Motorola VL-RISC MCF5202 Bedienungsanleitung PDF herunterladen (Seite 11)

US

2006/0053436

A1

vision

receiving

device,”“television

receiver,”“television

recording

device,”“satellite

set-top-box,”“satellite

receiver,

”“cable

set-top-box,”“cable

receiver,”

and

“television

tuner”

to

refer

interchangeably

to

a

converter

device

or

electronic

equipment

that

has

the

capacity

to

acquire,

process

and

distribute

one

or

more

television

signals

transmitted

by

broadcast,

cable,

telephone

or

satellite

distributors.

“Digital

video

recorder

(DVR)”

and

“personal

video

recorder

(PVR)”

refer

interchangeably

to

devices

that

can

digitally

record

and

play

back

television

signals

and

that

may

imple

ment

trick

functions

including,

but not

limited

to,

fast

forWard,

reWind

and

pause.

As

set

forth

in

this

speci?cation

and

the

?gures

pertaining

thereto,

DVR

and

PVR

function

ality

or

devices

may

be

combined

With

a

television

con

verter.

The

signals

transmitted

by

these

broadcast,

cable,

telephone

or

satellite

distributors

may

include,

individually

or

in

any

combination,

internet,

radio,

television

or

tele

phonic

data

or

information.

One

skilled

in

the

art

Will

recogniZe

that

a

television

converter

device

may

be

imple

mented

as

an

external

self-enclosed

unit,

a plurality

of

external

self-enclosed

units

or

as

an

internal

unit

housed

Within

a

television.

One

skilled

in

the

art

Will

recogniZe

that

the

present

invention

can

apply

to

analog

and

digital

satellite

set-top-boxes.

[0019]

As

yet

another

general

matter,

it

Will

be

understood

by

one

skilled

in

the

art

that

the

term

“television”

refers

to

a

television

set

or

video

display

that

may

contain

an

inte

grated

television

converter

device

(e.g.,

an

internal

cable

ready

television

tuner

housed

inside

a

television)

or,

alter

natively,

that

is

connected

to

an

external

television

converter

device

(e.g.,

an

external

set-top-box

connected

via

cabling

to

a

television).

A

further

example

of

an

external

television

converter

device

is

the

EchoStar

Dish

PVR

721,

Part

Num

ber

106525,

combination

satellite

set-top-box

and

PVR.

For

the

remainder

of

this

disclosure,

speci?c

embodiments

Will

be

described

using

a

television

converter

device

that

imple

ments

satellite

technology.

[0020]

Finally,

as

a

general

matter,

it

should

be

understood

that

satellite

television

signals

may

be

very

different

from

broadcast

television

or other

types

of

signals.

Satellite

signals

may

include

multiplexed,

packetiZed,

and

modulated

digital

signals.

Once

multiplexed,

packetiZed

and

modu

lated,

one

analog

satellite

transmission

may

carry

digital

data representing

several

television

stations

or

service

pro

viders.

Some

examples

of

service

providers

include

HBOTM,

CSPANTM,

ABCTM,

CBSTM,

or

ESPNTM.

In

satellite

televi

sion,

a

service

provider

can

also

be

compared

to

a

“channel.”

[0021]

The

term

“channel,”

as

used

in

this

description,

carries a

different

meaning

from

its

normal

connotation.

In

broadcast

television,

different

analog

signals

of

a

television

station

may

be

carried

on

a

carrier

frequency

and

its

sub

channels.

A

tuner

in a

television

may

then

acquire

and

process

these

signals.

In

broadcast

television,

the

term

channel

has

thus

become

synonymous

With

the

sub-channel

or

the

station

on

that

sub-channel.

The

normal

connotation

of

the

term

“channel”

is

therefore

not

alWays

appropriate

to

describe

satellite

television

transmissions

Where

multiple

stations

may

be

multiplexed

onto

a

single

carrier

frequency.

Satellite

television

distributors,

hoWever,

may

organiZe

the

satellite

data

into

a

group

of

different

“virtual

channels.”

