tag:blogger.com,1999:blog-60237732011-12-14T21:46:23.251-05:00everything about emerging mobile wireless technologies, applications, services, and business models.Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.comBlogger661100tag:blogger.com,1999:blog-6023773.post-77982338673088278702008-09-25T19:30:00.001-05:002008-09-25T19:30:57.604-05:00

I've had a hard time figuring out how to set conditional breakpoint in Platform Builder. No much useful information is available on the web, and the documentation does not even give an example. So, here are the findings. The same expression rules apply to Watch window as well. You can use register names directly in an expression. For example, you can set 'r1 == 0x200' as a condition in the

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com37tag:blogger.com,1999:blog-6023773.post-91528400389412702462008-09-25T19:28:00.000-05:002008-09-25T19:29:03.436-05:00

What does Cloud Computing (CC) mean to me? Two services for now: Microsoft SkyDrive is a service to store and share files on the web, and Google Docs enables online editing and sharing of documents and calendars. (Google Gear allows offline editing). One feature missing from both services is what I call the "Save To My SkyDrive" on the "File" menu, with which you can edit your stuff in your

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com57tag:blogger.com,1999:blog-6023773.post-71418687256523782422008-09-25T19:27:00.000-05:002008-09-25T19:28:08.816-05:00

Some Windows Mobile partners asked me lately about publishing Serial Port Profile on a Windows Mobile phone. We know that a Windows Mobile phone usually publishes DUN (Dial-up Networking) service, which is based on SPP. What if you want to publish an additional SPP so your phone and the desktop can have an additional communication channel? In Windows Mobile AKU 6, you can find a sample

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-86736885041617224342008-09-25T19:26:00.001-05:002008-09-25T19:26:51.659-05:00

On Windows Mobile 6 phones, if you want to add Gmail to the email account list, there will be a wizard that automatically configures your Gmail account using POP3, which works fine. However, as Google just enabled IMAP access for Gmail, you may want to switch over to IMAP because that way you can view the same set of folders/emails right on the server without downloading a local copy. The

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-40021917516660357842008-09-25T19:24:00.000-05:002008-09-25T19:26:07.602-05:00

Last year, iPhone took 74 days to reach 1 million. HTC Touch took about 5 months to get that number. This year, the 1 million mark was reached just 3 days after iPhone 2.0 was launched. Now the total iPhone volume has reportedly reached 7 million. Their goal of getting 10 million iPhone shipped by the end of 2008 is well within reach. I don't have an iPhone 3G. Ironically some people from

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-1161152304690835642006-10-18T01:18:00.000-05:002006-10-18T01:18:25.256-05:00

Check out the free web based phone call service from JAJAH - web-activated telephony.Basically the service will connect your phone (cell phone or a landline) to the number you dialed. The service can be totally free (as calling US, Canada, China, HK, etc), or with a fee of some centers per minutes. Quality is good.I am using a phone card (2.2 cents per minutes) to call China landlines. With

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com98tag:blogger.com,1999:blog-6023773.post-1129252217676345442005-10-13T20:07:00.000-05:002005-10-13T20:10:17.683-05:00

MSN and Yahoo have agreed to open their priprietary networks to each other to allow interoperability. AOL is in limbo. Not clear about Google's new adventure in IM.

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com108tag:blogger.com,1999:blog-6023773.post-1125499863987978182005-08-31T09:51:00.000-05:002005-08-31T09:51:04.030-05:00

Infrared has been generally considered a low-tech compared with Bluetooth because of its data rate. Now the new IrDA spec comes out with a peak data rate of 100Mbit/s, way faster than Bluetooth 2.0. Still, this is line-of-sight and you must carefully align two IrDA ports to establish a connection. How about power consumption? Not mentioned in the article.

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com19tag:blogger.com,1999:blog-6023773.post-1125344536129533112005-08-29T14:42:00.000-05:002005-08-29T14:42:16.133-05:00

This is one way to solve the tiny-screen problem for Mobile Video on cell phones: DigitalCamera@101reviews � Big Screen Viewing Effect For Mobile Phone Videos. The projected screen is about 12-inch as seen from three feet away. The resolution is 320*240 QVGA. Not bad.

