# US 8,543,715 B1 · Redirect control in web browsers

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- Number: US 8,543,715 B1
- Document ID: US8543715B1
- Status: Granted
- Kind: B1
- Application number: 13/004,958
- Filed: 2011-01-12
- Granted: 2013-09-24
- Earliest claimed: 2010-10-25
- Assignees: Google Inc.
- Applicants: Richard Rabbat; Eyal Manor
- Inventors: Richard Rabbat; Eyal Manor
- Web page: https://patentgrep.com/patent/US8543715B1

## CPC

- G06Q 30/0277: {Online advertisement}
- G06F 16/951: Indexing; Web crawling techniques
- G06F 16/972: {Access to data in other repository systems, e.g. legacy data or dynamic Web page generation}
- G06Q: INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)

## Abstract

The capability to limit the number of user redirects for a third-party content provider or third-party content provider network, such as, for example, an advertiser or advertising network, is provided. Such a capability extends the functionality of an attribute of a HyperText Markup Language (HTML) element to establish a limit to the number of user redirects. Accordingly, such a limit can be used to enforce restrictions on the number of user redirects through a user's web browser.

## Claims

### Claim 1

A computer-implemented method for limiting user redirects within a web browser, comprising:
parsing a frame element in a plurality of elements to identify one or more attributes of the frame element, the plurality of elements encoded in a web page retrieved in response to a user request;
determining a redirect limit for the frame element from among the one or more identified attributes, wherein the redirect limit specifies a maximum number of user redirects for a third-party resource corresponding to the frame element; and
responding to a redirect request associated with the third-party resource based on the determined redirect limit, wherein the redirect request is ignored when the redirect limit is exceeded.

### Claim 2 (depends on 1)

The method of claim 1, wherein the plurality of elements are Hypertext Markup Language (HTML) elements.

### Claim 3 (depends on 2)

The method of claim 2, wherein the frame element is an inline frame element.

### Claim 4 (depends on 3)

The method of claim 3, wherein the inline frame element is associated with a third-party content delivery system.

### Claim 5 (depends on 4)

The method of claim 4, wherein the responding comprises:
incrementing a redirect counter value in response to receiving the redirect request;
comparing the incremented redirect counter value with the determined redirect limit; and
ignoring the redirect request when the redirect counter value exceeds the determined redirect limit.

### Claim 6 (depends on 5)

The method of claim 5, further comprising:
transmitting an error code to the third-party content delivery system when the redirect counter value exceeds the determined redirect limit.

### Claim 7 (depends on 6)

The method of claim 6, wherein the third-party content delivery system is an advertising delivery system and the third-party resource is an advertisement.

### Claim 8 (depends on 6)

The method of claim 6, wherein the inline frame element of the web page is encoded using an HTML tag having an attribute that specifies the redirect limit.

### Claim 9 (depends on 8)

The method of claim 8, wherein the HTML tag is a sandbox tag.

### Claim 10

A system for limiting user redirects in a web browser, comprising:
one or more processors;
a parser, implemented on the one or more processors, to parse a frame element in a plurality of elements to identify one or more attributes of the frame element, the plurality of elements encoded in a web page retrieved in response to a user request, and to determine a redirect limit for the frame element from among the one or more identified attributes, wherein the redirect limit specifies a maximum number of user redirects for a third-party resource corresponding to the frame element; and
a network engine, implemented on the one or more processors, to respond to a redirect request associated with the third-party resource based on the redirect limit, wherein the redirect request is ignored when the redirect limit is exceeded.

### Claim 11 (depends on 10)

The system of claim 10, wherein the plurality of elements are Hypertext Markup Language (HTML) elements.

### Claim 12 (depends on 11)

The system of claim 11, wherein the frame element is an inline frame element.

### Claim 13 (depends on 12)

The system of claim 12, wherein the inline frame element is associated with a third-party content delivery system.

### Claim 14 (depends on 13)

The system of claim 13, further comprising:
a rendering engine, implemented on the one or more processors, to render the inline frame element with the third-party resource within the web page using a display device, wherein the third-party resource is provided by the third-party content delivery system.

### Claim 15 (depends on 13)

The system of claim 13, wherein the network engine is configured to:
increment a redirect counter value in response to receiving the redirect request;
compare the incremented redirect counter value with the determined redirect limit; and
ignore the redirect request when the redirect counter value exceeds the determined redirect limit.

### Claim 16 (depends on 15)

The system of claim 15, wherein the network engine is further configured to transmit an error code to the third-party content delivery system when the redirect counter value exceeds the determined redirect limit.

### Claim 17 (depends on 13)

The system of claim 13, wherein the third-party content delivery system is an advertising delivery system and the third-party resource is an advertisement.

### Claim 18 (depends on 13)

The system of claim 13, wherein the inline frame element of the web page is encoded using an HTML tag having an attribute that specifies the redirect limit.

### Claim 19 (depends on 18)

The system of claim 18, wherein the HTML tag is a sandbox tag.

### Claim 20 (depends on 10)

The system of claim 10, wherein the parser and the network engine are implemented as components of the web browser.