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United States Patent
Jigour et al.
US006026007A [ii] Patent Number:  Date of Patent:
 INSERTABLE AND REMOVABLE HIGH
CAPACITY DIGITAL MEMORY APPARATUS
AND METHODS OF OPERATION THEREOF
 Inventors: Robin J. Jigour; David K. Wong, both of San Jose, Calif.
 Assignees: Integrated Silicon Solution, Inc.; Nex Flash Technologies, Inc., both of Santa Clara, Calif.
[ * ] Notice: This patent is subject to a terminal disclaimer.
 Appl. No.: 09/084,044  Filed: May 22, 1998
Related U.S. Application Data
 Continuation of application No. 08/823,937, Mar. 25, 1997, Pat. No. 5,815,426, and a continuation-in-part of application No. 08/689,687, Aug. 13, 1996, Pat. No. 5,877,975.
 Int. C I. G11C 5/02
 U.S. CI 365/51; 365/52; 365/63;
 Field of Search 365/51, 63, 52,
 References Cited
U.S. PATENT DOCUMENTS
ETSI, Draft pr ETS 300 608 Third Edition, European digital cellular telecommunications system (Phase 2); Specification of the Subscriber Identify Module—Mobile Equipment (SIM-ME) Interface (QMS 11.11), Dec, 1995. Intel Corporation, Miniature Card Specification Release 1.0, Feb. 29, 1996.
ISO/IEC, International Standard ISO/IEC 7816-3 First Edition, Identification cards—Integrated Circuit(s) with contacts—Part 3: Electronic signals and transmission protocols, Sep. 15, 1989.
ISO, International Standard ISO 7816-2 First Edition, Identification cards—Integrated Circuit(s) with contacts—Part 2: Dimensions and location of the contacts, May 15, 1988. ISO, International Standard ISO 7816-1 First Edition, Identification cards—Integrated Circuit(s) with contacts—Part 1: Physical characteristics, Jul. 1, 1987. ITT Cannon, CCM Smart Card Connectors, 1996. Nexcom Technology, Inc., NX26F080 Data Sheet, Mar. 1996.
Nikkei Electronic Asia; Three Stamp-Sized Flash Cards Appear in Electronic Cameras; Special Report; pp. 62-67, Jul. 1996.
PCMCIA/JEIDA, PC Card Standard, Physical Specification, Feb. 1995.
Portable Design; Memories are Made of This; article; Jul. 1996; pp. 23-24.
SunDisk Corporation, Compact Flash Series, Rev. 1.0, Oct. 1994.
Toshiba America Electronic Components, Inc., Solid-State
Floppy Disk Card (SSFDC) TC5816ADC 1996 Data Sheet
(preliminary) NV 16030496; 16Mbit (2Mx8 BIT) CMOS
NAND EEPROM; Apr. 1996; specification; page 1.
Toshiba America Electronic Components, Inc.,
TC5816ADC Data Sheet, 1996.
Xicor, Inc., Data Book, Jul. 1995.
Primary Examiner—David Nelms
Assistant Examiner—Hoai V. Ho
Attorney, Agent, or Firm—David H. Carroll
FOREIGN PATENT DOCUMENTS WO 96/02034 1/1996 WIPO .
Each device of a family of removable digital media devices (310, 320, 330, 340, 350 and 360) may be plugged into a host to permits the host to store data in it or to retrieve data
from it. The form factors of the digital media devices in the family and the connector system used by the digital media devices are compact for minimizing the volume of space occupied in portable devices and for easy storage. Some embodiments (310, 320, 330, 350 and 360) provide an elongated compact form factor that provides easy and firm grasping for insertion and removal. The digital media devices of the family have respective body portions (312, 322, 332, 342, 352 and 362) preferably of a rigid or semi-rigid material. Preferably, the digital media devices of the family use serial memory requiring few power and signal lines, so that few electrical contacts are required. In particular, a small number of durable contact pads form the contact arrays (314, 324, 334, 344, 354 and 364) on the digital media devices, which in conjunction with corresponding contact pads mounted into a suitable socket pro
vide for easy and convenient insertion and removal and for robust and reliable electrical contact over a long insertion lifetime. Preferably, the digital media devices of the family incorporate flash memory, which permits low voltage operation, low power consumption, and high capacity nonvolatile data storage. Preferably, the digital media devices of the family are fabricated using surface mount techniques (310 and 320) or particularly inexpensive "Chip on Board" techniques (330, 340, 350 and 360). The digital media devices interface to the host either directly or through adapters. Access is handled either by a dedicated controller or other logic residing in the adapter or on the host, or by software running on the host.
37 Claims, 12 Drawing Sheets