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com2tag:blogger.com,1999:blog-6023773.post-1125162859949995702005-08-27T12:14:00.000-05:002005-08-27T12:14:19.996-05:00

Got an idea of a startup? Check out the $50 million giveaway on Business 2.0. The article lists a bunch of very cool ideas that VCs are seeking for business plans. You will notice that most projects are mobile and wireless related. Smarter phones for RFID based mobile payment, mobile social networking, plug-n-play mobile services, and so on. Just wondering if these ideas could be possibly

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com7tag:blogger.com,1999:blog-6023773.post-1121022508484969622005-07-10T13:55:00.000-05:002005-07-10T14:08:28.490-05:00

Fact is Palm is losing the PDA market to PPC devices. Microsoft successfully (so far) broke into this market. How did Palm fight back?1) split into Palm One and Palm Source; then Palm One will switch back to its original name Palm2) merged with handspring3) came up with Treo smart phone series and LifeDrive mobile manager4) Palm OS Cobalt 6.1As consumers, we do like this kind of diversity.

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com8tag:blogger.com,1999:blog-6023773.post-1121017944656269192005-07-10T12:25:00.000-05:002005-07-10T12:52:24.663-05:00

The story @Forbes.com talks about Apple's move toward MVNO (mobile virtual network operator), i.e., reaching its customers (with value-add content and services) through a cellular/WiFi infrastructure provided by some MNO like Sprint or Cingular. This is a new business model in the wireless world, and a number of companies are doing the same thing, including Wal-mart, ESPN, Disney, and so on.This

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com7tag:blogger.com,1999:blog-6023773.post-1114715624358778702005-04-28T13:00:00.000-05:002005-04-28T14:13:44.360-05:00

ACM Queue May issue features a survey article about wireless technologies in enterprise. Here, enterprise wireless application is defined as:"...extend enterprise applications to wireless devices used by employees and clients"I prefer the notion of "Mobile Enterprise Applications" for the same thing. Note that this does not encompass the wireless network infrastructure such as WiFi or WiMax or

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com56tag:blogger.com,1999:blog-6023773.post-1114707298812522232005-04-28T10:54:00.000-05:002005-04-28T11:54:58.813-05:00

This month's ACM Queue is centered at "Going Mobile", coincident with IEEE Pervasive Computing magazine. One of the stories, "Mobile Media: Making it a Reality" is worth reading. It talks about two research projects at HP labs: one is InHand, a personal context aware mobile services that leverage RFID technology; the other is a Mobile Gaming Service Platform.It you look at the mobile networking

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com11tag:blogger.com,1999:blog-6023773.post-1114479093164123212005-04-25T19:49:00.000-05:002005-04-26T08:50:42.826-05:00

The April-June issue of IEEE Pervasive Computing has several informative articles on smart phone application, exemplifying some exciting advancement in smart phone research and development. The following is a quick briefing of the issue.Swiss Army Knife or Wallet?As always, the editor in chief, M. Satyanarayanan, brings the readers an insightful perspective into smart phone computing. He points

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com51tag:blogger.com,1999:blog-6023773.post-1114106776427622522005-04-21T13:06:00.000-05:002005-04-21T17:56:46.450-05:00

As expected, Intel Introduces New WiMAX Silicon Solution To Expand The Reach Of Broadband Internet Access on April 18, 2005. Its rival, Wavesat who claimed to make the world's first WiMax chips, started to ship their WiMax chips in January. Both companies have partnered with wireless system manufacturers to market WiMax based products.Quote from Intel's WiMax press release:Previously codenamed

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com1tag:blogger.com,1999:blog-6023773.post-1113489867386990772005-04-14T09:44:00.000-05:002005-04-14T09:44:27.386-05:00

T-mobile starts to offer free WiFi access for rail commuters between London and Brighton using a Pre WiMax technology. When the WiMax signal gets lost, the system migrates to GPRS. Here is the big picture: a commuter's WiFi interface talks to an antenna mounted on the roof of the carriage, which in turns talks to base stations by the side of the track. From there an ADSL 2Mbps link is available

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-1111718783081188612005-03-24T21:46:00.000-05:002005-03-24T21:46:23.080-05:00

It is apparently getting more and more real now. Business 2.0 runs a story speculating Steve Jobs's next innovative projects. . iPhone, Apple's phone combined with iPod, seems the most interesting one. We know Motorola will offer cell phones that can directly access iTune service. How about a pure iPod phone from Apple? It is quite certain communication is going to converge with consumer

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com6tag:blogger.com,1999:blog-6023773.post-1111675673484763462005-03-24T09:47:00.000-05:002005-03-24T09:47:53.483-05:00

Mobile PC magazine is running an exhaustive history of mobile computers. As it turned out, at the very beginning, "portable" is the word they used for battery powered small computers with CRT monitors. A big leap is the rise of laptops (IBM thinkpad) that came with a LCD. I am looking forward to a history of mobile handhelds.....

