Archive
Communications
Deaf Hear Through Head Bone (Mar, 1933)

Deaf Hear Through Head Bone

AN INVENTION for hearing by the conduction of sound through the bony structure of the head instead of through the outer ear was successfully demonstrated recently before the engineering society in New York.

How the contraption is worn is illustrated in the photo below. The heart of the instrument is a special transmitter worn on the clothing which intercepts the words spoken to the deaf or partially deaf person. This transmitter is connected to the oscillator which presses against the bony part of the cranium when the listening is to be done. Ordinarily, however, the oscillator is worn like a necklace around the throat as illustrated in the photo below.

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Pictures by Radio (Jun, 1939)

The printout actually looks really good, though at 3 feet per hour it isn’t the most useful thing in the world.

Pictures by Radio

RADIO facsimile, the process by which pictures and printed matter are transmitted over the air for identical reproduction at the receiving end, is rapidly advancing as a new and valuable service of radio broadcasting. An experimental facsimile network has been established as part of the Mutual Broadcasting System, and already three important stations, WGN, WOR and WLW, are transmitting on regular schedule. Factory-made receivers of medium price are being produced by a large radio set manufacturer and are now advertised and sold by department stores.

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Desk-Size Facsimile Machine (Jun, 1952)

Desk-Size Facsimile Machine

Smaller than a typewriter, a miniature self-contained telegraph “office” provides the executive with 24-hour telegram service. Telegrams are sent and received simply by pushing a button. They don’t even have to be typewritten. You simply write out the message on a blank, wrap the blank around the drum of the machine and turn it on. A scanner views the message and sends it to the addressee where an exact copy is reproduced by an identical machine. Transmission time of about 2-1/2 minutes is required to handle a full message. The call is routed through the main office of Western Union, which directs the message to its destination and bills the sender.

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Old And New Communication Methods Combined (Oct, 1939) (Oct, 1939)

Old And New Communication Methods Combined

Old and new methods of communication were combined recently when a Cincinnati radio station used carrier pigeons to speed pictures of a baseball game between Cincinnati Rends and Pittsburgh Pirates to its studio for immediate transmission.

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Amazing New Picturephone (Jun, 1968)

This is the earliest reference I’ve seen to a CCD in a consumer product.

Amazing New Picturephone
A step closer to in-person

By W. Stevenson Bacon

There’s a brand-new Picturephone in the works that will one day give you instant total communication with anyone you call. What makes it fascinating is the amazing versatility of the delicately engineered unit that holds both picture and camera tubes.

Unlike the old Picturephone, this one gives you a choice of wide-angle picture, long-range shot, or electronic close-up. Pull a lens out and aim it downward, and you can send pictures, drawings, or printed documents. If you wish, you can push a button to see what you’re sending. And if a call catches you in the shower you can simply switch over to three-bar test pattern.

Bell Telephone Laboratories packed all this into an 8-by-11-by-14-inch box by using tiny integrated circuits that incorporate hundreds of transistors and other components on small chips of silicon. In fact, the only vacuum tubes used are the picture and camera tubes. And even the camera tube makes use of semiconductors.

The camera tube is a revolutionary new type that uses a target (the part of the tube that converts incoming light to electrical charges) made of silicon and containing 300,000 light-sensitive diodes formed on it by integrated circuit techniques. It’s the first time that semiconductors and vacuum tubes have been combined to make one device.

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Dictating Machines to Use Magnetic Tape (Oct, 1934)

Dictating Machines to Use Magnetic Tape

With the development of the steel tape method of sound recording, present day dictaphones may soon become obsolete. In demonstrations at the Century of Progress sound was stored in the magnetic ribbon for only a few seconds, but engineers believe it possible to construct a simplified dictating machine set along similar lines.

With the use of large rolls of the steel tape, there would be no need to change records as frequently as in the present apparatus. Court proceedings could be stored indefinitely.

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Dial Switches Message Tubes (Dec, 1951)

This is a hardware packet switched network, kinda like IP circa 1951.

Dial Switches Message Tubes
By Dialing a number, workers in a Connecticut factory can send written messages and even metal samples to various parts of the plant in about a minute’s time. They are using the familiar old pneumatic tube, the hissing clanging gadget used to make change in many department stores.

This pneumatic tube is different. Wehere older systems required separate tubes to each station, this one has an automatic dial exchange, just like a modern telephone central office, making a few tubes do the work of many. Each carrier has numbers that can be set to guide it automatically to any one of the nine stations that make up the first American installation at the Housatonic plant of the Bridgeport Brass Co. Eventually there will be 20 stations.

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Living Shadow Dances on Giant Electric Sign (Mar, 1941)

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Living Shadow Dances on Giant Electric Sign

PIROUETTING in front of a bank of photo-electric cells, Dixie Dunbar, New York dancer, recently cast a living silhouette on the world’s largest animated electric sign above the Great White Way. Her shadow, thrown on the electric eyes, blacked out lights in corresponding areas of the sign. In regular operation, animated-cartoon silhouettes are projected on the cells from a movie film.

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Giant Videophone (Jul, 1964)

Low-cost viewer lets you see who’s calling

This phone-viewing system gives you a picture of any caller similarly equipped. It can be used on ordinary telephone lines. Push a button and within five seconds the picture appears. Developed by Toshiba Co., Japan, price is estimated at $250 although it’s not yet ready for sale.

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