CN2199547Y - Display apparatus for film length and picture width - Google Patents

Abstract

The utility model relates to a display apparatus for film length and picture number. The utility model is composed of a signal processing circuit, a hexadecimal unit for number counting and setting, a decimal counting unit, a reset switch, a display screen, etc., wherein, the signal processing circuit is composed of a signal amplification circuit, a level converter, a direction arbiter, and asignal shaping unit. The utility model has the advantages of reversible counting, display of film length and picture number, convenient use, high precision, and long service life.

Description

Display apparatus for film length and picture width

The utility model relates to the display device of footage and picture width of cloth number, is applied to the footage of film film synchronizer and rewind bench and the indication of picture width of cloth number.

Existing footage index device is to adopt mechanical counter, exists numeral and shows unintelligiblely, and difficulty that can not reading in the darkroom is manipulated inconvenience, because mechanical part is fragile, and the indication poor reliability, the life-span is short.Employing decimal system counting can only carry out Length Indication, and picture width of cloth number that can not the accurate Calculation film.

The purpose of this utility model provides a kind of contactless, electronics shows, can intuitively show footage and accurate display frame width of cloth number in environment such as darkroom, and is easy to use, dependable performance, and the life-span, the long footage and the picture width of cloth counted display instrument.

Footage that the utility model provides and picture display instrument are by signal processing circuit, counting circuit, display device and casing constitute, described signal processing circuit is by signal amplification circuit, level translator, discriminating direction device and signal reshape unit constitute, described counting circuit is made of sexadecimal counting circuit decade counter circuit and reset switch etc., on digital display screen, be divided into 4 film length display windows, unit is that Foot and 2 picture width of cloth digital displays show window, and unit is Foot, 16 width of cloth pictures are a Foot, match with general in the world film measurement unit.

The footage that the utility model provides and the picture width of cloth are counted display instrument, has clear display, can be in the darkroom reading, easy to use, electronic circuit adopts integrated circuit, dependable performance, life-span is long, the length that not only can show film, and the characteristics such as width of cloth number of display frame accurately are for film film synchronizer, rewind bench provide a kind of brand-new footage and the display instrument of picture width of cloth number.

Description of drawings:

Accompanying drawing 1 is the circuit structure block diagram of the utility model display instrument

Accompanying drawing 2 is that the signal processing circuit of the utility model display instrument is implemented circuit diagram

Accompanying drawing 3 is that the utility model counting circuit is implemented circuit diagram

Accompanying drawing 4 is the utility model display screen synoptic diagram

1 is signal amplification circuit among the figure, and 2 is level translator, and 3 is the discriminating direction device, 4 is signal reshape unit, 5 is heuristicimal counter, and 6 are decimal system counting display unit, and 7 is reset switch, 8 put counting unit for sexadecimal counting, 9 are sexadecimal counting display unit, and 10 is 4 figure place length display screens, and unit is Foot, 11 is that the two figure place width of cloth are counted display screen, and unit is the width of cloth.

Below in conjunction with accompanying drawing circuit structure of the present utility model and embodiment are described in further detail:

Referring to accompanying drawing 1, the input end of signal amplification circuit 1 links to each other with sensor, output terminal connects level translator 2, level translator 2 output terminal closure arbiter 3 and reset switches 7, discriminating direction device 3 output terminals connect signal reshape unit 4, signal reshape unit 4 output terminals connect sexadecimal counting unit 5 and the sexadecimal counting is put counting unit 8, reset switch 7 output terminals connect by sexadecimal counting unit 5 and sexadecimal counting puts counting unit 8, sexadecimal counting unit 5 output terminals connect decimal system display unit 6 and the sexadecimal counting is put counting unit 8 and level translator 2, and the sexadecimal counting is put counting unit 8 output terminals and connected sexadecimal counting display unit 9.

The principle of work of the display instrument that the utility model provides is that the signal of origin autobiography sensor amplifies through signal amplification unit 1, produces square wave, differentiates through level translator 2 conversions and discriminating direction device 3, delivers to signal reshape unit 4.Be processed into standard signal, this standard signal is sent into sexadecimal counting unit 5 and sexadecimal counting and is put counting unit 8 and count, enter decimal system counting display unit 6 and sexadecimal display unit 9,7 reset responses of reset switch finally demonstrate picture width of cloth number (width of cloth) on the shot length (Foot) and 11 demonstrating expression on the display screen 10.