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com1tag:blogger.com,1999:blog-6023773.post-1111674695316663772005-03-24T09:31:00.000-05:002005-03-24T09:31:35.316-05:00

I totally agree with Sir Time Bernes-Lee's comment on the trend of web design and how it affects mobile internet (wap, i-mode, etc). (story here: Slashdot | Web Design Hampers Mobile Internet?). Without propoer automatic web page transformation, it is absolutely a pain in the neck to surf normal web pages on a smart phone per se. Notice that researchers from Microsoft and othersare working

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com1tag:blogger.com,1999:blog-6023773.post-1110503864733944242005-03-10T20:17:00.000-05:002005-03-10T20:17:44.733-05:00

/. story |AMD Launches Turion Mobile Processor. "justforaday writes "Earlier today, AMD launched their Turion mobile processor, which is based on the AMD64 architecture. This is set to compete directly with Intel's Centrino (Pentium-M) line of processors. Chips will initially be clocked between 1.6 and 2.0 GHz. Looks like we should be seeing some nice low-powered 64-bit notebooks in the near

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com1tag:blogger.com,1999:blog-6023773.post-1108565282344880952005-02-16T09:48:00.000-05:002005-02-16T09:48:02.343-05:00

The same teach from Shan Dong University is reported to have broken the SHA-1 hash algorithm, which is the basis of many implementations of MAC and digital signature. Slashdot | SHA-1 Broken. The real problem is for the digital signature. Wait to see the paper.

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com1tag:blogger.com,1999:blog-6023773.post-1107279314217272862005-02-01T12:35:00.000-05:002005-02-01T12:35:14.216-05:00

This is amazing: MSN Maps & Directions - Directions Results. Anobody knows why there is a dead zone between those two cities?

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-1107232843679565042005-01-31T23:40:00.000-05:002005-01-31T23:40:43.680-05:00

The sotry Slashdot | The Dot Com Super Bowl tracks those companies blowing big bucks during the 2000 Super Bowl. Most are dead, or acquired by others.

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-1107232465025865042005-01-31T23:34:00.000-05:002005-01-31T23:34:25.026-05:00

Crypto-enabled RFID products are not secure as you think. This will definitely again spurs RFID security and privacy concerns when it is being rolled out on a mass basis.

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-1096463794335550282004-09-29T08:13:00.000-05:002004-09-29T08:16:34.336-05:00

Nintendo DS will likely to have P2P built-in for mobile gaming and normal communications, in an ad hoc way. The idea has been discussed in academia for years, and in many different settings. Wait to see how this finally works.

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-1092190934372507012004-08-10T21:02:00.000-05:002004-08-10T21:22:14.373-05:00

With the vision that the next generation mobile handheld device will enable the user to access high speed data service, naturally one may ask: which wireless technology? Is it 3G/4G from cellular telecoms, or WiMax(802.16, wireless MAN), or 802.20? Given the huge number of mobile phones shipped every year, the business perspective to put the technology on each phone is indeed enormous. Clearly

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com7tag:blogger.com,1999:blog-6023773.post-1092110952447733342004-08-09T23:00:00.000-05:002004-08-09T23:09:12.446-05:00

Put it in this way: if the cell phone is in visible mode, it will be discovered by the malicious hacker and then, after some "....", the hacker will be able to see address book or even place a bug into the phone so you have another big brother. My question is, what is that "...."? How does the Bluetooth "gun" get into the symbian system? Similar question to the latest Windows Pocket PC trojan:

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com3tag:blogger.com,1999:blog-6023773.post-1091641239432782132004-08-04T12:36:00.000-05:002004-08-04T12:54:38.206-05:00

A story by a Palm Treo user talked about the definition of "Smartphone" made by two MS employees. Basically two things: 1) a smartphone offers offline access to built-in PDA functions; 2) a smartphone must be sync-able with desktop/laptop computers. The story also mentioned that carriers see per-user revenue of smartphones is higher than regular cell phones. Why? Check out their device price

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-1091212794758348952004-07-30T13:29:00.000-05:002004-07-30T13:39:54.756-05:00

I maybe a bit late on this... Zigbee is the standard of short range, cost-efffective, low power consumption, mesh sensor networks. Compared with Bluetooth, Zigbee mainly targets wireless control using a large number of nodes. What Zigbee would bring up for consumer based mobile computing is still unclear, though.

