close

Вход

Забыли?

вход по аккаунту

?

JPS49146902

код для вставкиСкачать
Patent Translate
Powered by EPO and Google
Notice
This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
financial decisions, should not be based on machine-translation output.
DESCRIPTION JPS49146902
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a system diagram of one embodiment of the
present invention, and FIG. 2 is a system diagram of another embodiment. 1 · · · · · · · · · · · · · · · · · · ·
· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · CD · · ·. 4
day modulator, 5 ..... matrix decoder. 1 1 2 1
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a two-way
automatic switching apparatus used for a receiving apparatus when a 4-channel stereo program
+ 11 ram is transmitted by a two-channel transmission system. There are CD-4 system and MA) II
Lux system as a reproduction system in case that 4 channel signals are sent by 2 channel
transmission system, in this case, both systems are reproduced by the apparatus of any one
system. It is impossible, and when reproducing a signal of a different system, there was an
annoyance of switching of the reproducing apparatus each time and wiring being necessary. The
present invention aims to provide a device for automatically switching the Klfj system without
requiring such artificial switching or distribution * f: at all. An embodiment of the present
invention will be described with reference to FIG. 1. The input terminal of the 1t12 channel
system is commonly connected to the input terminal of the switching device 20 and the input
terminal of the carrier signal sensing device 3. Although not shown, a signal source such as a
pickup is connected to the input terminal IK. The switching device 2 is composed of
semiconductor switching elements or other static (2) or mechanical devices such as relays, and
the switching circuit operates only when receiving the output signal of the carrier signal sensing
device 3. When the input signal applied to the input terminal 1 is connected to the input terminal
of the CD-4 tee T-shusser 4, and the output signal from the carrier signal sensing device 3 is not
received, the input terminal of the Mad I + Tutus decoder 5 It is supposed to add a human power
signal to 6 is an output terminal of 4 channels, and 4 output codes of both CD-4 demodulator 4
and matrix decoder 5 are connected in common. An amplifier or the like is connected to the
output terminal 6. The carrier signal sensing device 3 selectively amplifies only the 30 kilohertz
09-05-2019
1
signal so that when the 30 kilohertz signal is applied to the input terminal, an appropriate output
signal is generated to activate the switching device 2 It has become. Note that since scratch noise
and other noise may include a signal of 30 kHz (3), the carrier signal sensing device 3 has a delay
time (time constant) of about several milliseconds. Is desirable. Also, although the input terminal
of the carrier wave signal sensing device 3 described above and the input terminal l of the two
channel system are connected by two cords in the figure, they are connected by taking a signal to
the ground 1 It may be done by the code of the book. When a 4-channel signal of either system is
applied to the input terminal 1 of this device configured in this way, a carrier signal of 30 kHz for
the acoustic signal is 1C # 'i if the 1d is C1) -4 system. The carrier signal sensing device 3
outputs an output signal according to this signal, and this signal causes the switching device [2 to
be switched to the CD-4 demodulator -4 side to perform CLI-4 cancellation / control 4- Is
activated.
If the signal applied to the input terminal IK is in the matrix mode, the carrier signal sensing
device 3 is not activated and thus the matrix decoder 5 is activated. (4) In the above embodiment,
the switching device 2 is provided immediately after the input terminal l, but as shown in FIG. It
is also possible to connect the input side of the Luxcoder-5 in common to the input quadruple 1
and to provide the switching device 2 on their output side. Since this device is configured as
described above, it has an effect that signals of 4 channels applied to the input terminal 1 can be
switched and selected automatically regardless of which system.
09-05-2019
2
Документ
Категория
Без категории
Просмотров
0
Размер файла
9 Кб
Теги
jps49146902
1/--страниц
Пожаловаться на содержимое документа