CN2251185Y

CN2251185Y - Split-type digital phonetic recording management apparatus

Info

Publication number: CN2251185Y
Application number: CN 96212038
Authority: CN
Inventors: 张奇峰
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-05-28
Filing date: 1996-05-28
Publication date: 1997-04-02
Anticipated expiration: 2006-05-28

Abstract

The utility model relates to a split-type digital phonetic recording management apparatus, which is composed of a phonetic signal recorder and a phonetic signal manager two parts. The utility model is characterized in that the recorder and the manager are two separated parts both with an interface in between connected by a cable. The recorder comprises an input mode converting circuit with single end input or double end mixed input. A dynamic memory unit of the apparatus comprises driving circuits u 8 and u 9. A part of address line of a system processor is connected with a memory U12 through the driving circuits. The apparatus has the advantages of safe and reliable record, flexible use, large memory capacity, etc.

Description

Split type digital speech record management server

The utility model relates to a kind of digital speech pen recorder.

Present digital recording sound equipment mostly is integral type, and one of its shortcoming is that the voice record time ratio is shorter, seldom has to surpass 1 hour, uses the device of digital signal processor to link to each other with PC, or is used with single-chip microcomputer; Two of shortcoming is that the security of voice record is difficult to guarantee; Three of shortcoming is that input pattern signal is single, and adaptive surface is narrow.

The purpose of this utility model is to provide a kind of memory space big, multiple functional split type digital speech record management server.

The utility model is made up of voice signal register and two parts of voice signal manager; The voice signal register comprises: analog channel part, conversion of signals part and signal processing; Analog channel comprises: the impedance conversion of input audio signal, low noise amplify, automatic gain is controlled, import conversion and control and output signal impact damper; The signal conversion part branch comprises: analog-digital converter and digital analog converter (A/D, D/A) and coding decoder (CODEC); Signal processing comprises: digital signal processor DSP, central processing unit CPU, memory MENORY and control interface; The voice signal manager comprises: keyboard, liquid crystal display, information are transcribed part and voice output part; It is characterized in that: register is the two parts that separate with manager, and an interface is all arranged between them, is interconnected by cable; Recorder interface P ₁Comprise: the P of 32AM163 processor _AThe mouth link; The P of QL8 * 12B interface chip _BConnecting resistance R on the mouth ₃₂, R ₃₃, R ₃₄, R ₃₅With diode D ₅, D ₆, D ₇, D ₈As PX0-3 end, external power supply V _CC, VP2.5V, SIG and power supply ground GND end; Manager interface P ₁' and recorder interface P ₁Corresponding, P ₁' signal end and liquid crystal LCD, the keyboard JP of interface ₁And the playback unit is connected; This device also comprises the input pattern change-over circuit, and this circuit has single-ended input end JIN ₁, both-end mixing input end MIX ₁And MIX ₂, the isolation of single-ended input and two kinds of working methods of both-end input is by electronic switch U _16CFinish; U _16CThe B pin be JIN ₁End, A pin are the MIX end, and the C pin is control end PC ₁Described JIN ₁Pass through C ₁₃, R ₃₁Be connected to amplifier U _1AThe ZI pin, U _1AThe O2 pin to be output terminal meet output buffering U through C9 _2AMIX ₁, MIX ₂Respectively through U _2BAfter the mixing, receive U _16CThe A pin; When mixing input, U _16CConducting, U _16CThe B pin be JIN ₁End; The dynamic storage cell of this device also comprises: driving circuit U ₈, U ₉, a part of address line A of system processor NS32AM163 _1-12With DRAM pilot brush new signal CAS, RAS, driving circuit U ₈, U ₉Corresponding input end, U ₈, U ₉Output SA _1-12Again with U ₁₂The corresponding address line end be connected.

The utlity model has following effect:

1. register separates with manager, connect by interface, cable, make and just can not listen to, revise recorded content at the short of manager of the occasion of service recorder device, thereby guaranteed the true and accurate of register voice content and corresponding time tag, also improve the security and the reliability of register work, significantly reduced failure rate;

2. overcome the problem that only allows a kind of input pattern signal of conventional apparatus, increased the mode switching circuit of input end, the system that makes can accept single-ended input signal and both-end balanced input signal, also can finish the overlaying function of double-end signal simultaneously, expand the range of application of system, increased the use dirigibility;

3. system just can not steady operation when memory capacity is increased to 16Mbit to have overcome conventional apparatus, and during to 32Mbit, system adopts part address wire A with regard to complete inoperable problem _1-12After adding driving with DRAM pilot brush new signal CAS, RAS, give DRAM again, system drive reaches the 64Mbit storer still can reliably working.

The drawing explanation:

Fig. 1 is a circuitry theory diagram of the present utility model.

Fig. 2 is the interface circuit of register of the present utility model, manager.

Fig. 3 is input pattern change-over circuit figure of the present utility model

Fig. 4 is the circuit diagram of dynamic storage cell of the present utility model.