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com1tag:blogger.com,1999:blog-6023773.post-1090250683549742462004-07-19T09:40:00.000-05:002004-07-19T10:24:43.550-05:00

MSmobile runs a coverage of Euro Tech Ed 2004, which outlines some of the features in the future Windows Mobile beyond 2003 SE. Interesting point is there are fewer and fewer things available only for Pocket PC but not for smartphone. The smartphone device will be at least 200MHz. The resolution will be 320*240. This is a clear trend to convergence!

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-1090012525413339112004-07-16T16:06:00.000-05:002004-07-16T16:15:25.413-05:00

An interesting article in June 7's newsweek presented a very good overview of the global smart phone market, and the sort-of-imminent trend to replace your computer with a smart phone. Someone has some comments on the article's interview with Jeff Hawkins, creator of Palm, and found of Palm Inc. Yes, PDA camp is going to lose this war. We will see.

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com1tag:blogger.com,1999:blog-6023773.post-1085700875849198812004-05-27T18:34:00.000-05:002004-05-27T18:34:35.850-05:00

A company announced software that enables a cellphone to work as mouse & keyboard. The underlying wireless connectivity is Bluetooth - to a computer. Question: if you are close to a computer, why bother use cell phone as keyboard?

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com4tag:blogger.com,1999:blog-6023773.post-1084470158582882332004-05-13T12:42:00.000-05:002004-05-13T12:42:38.583-05:00

Just read a very good survey of Mobile banking services published on CACM. The paper pointed out that mobile banking with mature along with next generation data service and better business model to lower cost. In fact, there are already some interesting applications such as Helsinki City Transport mobile ticketing, and Finland ST1 gas station payment using sms.

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com1tag:blogger.com,1999:blog-6023773.post-1084372663964186932004-05-12T09:37:00.000-05:002004-05-12T09:37:43.963-05:00

The slashdot story Slashdot | Motorola Plans Wi-Fi Cell Phones pointed out a clear trend in cell phone industry. Yes, with WiFi, a lot more applications will be available on the cell phone to take advantage of data service. The story mentioned an automatic switch between cellular and WiFi for voice communication, which has been researched by many academic guys in the name of "WLAN and Cellular

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-1083729189128280752004-05-04T22:53:00.000-05:002004-05-04T22:57:33.280-05:00

Happy to see Linux Smartphones On The Rise. Yes, we phone users do not want to pay that money for a very simple utility program.

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-1079153512193824632004-03-12T23:51:00.000-05:002004-03-12T23:55:03.653-05:00

The slashdot story talks about WiFi Phone Announced by Zyxel which support SIP. Cisco has one already, but it runs a "skinny" protocol that requires h.323 call manager. Anyway this is a good sign of wifi's imminent invasion to the voice market.

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-1076606755602410982004-02-12T12:25:00.000-05:002004-02-12T12:28:26.903-05:00

In a recent ACM queue article, J2ME is extensively discussed along with the open source Java.net communicate. Some interesting projects are Java.Net communications. In particular, the project cellphoneJava may be worth a try....

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-1076603951025036052004-02-12T11:39:00.000-05:002004-02-12T22:33:16.966-05:00

Microsoft Research will soon release information and software of the Aura (AURA: Advanced User Resource Annotation)project, reported by eweek. The project is an effort to creating universal software framework that enables a Windows Pocket PC to retrieve and maintain information about an object identified by a physical tag (eg, bar code). User may annotate on a blog and make it searchable for

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-1076042460982933352004-02-05T23:41:00.000-05:002004-02-05T23:43:23.043-05:00

Slashdot reports Slashdot | Nextel Jumps into Wide-Area Wireless Broadband. This is NOT 3G; this is something that 3G must beat. Technical details here.

