Marantz 5220 Manuel d'utilisateur télécharger pdf (Page 29)

HIGHLIGHTS

Digital

Watch /Calculator

Time Computer,

Inc. has come

out

with a combination

Pulsar

quartz

timepiece (hours,

minutes,

seconds,

month, and

date)

and

microminiature

IC

cal-

culator.

The calculator

is capable

of

providing

answers

totaling

up to

12 figures,

displaying

the first

six significant

digits.

It

has a complete

calculator

keyboard

that

enables

the

wearer

to

add, subtract,

divide,

or

multiply.

It also

has a

built

-in

memory,

float-

ing decimal

point,

and

percentage

key.

The

unit can

be

switched

from calculator

to timepiece

at the

touch of a single

key.

The miniature

calculator

is oper-

ated by touching

the keys

with

the retractable

plastic

tip

of a

12 -kt gold

-filled pocket

pen

packaged

with the

unit.

The unit

is powered

by

four energy

cells,

which the

company

estimates

will provide power

for as

many as

25

calculations

and

25 time checks

a

day for one

year.

Initial

production,

limited

to a hundred

18 -kt

gold

models,

car-

ried a price

tag of $3,950.

Future

models,

in less

elabo-

rate cases,

are planned

to sell

for considerably

less.

Teac

To Use dbx

NR

Teac has signed

a license

agreement

which will permit

it

to incorporate

dbx

noise reduction

in its

machines

in all

three

tape formats.

The

system will

be the

same

2:1

double -ended

compression/expansion

system

presently

being

marketed

by dbx

as an outboard

accessory

and

will

be compatible

with dbx

noise -reduction

systems

now

in

use.

Back -Up

Warning

Device

A Japanese

firm

has developed

a vehicular

warning

device -R-

Phone -which

talks. Consisting

of

an

IC,

waterproof

housing,

and

a plastic

speaker,

the

unit

is

about

the size of

an automobile

horn.

It is designed

to

be

mounted

to the rear

under -section

of

any

vehicle (motor

home, camper,

van, auto,

truck) and

hooked

up

to the

back -up

light circuit.

When the gearshift

lever

is

put

into

"reverse,"

an endless

tape

repeats

the

warning, "Watch

out,

this car

is backing

up."

The device

is

being imported

by Klir,

Inc. of

Santa

Ana, California

and

will be offered

through chain

-store outlets

and auto

accessory

stores.

"Instant -On"

TV

Beginning

January 1, 1977,

"instant

-on" television

re-

ceivers

will be banned

in New York State

under a bill

Gov. Carey

recently signed

into law.

Designed as an

energy -conservation

measure, the law applies

to units

manufactured

on or after that

date.

Fire

Detection

Systems

A

recent

market study

by

Frost &

Sullivan

predicts

that

annual

sales of residential

alarm

devices

will grow

from

$68

million

in 1974

to $302

million

by 1985.

Smoke

detectors

will be the

fastest

growing

product

line,

from

$12.6

million

in 1974

to $107

million

by 1985.

Other

trends include

the

combination

of

fire and

burglar

alarm

devices

into a single

system,

the advent

of

wireless

sys-

tems and

the growing

use of

solid -state

components.

Government

is stimulating

this

trend.

More and

more

states

are

requiring

early

-warning

fire detection

devices

in

new homes.

Federal

safety

standards

will

soon

make

smoke

detectors

mandatory

in all

new

mobile

homes.

Also,

homes

underwritten

by

FHA -sponsored

loans

must

now be

protected

by

smoke

detectors.

In a related

area,

the Protectowire

Company

(Han-

over,

Mass.)

has

developed

a

line -type

detector

that

is

actuated

by both

radiant

and

convected

heat.

The

sensor

consists

of

two energized

wires encased

in a

heat

-

sensitive

material.

The

application

of

heat anywhere

along

the line causes

the material

to yield,

and

the

wires

make contact.

The resultant

current

change

energizes

or releases

one

or more

relays

which in

turn

actuate

warning

devices.

Various

sensitivities

are

available:

155 °,

190 °,

and 280°

F (65.2

°, 87.5 °,

and

137.6°

C).

Wireless

TV

Remote Control

A Canadian

company,

the

Keeble

Selectra

Corp.

Ltd..

has developed

a wireless

remote control

tuning system

which can

tune up

to 32

vhf channels

(including

special

"cable" channels).

The channel

control

emits

an ul-

trasonic signal

(which

Keeble

claims

won't

bother your

pet), and

is roughly

the size

and

weight of

a pocket

calculator.

It can

switch

a television

receiver

on

or off

and

change channels

from a

distance of

20 feet

(6 m) and

from

45° angles.

The

receiver

unit, called

a translator,

which

sits atop

the television,

directs

the

chosen

signal

from

its own tuner

to the

television's

antenna

terminals.

The translator

contains

three

elements:

a mixer,

a tuner,

and a pc

board

carrying

digital

logic

and a

voltage selec-

tor to

route

the signal

to the

television.

The

hand

held

"channel

control"

transmitter

is battery

operated.

Computerized

Speech

Synthesis

Scientists

at the

Naval Research

Laboratory

have de-

veloped a computer

program

that

translates

English text

into synthetic

speech.

The program

applies

a limited

set

of letter -to -sound

rules

to

individual

words, and

"sounds"

them

out the

way a child

does. Thus,

it does

not

require a separate,

dedicated

computer

system,

separate

storage

for a large data

base, or computer

time to

break

up and attempt

to understand

sentences.

In an

average

sample

of English

text, the

system pronounces

correctly

about 95% of

the words,

and

most errors

are obvious

enough

to be detected

by the

human operator.

In the

current

system,

a commercial

speech

synthesizer

is

used.

MARCH

1976

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