Answering machine

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Who invented Answering Machines?

•  The first answering machine was invented by Mr. Willy Müller in 1935.

When was the Answering Machine invented?

•  1935

When was the patent granted on the Answering Machine?

•  Dr. Kazuo Hashimoto was granted patent on the telephone answering machine in 1968.

Who was the patent granted to on the Answering Machine?

•  Dr. Kazuo Hashimoto

What is the working principle of Answering Machine?

•  Answering machines are  used to talk back to your callers and let them know if you can't pick up the phone and they need to leave a message.  For this purpose one need to have good telephone lines.
•  Early on they were two-cassettes available in the answering phone. There was an outgoing cassette, which after a certain number of rings selected by the user played a pre-recorded message to the caller who rang the number.  After the anouncement of the pre-recorded message the  outgoing cassette stops and the incoming cassette gets activated to record the caller’s message and is set to stop once the caller hangs up.
•  In case of single-cassette answering machine the pre-recorded message is stored at the beginning of tape and caller’s message is recorded in the next remaining space.
•  However the cassette recording is fairly outdated now with the advent of digital technology. The digital answering machine has the message converted into bytes. There is an inbuilt analog to digital converter which converts the voice message into digital bytes and stores it in the RAM or random access memory.  While translating the digital message stored in RAM is retrieved and is converted to  analog signal to play the message.

What is an Answering Machine?

•  Answering machine is used to answer unattended calls and record caller’s message automatically.
•  Some additional features are added to this answering machine which makes your life easier.
•  Answering machines has some special features like giving special messages to some callers and separate messages for other members of the family.
•  Another useful important feature is remote activation which allows you to turn on the answering machine via telephone in case someone in your office forgets to activate it.
•  Generally in business you may receive phone calls after business hours. In order to avoid those missing calls answering machines will be very useful.
•  Answering machines are less expensive and many prefer to use these machines because they provide much more flexible at handling large volumes of messages or multiple users.