Cypress CY62167EV18 Manual do Utilizador descarregar pdf (Página 11)

US

8,121,078

B2

1

WIRELESS

NETWORK

CAMERA

SYSTEMS

CROSS-REFERENCE

TO

RELATED

APPLICATIONS

This

application

is

a

continuation

of

US.

patent

applica

tion

Ser.

No.

12/515,691,

?led

Feb.

19,

2010,

which

is

a

national

stage

application

of

and

claims

the

bene?t

of

Inter

national

Application

No.

PCT/US2007/085308,

?led

on

Nov.

20,

2007,

which

claims

priority

to

US.

Provisional

Applica

tion

Ser.

No.

60/896,158,

?led

on

Mar.

21,

2007 and

US.

Provisional

Application

Ser.

No.

60/866,587,

?led

Nov.

20,

2006.

The

disclosure

of

the

entire

prior

listed

patent

applica

tions

is

considered

part

of

the disclosure

of

this

application

and

is

incorporated

by

reference.

BACKGROUND

OF

THE

INVENTION

This

disclosure

generally

relates

to

providing

battery

pow

ered

wireless

network

camera

systems.

Network

camera

systems

can

be

based

on

the

Internet

protocol

(IP)

and

use

Ethernet

based

networking

technology.

In

some

applications,

network

camera

systems

are

replacing

analog

closed

circuit

television

(CCTV)

due

to

various

fac

tors,

such

as

accessibility,

ease-of-use,

cabling

scalability,

and

lower

cost

of

deployment

and

operation.

With

the

ubiq

uity

of

wireless

networks

such

as

WiFi

networks

(based

on

IEEE

802.1

1

standards)

and

the

emerging

WiMAX

networks

(based

on

IEEE

802.16

standards),

wireless

network

camera

systems

are

gaining

popularity

and

are

expected

to

become

the

dominant

platform

for

video

surveillance

applications.

In

an

IP

surveillance

environment,

the

network

camera

system can

include

IP

cameras

connected

via

twisted

pair

cabling

to

a

network

switch.

Alternatively,

the

network

con

nection

can

be

achieved

using

wireless

local

area

networking

(LAN)

technology;

e.g.,

the

IEEE

802.11b

standard.

In

vari

ous

applications,

IP

cameras

can

include

a

web-server

capa

bility

and

remote

clients

or

observers

connected

to

the

camera

via

standard

TCP/IP

interface

standards

such

as

FTP

or

HTTP.

IP

based

network

camera

systems

can

be

designed

using

commercial

off-the-shelf

(COTS)

components

from

a

diverse

number

of

suppliers.

BRIEF

SUMMARY

OF

THE

INVENTION

This

speci?cation

describes

various

aspects

relating

to

bat

tery

powered

wireless

network

camera

systems,

apparatus

and

methods

of

providing

such

systems.

For

example,

the

systems,

apparatus

and

techniques

described

herein

can

be

implemented

in

ways

that

provide

wireless

IP

video

systems

that

require

no

power

cable

and

can

potentially

operate

on

standard

off-the-shelf

battery

solutions

for

over

a

year.

In

addition,

the

systems,

apparatus

and

techniques

described

herein

can

be

implemented

in

ways

to

resolve

the

interfer

ence,

interoperability

and

reliability

problems

currently

asso

ciated

with

existing

wireless

camera

systems.

One

aspect

of

the

subject

matter

described

in

this

speci?

cation

can be

embodied

in

a

system

that

includes

a

battery

powered

wireless

camera

including

an

internal

battery

to

provide

energy

and

a

burst

transmission

unit

to

transmit

infor

mation

during

burst

periods.

The

system

also

includes

a

base

station,

separated

from

the

battery

powered

wireless

camera,

in

wireless

communication

with

the

battery

powered

wireless

camera

to

receive

information

from

the

battery

powered

wire

less

camera.

The

base

station

is

con?gured

to

process

the

received

information

and

includes

a

web

server

to

transmit

20

25

30

35

40

45

50

55

60

65

2

the

processed

information

to

a

client.