Principle of work of the present utility model: input speech signal converts single-ended signal to through input pattern, enter the signal that obtains after AGC unit (automatic gain control unit) amplifies in the suitable level range afterwards, this signal through simulating signal switch enter CODEC and finish compression after, be converted to digital signal (A/D conversion), give 32AM163, DSP deposits DRAM memory (dynamic RAM) in after digital signal is done real-time digital compression, so far finishes digitized voice record.Voice playback and other feature operation realize by the Action Manager keyboard, after 32AM163 receives keyboard commands, corresponding data in the storer is taken out, after decompressing in real time, give CODEC chip TP3054, TP3054 does the D/A conversion with these data, produces corresponding sound signal, through register---and manager interface is delivered to the usefulness of manager for inspection.

The NS32AM163VME of this device is the special DSP chip that U.S. NS company produces, the data processing that is used for aspects such as voice, image, the wide 32bit of internal bus, TP3054 is the CODEC chip, contain A/D, D/A and corresponding control and analog compression circuit, QL8 * 12B-X is the product of U.S. QUICKLOGIC company, contains steering logic and interface, be used for finishing the function of similar 8255 peripheral chips such as grade, LM13600M is big dynamic current type amplifier.MPP is an external power supply in recorder interface, V _CcBe the system power supply after the external power supply voltage stabilizing, VP2.5V is V _Cc2.5V reference power source after the step-down, make amplifier can be under the single supply situation operate as normal.VREF is V _CcWith after the GND dividing potential drop as the reference voltage of manager liquid crystal, when the SIG signal is playback, through the simulating signal switching part, present, for the input signal of manager playback unit from the sound signal of CODEC output.Input pattern conversion work principle: analog input can be added in JIN ₁On also can be added in MIX ₁, MIX ₂On, single-ended input is added in JIN ₁, the mixed input of both-end is added in MIX ₁And MIX ₂, electronic switch U _16CMake two kinds of working methods not disturb mutually, signal is through JIN during single-ended work ₁Cross C ₁₃, R ₃₁Add to U _1AAmplify, amplify the back and export C to by the 6th pin ₉Be added to U _2AThe output buffering.During both-end work, signal adds to MIX respectively ₁, MIX ₂, through U _2BBe added to U after the mixing _16CThe 4th pin, this moment, the switch conduction mixed signal was by U _16CThe 3rd pin is added to JIN ₁On, the back process is identical with single-ended work.The driving principle of work of dynamic storage unit: a part of A of system processor NS32AM163 address wire _1-12Formerly be used for driving DRAM, U ₁₂Address wire, now be connected to driver U ₈, U ₉, output is added to U again ₁₂On the address wire,, thereby more directly to get well with CPU driving effect because of 74HC244 has stronger driving force.

Claims

A kind of split type digital speech manager, it is made up of voice signal register and voice signal manager two parts; The voice signal register comprises: analog channel, conversion of signals part, signal processing; Analog channel comprises: the impedance conversion of input audio signal, low noise amplify, conversion and control and output signal impact damper are imported in automatic gain control; Signal transfer part branch comprises: analog-digital converter and digital analog converter and coding decoder CODEC; Signal processing comprises: digital signal processor DSP, central processing unit CPU, memory MEM ORY and control interface; The voice signal manager comprises: keyboard, liquid crystal display, information are transcribed part and voice output part, it is characterized in that:

(1), register and manager all have an interface for separating two parts between them, interconnected by cable; Recorder interface P ₁Comprise: the P of 32AM163 processor _AThe mouth link; The P of QL8 * 12B interface chip _BMouth is through last connecting resistance R ₃₂, R ₃₃, R ₃₄, R ₃₅D5～D8 holds as PX0-3 with diode; External power supply V _CC, VP2.5V, SIG and power supply ground GND end; Manager interface P ₁' and recorder interface P ₁Corresponding, P ₁' signal end and liquid crystal LCD, the keyboard JP of interface ₁And the playback unit is connected;
(2). this device also comprises the input pattern change-over circuit, and this circuit has single-ended input end JIN ₁, both-end mixing input end MIX ₁And MIX ₂, the isolation of single-ended input and two kinds of working methods of both-end input is by electronic switch U _16CFinish; U _16CThe B pin be JIN ₁End, A pin are the MIX end, and the C pin is control end PC ₁Described JIN ₁Pass through C ₁₃, R ₃₁Be connected to amplifier U _1AThe ZI pin, U _1A02 pin to be output terminal meet output buffering U through C9 _2AMIX ₁, MIX ₂Respectively through U _2BAfter the mixing, receive U _16CThe A pin; When mixing input, U _16CConducting, U _16CThe B pin be JIN ₁End;
(3). the dynamic storage cell of this device also comprises: driving circuit U8, U9, a part of address line A of system processor NS32AM163 _1-12Be connected to the corresponding input end of driving circuit U8, U9, the output SA of U8, U9 with DRAM pilot brush new signal CAS, RAS _1-12Again with U ₁₂The corresponding address line end be connected.