Referring to accompanying drawing 2,3, from the irregular voltage signal entering signal amplifying unit IC of sensor and Input Sigral A.B ₁(1) and (2) end, carry out processing and amplifying, produce square wave, hold by (6) and (7) and deliver to level translator IC respectively ₂(1), (3) end and discriminating direction device IC ₃(1), (4) end, IC ₃According to IC ₁The signal of sending here and through IC ₂(5), signal travel direction that (7) are sent differentiate (adding cut signal), locking invalid signals, and allow useful signal from IC ₃(6) signal reshape unit IC is delivered in end (or (7) end) output ₄(2) ends (or (1) end), IC ₄Signal Processing is become standard signal, by (4) end (or (9) end) signal is delivered to sexadecimal counting unit IC thereafter ₅(5) end (or (4) end) and sexadecimal counting are put counting unit IC ₆(5) end (or (4) end).IC ₅4 purpose is counted signal and is distributed, and is plus signal effectively (or for cut signal effective) by the trend of top signal, after full 16 numbers (promptly expiring 16 width of cloth pictures); IC ₅Produce one at (12) end and carry out a signal (promptly 1), show the count signal of (decimal system counting display circuit) in the unit as the length gauge digital display.IC ₅(12) Duan carry signal is delivered to IC ₂(2) end, through level conversion, IC ₂(6) hold 3 ends of signal being delivered to SW, hold IC by SW (7) ₆, IC ₇(14) end, make its automatic return-to-zero.When the subtrahend state, signal is by IC ₃(7) deliver to IC ₄(1) end is by IC ₄(9) end is delivered to IC ₅(4) end is at IC ₅Counting equals at 0 o'clock, reduces by a width of cloth picture again, and this signal makes IC ₅(40193), inside transfers 15 automatically to, at IC ₅Counting is less than after 0, IC ₅(13) produce a borrow signal, show (decimal system counting display circuit) cut signal in the unit as the length gauge digital display, counting subtracts 1.This signal is delivered to IC simultaneously ₆, IC ₇(11) end, make IC ₆, IC ₇Count value put and count to 15, be 15 by the sexadecimal display unit.Sexadecimal display unit and decimal system counting display unit are the decimal system, the reversible counting display circuit.

The sexadecimal counting is put counting unit (IC ₆, IC ₇), to form by 2 40192, fundamental purpose is to finish movie pictures tens of senary reversible countings, latchs, and puts several functions, at P _1N1(or P ₁When N2) coming signal and IC ₅Count synchronously.When adding number state, P _1N2The signal of sending here, IC ₆, IC ₅Counting is worked as IC simultaneously ₆Count value greater than 9 o'clock, IC ₆Value be 0, by IC ₆(12) deliver to IC ₇(5) a carry signal, IC ₇Numerical value be 1 by 0, work as IC ₆, IC ₇Count value greater than 15 o'clock, by IC ₅(12) produce a carry signal through IC ₂(2) end is after the level conversion, by IC ₂(6) end output is through SW(3), cross (7) to IC ₆, IC ₇(14), make its automatic return-to-zero.At subtrahend state, P _1N1Send signal here, IC ₆With IC ₅Subtrahend is worked as IC simultaneously ₆Value less than 0 o'clock, at IC ₆(13) end produces a borrow signal, makes IC ₇Become 0, IC by 1 ₆Value be 9, work as IC ₆, IC ₇Count value less than 00 o'clock, by IC ₅(13) produce a borrow signal and deliver to IC ₆, IC ₇(11) end, the P according to 40192 ₀～P ₄The state that is provided with is put 15 numerical value and is counted to IC ₆, IC ₇In, make it show this value.

IC like this ₆, IC ₇Except self display frame width of cloth number, also expressed between the pass between picture width of cloth number and length (Foot).SW is except by IC ₅Signal give IC through it ₆, IC ₇Produce beyond the automatic return-to-zero, can total system be resetted.

Claims (2)

1, a kind of footage and the picture width of cloth are counted display instrument, by signal processing circuit, counting circuit, display device and casing constitute, it is characterized in that described signal processing circuit connects signal amplification circuit (1) by the sensing circuit output terminal, the signal amplification circuit output terminal connects level translator (2), level translator (2) output terminal closure arbiter (3) and reset switch (7), and discriminating direction device (3) output terminal connects signal reshape unit (4); Described counting circuit connects signal reshape unit (4) by sexadecimal counting unit (5), the output terminal of reset switch (7), its output terminal connects the sexadecimal counting and puts counting unit (8), decimal system display unit (6) and level translator (2), the sexadecimal counting is put counting unit (8) and is connected signal reshape unit (4), the output terminal of reset switch (7) and sexadecimal counting unit (5), its output terminal connects sexadecimal display unit (9), and described display device adopts charactron to make display screen.

2, display instrument according to claim 1, it is characterized in that described counting circuit is connected sexadecimal counting unit by signal reshape unit IC4 (4) with (9) end, (4) of 40193 integrated circuit (IC) 5 and (5) end, put (4) and (6) end of counting unit 40192 integrated circuit (IC) 6 with the sexadecimal counting, (12) of IC6 and (13) end are put counting unit (8) with (4) and (6) end formation sexadecimal counting of 40192 integrated circuit (IC) 7, (13) end of IC5 connects IC6, (11) end and the sexadecimal counting of IC7 show (6), (12) end of IC5 connects level translator (2) and the sexadecimal counting shows (6), (14) end of IC5 and (5) of reset switch SW, (6) end links to each other, (7) of reset switch SW, (8) end connects IC6, (14) end of IC7, (5), (6) end shows that with decimal system counting (6) link to each other, (3) (6) end of end and IC2 links to each other, (15) of IC6, (10) end connects high level by resistance R 11, (1), (9) termination low level, (15) end of IC7 connects high level by resistance R 12, (1), (10), (9) termination low level, IC6, (2) of IC7, (3), (6), (7) termination sexadecimal shows (9).

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