Other

embodiments

of

this

aspect

include

corresponding

methods,

apparatus,

and

computer

program

products.

Another

aspect

of

the

subject

matter

described

in

this

speci?cation

can be

embodied

in

a

wireless

camera

system

which

includes

a

battery

powered

wireless

camera

including

an

internal

battery

to

provide

energy

and

a

burst

transmission

unit

to

transmit

information during

burst

periods.

The

system

also

includes

a

base

station,

separated

from

the

battery

pow

ered

wireless

camera,

in

wireless

communication

with

the

battery

powered

wireless

camera

to

receive

information

from

the

battery

powered

wireless

camera.

The

base

station

is

con?gured

to

process

the

received

information

and

including

a

web

server

to

transmit

the

processed

information

to

a

client,

and

the

base

station

is

powered

by

a

power

cable

connected

to

an

external

power

source.

The

burst

periods

are

determined

based

on

at

least

one

of

a

wireless

link

channel average

bandwidth

capacity,

a

?delity

of

images

transmitted,

and

a

latency

of

establishing

and

terminating

a

wireless

connection

between

the

battery

powered

wireless

camera and

the

base

station.

A

further

aspect

of

the

subject

matter

described

in

this

speci?cation

can

be

embodied

in

a

system

that

includes

a

base

station

which

includes

a

?rst

receiver

con?gured

to

receive

information

in

a

?rst

wireless

network

and

a

second

transmit

ter

con?gured

to

transmit

information

in

a

second

wireless

network.

The

system

also

includes

a

remote

node

which

includes

a

?rst

transmitter

con?gured

to

transmit

information

in

the

?rst

wireless

network

and

a

second

receiver

con?gured

to

receive

information

in

the

second

wireless

network.

The

second

transmitter

is

further

con?gured

to

transmit

control

information

from

the

base

station to

the

remote

node

via

the

second

wireless

network

and

the

?rst

transmitter

is

further

con?gured

to

transmit

compressed

video

information

from

the

remote

node

to

the

base

station

via the

?rst

wireless

network.

Additionally,

the

second

receiver

in

the

remote

node

is

further

con?gured

to

operate

for

substantially

longer period

of

time

than

the

?rst

transmitter

in

the

remote

node.

Further

more,

the

second

receiver

in

the

remote

node

can

be

con?g

ured

to

operate

continuously

for

periods

of time

exceeding

5

hours

while

drawing

less

than

10

mW

of

power.

Yet

another

aspect

of

the

subject

matter

described

in

this

speci?cation

can

be

embodied

in

a

method

that

includes

transmitting

information,

by

one

or

more

battery

powered

wireless

cameras

having

internal

batteries

in

a

wireless

link.

The

transmitting

of

information during

burst

periods.

The

method

also

includes

receiving

information

by

a

base

station,

and

the

base

station

includes

a

web

server.

The

method

further

includes

processing

the

received

information

in

the

base

sta

tion,

and

transmitting,

by

the

web

server,

the

processed

infor

mation

to

a

client.

In

another

aspect,

a

wireless

camera

system

includes

a

battery

powered

wireless

camera

having

an

internal

battery

to

provide

energy

and

a

burst

transmission

unit

to

transmit

infor

mation

during

burst

periods.

The

system

also

includes

a

base

station,

separated

from

the

battery

powered

wireless

camera,

in

wireless

communication

with

the

battery

powered

wireless

camera

to

receive

information

from

the

battery

powered

wire

less

camera.

The

base

station

is

con?gured

to

process

the

received

information

and

the

burst

periods

are

determined

based

on

at

least

one

of

a

wireless

link

channel average

bandwidth

capacity,

a

?delity

of

images

transmitted,

and

a

latency

of

establishing

and

terminating

a

wireless

connection

between

the

battery

powered

wireless

camera and

the

base

station.

In

a

further

aspect,

a

wireless

camera

system

includes

a

solar

powered

wireless

camera

that

includes

at

least

one

solar

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