Amazon Technologies, Inc.

James R Retzlaff, Ii

John Lattyak

John T Kim

Thomas A Ryan

Laurent An Minh Nguyen

Steven Ka Cheung Moy

Search may be performed on a user device, such as a handheld electronic book reader device. A search query term may be received. Text of a collection of electronic items stored in memory of the user device may be searched, using an item index and/or a master index, for the queried term. Search results may be returned identifying locations in the electronic items at which the queried term appears.

Search and indexing on a user device

A method for efficiently storing index data on an electronic device may include storing index data in data pages within an indexing data structure on the electronic device. The method may also include providing at least one directory for the indexing data structure. The method may also include dynamically modifying how many directory levels are provided for the indexing data structure in response to changes to the data pages within the indexing data structure.

Systems and methods for efficiently storing index data on an electronic device

Electronic items may be searched using search indices. Search indices may be generated for electronic items at a user device. In that case, a list of one or more electronic items stored in memory of the user device may be displayed, and a status of index generation for the electronic items stored in memory of the device may be presented.

Managing status of search index generation

A method for providing digital works based on user preferences is described. Data associated with a plurality of digital works is analyzed. The plurality of digital works are classified based on the data analysis and on a first list and on a second list. The first list includes preferred words, and the second list includes non-preferred words. One or more digital works from the plurality of digital works are transmitted. The one or more digital works transmitted were classified as works to be transmitted using the first list.

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San Jose, CA, United States of America

James R Retzlaff, Ii