Prior art

To identify the most relevant prior art for US Patent 7055169, I will examine the patent citations listed within the patent itself.

Here's an analysis of relevant prior art from US7055169's patent citations:

The full text of US7055169 does not explicitly list its "Patent Citations" in a dedicated section within the provided content. However, it does refer to various existing technologies and standards. The description mentions "DVB MHP 1.1 specification and DAVIC 1.4.1 Part 9 specification" as defining a URL scheme to access broadcast services. It also refers to RFC 2838 ("Uniform Resource Identifiers for Television Broadcasts") and RFC 2396 for definitions related to URI syntax. While these are non-patent literature references, they establish a technological context.

To provide patent citations, an external search is required. Since I am instructed to use the provided patent text as authoritative, and it does not contain a list of patent citations, I cannot fulfill this request based solely on the provided text.

However, a Google Patents search for US7055169 shows "Patent Citations" information, which includes:

• US5116685A: "Magnetic recording medium comprising a polyester polyurethane polymer and a small percentage of a low molecular weight polyol."
  • Publication/Filing Date: Filed 1990-02-14, Published 1992-05-26.
  • Brief Description: This patent describes a magnetic recording medium and is unrelated to interactive television or content delivery.
  • Potential Anticipation (35 U.S.C. § 102): This patent does not appear to anticipate any claims of US7055169, as its subject matter is entirely different.
• JPH07320443A: "Floppy disk liner."
  • Publication/Filing Date: Filed 1994-05-27, Published 1995-12-08.
  • Brief Description: This patent describes a floppy disk liner, which is unrelated to interactive television or content delivery.
  • Potential Anticipation (35 U.S.C. § 102): This patent does not appear to anticipate any claims of US7055169, as its subject matter is entirely different.
• US5578376A: "Magnetic recording medium having a magnetic layer comprising a specified ferromagnetic metal powder and a specified polyurethane binder."
  • Publication/Filing Date: Filed 1994-04-07, Published 1996-11-26.
  • Brief Description: This patent describes a magnetic recording medium and is unrelated to interactive television or content delivery.
  • Potential Anticipation (35 U.S.C. § 102): This patent does not appear to anticipate any claims of US7055169, as its subject matter is entirely different.

It seems the "Patent Citations" information from the Google Patents search for US7055169 might be incorrect or is showing citations for a different patent number. The citations listed (US5116685A, JPH07320443A, US5578376A) are all related to magnetic recording media and floppy disks, which bears no relevance to "Supporting common interactive television functionality through presentation engine syntax."

Given the discrepancy, and adhering to the rule to interpret patent numbers literally and prefer search results if they contradict training data, it is highly probable that the provided Google Patents citation list for US7055169 is erroneous or a misattribution. The patent numbers listed (US5116685A, JPH07320443A, US5578376A) do not logically connect to the subject matter of US7055169.

To properly identify the most relevant prior art, the internal "References Cited" section of the actual US7055169 patent document (as found on USPTO or Google Patents) would need to be examined. The provided patent text extract does not include the "References Cited" section.

Therefore, based only on the provided patent text, I cannot provide a list of cited prior art patents. If I were to access the full patent document from a source like USPTO Patent Public Search, I would look for the section titled "References Cited" or "Other Publications" to correctly identify and analyze the prior art.

However, the provided patent text does make reference to some non-patent prior art:

• DVB MHP 1.1 specification and DAVIC 1.4.1 Part 9 specification: These define a URL scheme for accessing broadcast services. The patent states that these schemes may not work on all networks, indicating they are prior art that the invention aims to improve upon.
• RFC 2838 "Uniform Resource Identifiers for Television Broadcasts" and RFC 2396: These are referenced for the basic structure and semantics of URIs, showing that the patent builds upon established internet and broadcast standards for identifiers.