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-1075431947307614282004-01-29T22:05:00.000-05:002004-01-29T22:08:00.153-05:00

A paper on IEEE Internet Computing Magazine Internet Roaming introduced a solution to the underlying problem. It combines WLAN security and seamless roaming, again, using Mobile IP.

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-1075407085280521632004-01-29T15:11:00.000-05:002004-01-29T15:13:37.653-05:00

Just took a note on HP Mobile Printing. It looks like a scheme of automatic service discovery in mobile environment. Need to read more ....

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-1075243533111573482004-01-27T17:45:00.000-05:002004-01-27T17:47:42.483-05:00

Just found a link here that lists papers in the area of wlan & cellular coexistence. The INFOCOM03 paper from Bell Labs is the latest one, worth reading.

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-1075169338345281482004-01-26T21:08:00.000-05:002004-01-26T21:11:07.013-05:00

Linuxdevices.com has a story :Linux headed for worldwide smartphone domination about OS battlefileds of smart phones. According to a report from Zelos Group, Linux will beat Symbian and Micrsofot Windows Mobile (where is Palm?).

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-1074570363204584942004-01-19T22:46:00.000-05:002004-01-19T22:48:01.796-05:00

Bell Labs network engine lets cell users decide how to share location information, which is being presented at the 2004 IEEE International Conference on Mobile Data Management in Berkeley, Calif. The paper is "Enabling Context-Aware and Privacy-Conscious User Data Sharing" Richard Hull, Bharat Kumar, Daniel Lieuwen, Peter F. Patel-Schneider, Arnaud Sahuguet, Sriram Varadarajan, Avinash Vyas (

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-1074391454399854772004-01-17T21:04:00.000-05:002004-01-17T21:06:10.750-05:00

A paper from Inter labs (link talks about building a testbed for an AAA framework. Print it first.

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-1074391121771462662004-01-17T20:58:00.000-05:002004-01-17T21:00:37.356-05:00

Just found some interesting papers at Networking and Communications - Research and Development at Intel. The universal communicator looks pretty amazing.

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-1074386562404485072004-01-17T19:42:00.000-05:002004-01-17T19:44:38.140-05:00

The research report discussed the way to 'virtualize' a wireless LAN card to support multiple wireless LANs(may be in infrastructure mode or ad hoc mode). An intermediate layer is added between IP and device driver to switch the card periodically among available wireless LANs, basically a time division approach on MAc layer. An adaptive algorithm is developed to favor wireless LANs of better

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-1073443437970408052004-01-06T21:43:00.000-05:002004-01-06T21:44:17.273-05:00

NetGear's new digital music player device allows to play mp3 and windows media audio files stored in a PC with your home stereos wirelessly. You don't need to have a sound card to line-out. A remote control will help you navigate the LCD on the device to select files. Yet another example of integration of home electronics with home networks.

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-1073442714998012852004-01-06T21:31:00.000-05:002004-01-06T21:32:14.423-05:00

HD radio technology from iBiquity Digital seems to be the most recent public wireless radio service, along with satellite digital radio from Sirium and XM. Just because audio quality has been upgraded to digital does not mean this technology will take off a bit - Who cares the quality of an FM radio while driving or working at office? Speaking of Satellite Wireless, here is a list of existing

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-1072151596042362142003-12-22T22:53:00.000-05:002003-12-22T22:53:31.903-05:00

Cell phone inventor Martin Cooper does not think 3G will be deployed in large scale as no demanding apps. MMS, streaming media, and gaming will not likely to be popular among the mass. How about e-commerce? Wait, it does not need high bit rate...... Who needs 3G anyway? We have camera phones already. We probably need video phone next year...........

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-1071679831389744002003-12-17T11:50:00.000-05:002003-12-17T11:50:45.070-05:00

Linux invades wireless! Slashdot | Samsung Linux-Powered Smartphone Ships In China

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-1071530281567957292003-12-15T18:18:00.000-05:002003-12-15T18:18:15.233-05:00

The site (PDA stands for Personal Digital Assistant) has some files about PDA history, future of PDAs, and some links.

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-1071526079626853432003-12-15T17:07:00.000-05:002003-12-15T17:08:13.410-05:00

The sotry (MOBILE & WIRELESS ADVISOR®: Slow PDA Sales Indicate an Evolution in Needs - - ADVISOR.com - -) gives some hints on how the PDAs will evolve in the near future.

