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microbrowser
Mobile Browser
A microbrowser is a web browser designed for use on a handheld device such as a PDA or mobile phone. Microbrowsers have small file sizes to accommodate the low memory capacity and low-bandwidth of wireless handheld devices. Essentially it is a stripped-down web browser. Sometimes it is referred to as mobile browser, micro-browser, mini-browser or minibrowser.
Contents
Underlying technology[edit]
The microbrowser usually sets up the cellular networks themselves and gets content written in XHTML Mobile Profile (WAP 2.0), or WML (WAP 1.3 which was based on HDML). WML and HDML are stripped-down formats suitable for transmission across limited bandwidth, and wireless data connection called WAP. In Japan, DoCoMo defined the i-mode service based on i-mode HTML, which is an extension of Compact HTML (C-HTML), a simple subset of HTML.
WAP 2.0 specifies XHTML Mobile Profile plus WAP CSS, subsets of the W3C's standard XHTML and CSS with minor mobile extensions.
Newer microbrowsers are full-featured Web browsers capable of HTML, WML, i-mode HTML, cHTML, plus CSS, ECMAScript, and plug-ins such as Macromedia Flash.
Pioneers[edit]
The so-called microbrowser technologies such as WAP, NTTDocomo's i-mode platform and Openwave's HDML platform have fuelled the first wave of interest in wireless data services.
Small-screen rendering limitations[edit]
As mentioned, not only do microbrowsers need to be small in file size, the display screen is also much smaller. Extreme care and meticulous detail must be considered in displaying HTML information onto such a small screen. Bandwidth is also extremely limited and so is the stability. Connections get cut off as with ordinary cell phones and PDAs that are wirelessly connected.
Popular microbrowsers[edit]
The following are some of the more popular microbrowsers. Some microbrowsers are really miniaturized Web browsers, so some microbrowser companies also provide browsers for the PC.
Default browsers used by major mobile phone vendors[edit]
- NetFront by Access Co. Ltd. (Japan).
- Nokia Series 40 Browser by Nokia.
- Nokia Series 60 Browser by Nokia.
- Obigo by Obigo AB (Sweden), owned by Teleca Systems AB (formerly AU Systems)
- Openwave (Redwood, CA) (formerly Phone.com, formerly Unwired Planet).
- Opera by Opera Software ASA (Norway).
- Pocket Internet Explorer by Microsoft Inc.
User-installable microbrowsers[edit]
- Andromeda
- Bluelark Bluelark bought by Handspring Inc.
- Doris by Anygraaf Oy (Vantaa, Finland)
- NicheView by Interniche Technologies Inc.
- Minimo by Mozilla Foundation.
- Palm™ Web Browser Pro by PalmOne, Inc. (Milpitas, CA)
- Picsel by Picsel Technologies Ltd. (Glasgow, Scotland)
- Pixo by Sun Microsystems (Pixo acquired by Sun July 2003)
- RocketBrowser Rocket Mobile, Inc. (Silicon Valley, CA).
- SAS
- Skweezer by Greenlight Wireless Corporation
- Thunderhawk by Bitstream Inc. (Cambridge, MA)
- Wapaka
- WebViewer by Reqwireless
- Novarra
