU consists of five-in-one component such as 3D texture depth, 3D color shading, 2D vector, and raster video and still image codecs (MPEG-1, MPEG-2, MPEG-4, H.264, HEVC, JPEG, JPEG2000, etc.) Above the 8-core or 16-core are the multi-level—say, level 5 (L5)—memory cache with a projected 8 gigabyte (GB) to 16 GB from a current 1 GB of single core GPU. Finally, to furnish a complete 4K or 8K detail, there is a special video gateway memory below the 8-core or 16-core GPU component.

gpu 8 core

A sample illustration of future development of 8-core or 16-core graphics processing unit (GPU) chip capable to run 4K or 8K resolution 3D animation gaming software.

It’s up for both Nvidia and AMD to follow this concept GPU—together with future enhanced process feature of new DirectX version—whether it is effective to load, process, and run future 4K or 8K resolution 3D animation gaming software content titles very smooth and efficient in seconds without lagging, with a projected rate of trillions of raster resolution fill rate and quadrillion (1 × 1015) 3D texture fill rate. That would work well to function only together with future 8-core or 16-core central processing unit (CPU) chip on competing brands such as Intel and AMD, which may be available for few long years before or after a full roll-out of Super Hi-Vision 8K broadcast in Japan and selected rich countries by 2020.

Mobile Videostreaming On A Second Generation ABS-CBN Mobile SIM 2013

November 24, 2013
abs cbn mobile sim

A second generation ABS-CBN mobile SIM package, released November 18, 2013, not only affordable GSM-based calls, SMS, and mobile Internet but also mobile video streaming via IWanTV. The first generation ABS-CBN SIM, being collaborated by Globe Telecom, was introduced in mid-decade 2000s.

When multimedia messaging service (MMS) was adopted in the Philippines in mid-decade 2000s following a roll-out of 3rd generation GSM-based unit with full graphical color, still image capture, video streaming, and mobile Internet streaming capability, TV networks ABS-CBN and GMA-7 went a joint venture with either Smart or Globe to introduce an experimental roll-out of first generation mobile video streaming of ABS-CBN and GMA-7 TV shows with limited quality using an older H.261 video codec with a resolution of 128 x 96 pixels, a frame rate of 12 fps, and a bit rate of 28 kbps. The service was short-lived and discontinued, as most Pinoy Netizens would opt an alternative video streaming service to watch an uploaded videos of either ABS-CBN or GMA-7 TV shows such as YouTube on broadband Internet.

ABS-CBN.com, on one hand, introduced an online premium monthly subscription video streaming service in 2003. Various ABS-CBN TV shows being recorded from local TV broadcast feed use Windows Media Video 9 video codec and encoded with digital rights management (DRM) that can be played on Windows Media Player 7, 8, 9, 10, 11, and 12 only by online payment basis to the Internet users. Firstly was ABS-CBN Now!, then TFC Now! by late mid-decade 2000s, and finally the service was seperated between local video streaming service IWanTV.com.ph (exclusively for Sky Broadband and Bayan DSL subscribers) in 2012 and international video streaming service TFC.tv in 2012. Both IWanTV and TFC.tv use DRM-encoded H.264 video codec under Adobe Flash graphics web interface.

Back in mid-decade 2000s (about 2004, 2005, or 2006, I don’t know the exact year it was released) ABS-CBN went a joint venture with Globe Telecom to create a first generation ABS-CBN mobile prepaid SIM, dubbed “Kapamilya” SIM addressing a further affordable GSM-based mobile call and short messaging service (SMS) service rates, but that offer was discontinued due to lower number of subscriptions and because of full majority of competing popular mobile network services. In the second quarter of 2013 ABS-CBN and Globe Telecom collaborate together again a second time to create a second generation ABS-CBN mobile prepaid SIM, not only on affordable GSM mobile call, unlimited SMS, and 4G mobile Internet streaming access but also a mobile video streaming. Yes, that move would attract for most loyal ABS-CBN TV viewers that often miss to watch their favorite TV shows without sacrificing to reach through their traditional TV sets—whether (near defunct) CRT or widescreen LCD/LED/Plasma—at home.