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-1070466578836728042003-12-03T10:49:00.000-05:002003-12-03T10:49:48.880-05:00

A slashdot story Slashdot | DoCoMo To Use Linux On Their 3G phones. A couple of competitors now are trying to get a big share in this embedded OS for cell phones (maybe smart phones): Windows Mobile, Symbian, PalmOS, and now here is Linux.

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-1070466064848177872003-12-03T10:41:00.000-05:002003-12-03T10:41:15.010-05:00

This is a tech news in Chinese from tech.sina.com.cn. PDA market drops 61%. How about global market?

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-1070227505312998302003-11-30T16:25:00.000-05:002003-11-30T16:25:15.000-05:00

Slashdot has a story on possible cell phone based large scale virus infection Slashdot | Viruses Find A New Host: Cell Phones. The comments down there also show some insight.

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-1070226727030682232003-11-30T16:12:00.000-05:002003-11-30T16:12:16.886-05:00

The technology behind this is GNER Mobile Office - How Does It Work?. Each train has satellite connection and cellular data connection. This is a real mobile office.

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-1069789588271825732003-11-25T14:46:00.000-05:002003-11-25T14:46:36.296-05:00

An article on IEEE Spectrum's October 03 issue "Nifty New Cellular Phone Systems Race to Capture Japan's Consumers" talks about the slower CDMA2000 data service provided by KDDI is leading the market of 3G over the faster service WCDMA by DoCoMo.

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-1069788424216196532003-11-25T14:27:00.000-05:002003-11-25T14:27:12.513-05:00

Japan 3G Users 69 Million. The reasons that 3G is getting much more popular in Japan than in the West are, as stated in Tanenbaum's book "Computer Networks, 4th ed" page 667, are: (1) potential customers in the West already have large-screen computers with Internet access (2) People in the west are not used to pay $1 a month to access news site. (3) i-Mode is mainly used when people commute by

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-1069168061889395582003-11-18T10:07:00.000-05:002003-11-18T10:07:48.546-05:00

Intel labs is doing research in so called 'universal communicator platform' (List of docs here) that enables seamless switch back and forth from 802.11 networks to a GSM cellular one during the same phone call. They have a working headset already.

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-1068237486233373082003-11-07T15:38:00.000-05:002003-11-07T15:38:09.803-05:00

Funny that after I posted the last blog of handheld to work like an iPod, there is an article at CNet talking about the problems of using an iPod. Battary, price, and so on. Could a PDA beat this?

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-1068161931550646712003-11-06T18:38:00.000-05:002003-11-06T18:39:41.596-05:00

Peter Coffee's eweek column Handhelds Call for New Enterprise Thinking pointed out a basic yet important design paradigm of applications and services for handheld devices. A handheld could augment user's accessibility of some network services as the user moves, compared with desktop computers. A simple example is to use software on handhelds to find the nearest printer or Internet access.

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-1067798830628346732003-11-02T13:47:00.000-05:002003-11-02T13:47:12.746-05:00

Well, this is not a smart handhelds, but a smart metal that will make your head work like a speaker. So you can throw away your headset now. Existing small electronic devices such as SoundBug could even turn any hard glossy surface into a sound source, only $29. The quality is good, as reported. Will this idea help the design of smart handhelds in some regards?

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-1067794235858026392003-11-02T12:30:00.000-05:002003-11-02T12:30:38.196-05:00

The phone is also notable for its use of a chip by Intel, the PXA262 processor, using QtEmbedded as software development framework. Earlier in October, Motorola's launched its mpx200, a Windows PPC 2002 phone. Seems like Mot don't want to rely solely on a single OS. However, eventually it might go all the way to Linux.

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0tag:blogger.com,1999:blog-6023773.post-1067793843638674482003-11-02T12:24:00.000-05:002003-11-02T12:24:06.060-05:00

PDA makers have to face the trend that phone makes are going to add more stuff into a wireless phone, making a PDA less of use. But PDA makes also have their own powerful weapon: the software, power consumption, easy-of-use, etc. Let's wait and see.

Pei Zhenghttp://www.blogger.com/profile/07201545645519471414noreply@blogger.com0