CN1328401A

CN1328401A - Timing storage circuit of TV programs

Info

Publication number: CN1328401A
Application number: CN 00114626
Authority: CN
Inventors: 范伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-06-10
Filing date: 2000-06-10
Publication date: 2001-12-26

Abstract

A timing storage circuit for TV programs features that in its clock pulse trigger circuit, the ringing pulse function of electronic watch is used to respectively trigger power switch controller, key storage and timer for timely recording TV programs. Its storage circuit is composed of R/W memory, A/D converter and D/A converter. Its advantages are no limitation in program length and simple structure.

Description

Timing storage circuit of TV programs

The present invention relates to a kind of timing storage circuit, in particular for the circuit of control TV programme timed recording broadcast.

The device that can be used for recording TV program in the market mainly contains video tape recorder, its mode of recording is to adopt crystal oscillator to carry out two divided-frequency, three frequency division, four frequency divisions etc. respectively, make timer in conjunction with special microprocessor simultaneously, its operating state also will just can be carried out in conjunction with mechanical structure, weak point is complex structure, the cost costliness.

Task of the present invention provides whole circuit device a kind of simple in structure, cheap, can carry out the timed recording of TV programme easily and play.

For solving above-mentioned task, the solution that the present invention adopts is: adopt the clock pulse circuits for triggering, in order to mains switch and the taking-up previous channel feature frequency of controlling each parts, remove to regulate automatically tuner, reach the regularly purpose of frequency-selecting.Adopt memory circuit, TV signal is carried out analog-to-digital conversion after, store, again digital signal is carried out digital translation when waiting to need to play after, play.

Clock trigger impulse circuit is made up of electronic watch, control panel, power supply switch controller, timer, button memory, wherein electronic watch links to each other with control panel, carry out time set by the chain of command utmost point, electronic watch is respectively with power supply switch controller, timer, link to each other by key memory, the tinkling of pieces of jade pulse of shaking of time after being provided with is removed to trigger power supply switch controller respectively, to open all parts mains switches; The triggering timing device carries out timing; Trigger and press key memory, take out the previous channel feature signal, remove to regulate automatically tuner, so that allow the TV channel signal of preliminary election pass through from tuner.

The program storage circuit is by readable and writable memory, analog to digital converter, and digital to analog converter is formed.Wherein analog to digital converter respectively with tuner, readable/writeable memory links to each other, the television analog signals therewith that tuner is sent here converts digital signal to, and sends into readable/writeable memory and store.Wherein digital to analog converter links to each other with readable/writeable memory, television set respectively, when needs are play, take out digital signal from readable/writeable memory, send into weighted-voltage D/A converter, with digital signal conversion or television analog signals therewith, deliver to television set again and play by digital to analog converter.

Carry out the TV programme storage owing to adopted electronic watch to carry out time set in the above-mentioned solution with the employing memory, make this circuit arrangement simple in structure, its program recording length is unrestricted.

Below in conjunction with drawings and Examples the present invention is described in further detail.

Fig. 1 is a timing storage circuit of TV programs

TV signal is delivered to tuner 2 tuners 2 by the closed edge train port one and by connecting line 3 and channel button 4 is set and joins in Fig. 1, and channel is provided with button 4 and links to each other with television set by closed edge train port 5, and tuner 2 links to each other with channel memory 7 by connection 6; Tuner 2 links to each other with power supply switch controller 9 by connecting line 8, and tuner 2 links to each other with control panel 11 by connecting line 10.When needs carry out channel when being provided with, the channel that at first closes is provided with button 4, allow TV signal pass through tuner 2, enter TV, regulate tuner 2 by control panel 11 through closed edge train port 5, note each television channel, and send in the channel memory 7 through connecting line 6 so that when needing recording TV program from now on channel selection usefulness, after finishing channel and being provided with, open channel button 4 is set, tuner 2 is no longer linked to each other with television set by closed edge train port 5.

When needs carry out the timed recording TV programme, at first be provided with, by the function key of control panel 11, the timing ringer function of electronic watch 12 is set, will be transferred to the time that will record ring time; Numerical key by control panel 11 deposits the channel number keyboard that will record by key memory 13 in; By the function key on the control panel 11, after recording time length set, send into timer 14.

When timing one arrives, electronic watch 12 sends the ringing pulse signal, and Fen Sanlu removes to trigger respectively power supply switch controller 9, timer 14, by key memory 13.First via ringing pulse signal removes to trigger electrical contact controller 9 by connecting line 15, opens all parts mains switches by power supply switch controller 9; The second road pulse signal goes to trigger by key memory 13 by continuous lines 16, the channel digit of having stored is sent to channel memory 7, from channel memory 7, take out channel number keyboard corresponding channel frequencies again, go to regulate high intermediate frequency head 2 automatically by connecting line 17, allow corresponding TV channel signal pass through from tuner 2; The Third Road pulse signal removes the triggering timing device by connecting line 18, and timer is picked up counting.Send a pulse signal by timer 14 and remove to trigger power supply switch controller 9, close all parts mains switches by connecting line 19.

When TV signal when tuner 2 is sent, be sent to analog to digital converter 21 by connecting line 20, here television analog signals therewith is converted or digital signal, and send in the readable/writeable memory 23 by connecting line 22, here digital signal is write among the stored unit of readable/writeable memory by the encoder of readable/writeable memory 23 inside.When needs are play, by control panel 11 controls, open the mains switch of read/writable storage 23 and digital to analog converter 25, the decoder of readable/writeable memory 23 inside is read corresponding digital signal from memory cell, by connecting line 24 digital signal is sent into digital to analog converter 25, here digital to analog converter 25 converts the digital signal of sending here to television analog signals therewith, and sends into television set by closed edge train port 5, reaches the purpose that can play.

Claims

1, a kind of by clock trigger impulse circuit, television channel setting, but the circuit arrangement of the timed recording TV programme that memory constitutes is had by circuit arrangement:

A television channel is provided with circuit, and this tuner 2, channel memory 7, channel are provided with button 4 and constitute, and by the channel that closes button 4 are set, and regulating tuner 2 can be stored in each television channel of record in the channel memory 7,

Clock pulse circuits for triggering are by control panel 11, power supply switch controller 9, timer 14, press key memory 13 and form, and it is characterized in that: this circuit arrangement also has:

In the clock pulse circuits for triggering, use electronic watch 12, electronic watch 12 is respectively with timer 14, link to each other by key memory 13, control panel 11, power supply switch controller 9, after carrying out time set by 11 pairs of electronic watches of control panel 12, make electronic watch 12 at preset time, the time ringing pulse of utilization removes to trigger power supply switch controller 9 respectively, by key memory 13, timer 14, reaches and opens all parts switches, select channel, the purpose that timing is recorded.

A memory circuit, it is made up of readable/writeable memory 23, analog to digital converter 21, digital to analog converter 25, and television analog signals therewith is converted into digital signal here and stores when recording, and during broadcast, digital signal is converted into television analog signals therewith here.