Uniden Corporation

Mikio Iwakuni

Yoshihiko Baba

Masahiro Takiguchi

Masato Suzuki

Jun Yoshida

Masaru Akiyama

Shuichi Katsukura

Toshiaki Yuasa

Isao Ohki

Shuji Konishi

Tadashi Kogure

Katsuya Kaneda

Kenji Sekine

Toshihiro Takahashi

Teruhide Kunimitsu

Katsuhiro Miyamoto

Norio Abe

The object of the present invention is to provide a cellular phone to be used for emergency reports that performs GPS positioning by means of remote control from an emergency report center, and transmits positional information to the emergency report center. The emergency report cellular phone according to the present invention is constituted such that when an emergency report switch thereof is depressed, a call request is made to the emergency report center. The emergency report center transmits a response signal with the result that a call link is formed between the emergency report cellular phone and the emergency report center. Following completion of the telephone call, the emergency report center transmits a position recalculation command message, by means of a DTMF signal. The emergency report cellular phone, which has received this command message, performs GPS positioning and then converts latitudinal and longitudinal information to a DTMF signal before transmitting same to the emergency report center. As a result, even in a case where, in a time of emergency, a reporting party is unable to perform GPS positioning manually as a result of a poor physical condition, for example, since GPS positioning is possible by means of remote control, it is possible to rescue the reporting party in a rapid and reliable manner.

Emergency report cellular phone, cellular connection switching method and GPS positioning method

A radar detector is comprised of a voltage controlling oscillator (VCO) instead of DROs, thereby decreasing the cost of radar detector. The radar detector comprises a voltage controlled 1st local oscillator generates a signal of a frequency of 11.2796 GHz to 11.9832 Ghz, two (2) 2nd local oscillators generate signals with frequencies of 0.603 GHz and 1.3668 GHz, a memory section which stores pair combination data indicating the relation between the frequency of said voltage controlled oscillator, the frequencies of said local oscillators and the frequency of the received radar signal in advance; and a controlling section which decides the frequency of a radar signal by comparing the obtained information with said pair combination data.

Radar detector

Disclosed is a radar detector for frequency sweeping a wide band range by using a VCO circuit to detect a radar signal, wherein the frequency precision of the received band can be improved by using comparatively simple and inexpensive circuits. This radar detector comprises an antenna for receiving radar signals, a voltage controlled oscillator which receives a controlled signal and generates a signal of a frequency corresponding thereto, a receiving section which demodulates the radar signal received by said antenna based on the output signal of said voltage controlled oscillator, a sweep signal generating section which generates and supplies a sweep signal to said voltage controlled oscillator as said controlled signal, a memory section which stores data indicating the relation between said sweep signal and oscillating frequency in advance, and a controlling section which, after detecting a radar signal demodulated by said receiving section, decides the received frequency of said radar signal by comparing the controlled signal of said voltage controlled oscillator with the data in said memory section. The memory section stores the actual characteristics of the voltage controlled oscillator, so that a correct distinction is possible.

Radar detector and the adjustment system and method thereof

A speed detecting apparatus mounted on an object moving on the ground detects a Doppler frequency for computing a moving speed thereof by receiving reflection waves of a microwave signal or a millimeter wave transmitted to the ground. The apparatus comprises a plurality of transmitting/receiving systems each having an antenna and a transmitter/receiver, and a signal processing section for computing moving speed according to Doppler frequency detected by the transmitting/receiving systems. Directivity of an antenna provided in each of the plurality of transmitting/receiving systems is set at a different angle respectively.

Speed detecting apparatus

For accurately detecting a desired laser signal without being affected by ambient noise light pulse, a laser signal receiving apparatus, which receives a light pulse transmitted from a laser transmitter, includes a light receiving section having a photo-electric converter for converting a light pulse into an electric pulse signal, a pulse-width detecting section for detecting a pulse-width of the pulse signal derived from the light receiving section and a controlling section having a counter port supplied with the pulse signal and a pulse-width detector port supplied with an output of the pulse-width detecting section, so as to count only the pulse signal having a predetermined pulse-width, based on an output of the pulse-width detecting section.

Laser light receiving device with improved noise discrimination

For receiving radar waves entering an antenna horn by the heterodyne method, the system is designed so that one of the local oscillation signals produced respectively by a local oscillator for the X- and K-band radar waves, a local oscillator for the Ka-band radar wave, and a local oscillator for leaked local oscillation waves can be selected to be used as the first local oscillation signal for beating down the radar waves at a first mixer. When a radar wave has been detected in the Ka-band receiving mode with the local oscillator for the Ka-band being selected, a signal processing circuit sets the heterodyne receiving system to the leaked local oscillation wave receiving mode, selecting the local oscillator for the leaked local oscillation waves as the first local oscillator. If a radar wave is detected in this mode, the signal processing circuit inhibits a warning apparatus from issuing the regular warning.

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Yachiyo, Japan

Mikio Iwakuni