The second generation ABS-CBN mobile prepaid SIM was officially released November 18, 2013 two days after a beneficiary concert for Super Typhoon Yolanda (Haiyan in international code name) victims that hit in Eastern Visayas region, following an official TV ad (featuring various ABS-CBN artists) of a new SIM service version exclusively aired on ABS-CBN main local TV channel. Available in the market at selected stalls, it claimed a bonus service fee at about 1-peso GSM call rates for ABS-CBN SIM-to-ABS-CBN SIM subscribers.

Smartphone And Tablet PC Unit And Mobile Broadband Internet Requirements

abs cbn globe tatoo sim

A second generation ABS-CBN mobile SIM is comparable to Globe Tatoo mobile Internet Stick SIM.

abs cbn sim android apple ipad iphone

In order to access mobile video streaming aside from call, SMS, and Internet browsing, ABS-CBN SIM requires Apple iPhone/iPad, Android OS capable smartphone or tablet PC, Windows Phone OS smartphone, and many other smartphone or tablet PC unit with different OS.

As current fixed broadband Internet such as PLDT myDSL requires desktop PC and even current mobile broadband Internet stick such as Globe, Smart, and Sun require laptop PC, so as second generation ABS-CBN Mobile SIM requires the following list of smartphone and tablet PC units available in the market today:

  • Apple iPhone (4, 4S, 5, 5C, 5S or higher version)
  • Apple iPad (3, 4 or higher version)
  • Android OS capable mobile smartphone or tablet PC with latest mobile dual-core or quad-core CPU (MyPhone, Cherry, Torque, Coby, Polaroid, O Plus, StarMobile, Skyworth, etc.)
  • Windows Phone (7 or higher) capable mobile phone (such as Nokia)
  • Other leading consumer electronics brand of mobile smartphone and tablet PC with other OS system (Sony Xperia, Samsung Galaxy, LG, Acer, etc.)

The above mentioned smartphone and tablet PC units must have a built-in HSPDA (3 Mbps or 7.5 Mbps) internal mobile broadband Intenet 4G network modem as well as Wi-Fi 802.11 a/b/g/n (100 Mbps or higher) capable to receive mobile video and Internet streaming. However, use of older version of Apple iPhone or iPad or older Android OS capable or other OS smartphone or tablet PC unit without 4G network—even conventional GSM-based mobile phone unit of the past—was not accessible.

Promo Access Mobile Video And Broadband Internet Streaming

abs cbn mobile sim

Want to enjoy promo rates on mobile video streaming and Internet surfing, as shown on poster on some stalls that avail ABS-CBN Mobile SIM? LEFT CLICK THE SCREEN TO ENLARGE FOR DETAILS. (From left of the poster: characters from daytime family drama “Be Careful With My Heart”, used with permission of ABS-CBN.)

Just as most present mobile phone networks in the Philippines such as Smart, Talk n Text, Globe, Touch Mobile, and Sun that offer SMS registration-based promo call, SMS, and mobile Internet services at affordable service fee, various smartphone or tablet PC users that use 2nd generation ABS-CBN mobile SIM may key in the following SMS syntax with respective feature promo Internet and video streaming access service fee and send to 2135:

  • For 15 pesos loaded prepaid fee subscription, KOL15 (30 MB iWanTV mobile video streaming and mobile Internet streaming, 1-day validity, unlimited iWanTV mobile video streaming via Wi-Fi)
  • For 20 pesos loaded prepaid fee subscription, KOL20 (45 MB iWanTV mobile video streaming and mobile Internet streaming, 1-day validity, unlimited iWanTV mobile video streaming via Wi-Fi)
  • For 50 pesos loaded prepaid fee subscription, KOL50 (120 MB iWanTV mobile video streaming and mobile Internet streaming, 5-day validity, unlimited iWanTV mobile video streaming via Wi-Fi)

If they did not use promo access system by SMS registration, then they would opt 1 peso per 1 MB mobile video or Internet streaming service fee, free from 800 MB Internet streaming promo service limit that would disable Internet access for 1 day mainly because it was Globe-powered service just like Globe Tatoo mobile Internet promo rates.

