[Deep watch exhibition] The mother of WiFi -Heidi Lama

-Chat editor-

We are in an information age. The Internet turns the world into a global village. Video conferences have eliminated physical space distances, and e -mail and information reminder that all the way to McLuhan have been fulfilled in the past 60 years ago. The identity of the person appeared in coordinated. The Beijing Automobile Museum, the Tsinghua University Science Museum, and the Western Castered Favorites jointly organized the "Che Chu Emperor -Information Technology Pioneer Handwriting Exhibition". Historical positioning, observe the mood world of scientists from background historical materials, and then deeply appreciate the immortal charm of scientific and technological humanities ...

1 introduction

Heidi Rama, born in Vienna on November 9, 1914, is an excellent scientist. The "frequency jump technology" she invented is the basis of CDMA, Wi-Fi, GPS and some military technology. He is "Mother of CDMA" and "Mother of Wi-Fi".

2 Exhibits Introduction

The moment of fixing the old yellow photos is the testimony of time. It can link the past and present. It is a trace of flowing flowing and evidence of the change of the times.

This is the signature photo of Heidi Rama signed a friend in 1938. The photo was shot by Clarence Sinclair Bull, a famous Hollywood portrait photographer and then the head of the MGM Films, and was shot. Stills of makeup. The film was released on August 5, 1938. The photo was displayed on the second floor of the Beijing Automobile Museum, "Che Chu Emperor -Information Technology Pioneer Track Exhibition".

3 Inventory stories

Heidi Rama had a strong interest in electronic products when she was five years old, and her father often introduced her to the operating principles of some equipment. Heidi Rama has excellent academic performance since childhood. Invention is her hobby. There is a workbench specializing in invention in her house. She has many wonderful thoughts. For example, she thinks that the wings of the plane should not be square. So, I bought many books about fish and birds, combining the fastest fish and bird characteristics, and put forward the idea of ​​improving the aircraft. In the end, this creative was realized by an aircraft improved expert; she also I have invented the cola tablet with the two chemists. This kind of tablets can be added to a cup of cola to add this tablet, but later it was unable to be applied because of different water quality in various regions. But Heidi Rama's wonderful thoughts did not terminate.

During the war, Heidi Rama hoped to make some contributions. In addition to being an actor in the United States, she also started research on radio in addition to being an actor. She wanted to establish a stable and confidential radio wave to accurately control the torpedo, but the difficulty was that the signals at the time were transmitted on a single channel, so the enemy was also easy to identify and interfere. Faced with this problem, she had a wonderful thought. If she wanted to be recognized by the enemy, the frequency of the radio waves must be continuously changed to "frequency jump" without interference.

But Heiti Rama didn't know how to realize this idea. Later, because of chance, she met the musician George Antaier, and the two solved the problem together. In a chat, Antaier proposed to learn the "frequency jumper" of automatic piano punching codes. This proposal has given Heidi's huge inspiration. In the next two years, in addition to making movies, Heidi Rama has worked overtime and develop frequency jump technology with Antar. The quantity was inspired, switch between 88 frequencies, and eventually the "frequency jump technology" came out. This set of devices are punching codes of the same change at the sender and receiver. It can secretly communicate at the same frequency of change. If the enemy does not know the frequency of the change, it will not be stolen, and it has strong anti -interference.

After that, the "frequency jump technology" was patented, and Heidi wanted to donate this patent to the US government for free, hoping to help the war. But when the military heard the principle of the device used for war from the piano, they thought it was ridiculous and said to Heidi that "the invention was left to an expert." The final frequency jump technology did not gain trust, and even confiscated this patent. It was not until the late 1950s that this invention of Heidi began to apply in the army and gradually spread.

In 1985, an unknown small company in the United States developed a CDMA wireless digital communication system. This company is Qualcomm and has now become one of the world's top 100 companies, and CDMA is derived from frequency jump technology. Including Bluetooth and WiFi, which are inseparable from our lives, are based on "frequency jump technology". When radio communication technology entered the public life, the scientific community remembered Heidi, calling her "Mother of CDMA" and "Mother of WiFi", but at this time she was 83 years old.

Heidi Rama died on January 19, 2000. In 2014, Heidi Rama's name was included in the history book. Her talent is finally recognized by the world.

Heidi Rama had many inventions and patents in his life, but he did not earn a penny from it.She has always believed and insisted on a sentence, "Movies are often limited to a certain area or era, but technology will not be." Writing/Ji Jiahui

Pictures from the Internet

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