Microtech PCD-47B Manual de usuario descargar pdf (Pagina 10)

US

7,597,268

B2

3

and

is

controlled

from

the

host

side.

Since

the

module

itself

is

devoid

of

any

controller

it

can

be

expanded

easily

to

add

additional

memory.

Card

Detection

FIG.

3

is

a

table

Which

illustrates

hoW

a

particular

card

Will

be

detected

by

a

device.

In

this

embodiment,

When

the

Smart

Stack

module

(i.e.,

SmartStack

NAND

or

SmartStack

NOR)

is

plugged

into

the

slot,

the

card

detect

pins

(CD1

and

CD2)

Will

be

loW.

For

compatibility

With

a

device

that

can

read

a

SmartStack

module

card,

the

card enable

pins

(CE1

and

CE2)

Will

also

be

loW.

As

is

also

seen,

the

other

memory

modules

Will

have

a

different

pin

con?guration

for

detection.

Addressing

FIG.

4

is

a

table

Which

illustrates

addressing

of

the

Smart

Stack

module.

In a

preferred

embodiment,

the

SmartStack

module

Will

be

programmed

in

a

manner

that

is

similar

to

a

conventional

memory

module.

The

only

difference

Will

be

the

chip

selects.

FIG.

4A

illustrates

the

relationship

betWeen

the

Smart

Stack

module

address

lines

(S0

. . .

S3)

and

their

equivalent

pins

in

a

CompactFlash

card.

Security

and

Biometric

Information

FIG.

5

illustrates

a

SmartStack

module

300

Which

includes

the

Write

protect

mechanism

302,

security

area

304

and

bio

metric

area

306.

The

Write

protect

mechanism

can

be

locked

or

unlocked

to

alloW

for

Writing

to

the

module.

The

Write

protect

mechanism

in

a

preferred

embodiment

may

be

read

by

softWare

to

prevent

Writing

in

the

user

area.

It

may

be

neces

sary

to

allocate

space

for

security

andbiometric

on

each

of

the

individual

?ash

media,

in

Which

case

the

same

table

Will

be

used

to

create

this

information.

As

is

seen

in

this

embodiment,

the

biometric

area

304

and

secure

area

306

are

allocated

on

102a‘.

One

of

ordinary

skill

in

the

art

recogniZes

that

the areas

302

and 304

could

be

located

in

any

or

all

of

the

?ash

chips

102a'-102n'

and

that

Would

be

Within

the

spirit

and

scope

of

the

present

invention.

FIG.

6

is

a

table

Which

illustrates

the

setting

of

a

secure

area

of

data

for

the

SmartStack

module. For

providing

a

secure

area

in

the

SmartStack

module,

in

a

preferred

embodiment

the

folloWing

method

Will

be

folloWed:

the

?rst

tWo

bytes,

byte

0

and

byte

1,

Will

be

set

to

C3

B6.

The

next

byte,

byte

2,

de?nes

the

function.

In

addition,

byte

5

(block

status

?ag)

Will

alWays

be

set

to

OxFO

(or

OxOF)

to

indicate

a

failed

block

so

that

an

operating

system

or

?rmWare

Will

not

Write

over

it

acciden

tally.

An

additional

improvement

for

performance

Would

be

to

add

random

access

memory

(RAM)

to

the

stack.

FIG.

7

illustrates

adding

a

RAM

402

to

SmartStack

module

400

to

improve

performance.

By

adding

the

RAM

402

to

the

module

400,

data

can

be

cached

thereto

thereby alloWing

for

faster

access

to

data

in

the

module.

Additionally

the

SmartStack

module

can be

designed

to

function

like

daughter

boards

on

a

base

board

so the

capacity

can be modularly

increased.

The

SmartStack

module

can

also

be

designed

such

that

you

can

plug

one

card

at

the

end

of

the

previous

one

to

form

a

chain

(or

daisy

chain).

FIG.

8

illustrates

daisy-chaining

a

plurality

of

SmartStack

modules

500

and

502

in

accordance

With

the

present

inven

tion.

Accordingly,

in

this

embodiment,

one

SmartStack

mod

ule

500

Would

include

a

female

connector

506

on

one end and

a

male

(expansion

port)

connector

508

on

the

other

to

alloW

more

cards

to

be

plugged

in.