Mobile Video Streaming Specifications

The official website of second generation ABS-CBN Mobile SIM access did not mention an actual specifications of mobile video streaming to play various ABS-CBN TV shows currently in standard definition (SD) format 480i at default, but because of 1 peso per 1 MB and basic promo service charge access giving basic digital video quality content here is my own predicted specification:

  • Video codec: H.264
  • Video resolution: 320 x 240 pixels
  • Video aspect ratio: 4:3
  • Video frame rate: 12 fps
  • Video bit rate: 140 to 180 kbps
  • Audio codec: AAC
  • Audio frequency range: up to 14,000 Hz
  • Audio track: Mono
  • Audio bit rate: 10 to 15 kbps

If ABS-CBN would switch from SD to high definition (HD) format 720p or 1080i once the roll-out of ISDB-T DTTV transmission will fully commercialize, then the mobile video streaming content would possibly change from 4:3 aspect ratio to 16:9 aspect ratio depending on reconfiguring a given resolution and frame rates and even service fee rates.

Other Mobile Videostreaming Service?

The National Telecommunications Commission (NTC) had been approved to roll-out the second generation ABS-CBN mobile SIM, mainly because its system was stable during test run of mobile video streaming and Internet access except for roaming. No related issue of possible radio interference among other mobile broadband Internet service as well as GSM calls and SMS/MMS.

As of this writing, there were no available, possible speculation via reliable sources that TV networks TV5 and GMA-7 would imitate the concept from ABS-CBN mobile service currently negotiating with Globe Telecom that operates nationwide 4G network service. If ever, for example, both of the two aforementioned TV networks would do this in reality, then they would run on Smart or Sun 4G network, with the same service rate as that of ABS-CBN mobile but with different SIM configuration and different SMS registration on promo mobile Internet and videostreaming.

There seems to be a form of “duopoly” for negotiating between a TV network and a leading mobile network in the Philippines, depending on a possible impact to offer for many people who have had on their side of favorite local TV channel in the Philippines. The Kapisanan ng mga Broadkaster ng Pilipinas (KBP) will keep monitoring the behavior of competing local TV channels together with their own mobile videostreaming service aside from conventional analog TV broadcast, in spite of deferment of KBP-member by GMA-7.

Mobile Analog TV And ISDB-T One-Seg DTV Stream Service

And if ever the roll-out of second generation ABS-CBN mobile SIM and even possible speculation of future roll-out of a SIM made by GMA-7 and TV5 offering mobile videostreaming would not be successful, there were an alternative to watch various local TV channels such as the use of built-in analog TV tuner on most Philippine-made dual-SIM mobile phone models such as MyPhone, Cherry Mobile, Torque, Star Mobile, etc. Secondly, various local TV networks would expect an upcoming roll-out of combined full-segment and one-segment ISDB-T transmission compatible for built-in ISDB-T tuner on most portable digital devices such as smartphones, tablet PC, and portable gaming consoles, to be launched by 2014 or 2015 before the switch-over from analog TV broadcast to DTV service on December 31, 2015.

Note: This blog that was intentionally promoted with consent is not connected to ABS-CBN.

Sources:

http://www.abscbnmobile.com/

http://www.abs-cbnnews.com/video/business/11/15/13/abs-cbn-launch-mobile-phone-service-end-2013

http://www.philstar.com/business/2013/11/20/1258588/abs-cbn-launches-foray-telecom-business

 

An Alternative To DVB-T2 Being Only Favored by GMA Network In The Philippines

July 18, 2013

GMA Network was the only TV station that only favors DVB-T2 based from the recommended order of ASEAN that supports the new European DTTV platform through selected south-east Asian countries currently assigning 7 to 8 MHz TV channel bandwidth and 50 Hz AC power. After a numerous times of having a delaying tactics to further freeze out the rollout of adopted ISDB-T transmission and receivers in the Philippines for a review between the two DTTV standards, GMA failed to force the grant of using the European DTV platform to NTC since it was not tested for 6 MHz TV channel bandwidth and 60 Hz AC power under the current 525-line NTSC analog TV transmission due to a possible interference to all forms of radio service.

