Cypress CY62167EV18 Manual do Utilizador descarregar pdf (Página 13)

US

8,121,078

B2

5

mation

via the

second

wireless

network.

The

low-bandwidth

transceiver

can

be

con?gured

to

consume

less

than

4

mW

of

power

in

constant

operation

or

operate

in

a

polling

mode

that

reduces

an

average

energy

consumption

of

the

camera.

The

base

station

can

include

timing

circuits

con?gured

to

be

syn

chronized

with

the

cycle

of

the polling

mode

in

the

receiver.

Each

of

the

one

or

more

battery

powered

wireless

cameras

can

include

a

storage

device

con?gured

to store

the

informa

tion

at

a

?rst

?delity.

The

information

can

be

transmitted

to

the

base

station

at

a

second

?delity,

and

the

?rst

?delity

is

different

from

the

second

?delity.

The

one

or

more

wireless

cameras

can

be

con?gured

to

be

powered

up

to

obtain

infor

mation

in

response

to

a

trigger

event

caused

by

one

of

a

sound

detection,

an

infrared

motion

detection,

an

ultrasonic

detec

tion,

a

video

processing

based

movement

detection,

a relay

switch,

a

micro

switch,

and

a radio signaling

circuitry.

Each

of

the

one

or

more

wireless

cameras

can

further

include

a

storage

device

con?gured

to

store

captured information

for

a

predetermined

period

of

time.

The

stored

captured

informa

tion

can

be

transmitted

to

the

base

station in

response

to

a

trigger

event.

Each

of

the

one

or

more

wireless

cameras

can

include

a

?rst

switch

con?gured

to

control

one

or

more

of

operation

in

darkness,

operation

based

on

sound

detection,

operation

based

on

infrared

motion

detection,

operation

based

on

ultra

sonic

detection,

and

operation

by

triggers;

and

a

second

switch

con?gured

to

indicate

operation

duration

of

the

one

or

more

wireless

cameras.

A

frame

rate

can be

obtained

based

on

the

operation

duration

so

that

the

internal

battery

can

last

substantially

for

the

operational

duration

indicated

by

the

switch.

Each

of

the

one

or

more

battery

powered

wireless

cameras

can

further

include

an

uncompressed

image

capture

module

con?gured

to

operate

based

on

periods

that

are

different

from

the

burst

periods.

The

image

capture

rate

and

the

burst

trans

mission

rate

can

be

based

on

motion

detection,

and

further

wherein

when

motion

is

detected

in

the

captured

images,

the

image

capture

frame

rate

is

increased,

and

when

motion

is

not

detected

in

the

captured images,

the

image

capture

frame

rate

is

decreased.

The

internal

battery

of

the

wireless

camera

can

be

based

on

one

or

more

of

solar

cells,

fuel

cells,

galvanic

cells,

?ow

cells,

kinetic

power

generators,

and

environmental

energy

sources.

The

internal

battery

output

voltage

can be

boosted

or

regu

lated

by

an

active

power

management

circuitry.

The

internal

battery

can

be

recharged

by

one

or

more

of

solar

cells,

fuel

cells,

galvanic

cells,

?ow

cells,

kinetic

power

generators,

and

environmental

energy

sources.

The

internal

battery

can

include

an

array

of

rechargeable

battery

cells

con?gured

to

extend

the

useable

lifetime

of

the

rechargeable

array

to

be

greater

than

a

lifetime

of

a

single

rechargeable

battery

cell,

and

less

than

the

entire

array

of

rechargeable

battery

cells

are

used

at

a

given

time.

The

useable

lifetime

of

the

internal

battery

can

be

extended

by

controlling

the

current

withdrawal

of

the

rechargeable

battery

cells

to

within

a

predetermined

current

limit.

The

controlling

of

current

withdrawal

from

the

internal

battery

can

be

performed

through

a

high

ef?ciency

regulation

circuit

that

includes

a

switching

regulator

for

drawing

a

limited

current

?ow

from

the

battery

cells,

and

a

capacitor

for

tem

porary

storage

of

energy.

The

internal

battery

can

be

replaced

by

a

high

capacity

capacitor

and

a

charging

circuitry

associ

ated

with

the

capacitor.

The

internal

battery

can

include

at

least

a

high

capacity

capacitor

and

a

rechargeable

battery.

