Radar detector having function of hands-free device

• US 7,440,779 B2
• Filed: 12/13/2005
• Issued: 10/21/2008
• Est. Priority Date: 12/14/2004
• Status: Active Grant

• Current Assignee: BG T&A Co.
• Original Assignee: BG T & A Company
• Inventors: Kim, Jung Hyun, Kim, Jeong Hun, Kim, Dong Chul, Kim, Young Jip, Kim, Jong Yeon
• Primary Examiner(s): Le; Lana N.
• Assistant Examiner(s): AKINYEMI, AJIBOLA A
• Application Number:
  US11/299,770
• Publication Number:
  US 20060139203A1
• Time in Patent Office: 1,043 Days
• Field of Search: 455/569.1
• US Class Current: 455/569.1
• CPC Class Codes: G01S 7/021 Auxiliary means for detecting or identifying radar signals or the like, e.g. radar jamming signals
• CPC Class Codes: H04B 1/3877 Arrangements for enabling portable transceivers to be used in a fixed position, e.g. cradles or boosters
• CPC Class Codes: H04M 1/6075 adapted for handsfree use in a vehicle H04M1/6058 takes precedence; arrangements for holding telephones in a vehicle B60R11/0241

Abstract

A radar detector enabling hands-free communication over a mobile phone by connecting the mobile phone to the radar detector. The radar detector includes a horn antenna; a signal-processing unit (SPU) for detecting a signal received by the horn antenna; a laser module for receiving a laser signal; a central processing unit (CPU) for controlling the SPU; a pulse delay unit for delaying or sustaining a CPU pulse; a sweep voltage generator unit for driving the SPU; a warning unit for warning the detected signal; an audio amplifier controller connected to the CPU and the warning unit to amplify an audio signal; and a connecting unit installed to connect the audio amplifier controller with a mobile phone. The connecting unit includes a microphone, a switch for reception of a signal from the mobile phone, and a connection portion for connection to the mobile phone.

Claims

1. A radar detector having the function of a hands-free device, comprising:

a horn antenna;

a signal-processing unit for detecting a signal received by the horn antenna;

a laser module for receiving a laser signal;

a central processing unit for controlling the signal-processing unit by generating a pulse to measure and calculate the period and width of the signal detected by the signal-processing unit, to analyze and output the bandwidth and information of the signal, and to find the type and information of the signal over time;

a pulse delay unit for delaying or sustaining the pulse received from the central processing unit;

a sweep voltage generator unit for driving the signal-processing unit by generating a voltage from the pulse delay unit;

a warning unit for audibly or visually warning the detected signal;

an audio amplifier controller connected to the central processing unit and the warning unit to amplify an audio signal from the warning unit and an audio signal from a mobile phone; and

a mobile phone connecting unit installed to connect the audio amplifier controller with the mobile phone and including a microphone, a switch for reception of a signal from the mobile phone, and a connection portion for connection to the mobile phone.

2. The radar detector as claimed as claim 1, wherein the signal-processing unit comprises:

a first local oscillator section integrally installed at a side of the horn antenna;

a first amplifier section for amplifying a signal obtained by mixing all signals received by the horn antenna with a first local frequency generated by the first local oscillator section within a first mixer section;

a second local oscillator section with two or three oscillators for oscillating individual frequencies;

a second amplifier section for amplifying a signal obtained by mixing the signal amplified by the first amplifier section with a second local frequency generated by the second local oscillator section within a second mixer section;

a filter section for selectively passing the signal amplified by the second amplifier section;

a demodulator section for detecting the signal that has passed through the filter section; and

an AD converter section for converting the detected signal into a digital signal.

3. The radar detector as claimed as claim 1, wherein the mobile phone connecting unit is further provided with a power connection portion that is to be connected to a cigar socket of a vehicle to receive electric power.

4. The radar detector as claimed as claim 1, wherein if a user manipulates the switch of the mobile phone connecting unit in order to use the mobile phone, the audio amplifier controller performs control such that a sound from the mobile phone can be outputted through the warning unit, and a voice of the user can be input into the mobile phone through the microphone of the mobile phone connecting unit.