So what are the better alternative DTTV platforms that succeed DVB-T2 in order to assign on most countries like the Philippines that have 6 MHz TV channel bandwidth and 60 Hz AC power? Here the two shortlist:

  • Higher-Level QAM on 2nd Generation ISDB-T Variant (ISDB-T2). In 2011 state-run broadcaster NHK introduced a new variant of high-level quadruple amplitude modulation (QAM) such as 1024QAM and 4096QAM and an improved low-cost high performance error correction system such as concatenated low density parity check (LDPC) (developed by various Japanese scientist of NHK Science Labs) with bit rates at about 78 Mbps per 6 MHz RF bandwidth, nearly twice as that of 40 Mbps on conventional 256QAM of DVB-T2. That rate was just enough to accomodate sixteen Full HD (1080p) subchannels at 4.5 Mbps, four UHDTV (4K resolution) subchannels at 18 Mbps, and one SHV (8K resolution) subchannels at 72 Mbps in MPEG-H HEVC video codec format. The actual structure of 2nd generation ISDB-T, though its first prototype consisting of two sets of 6 MHz UHF TV channels was used, was not yet finalized, but probably—if finalized—it would be nearly the same as that of first generation ISDB-T consisting of a segmented 6 MHz “middle-right-middle-left” transmission scan pattern. (CLICK HERE FOR MY BLOG FOR DETAILS OR CHECK OUT FROM NHK SHV DOCUMENTATION.)
  • Reconfigured DVB-T2 Variant For 6 MHz Bandwidth (ATSC 3.0). In February of 2013 the ATSC Group introduced a prototype of reconfigured 256QAM signal based from DVB-T2 in order to make a stable transmission under 6 MHz channel bandwidth and 60 Hz AC power. Before they bagan a 4K video test broadcast using that platform prototype by means of calibration method, the FCC ordered all current first generation ATSC broadcast on every TV networks to shut down for 4 hours (from 12 midnight to 4 a.m.)  in order to prevent interference during testing. The resulting rate was about only 24 Mbps from the targeted 32 Mbps due to an annoying signal noise and even some erring calculating performance. By the end of 3rd quarter of 2013, the group would announce the required configuration of ATSC 3.0 using only an even higher level QAM (rather than using 256QAM, 1024QAM, and 4096QAM) and even an improved error-correction system in order to increase a bit rate at projectedly more than 80 Mbps per 6 MHz band in forward transmission scan. (Source: BroadcastEngineering.com, AdvancedTelevision.com)

Both of these new DTTV standards succeeding DVB-T2, seperated on designated countries such as Japan for ISDB-T and U.S. for ATSC, would take a few years to develop before rolling out both the transmitter and the receiver in the near future. We would ever wish that GMA Network, of which they often focus to discover an advanced high-end DTTV transmission technology aside from their current full-power analog TV transmission for years, should ever try these two rather than using the European standard to prevent any problem.

As of now, the KBP and the NTC are waiting for signing a final draft of IRR of the use of Philippine variant ISDB-T to president Benigno “Noynoy” Aquino later before the end of 2013 or in 2014 as part of the planned official rollout of ISDB-T on the target date of 2014 or 2015 and a planned analog TV broadcast switch-off (ASO) on December 31, 2015. After this, the NTC would start the second assesstment of the two new standard as mentioned above together (aside from the proposed rollout of 5G-based wireless IPTV network on the year 2018), for that would be a part of the proposed 8K broadcast depending of the favor of various TV networks in the Philippines.

Fact Or Fallacy? The Main Secret of Digital Video Content of Full Segment 6 MHz UHF TV Channel Bandwith of ISDB-T Transmission

May 18, 2013

Reminder: To Wikipedia web user contributors (and even the reader), don’t (trust to) post about a typical speculative thoughts or opinion of my statement on this blog to your article mainly because it may not so accurate that was not based on reliable sources.

isdb-t, 8k, shv, super hi vision

A sample diagram of a possible configuration of second generation ISDB-T in the near future based from the latest 8K SHV encoder developed by Mitsubishi Electric as of May 2013.

