Removable computer with mass storage

• US 20080288700A1
• Filed: 06/26/2008
• Published: 11/20/2008
• Est. Priority Date: 08/02/2001
• Status: Active Grant

• Current Assignee: SanDisk Technologies LLC (Western Digital Corporation)
• Original Assignee: Sandisk Technologies Incorporated (Western Digital Corporation)
• Inventors: Pinto, Yosi, Holtzman, Michael
• Granted Patent: US 8,176,335 B2
• Time in Patent Office: Days
• US Class Current: 710/301
• CPC Class Codes: G06F 21/34 involving the use of external additional devices, e.g. dongles or smart cards
• CPC Class Codes: G06F 21/606 by securing the transmission between two devices or processes
• CPC Class Codes: G06F 21/78 to assure secure storage of data address-based protection against unauthorised use of memory G06F12/14; record carriers for use with machines and with at least a part designed to carry digital markings G06K19/00
• CPC Class Codes: G06F 8/65 Updates security arrangements therefor G06F21/57
• CPC Class Codes: G06F 9/3879 for non-native instruction execution, e.g. executing a command; for Java instruction set
• CPC Class Codes: G06F 9/445 Program loading or initiating bootstrapping G06F9/4401; security arrangements for program loading or initiating G06F21/57

Abstract

The present invention provides a detachable add-on card unit to a host system that combines mass storage capability and a processor on the same card. The card can receive data from the host, process the data, and store it in processed form, as well as the reverse process of retrieving stored data, processing it, and supplying it to the host. The non-volatile mass storage memory may contain program storage as well as card system data and user data. The end user of the card can program applications into the program storage. The combination of mass storage and a processor also adds to the capabilities of the on-card processor, allowing the card to store and execute programs. The present invention is able to provide a programmable add-on card unit to a host system. A number of applications can be stored in the card'"'"'s mass storage and loaded as needed by the on-card micro-controller.

Claims

1. A secured communication system comprising a first apparatus and a second apparatus wherein

said first apparatus comprising

a first host unit having a data receiver for receiving voice data and a transmitter for communicating with said second apparatus;

and

a first card unit detachably coupling to said first host unit, wherein said first host unit transmits said voice data to said first card unit for processing, wherein said first card unit performs data processing on the voice data received from said first host unit, and wherein said processed data is returned to said first host unit from said first card unit,

said second apparatus comprising

a second host unit comprising a receiver for communicating with said first apparatus, wherein the processed data is received from said first host unit to said second host unit; and

a second card unit detachably coupling to said second host unit, wherein said second host unit transmits said processed data received from said first host unit to said second card unit for processing, wherein said second card unit reconstructs said voice data from said processed data, and wherein the reconstructed voice data is returned to said second host unit from said second card unit.

2. The secured communication system according to claim 1, wherein said first card unit encrypts said voice data received, and said second card unit decrypts the encrypted voice data.

3. The secured communication system according to claim 1, wherein said first card unit compresses said voice data received, and said second card unit decompresses the compressed voice data.