Each

of

the

one

or

more

battery

powered

wireless

cameras

can

include

a

compression

module

con?gured

to

operate

based

on

periods

that

are

different

from

the

burst

periods.

20

25

30

35

40

45

50

55

60

65

6

Each

of

the

one

or

more

battery

powered

wireless

cameras

can

capture

and

transmit

audio

information

and

sensor

infor

mation.

Each

of

the

one

or

more

battery

powered

wireless

cameras

can

be

surface

mountable

and

can

include

a

housing

that

has

a

solar

panel

con?gured

to

recharge

the

internal

battery.

Particular

aspects

can

be

implemented

to

realize

one

or

more

of

the

following

potential

advantages.

An

architectural

change

in

the

wireless

camera

can be

implemented

to

obtain

signi?cant

power

savings

in

wireless

network

camera

sys

tems.

Such

a

design

change can

offer

substantial

power

sav

ings

over

commonly

understood

power-reducing

techniques

such

as

using

more

ef?cient

electronic

components

in

the

radio

transceivers,

image

capture,

and

compression

inte

grated

circuits.

An

ultra-low

power

wireless

camera

can

be

obtained

with

out

compromising

the

ability

of

new

and

existing

client

sys

tem

to

access

data

using

standarle

connections

and

standard

or

de-facto

application

programming

interfaces

(APls).

In

particular,

the

base

station

code

can

comply

with

well

estab

lished

1P

camera

APl’s.

Additionally,

even

though

the

wire

less

camera

can

operate

at

an

ultra-low

average

power,

during

the

burst

period

when

the

camera

is

transmitting

data

to

the

base

station,

the

camera

can

allow

for

power

consumption

in

excess

of

100

mW.

This

is

in

contrast

to

existing

wireless

sensors

which

will

typically

consume

less

than

100

mW

of

power

when

transmitting

data.

Multiple

wireless

cameras

(e.g.,

up

to

16

wireless

cameras)

can

be

assigned

to

a

single

base

station.

The

base

station

and

wireless

camera

combination can

deliver

all

the

intelligence

and

features

expected

for

a

commercial

grade

1P

camera

solution.

The

solution

integrates

into

existing

IP

networks

and

exposes

standard

video

monitoring

application

interfaces

so

that

popular

video

surveillance

data

applications

can

be

used.

This

makes

for

rapid,

seamless

and

pain

free

deployment.

From

the

network

perspective,

the

combo

processing

ensures

that

all

wireless

cameras

appear

to

be

100%

compatible

1P

cameras.

Video

can

be

delivered

compressed

to

industry

stan

dard format

such

as

M] PEG

or

MPEG-4,

ready

to

be

accessed

and

managed

by

industry

standard

software.

The

base

station

can

connect

to

a

regular

wired

Ethernet

LAN

and

on

to

the

lntemet,

just

like

any

1P

surveillance

system.

A

seamless

integration

can

occur

over

a

standard

802.1

1b/g/n

wireless

Ethernet

network.

Since

it

can be

wire

less

to

the

Internet

access

point,

the

distance

range

of

the

wireless

network

camera

system can

be

as

wide

as

today’s

wireless

systems.

The

user

can

perform

a

walk-through

wiZ

ard

once,

and

begin

installing

multiple

security

cameras

any

where

within

the

range

of

the

base

station.

Further,

a

battery

powered

wireless

camera

operation

can

be

achieved

using

well

established

components.

Battery

pow

ered

wireless

network

camera

systems

can

be

achieved

with

out

additional

external

power

source

or

cabling.

These

sys

tems

can

have

standard

web

server

capability

for

client

access

to

the

captured

data.

Because

no

power

cabling

is

needed,

these

battery

powered

wireless

network

camera

systems

can

be

deployed

in

locations

where

previously

difficult

to

service.

Camera

operation

for

extended

periods

of

time

can

be

obtained

using

small

battery

packs.

By

using

modi?ed

media

access

techniques,

unreliable

or

inconsistent

connectivity

associated

with

the

standard

IEEE

802.1

1

wireless

links

can

be

avoided.

Additionally,

the

erratic

set-up

and/

or

operation

of

a

wireless

link

due

to

interference

or

other

environmental

factors

can be

minimized.

The

draw

backs

of

the

IEEE

802.11

MAC

standards

in

poor

connection

conditions

can be

overcome

by

observing

interference

and

also

using

techniques

to

reserve

and

hold

a

connection

for

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