17-03-2010, 07:56 AM
[attachment=2694]
JAVA RING
JAVA RINGS..
OUTLINE
HISTORICAL BACKGROUND
In the summer of 1989, Dallas Semiconductor Corp.
produced the first stainless-steel-encapsulated memory
devices utilizing the Dallas Semiconductor 1-Wire
communication protocol.
By 1990, this protocol had been refined and employed
in a variety of self-contained memory devices.
Originally called "touch memory" devices, they were
later renamed iButtons
One of the first impressive devices powered by the Java Card
technology came in the form of now famous Java Rings at the
 Sun's JavaOne conference, in March 1998.
WHAT IS JAVA RING ??
The Java Ring is a stainless-steel ring, 16-millimeters (0.6 inches) in diameter that houses a 1-million-transistor processor, called an iButton
The Java Ring is a tiny wearable computer with 134kilobytes of RAM.
RAM has 6KB of data memory and to 32KB 0f program memory
6KB may not sound like much, but it is 20 percent more memory
than the first computer ever used .
Even 6 K is enough to hold your secret codes, your credit cards
numbers, your driver license, other wallet contents, and even some electronic cash. The ring can also store a few important URLs.
CONTD..
The Java Ring is a wearable computer that can be used to
authenticate users to services on the Internet. A user only has to
push the ring on her finger on a Java Ring reader for about a
second.
The key issue about a wearable computer is not whether it is a ring
or another form factor: the deciding point is that we will always
have it with us. Many aspects of computing change once there
is no need to go to a special room to get at the computer.
INSIDE JAVARING
JAVA VIRTUAL MACHINE
134KB RAM
32KB ROM
REAL TIME CLOCK
IBUTTON
BLUE DOT RECEPTOR
CONTD..
JAVA VIRTUAL MACHINE
JVM is the piece of software that recognises java language and translate the byte code, which is used by system connected to java ring via reader.
134KB of RAM
* It is used to store program and data.
* The NVRAM offers high R/W speed and also provides temper resistance through instantaneous clearing of all memory when tempering is detected. This process called as Rapid Zeroization.
* Energy provided by lithium backup preserves complete state of machine when java ring is disconnected from user.
CONTD..
* Performs garbage collection to deal with the objects which are out of scope and recycle memory.
* Applets can be loaded or unloaded from java iButton
32KB of ROM
* Special kind of operating system called E-commerce based on java and JVM is stored in the ROM. This is because it is not supposed to be altered by the user.
* Operating system handles all operations happening in iButton.
REAL TIME CLOCK
* It gives exact time of the day. It can run upto 10 years by energy provided by lithium backup.
* Processor clock frequency is not constant and cannot be determined by external means.
iButton
The jewel of the Java Ring is the Java iButton
The iButton is a computer chip enclosed in a 16mm thick stainless steel can. Because of this unique and durable container, up-to-date information can travel with a person or object anywhere they go.
Designed to be fully compatible with the Java Card 2.0 standard the processor features a high-speed , large RAM and ROM memory capacity, and an unalterable real-time clock.
It is small and portable enough to attach to a key fob, ring, watch, or other personal items
iButton components
An iButton uses its stainless steel
can :
It is an electronic communications
interface. Each can has a data contact,
called the 'lid', and a ground contact,
called the 'base'. Each of these contacts
is connected to the silicon chip inside.
Grommet :
The two contacts are separated by a polypropylene grommet.
Layout of iButton
By simply touching the iButton to the two contacts described
above,we can communicate with it through our 1-Wire protocol.
The 1-Wire interface has two communication speeds: standard
mode at 16kbps, and overdrive mode at 142kbps
Information is transferred between your iButton and a PC with a
momentary contact at up to 142kbps. You simply touch your
iButton to a Blue Dot receptor or other iButton probe, which is
connected to a PC.
iButton-Types
Blue Dot Receptor
The R/W operation in java ring is done by blue dot receptor provided by RS232 serial port adapter.
DS1402D-DR8 is a 1-wire network cable designed to connect to any serial or USB 1-wire port that has up to two buttons simultaneously.
Confidential data is stored in Non Volatile RAM memory.
Barrier substrate and triple layer technique deny unauthorized access to NVRAM confidential data.
If any unauthorized access penetrates the two layers, its detected by security processor and data is erased immediately. This is called as Rapid Zeroization.
The communication between iButton and outside world is limited to single line provides security against hard ware attacks.
Processor clock frequency is not constant and cannot be determined by external means.
Authentication is crucial to most applications, since billing and privacy is based on it.
A very easy and convenient way for users.
It is more secure than using passwords, since passwords are short or can be guessed.
It is easier for administrators to maintain the security infrastructure, since only password can be forgotten.
A ring is a personal thing that the user and only the user carries along anytime and anywhere, so that she can authenticate herself in every situation.
It is possible to use a tag on the key ring or a watch instead of a ring.
It can be used as portable data carrier often in harsh environment condition.
APPLICATIONS
Some of the applications of Java ring are in:
e-banking to get the account balance of customer.
Configuring our car components according to preferences.
Opening door to prevent entry of unauthorized users.
Used by students at celebration school outside orlando to store electronic cash, unlock doors, take attendance and to store medical information
CONCLUSION
The Java Ring, therefore, is simply the latest and most complex descendant of a long line of products that have proven themselves to be highly successful in the marketplace. With its stainless steel armour, it offers the most durable packaging for a class of products that likely will suffer heavy use and abuse as personal possessions. The iButton form factor permits attachment to a wide variety of personal accessories that includes rings, watchbands, key fobs, wallets, bracelets, and necklaces, so the user can select a variation that suits his or her lifestyle.