Japan was the only country that uses a sole variant of digital terrestrial television (DTTV) platform called Integrated Services for Digital Broadcasting–Terrestrial (ISDB-T). As compared to other platforms such as Digital Video Broadcast–Terrestrial (DVB-T) in Europe, Africa, Australia, and selected Asian countries, Advanced Television Systems Committee (ATSC) in North and Central America, including South Korea and Taiwan, and Digital Multimedia Broadcast–Terrestrial (DMB-T) in China and Hong Kong [to be discontinued in the future?], including South Korea and Taiwan, ISDB-T uses a combined action of DVB-T and DVB-H assigned on UHF band, giving more robust and more flexible transmission. The aforementioned Japanese DTV platform was now currently adopted in South America, Philippines, and Maldives.

First generation ISDB-T transmission under a standard 6 MHz UHF TV channel bandwidth consists a total of 13 segments under 16QAM and 64QAM digital modulaton, 12-segment for full HD DTV content and one-segment for mobile DTV transmission. Second generation ISDB-T transmission designed for Super Hi-Vision (SHV) or 8K resolution (7680 x 4320) DTV broadcast, on the other hand, uses higher-level digital modulation such as 1024QAM and 4096QAM, compared to 256QAM used in second generation DVB-T transmission (DVB-T2). An actual structure of second generation ISDB-T transmission under 6 MHz UHF TV channel bandwidth—currently under development after the successful transmission prototype using two UHF channels in Tokyo in 2012—was still unknown.

An additional specific details of the said platform was not publicized in public, but only a known Japanese experts that invented the prototype were responsible to hold confidential development. As I guessed in my thought accordingly on the following illustration but not based on actual reliable sources, each segment of the total 12 segments on first generation ISDB-T may contain a small resolution at about 480 x 360 pixels running on conventional MPEG-2 video codec, forming a full HD content of 1920 x 1080 pixels when combined an entire segments in proper “tagging” of sequence of video image pieces just like solving a jigsaw puzzle.

isdbt

Diagram of a segmented 6MHz channel bandwidth of a first generation ISDB-T transmission compatible for 480p, 720p, and 1080i format.

The concept of a segmented 720p (6-segment 426 x 360 pixels) or 1080i (12-segment 480 x 360 pixels) digital video structure used in first generation ISDB-T transmission may be based on conventional standard definition (SD) video wall being rolled out in 1980s and 1990s, in which it consists of a specialized digital console in order to divide the original 525-line NTSC (480i) or 625-line PAL (576i) analog video resolution into a separate 16 set of frame details of respective 180 x 120 pixels or 180 x 144 pixels before projecting through a separate 16 sets of SD CRT projectors. That technique was the same with the recent demonstration of displaying 16 sets of 1080p digital video image consisting of an actual 16-set full HD video camera shooting scene to form an 8K resolution format in the middle of decade 2000s, for which it would be possibly reflect on this visionary posted on this blog.

One of the recent development of experimental 8K Super Hi Vision digital video signal as of May 2013 was the 17-row MPEG-H HEVC encoder circuitry board cabinet developed by Mitsubishi Electric together with NHK. (CLICK HERE TO DOWNLOAD IN PDF FORMAT FOR DETAILS) Each board from that unit may contain an encoded video with a resolution of 7680 X 256 pixels for rows 1 to 16 and 7680 X 224 pixels for row 17, and then they sandwiched to form an 8K resolution image. If ever the  NHK together with ARIB and DiBEG would develop a final prototype of signal structure of second generation ISDB-T, I wish they should try this latest sample illustration as I thought to speculate as shown above, containing a total of 17 segments for 8K resolution, a 31.1 MHz segment containing AAC stereo audio codec, a 300 KHz one-segment (s0) containing 1080p digital video content, and 600 KHz segment containing (proposed prototype) Dolby 22.1 stereo surround audio codec under 6 MHz UHF TV channel bandwidth. If 8K broadcast would not be used, then second generation ISDB-T may accomodate (1) four subchannel 4K resolution for rows 1 to 16 and 720p resolution for row 17 or (2) sixteen subchannel 1080p resolution for rows 1 to 16 and 720p resolution for row 17.

