Obviousness

The obviousness of US patent 7461353 under 35 U.S.C. § 103 can be analyzed by combining the general knowledge of conventional web browsing systems and the established capabilities of vector graphics systems, as described within the patent's own "BACKGROUND OF THE INVENTION" and "Client Overview" sections. A person having ordinary skill in the art (PHOSITA) at the time of the invention (priority date 2000-06-12) would have been motivated to combine these known elements to overcome the identified problems.

The core inventive concepts of US7461353, as summarized in its Abstract and Brief Summary, include:

• Enabling mobile devices to support resolution-independent scalable display of Internet (Web) content.
• Allowing Web pages to be scaled (zoomed) and panned for better viewing on smaller screen sizes.
• Employing processing of original Web content (HTML, XML, CSS) to generate scalable content.
• Rapidly rendering, zooming, and panning this scalable content.
• Maintaining substantially the same or identical layout as the original Web page.

Prior Art References:

For this analysis, the following "prior art references" are understood from the provided patent text, particularly the "BACKGROUND OF THE INVENTION" and the descriptive portions of the "Client Overview" that outline existing technologies:

1. Prior Art Reference A: Conventional Web Browsing Systems:

   • Existing Internet information browsers (e.g., Mosaic, Netscape Navigator, Internet Explorer) handle various content formats including HTML, XML, GIF, and JPEG.
   • These browsers generally display content at a "flat single resolution with no browser support for zoom" for the overall web page.
   • Much Internet content is designed with "fixed resolution structures, such as tables," which, while good for branding, presents "a daunting technical problem for display of Internet content (designed for desktop computers) on small screen, low resolution, or different aspect ratio devices, such as cell phones and hand held computers."
   • Conventional browsers allow altering font size and resizing the display area, but this is distinct from true zoom functionality for the entire page.

2. Prior Art Reference B: Vector Graphics Systems with Resolution-Independent Zoom and Pan:

   • The patent acknowledges that "zoom and pan" capability is "familiar to CAD and other vector content software users."
   • It is known that when a system "manipulates vectors, there is no loss in quality as the display is zoomed."
   • A Simple Vector Format (SVF) is described as a format "originally designed to handle a superset of the most commonly used file formats in the complex world of CAD," capable of accommodating new graphical functions and being considered by the W3C for vector content on the World Wide Web. This indicates that the principles of vector formats for resolution independence were well-understood in fields like CAD.

Obviousness Combination under 35 U.S.C. § 103:

A person having ordinary skill in the art (PHOSITA) in 2000-2001, faced with the problems described in Prior Art A, would have been motivated to combine the features of Prior Art A and Prior Art B to achieve the claimed invention.

Motivation for Combination:

The patent explicitly identifies the technical problem in the background: conventional web browsers, when displaying Internet content designed for desktop computers (often with fixed-resolution layouts), suffer from a "daunting technical problem for display... on small screen, low resolution, or different aspect ratio devices, such as cell phones and hand held computers" due to the "flat single resolution with no browser support for zoom."

A PHOSITA, encountering this clearly stated problem, would be motivated to seek solutions that allow for resolution-independent display and effective zooming and panning. Prior Art B provides a direct solution to these issues, noting that "zoom and pan" is "familiar to CAD and other vector content software users" and that "there is no loss in quality as the display is zoomed" when manipulating vectors.

Therefore, the motivation would be to apply the known advantages of vector graphics technology (Prior Art B) to the problem of displaying conventional, fixed-resolution web content (Prior Art A) on mobile devices. The goal would be to enable the web content to be scaled and panned without degradation, thereby improving usability on small screens, which directly addresses the "daunting technical problem" outlined in the background.

Explanation of Obviousness:

Given the motivation, the combination would involve the following steps, which would be obvious to a PHOSITA:

1. Translating Web Content to a Scalable Vector Representation: A PHOSITA would recognize that to achieve resolution independence and lossless zooming from fixed-resolution HTML/XML/raster image content (Prior Art A), the content must be converted into a scalable format. Knowing the capabilities of vector graphics systems (Prior Art B), it would be obvious to translate the web content (including HTML, XML, and CSS layout information) into a scalable vector representation (like SVF, or any other known vector format). This "novel processing" claimed by the patent is the logical step to make web content resolution-independent.
2. Displaying Scalable Vector Content with Zoom and Pan on Mobile Devices: Once the web content is in a scalable vector format, it would be obvious to leverage the known "zoom and pan" capabilities common in vector graphics software (Prior Art B) to render this content on various devices, including mobile devices. This directly addresses the lack of zoom support in conventional browsers and the challenges of small screens described in Prior Art A. The "thin client" described by the patent as performing this rendering would be an obvious implementation choice for resource-constrained mobile devices.
3. Maintaining Original Layout: The objective of adapting web content is typically to preserve the original design as much as possible to maintain context and familiarity. Therefore, rendering the scalable vector content while "provid[ing] substantially the same or identical layout as the original Web page" would be an obvious design choice for a PHOSITA implementing a conversion system.

In conclusion, the combination of (A) conventional web browsing systems that present fixed-resolution web content poorly on mobile devices and lack zoom, with (B) known vector graphics systems that offer resolution-independent display with zoom and pan capabilities, would render the claims of US7461353 obvious. The clear motivation would be to overcome the acknowledged technical problem of effectively displaying and interacting with existing web content on the increasingly prevalent small screens of mobile devices.