CN109361368A - A kind of filter and its control method of the integrated comparator with reset function - Google Patents

Abstract

The present invention relates to filter construction technical fields, the filter and its control method of specially a kind of integrated comparator with reset function, it can have in arms to work and power on entire integrated chip every time and all work normally, it includes integration packaging in the filter module in an integrated chip, comparator module, clamp circuit, bias circuit, it is characterized in that, reseting module is additionally provided in integrated chip, bias circuit electricly connects comparator and filter module by reseting module, the vision signal output pin electricly connected with clamp circuit is provided in integrated chip, the vision signal output pin electricly connected with filter module output end, the reference voltage input pin and control signal input tube foot electricly connected with comparator module input terminal, the control signal output pin electricly connected with comparator module input terminal, The reseting pin electricly connected with reseting module.

Description

A kind of filter and its control method of the integrated comparator with reset function

Technical field

The present invention relates to filter construction technical field, the filter of specially a kind of integrated comparator with reset function And its control method.

Background technique

Now with the development of automobile, more and more, the vehicle-mounted reverse image of the demand and type of vehicle-mounted electronic system Also more and more with automobile data recorder demand, automobile each so just needs multiple audio-video systems.But automobile needs to open daily Dynamic and closing many times, leads to the multiple on and off of audio-video system.In safety-security area, monitoring camera is also in this way, also can Occur often opening and closing phenomenon.The frequent unlatching of this power supply, so that connecting filter and master chip with video monitoring Meeting generation timing sequence mistake is powered on, causes chip operation abnormal, as shown in Figure 1 the filter of traditional integrated comparator, only Only comparator and filter.When powering on, filter can export some clutters, but comparator can be these clutter solutions Out, while controller is transmitted to.Will lead to controller in this way can obtain the instruction of mistake, influence to work normally.

Summary of the invention

In order to solve the problems, such as that existing filter causes integrated chip run-time error, this hair occur because of the frequent unlatching of power supply It is bright to provide a kind of filter of integrated comparator with reset function, it can have in arms to work and power on entire integrated chip every time All work normally, meanwhile, the present invention also provides corresponding control methods.

Its technical solution is such that a kind of filter of integrated comparator with reset function comprising integration packaging In filter module, comparator module, clamp circuit, bias circuit in an integrated chip, which is characterized in that described integrated Reseting module is additionally provided in chip, the bias circuit electricly connects the comparator and the filter by the reseting module Wave device module, be provided in the integrated chip vision signal output pin electricly connected with the clamp circuit, with it is described The vision signal output pin that filter module output end electricly connects and the ginseng that the comparator module input terminal electricly connects It examines voltage input pin and controls signal input tube foot, exported with the control signal that the comparator module input terminal electricly connects Pin, the reseting pin electricly connected with the reseting module.

A kind of control method of the filter of the integrated comparator with reset function, which is characterized in that it includes following step It is rapid:

(1) after power supply is powered, reseting module first starts power up work, exports a RESET after reseting module normal work Signal makes comparator module and filter module start power up work to comparator module and filter module；

(2) it is powered on after completion works normally in comparator module and exports a READY_COM signal to reseting module, filtered simultaneously Device module powers on after completion works normally and exports a READY_LPF signal to reseting module；

(3) reseting module judges that entire integrated chip has all powered on completion and started to work normally after receiving above-mentioned two signal, multiple Position module exports a RESET non-signal to master controller, and master controller is made normally to start power up work.

After filter of the invention and corresponding control method, comparator mould when chip does not power on complete Block and filter module be it is idle, only power on completely after, reseting module outputs signal to comparator module and filter Module, while the signal that exports of reseting module is to master controller makes master controller and comparator module, filter module while multiple Position is started to work, and is not in phenomena such as transmitting error signal is to master controller, be ensure that entire chip works normally.

Detailed description of the invention

Fig. 1 is existing integrated chip schematic diagram；

Fig. 2 is integrated chip schematic diagram of the present invention.

Specific embodiment

As shown in Figure 2, a kind of filter of the integrated comparator with reset function comprising integration packaging is integrated in one Filter module, comparator module, clamp circuit, bias circuit, reseting module in chip, bias circuit pass through reseting module Comparator and filter module are electricly connected, the vision signal efferent duct electricly connected with clamp circuit is provided in integrated chip Foot IN, the vision signal output pin OUT electricly connected with filter module output end and the automatically controlled company of comparator module input terminal The control that the reference voltage input pin VREF and control signal input tube foot VIN and comparator module input terminal connect is electricly connected The reseting pin that signal output pin COMP_OUT and reseting module processed are electricly connected.

A kind of control method of the filter of the integrated comparator with reset function comprising following steps:

(1) after power supply is powered, reseting module first starts power up work, exports a RESET after reseting module normal work Signal makes comparator module and filter module start power up work to comparator module and filter module；

(2) it is powered on after completion works normally in comparator module and exports a READY_COM signal to reseting module, filtered simultaneously Device module powers on after completion works normally and exports a READY_LPF signal to reseting module；

(3) reseting module judges that entire integrated chip has all powered on completion and started to work normally after receiving above-mentioned two signal, multiple Position module exports a RESET non-signal to master controller, i.e., gives master controller by controlling signal input tube human hair combing waste, make to lead Controller normally starts power up work.

The configuration of the present invention is simple, application effect is obvious, and inside is not in real timing error, can guarantee to have powered on every time It can be that master controller, comparator module, filter module can normally start after.

Claims (2)

1. a kind of filter of the integrated comparator with reset function comprising integration packaging is in the filtering in an integrated chip Device module, comparator module, clamp circuit, bias circuit, which is characterized in that reset mould is additionally provided in the integrated chip Block, the bias circuit electricly connect the comparator and the filter module, the integrated core by the reseting module On piece is provided with the vision signal output pin electricly connected with the clamp circuit, automatically controlled with the filter module output end The vision signal output pin of connection, the reference voltage input pin electricly connected with the comparator module input terminal and control Signal input tube foot, the control signal output pin electricly connected with the comparator module input terminal and the reseting module The reseting pin electricly connected.

2. a kind of control method of the filter of the integrated comparator with reset function, which is characterized in that itself the following steps are included:

(1) after power supply is powered, reseting module first starts power up work, exports a RESET after reseting module normal work Signal makes comparator module and filter module start power up work to comparator module and filter module；

(2) it is powered on after completion works normally in comparator module and exports a READY_COM signal to reseting module, filtered simultaneously Device module powers on after completion works normally and exports a READY_LPF signal to reseting module；

(3) reseting module judges that entire integrated chip has all powered on completion and started to work normally after receiving above-mentioned two signal, multiple Position module exports a RESET non-signal to master controller, and master controller is made normally to start power up work.