Gradually lighting/dimming wireless transmission indicator lamp

• US 6,791,276 B2
• Filed: 09/23/2002
• Issued: 09/14/2004
• Est. Priority Date: 09/23/2002
• Status: Expired due to Fees

• Current Assignee: Zyxel Communications Corporation (Unizyx Holding Corporation)
• Original Assignee: Zyxel Communications Corporation (Unizyx Holding Corporation)
• Inventors: Li, Jian-Huei
• Primary Examiner(s): Philogene, Haissa
• Application Number:
  US10/251,884
• Publication Number:
  US 20040057235A1
• Time in Patent Office: 722 Days
• Field of Search: 315/291, 315/307, 315/DIG.4, 315/129, 315/130, 315/136, 340/469, 340/488, 340/512, 340/5.64, 455/123, 455/3.01, 455/403, 455/157.2
• US Class Current: 315/129
• CPC Class Codes: H04M 1/22 Illumination; Arrangements for improving the visibility of characters on dials
• CPC Class Codes: H04M 1/724 User interfaces specially adapted for cordless or mobile telephones
• CPC Class Codes: H04M 19/048 Arrangements providing optical indication of the incoming call, e.g. flasher circuits
• CPC Class Codes: H04W 88/02 Terminal devices

Abstract

Gradually lighting/dimming wireless transmission indicator lamp used in a wireless data transmission apparatus. The wireless transmission indicator lamp includes at least one light emitting diode, a wireless transceiver circuit for receiving or transmitting radio signal and converting the received radio signal into digital pulse signal and a controlling circuit having an input terminal and at least one output terminal. The input terminal is connected with the wireless transceiver circuit. The output terminal is connected with the light emitting diode. The controlling circuit is controllable by the digital pulse signal to generate a slowly varying current for the light emitting diode, whereby the light emitting diode can gradually light and dim as human breath to indicate the connection state and transmission state of the wireless data transmission apparatus.

Claims

1. A gradually lighting/dimming wireless transmission indicator lamp used in a wireless data transmission apparatus for indicating connection state and transmission state thereof, said wireless transmission indicator lamp comprising:

a wireless transceiver circuit for receiving or transmitting radio signal and converting the received radio signal into digital pulse signal;

at least one light emitting diode mounted on said wireless data transmission apparatus; and

a controlling circuit having an input terminal and at least one output terminal, said input terminal being connected with said wireless transceiver circuit, said output terminal being connected with said light emitting diode, said controlling circuit being controllable by said digital pulse signal to generate a slowly varying current for said light emitting diode, whereby said light emitting diode gradually lights and dims to indicate the indicating connection state and transmission state.

2. The gradually lighting/dimming wireless transmission indicator lamp as claimed in claim 1, wherein said wireless transceiver circuit includes an antenna for receiving or transmitting radio signal and an analog-to-digital converting circuit connected to said antenna for converting the radio signal received by said antenna from analog signal into digital pulse signal.

3. The gradually lighting/dimming wireless transmission indicator lamp as claimed in claim 1, wherein said controlling circuit includes:

a pulse buffering circuit connected to said wireless transceiver circuit, said pulse buffering circuit being composed of at least one resistor and a capacitor which form a first RC charging/discharging network for controlling frequency change of the digital pulse signal;

a current varying circuit connected to said light emitting diode, said current varying circuit being composed of at least one transistor and a second RC charging/discharging network for generating slowly varying current to control the change of brightness of said light emitting diode; and

a comparator, an output terminal of the comparator being connected to said pulse controlling circuit, an output terminal of the comparator being connected to said current varying circuit, whereby said pulse controlling circuit controls the frequency of the pulse in cooperation with negative feedback circuit of said current varying circuit so as to control the transistor to generate a slowly varying current.

4. The gradually lighting/dimming wireless transmission indicator lamp as claimed in claim 1, wherein the current varying period of said current varying circuit is about 6 second.

5. The gradually lighting/dimming wireless transmission indicator lamp as claimed in claim 1, wherein the color of said light emitting diode can be red, yellow, green, orange or white or any combination of the above colors.

6. A gradually lighting/dimming wireless transmission indicator lamp used in a wireless data transmission apparatus for indicating power state thereof, said wireless transmission indicator lamp comprising:

at least one light emitting diode; and

a controlling circuit, an output terminal of the controlling circuit being connected with said light emitting diode for generating a slowly varying current for said light emitting diode, whereby said light emitting diode gradually lights and dims to indicate the indicating connection state and transmission state.

7. The gradually lighting/dimming wireless transmission indicator lamp as claimed in claim 6, wherein said controlling circuit includes a phase reverser, two capacitors and a resistor which form a triangular wave-oscillator for outputting a triangular wave to said light emitting diode, whereby said light emitting diode can gradually light and dim to indicate the state.

8. The gradually lighting/dimming wireless transmission indicator lamp as claimed in claim 7, wherein the period of said triangular wave generated by the triangular wave-oscillator is about 6 seconds.