These

virtual

channels

give

the

impression

that

the

satellite

television

programs

are

placed

in

normal

channels

that

are

organiZed

by

service

provider.

This

impression

may

assist

Mar.

9,

2006

user

operation

of

the

satellite

set-top-box

since

it

models

an

analog

television

or

analog

receiving

device.

The

virtual

channels

may

appear

in

the

electronic

program

guide

(EPG)

data

and

the

user

may

choose

programming

by

selecting

a

virtual

channel.

For

instance,

the

user

can

select

HBO,

Which

may

be

on

virtual

channel

300,

or

CSPAN,

Which

may

be

on

virtual

channel

210.

These

service

providers

or

virtual

channels

are

not

necessarily

carried

in

the

same

signal

being

sent

from

the

same

satellite.

EPG

data

may

come

from

a

service

provider

(e.g.,

HBO),

content

provider

(e.g.,

Dis

ney),

a

third

party

(e.g.,

TV

Guide)

or

from

another

outside

entity.

[0022]

Thus,

in

satellite

television

service

a

channel

may

not

be

the

same

as

in

broadcast

television

service.

Rather,

channels

may

be

more

properly

termed

service

providers

in

satellite

television

service.

The

term

“channel”

Will

be used

in

this

description

to

describe

the

service

providers

and

the

virtual

channels

they

may

occupy.

[0023]

FIG.

1

presents

an

embodiment

of

a

home

enter

tainment

system

102

that

includes

a

television

converter

device

100

in

the

form

of

a

satellite

set-top-box.

Generally,

the

satellite

set-top-box

100

may

receive

one

or

more

television

signals

from

a

cable

television

distributor

(not

shoWn),

from

a

broadcast

television

distributor

(not

shoWn)

or

from

a

satellite

television

distributor

104.

As

a

preferred

embodiment,

home

entertainment

system

102

receives

sig

nals

from

satellite

television

distributor

104.

One

skilled in

the

art

Will

recogniZe

that

set-top-box

100

may

also

receive

video-digital

subscriber

line

(DSL),

DSL,

Internet,

Wireless

and

other

signals

from

content

or

video

distributors.

The

satellite

set-top-box

100

may

process

television

signals

and

may

send

the

processed

signals

to

peripheral

electronic

devices,

such

as

a

monitor

or

television

120.

The

satellite

set-top-box

100

also

may

accept

commands

from

a

remote

control

126

or

other peripheral

electronic

devices.

More

detail

about

the

functionality

of

the

satellite

set-top-box

100

is

provided

beloW.

[0024]

To

further

describe

the

home

entertainment

system,

embodiments

relating

to

receiving

satellite

television

signals

Will

be

explained

in

more

detail.

A

satellite

television

distributor

104

may

transmit

one

or

more

satellite

television

signals

128

to

one

or

more

satellites

106.

Satellite

television

distributors

may

utiliZe

several

satellites

106

to

relay

the

satellite

television

signals

to

a

subscriber.

Each

satellite

106

may

have

several

transpondcrs.

Transpondcrs

transmit

the

signal

130

from

the

satellite

to

the

subscriber.

For

example,

these

signals

130

may

be

transmitted

at

a

frequency

of

2150

MhZ.

[0025]

A

transponder

may

also

polariZe

the

transmitted

signal

130

in

several

Ways.

One

form

of

polariZation

in

satellite

transmissions

is

circular

polariZation.

For

example,

transponders

of

satellite

106

may

transmit

tWo

signals

(together

as

signal

130)

on

the

same

transponder,

one

signal

that

is

right-hand

polariZed

and

another

signal

that

is left

hand

polariZed.

In other

Words,

tWo

signals

may

be

simul

taneously

transmitted

With

opposite

polariZations.

The

oppo

site

polariZations

may

prevent

interference.

One

skilled

in

the

art

Will

recogniZe

that

other

Ways

of

polariZing

signals

are

possible.

[0026]

The

polariZed

signals

can be

received

at

satellite

communication

device

108.

The

satellite

communication

device

108

may

include

one

or

more

of

the

components

that

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