Detecting device for input optical power of set-top box

A technology of power detection and input light, which is applied in transmission systems, electromagnetic wave transmission systems, electromagnetic receivers, etc., and can solve the problem that optical fiber input set-top boxes cannot directly detect input signals

Active Publication Date: 2017-01-25
SICHUAN JIUZHOU ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The purpose of the present invention is to provide a set-top box input optical power detection devi...

Method used

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  • Detecting device for input optical power of set-top box
  • Detecting device for input optical power of set-top box
  • Detecting device for input optical power of set-top box

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Embodiment 1

[0025] figure 1 It is a functional block diagram of a device for detecting input optical power of a set-top box provided in Embodiment 1 of the present invention. Such as figure 1 As shown, the device includes a photoelectric conversion module 1, an amplification module 2, a comparison module 3, an LED indicator module 4 and a power supply VCC.

[0026] The power supply VCC is used to supply power to the photoelectric conversion module 1 , the amplification module 2 , the comparison module 3 and the LED indication module 4 . The amplification module 2 includes an amplification unit and a magnification adjustment unit. The comparison module 3 includes a comparison unit and a comparison range adjustment unit. The LED indicating module 4 includes an LED driving circuit and an LED adjusting circuit. The output end of the photoelectric conversion module 1 is connected to the input end of the amplification module 2 , and the photoelectric conversion module 1 converts the receive...

Embodiment 2

[0028] On the basis of the first embodiment, the second embodiment is obtained by specifically selecting the implementation circuits of the amplification module 2 , the comparison module 3 , and the LED indication module 4 . Embodiment 2 provides a set-top box input optical power detection device, the device includes a photoelectric conversion module 1, an amplification module 2, a comparison module 3, an LED indicator module 4 and a power supply VCC, and the power supply VCC is the photoelectric conversion module 1 and the amplification module 2 , The comparison module 3 supplies power.

[0029] figure 2 A schematic circuit diagram of the amplification module 2 of the set-top box input optical power detection device provided by Embodiment 2 of the present invention. Such as figure 2 As shown, the amplifying module 2 includes an amplifier U1, a resistor R1, and a resistor R2. One end of the resistor R2 is grounded, the other end of the resistor R2 and one end of the resist...

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Abstract

The invention relates to the field of set-top box technology, and provides an detecting device for input optical power of set-top box to solve the problem that the current optical fiber input set-top box cannot directly detect the input signal. The device comprises a photoelectric conversion module, an amplifying module, a comparing module, an LED indicating module and a power supply module. The device amplifies the photoelectrically converted signal through the amplifying module, compares the optical fiber input signal through the comparison module, and then drives the indicator light to be lit within the prescribed range for signaling, so that the set-top box can detects the input fiber signal directly.

Description

technical field [0001] The invention belongs to the technical field of set-top boxes, in particular to a device for detecting input optical power of a set-top box. Background technique [0002] As the bandwidth demand of network users continues to increase, the bandwidth of the traditional ADSL mode becomes the bottleneck of network applications, and the FTTH (Fiber To The Home, Fiber To The Home) mode has been widely used. [0003] FTTH has the following characteristics: [0004] 1. From the central office to the user, the middle can basically be passive. [0005] 2. It has a relatively short bandwidth, which is in line with the large-scale application methods of operators. [0006] 3. The support agreement is relatively flexible. [0007] Due to the above-mentioned advantages of FTTH, set-top boxes with optical fiber input modules are more and more widely used by users. [0008] However, when a set-top box with an optical fiber input module is used to watch a program, ...

Claims

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Application Information

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IPC IPC(8): H04B10/079H04B10/69
CPCH04B10/07955H04B10/691H04B10/693
Inventor 张卫东苟帅江露邱栋刘文
Owner SICHUAN JIUZHOU ELECTRONICS TECH
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