In

an

alternate

embodiment,

the

expansion

card

can

be

itself

devised

to

have

several

expansion

ports

(female

connector)

into

Which

users

can

plug

in

Smart

Stack

modules.

The

SmartStack

module

can

optionally

20

25

30

35

40

45

50

55

60

65

4

enable

the

user

to

have

the

capability

of

being

able

to

revieW

the

pictures

before

committing

it

(saving

it)

to

the

?ash

media

itself.

FIG.

9

illustrates

a

SmartStack

module

600

Which

is

an

expansion

bay.

In

this

embodiment,

additional

SmartStack

modules

can be

plugged

into

male

connection

slots

602

and

the

female

connection

604

Would

connect

to

a

SmartStack

enabled

CompactFlash

Host.

Although

the

present

invention

has

been

described

in

accordance

With

the

embodiments

shoWn,

one

of

ordinary

skill

in

the

art

Will

readily

recogniZe

that

there

could

be

variations

to

the

embodiments

and

those

variations

Would

be

Within

the

spirit

and

scope

of

the

present

invention.

Accord

ingly,

many

modi?cations

may

be

made

by

one

of

ordinary

skill

in

the

art

Without

departing

from

the

spirit

and

scope

of

the

appended

claims.

The

invention

claimed

is:

1.

A

memory

module,

comprising:

a

memory

residing

at

the

memory

module

that

is

to

be

controlled

by

a

controller

on

a separate

device;

and

a

connector

to

interface

With

the separate

device,

the

con

nector

comprising

a

pin

con?guration

to

identify

to

the

separate

device

to

use

the

controller

of

the separate

device

to

control

the

memory

of

the

memory

module;

Wherein

the

memory

module

has

no

controller

Within

the

module;

and

Wherein

the

pin

con?guration

comprises

a

?rst

card

enable

pin

and

a

second

card enable

pin,

the

?rst

and

second

card

enable

pins

are

to

be

loW

to

indicate

to

the separate

device

that

the

memory

module

has

no

controller.

2.

The

memory

module

of

claim

1,

further

comprising

a

second

connector

to

interface

With

a

second

memory

module

having

one

or

more

memory.

3.

The

memory

module

of

claim

1,

Wherein

the

connector

is

con?gured

to

interface

With

a

plurality

of

types

of

devices.

4.

The

memory

module

of

claim

1,

Wherein

the

memory

has

a

security

information

area.

5.

The

memory

module

of

claim

1,

Wherein

the

memory

has

a

biometric

information

area.

6.

The

memory

module

of

claim

1,

Wherein

the

memory

comprises

a

?ash

memory.

7.

The

memory

module

of

claim

3,

Wherein

the

connector

is

con?gured

to

interface

With

at

least

one

of

a

group

consist

ing

of

a

Compact

Flash,

a

Secure

Digital

(SD)

card,

a

Multi

Media

Card

(MMC),

and

a

Memory

Stick.

8.

The

memory

module

of

claim

1,

further

comprising

a

random

access

memory

(RAM)

coupled

With

the

memory.

9.

The

memory

module

of

claim

8,

Wherein

the

RAM

is

coupled

betWeen

the

connector

and

the

memory,

and

the

RAM

comprises

a

cache

memory.

10.

The

memory

module

of

claim

1,

further

comprising

a

plurality

of

connectors,

the

plurality

of

connectors

to

inter

face

With

a

plurality

of

memory

modules.

11.

The

memory

module

of

claim

1,

Wherein

the separate

device

is

at

least

one

of

a

digital

camera,

a

portable

music

player,

a

personal

computer

(PC),

a

?ash

memory

reader,

a

personal

digital

assistant

(PDA),

or

a

device

using

removable

memory.

12.

The

memory

module

of

claim

8,

Wherein

a

user

can

revieW

content

stored

in

the

RAM

before

the

content

is

Writ

ten

to

the

memory.

13.

A

system

comprising:

a

host

device

having

a

controller;

and

a

memory

module,

external

to

the

device,

the

module

hav

ing

a

memory

that

is

to

be

controlled

by

the

controller

on

the

device,

and

the

module

having

a

connector

to

inter

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