isdb-t

Speculative possible configuration of 2nd generation ISDB-T under 6 MHz UHF TV channel bandwidth, accomodating one 8K Super Hi Vision subchannel, four 4K UHDTV subchannel, or 16 1080p and one 720p subchannel.

How I wish they would develop an actual, final design of segmented 6 MHz UHF TV channel bandwidth of second generation ISDB-T transmission before the target year of 2020 when 8K broadcast would start. Whether my statement is either a fact or fallacy about first generation ISDB-T, and maybe a possibility about a second generation ISDB-T platform in reality, this blog is open to post their comment for a correction of facts as shown below.

Further Information:

http://www.nhk.or.jp/strl/open99/de-2/shosai-e.html

Manila Standard Today: Skycable Explains Transmission Glitz

February 5, 2013

SUBSCRIBERS to SkyCable complained about poor or lost signal of their favorite TV channel, some of them going to the extent of accusing the cable company of sabotage.

We got word through e-mail from the company explaining the circumstances that brought about the “lost signal.”

We’re reprinting it, in case we might misquote or misinterpret what the company said. Here it is: “At around noontime of Sunday Sept. 23, 2012, our Sky Customer Service Help Desk started receiving complaints of intermittent freezing of the GMA 7 channel, which was being shown on Channel 12 on the Skycable digital platform. We checked the problem, and found out that this was also affecting two other channels—the Sky Preview Channel on Channel 11 and the ShopTV channel on Channel 13. This was apparently caused by an activity we implemented to prepare for additional HD channels on our platform.

We looked at several solutions, and determined that the best one would entail a signal interruption of several minutes affecting around half of the channels in the Skycable line-up. We felt that implementing this solution during the afternoon and primetime viewing hours would further inconvenience our subscribers, therefore, we decided to work on this in the early morning hours of Sept. 24, Monday.

The interim solution was to simulcast the GMA 7 feed on to Channel 85 on our platform, which we did around 3 p.m. on Sept. 23. We then run a Technical Advisory on GMA 7 informing the viewers of the technical problem and asking them to tune in to Channel 85 for a better feed.”

So far, the complaints have dwindled to almost nil. I personally didn’t notice the intermittent freezing, although I did notice that when I was surfing channels, I saw blank screen on Skycable’s channels 11, 12, and 13. But since I was more interested to watch a show on another channel (higher number), it didn’t occur to me as a major glitz.

I just hope the Kapuso followers who are Skycable subscribers are now happy they get channel 12 clearly.

Boboy Romero, head of Globe Business, welcomed their most valued clients to a special screening of The Hobbit during their Appreciation Night at Imax Theater at the Mall of Asia.

Globe Business holds such events for their VIP clients from time to time as a gesture of thanks and celebration.

“Our clients are important to us; we strengthen our ties as we partner with them in their business’ growth,” Romero said.

Source: Red, Isah V. Red, “Skycable Explains Transmission Glitz”. Manila Standard Today, January 07, 2013 at 7:01pm (http://manilastandardtoday.com/2013/01/07/skycable-explains-transmission-glitz/)

Baron “Super” TV Antenna, Suitable For DTTV Reception?

December 4, 2012

Baron TV Antenna Philippines Photo November-December 2012

The Philippines has already adopted ISDB-T, but while NTC were still reviewing and revising the drafted IRR for the use of Japanese technology DTTV platform, there were still heating up a debate to choose which DTTV platform would be fitted to roll out before analog switch-off (ASO) on December 31, 2012, such as ISDB-T or DVB-T2. But on lighter side, if future DTTV transmission in the Philippines become mainstream, it requires a good high gain outdoor TV antenna to receive DTTV signal for most households such as Yagi-Uda or log-periodic. The only exception is to use two-element antenna known as Baron Super Antenna, which is only considered as disadvantageous.