JAVA RING
JAVA RINGS..
OUTLINE
HISTORICAL BACKGROUND
In the summer of 1989, Dallas Semiconductor Corp.
produced the first stainless-steel-encapsulated memory
devices utilizing the Dallas Semiconductor 1-Wire
communication protocol.
By 1990, this protocol had been refined and employed
in a variety of self-contained memory devices.
Originally called "touch memory" devices, they were
later renamed iButtons
One of the first impressive devices powered by the Java Card
technology came in the form of now famous Java Rings at the
 Sun's JavaOne conference, in March 1998.
WHAT IS JAVA RING ??
The Java Ring is a stainless-steel ring, 16-millimeters (0.6 inches) in diameter that houses a 1-million-transistor processor, called an iButton
The Java Ring is a tiny wearable computer with 134kilobytes of RAM.
RAM has 6KB of data memory and to 32KB 0f program memory
6KB may not sound like much, but it is 20 percent more memory
than the first computer ever used .
Even 6 K is enough to hold your secret codes, your credit cards
numbers, your driver license, other wallet contents, and even some electronic cash. The ring can also store a few important URLs.
CONTD..
The Java Ring is a wearable computer that can be used to
authenticate users to services on the Internet. A user only has to
push the ring on her finger on a Java Ring reader for about a
second.
The key issue about a wearable computer is not whether it is a ring
or another form factor: the deciding point is that we will always
have it with us. Many aspects of computing change once there
is no need to go to a special room to get at the computer.
INSIDE JAVARING
JAVA VIRTUAL MACHINE
134KB RAM
32KB ROM
REAL TIME CLOCK
IBUTTON
BLUE DOT RECEPTOR
CONTD..
JAVA VIRTUAL MACHINE
JVM is the piece of software that recognises java language and translate the byte code, which is used by system connected to java ring via reader.
134KB of RAM
* It is used to store program and data.
* The NVRAM offers high R/W speed and also provides temper resistance through instantaneous clearing of all memory when tempering is detected. This process called as Rapid Zeroization.
* Energy provided by lithium backup preserves complete state of machine when java ring is disconnected from user.
CONTD..
* Performs garbage collection to deal with the objects which are out of scope and recycle memory.
* Applets can be loaded or unloaded from java iButton
32KB of ROM
* Special kind of operating system called E-commerce based on java and JVM is stored in the ROM. This is because it is not supposed to be altered by the user.
* Operating system handles all operations happening in iButton.
REAL TIME CLOCK
* It gives exact time of the day. It can run upto 10 years by energy provided by lithium backup.
* Processor clock frequency is not constant and cannot be determined by external means.
iButton
The jewel of the Java Ring is the Java iButton
The iButton is a computer chip enclosed in a 16mm thick stainless steel can. Because of this unique and durable container, up-to-date information can travel with a person or object anywhere they go.
Designed to be fully compatible with the Java Card 2.0 standard the processor features a high-speed , large RAM and ROM memory capacity, and an unalterable real-time clock.
It is small and portable enough to attach to a key fob, ring, watch, or other personal items
iButton components
An iButton uses its stainless steel
can :
It is an electronic communications
interface. Each can has a data contact,
called the 'lid', and a ground contact,
called the 'base'. Each of these contacts
is connected to the silicon chip inside.
Grommet :
The two contacts are separated by a polypropylene grommet.
Layout of iButton
By simply touching the iButton to the two contacts described
above,we can communicate with it through our 1-Wire protocol.
The 1-Wire interface has two communication speeds: standard
mode at 16kbps, and overdrive mode at 142kbps
Information is transferred between your iButton and a PC with a
momentary contact at up to 142kbps. You simply touch your
iButton to a Blue Dot receptor or other iButton probe, which is
connected to a PC.
iButton-Types
Blue Dot Receptor
The R/W operation in java ring is done by blue dot receptor provided by RS232 serial port adapter.
DS1402D-DR8 is a 1-wire network cable designed to connect to any serial or USB 1-wire port that has up to two buttons simultaneously.
Confidential data is stored in Non Volatile RAM memory.
Barrier substrate and triple layer technique deny unauthorized access to NVRAM confidential data.
If any unauthorized access penetrates the two layers, its detected by security processor and data is erased immediately. This is called as Rapid Zeroization.
The communication between iButton and outside world is limited to single line provides security against hard ware attacks.
Processor clock frequency is not constant and cannot be determined by external means.
Authentication is crucial to most applications, since billing and privacy is based on it.
A very easy and convenient way for users.
It is more secure than using passwords, since passwords are short or can be guessed.
It is easier for administrators to maintain the security infrastructure, since only password can be forgotten.
A ring is a personal thing that the user and only the user carries along anytime and anywhere, so that she can authenticate herself in every situation.
It is possible to use a tag on the key ring or a watch instead of a ring.
It can be used as portable data carrier often in harsh environment condition.
APPLICATIONS
Some of the applications of Java ring are in:
e-banking to get the account balance of customer.
Configuring our car components according to preferences.
Opening door to prevent entry of unauthorized users.
Used by students at celebration school outside orlando to store electronic cash, unlock doors, take attendance and to store medical information
CONCLUSION
The Java Ring, therefore, is simply the latest and most complex descendant of a long line of products that have proven themselves to be highly successful in the marketplace. With its stainless steel armour, it offers the most durable packaging for a class of products that likely will suffer heavy use and abuse as personal possessions. The iButton form factor permits attachment to a wide variety of personal accessories that includes rings, watchbands, key fobs, wallets, bracelets, and necklaces, so the user can select a variation that suits his or her lifestyle.
