Abstract: A method and system are provided for compressing information to be sent from a server to a client such as a portable communication device. The server maintains first and second dictionaries for each portable device in the system. The first dictionary is provided to the portable communication device. The server generates more recent second dictionaries as new data comes into the server to be sent to a particular portable device. Communication between the server and a particular portable device is possible over a low cost wire line connection or a more expensive wireless connection. The more recent and accurate second dictionary, together with data compressed using the second dictionary, is sent to the portable device when the portable device is connected to the server by the less expensive wire line connection.

Abstract: A method is provided for packaging software which includes a digitally signed data portion and a filename. An entity such as a software distributor provides information which is to be conveyed to the end user with a software package. The information in encoded and then added to the name of the file without altering the digitally signed data portion of the file. In this manner, information is added to the file data portion without breaking the digital signature. The software package thus created is sent to the end user by the retail channel or by downloading to the user's computing device. Once received by the user's computing device, the information is decoded and displayed to the user. The data portion of the file is then installed and executed.

Abstract: A method and system are provided for compressing information to be sent from a server to a client such as a portable communication device. The server maintains first and second dictionaries for each portable device in the system. The first dictionary is provided to the portable communication device. The server generates more recent second dictionaries as new data comes into the server to be sent to a particular portable device. Communication between the server and a particular portable device is possible over a low cost wire line connection or a more expensive wireless connection. The more recent and accurate second dictionary, together with data compressed using the second dictionary, is sent to the portable device when the portable device is connected to the server by the less expensive wire line connection.