The brand name Baron was named after professor Ernie Baron, a radio host of the program Knowledge Power on AM radio station DZMM aired in late 80s until early 2000s. But the first brand was DC Super Antenna, in which “DC” was called after Engineer Dennis Carandag of ABS-CBN, who developed a two-element antenna consisting of 58 MHz dipole at 1.2 meters long per every two antenna rod, a short director at about 40 centimeters long of balanced alignment at about 20 centimeters facing the dipole, and a spacing between two elements at about 30 centimeters long. To connect between the antenna and an analog TV set, it requires a standard 75-ohm RG-6 coaxial cable and a matching transformer known as balun, instead of an old 300-ohm flat twin wire in an older analog outdoor TV antenna design.

The second antenna model was Baron KGL Antenna, consisting of a V-shape of both the long dipole (1.3 meters per rod) and short dipole (18 centimeters per rod). Introduced in late-mid-decade 2000s, this antenna was only apply on mountainous areas and dead spots, claiming it would scatter analog TV signal (away from the TV tower on ground) over high hills due to its high propagation.

Both the Baron Super TV Antenna and Baron KGL TV Antenna were often apply only on older boob-tube analog TV set model to receive analog TV channel signal, but on this digital age the question was this: can these two antenna models be apply to DTTV reception? The answer would be “no”, because it only generates a respective low signal gain and multipath reception in UHF digital terrestrial TV transmission. Accordingly, if a lone long dipole and even V dipole does not have a director, it would create a third, fourth, and fifth harmonic signal lobe on both high-band VHF (174 to 216 MHz) and UHF (470 to 806 MHz) reception, rather than a true circular signal lobe that low-band VHF (54 to 88 MHz) can. And in the case of two-element Baron antenna, there were other criticisms involed according to a fellow ECE students posted on Facebook album photo of DTV Pilipinas blogsite using a 4NEC antenna analyzer software: since a long dipole generates only 75 ohms compared to folded dipole at 300 ohms, a further increase of RF spectrum at respective TV Channel 3 to 5 and 8 to 13 would also increase impedance level between 100 to 250 ohms, so that only means a Channel 2 TV signal (54 to 60 MHz) and Channel 7 TV signal (174 to 180 MHz) would only stay at 75 ohms.

But there were another Baron antenna model that claimed it could generate high gain TV reception compared to Yagi-Uda TV antenna, not only on fringe range analog TV reception (100 kilometers and above) applying full power analog TV transmission but also on DTTV reception applying low-power DTTV transmission. Called Baron Extended Range Super Antenna and introduced in late-mid-decade 2000s, it consists of a long dipole at 1.2 meters long per rod, short dipole at 18 centimeters long per rod, shorter director at about 20 centimeters long of equal balance, a cross-connected wires between long and short dipole serving as two-element log-periodic antenna, and a spacing at about 30 and 3 centimeters. There were other brand of three-element high gain TV antenna that would imitate as that of a lone Baron brand, such as Crystal and Edge, with the same quality and signal strength but with a different type of matching transformer.

The two-element antenna, the V-shape antenna, and three-element high-gain antenna model with the enclosed RG-6 and balun under Baron brand were often priced at respective Php 500 and Php 600 marked as genuine (in which the aluminum rod of every models were corrosion resistant against any weather condition) available at every leading hardware stores in most popular shopping malls. Non-genuine two-element antenna found in street vendors and street bargain men uses only ordinary balun and RG-59 coaxial that would lead to poor TV reception, and its substandard aluminum rod and frame may lead to corrosion and fragility.

Whether Baron Extended Range Antenna, Crystal, or Edge would be used to receive mainstream 1 KW, 2 KW, or 3 KW ISDB-T DTTV transmission power in the coming years, it’s up to the electronics expert to remind for most consumers whether or not to use these three-element high gain antenna, for which it remains only mandatory that may not improve DTTV reception due to obstructions.