AMX DESIGN XPRESS-PROFESSIONAL V 1.1 - PROGRAMMER GUIDE Uživatelský manuál stáhnout pdf (Strana 16)

US

7,213,061B1

1

INTERNET

CONTROL

SYSTEM

AND

METHOD

This

application

claims

the

bene?t

of

US.

provisional

application

No.

60/131,605,

?led

Apr.

29,

1999.

TECHNICAL

FIELD

OF

THE

INVENTION

This

invention

is

related

in

general

to

the

?eld

of

netWork

control

systems.

More

particularly,

the

invention

is

related

to

an

Internet

control

system

and

method.

BACKGROUND

OF

THE

INVENTION

In a

fully

automated

environment,

appliances

that

change

the

various

parameters

of

the

environment

can

be

inked

to

a

control

area

netWork

(CAN)

and

a

controller.

The

appliances

may

include

heating,

ventilation

and

air

conditioning

(HVAC)

systems,

lighting

systems,

audio-visual

systems,

telecommunications

systems,

security

systems,

surveillance

systems,

and

?re

protection

systems,

for

example.

One

or

more

easy-to-use

user

interface,

such

as

a

touch

panel,

may

be

electronically

linked

to

the

control

area

netWork

to

accept

user

input

and

display

current

system

status.

Panja,

Inc.

of

Dallas,

Tex.

designs

and

manufactures

such

netWorked

appliance

control

systems.

SUMMARY

OF

THE

INVENTION

In

accordance

With

the

present

invention,

a

system

and

method

of

Internet

control

netWork

is

provided

Which

elimi

nates

or

substantially

reduces

the

disadvantages

associated

With

prior

control

systems.

In

one

aspect

of

the

invention,

the

boundaries

betWeen

the

Internet

and

the

control

area

netWork

are

made

transparent

and

the

Internet

becomes

a

device

on

the

control

area

netWork.

The

Internet

is

controllable

by

user

input

entered

on

the

user

interface,

such

as

touch

panel.

The

Internet

is

further

capable

of

receiving

commands

from

the

master

controller

in

the

control

area

netWork.

In

another

aspect

of

the

invention,

Internet

applications

such

as

Web

broWsers

and

applications

executing

on

Web

servers

of

information

content

providers

become

devices

on

the

control

area

netWork.

The

Internet

applications

are

capable

of

sending

commands

to

and

receiving

commands

from

the

control

area

netWork.

In yet

another

aspect

of

the

present

in

invention,

a

communication

protocol

is

provided.

The

communication

protocol

comprises

a

packet

protocol.

The

packet

protocol

has

a

protocol

?eld

for

indicating

the

type

of

protocol,

a

length

of

data

?eld

for

listing

the

length

in

bytes

of

the

data

?eld,

a

data

?eld

containing

sub

protocol

data,

and, a

checksum

for

determining

the

integrity

of

the

packet.

In

yet

another

aspect

of

the

invention,

a

dynamic message

protocol

generator

is

provided

to

enable

a

scripting

language

such

as

VBScript

or

JavaScript

capable

of

directly

commu

nicating

on

any

TCP/IP

netWork

connection.

BRIEF

DESCRIPTION

OF

THE

DRAWINGS

For

a

better

understanding

of

the

present

invention,

ref

erence

may

be

made

to

the

accompanying

draWings,

in

Which:

FIG.

1

is

a

simpli?ed

top-level

block

diagram

of

a

system

and

method

of

coupling

one

or

more

control

systems

to

the

Internet

constructed

according

to

an

embodiment

of

the

present

invention;

FIG.

2

is

a

more

detailed

block

diagram

of

a

system

and

method

of

coupling

one

or

more

control

systems

to

the

20

25

30

35

40

45

50

55

60

65

2

Internet

constructed

according

to

an

embodiment

of

the

present

invention;

FIG.

3

is

a

more

detailed

block

diagram

of

the

processes

and

communications

betWeen

a

Web

server

and

an

Internet

appliance

server

for

coupling

one

or

more

control

systems

to

the

Internet

constructed

according

to

an

embodiment

of

the

present

invention;

FIG.

4

is

a

more

detailed

block

diagram

of

the

Internet

appliance

server

processes

for

coupling

one

or

more

control

systems

to

the

Internet

constructed

according

to

an

embodi

ment

of

the

present

invention;

FIG.

5

is

a

more

detailed

block

diagram

of

the

Internet

appliance

server

softWare

device

emulator

processes

for

coupling

one

or

more

control

systems

to

the

Internet

con

structed

according

to

an

embodiment

of

the

present

inven

tion;

FIG.

6

is

a

?owchart

of

a

process

in

Which

a

content

provider

is

a

control

area

netWork

device

according

to

an

embodiment

of

the

present

invention;

FIG.

7

is

a

?owchart

of

a

process

in

Which

an

Internet

application

is

a

control

area

netWork

user

interface

accord

ing

to

an

embodiment

of

the

present

invention;

FIG.

8

illustrates

a

block

diagram

of

a

control

system

in

accordance

With

the

teachings

of

the

present

invention;

FIG.

9

is

a

block

diagram

of

a

control

area

netWork

device

in

accordance

With

the

teachings

of

the

present

invention;

FIG.

10

is

a

block

diagram

of

routing

components

of

a

control

area

netWork

master;

FIG.

11

is

an

exemplary

packet

for

messages

in

accor

dance

to

teaching

the

present

invention;

FIG.

12

is

an

exemplary

message

structure

in

accordance

to

teaching

the

present

invention;

and

FIG.

13

is

an

exemplary

message

structure

in

accordance

to

teaching

the

present

invention.

DETAILED

DESCRIPTION

OF

THE

INVENTION

FIG.

1

is

a

simpli?ed

top-level

block

diagram

of

a

system

and

method

10

of

Internet

control

system

Which

couple

one

or

more

control

systems

to

the

Internet

constructed

accord

ing

to

the

teachings

of

the

present

invention.

The

implica

tions

of

employing

system

and

method

10 of

the

present

invention

are

the

ability

to

communicate

With,

control,

and

be

controlled

by

one

or

more

Internet

nodes

or

Internet

applications

that act as

one

or

more

devices

in

a

control

system

connected

by

a

control

area

netWork

(CAN).

These

Internet

applications

may

include

Web

broWsers,

Web

server

applications

of

information

content

providers,

and

email

applications.

In

other

Words,

the

geographical

and

commu

nication

protocol

boundaries

are

transparent

betWeen

a

local

control

area

netWork

and

the

Internet,

so

that

the

Internet,

Web

information

content

providers

and

Web

broWser

appli

cations

become

devices

in

the

control

system.

By

de?nition,

a

device

in

the

control

system can

send

control

commands

to

and/or

receive

control

messages

from

a

master

controller

on

the

control

area

netWork.

Hereinafter,

the

Word

Internet

may

be

also

used

to

refer

to

an

Intranet

or

the

World

Wide

Web

and

vice

versa.

System

10

includes

a

control

netWork

portal

12

coupled

betWeen

the

Internet

22

and

one

or

more

control

area

netWorks 30

and

31.

Control

area

netWorks

30

and

31

are

local

area

netWorks

operating

under

transport

protocols

such

as

Ethernet,

and

AXLink

and

PhastLink

of

Panja,

Inc.

(Dallas,

Tex.),

the

assignee

of

the

present

invention,

that

interconnect

a

variety

of

devices,

appliances

and/or

equip

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