JPS6055322A - Data imprinting device for camera - Google Patents

Abstract

PURPOSE:To display many necessary characters and pieces of information in addition to data to be imprinted, and reduce the number of wiring and facilitate package wiring greatly by providing an electrooptic element driving means which includes a static and a dynamic driving circuit. CONSTITUTION:When data is imprinted, a keyboard 4 is operated to display a symbol ''PRINT'' on a liquid crystal panel 13 for external display through a connecting terminal line 14 for liquid crystal dynamic drive, and an imprinting ready signal is outputted to a signal input processing means 8 through an information setting circuit means 5. This processing means 8 when inputting a trigger signal from a camera through a trigger contact 7 after receiving the imprinting ready signal holds the time of a timer circuit means 2 at the point of time, and the time is displayed through a liquid crystal driving circuit means 3 and a connecting terminal line 15 for static drive. Further, a lamp 10 for data imprinting is turned by the signal input processing means 8 through a lamp driving circuit means 9 to imprint the date or time displayed on a liquid crystal panel 12 for data imprinting at a proper position on a film image plane.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a data imprinting device that can record data such as a date on film in a camera, and particularly to a data imprinting device that can externally display various information together with the imprinted data. The present invention relates to a data imprinting device having a display device.

[Background of the invention]

A data imprinting device that imprints data such as date and time onto a film in a camera using an electro-optical (display) screen such as a liquid crystal is known, for example, from Japanese Patent Laid-Open No. 123141/1983. There are two types of data imprinting devices like this,
Generally, in addition to the imprinting liquid crystal panel, a display liquid crystal panel for displaying imprint data is provided outside the camera.

By the way, the method for driving the liquid crystal panel involves continuously coloring only the selected segment part for display among the plurality of segment parts.
There is a static drive method in which a desired display is performed by a combination of selectively colored segment parts, and a static drive method in which only the selected segment part for displaying in the first digit is colored, and then the first digit is colored. All segments of the digit are left in a decolorized state, a selected segment for display in the second digit is left in a colored state, and then all segments of this digit are "decolored", and so on. , each digit is displayed in sequence, and when the last digit is displayed, the display returns to the first digit and the above-mentioned display is repeated, and each digit is displayed repeatedly in a short time in a time-sharing manner.
A dynamic drive system is known in which a desired display of a plurality of digits is performed using selected segment portions of each digit.

The former has a higher contrast ratio between the ON segment and the OFF segment than the latter, and can display extremely clear characters, numbers, etc., but since a driving terminal is required for each segment electrode, lead wires are required. The disadvantage is that the number is large. On the other hand, the latter does not have the disadvantages of the former and is advantageous in displaying multiple characters and symbols on the same panel, but the disadvantage is that the display contrast ratio cannot be increased at the current technological level. Yes.

In electro-optical elements including liquid crystals for data imprinting, O
It is necessary to increase the contrast ratio between the N segment and the OFF segment. Therefore, at the current technological level,
It is not possible to adopt a dynamic drive method, and a static drive method must be used. On the other hand, by adopting such a static drive method, in addition to displaying the imprinted characters externally, it also displays other factors necessary for shooting, such as film sensitivity, shutter speed, aperture adjustment, and other items necessary for imprinting. If you try to display many letters and numbers in the same electro-optical element, the number of land terminals for the element drive will increase, and due to space constraints, it is difficult to display many characters and numbers in the same electro-optical element. This was not possible with conventional static drive type electro-optical elements.

[Purpose of the invention]

The present invention solves the drawbacks of the conventional device ft as described above, displays data similar to the data imprinted on the external display electro-optical element-2, and displays a large number of necessary characters in addition to the imprinted data. To provide a data imprinting device for a camera at low cost that displays information such as information, has a small number of wires, and is extremely easy to mount and wire.

[Summary of the invention]

In order to achieve the above object, the present invention provides a data imprinting device having an electro-optical element for imprinting data for imprinting data onto film in a camera, in which imprinted data recorded on the film is transferred to an external device. A single electro-optical element for external display is provided, consisting of an imprinted data display section for displaying the imprinted data, and an information display section capable of displaying various information other than the imprinted data, and these electro-optical elements are An electro-optical element drive circuit means including a static drive type drive circuit and a dynamic drive type drive circuit is provided for driving, and the imprint data display section and the data imprint electro-optical element are connected to each other in a fixed manner. The technical point is to configure the information display section to be driven using a dynamic drive method.

〔Example〕

Embodiments of the invention will now be described in detail as illustrated in the accompanying drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention in a so-called camera data bag having an imprinting means on the back cover of the camera. In FIG. 1, the output pulses of an oscillator l such as a crystal oscillator are counted by a clock circuit means 2 including a frequency divider and a latch circuit, and seconds, minutes, hours, days, and the like are outputted from the clock circuit means 2. The output signals representing the month and year are arranged to be input to the liquid crystal driving circuit means 3 including a decoder. On the other hand, the aperture adjustment, shutter speed adjustment, film sensitivity adjustment 1 adjustment, and other information necessary for data imprinting photography set in the camera are set by the keyboard 4, and the set information signals are also transmitted to the information setting circuit means. The signal is inputted to the liquid crystal drive circuit means 3 via the signal line 5. The correction circuit means 6 is a circuit for correcting and updating the clock data of the clock circuit means 2 and the numbers for imprinting from the information setting circuit means 5, and is configured to operate according to instructions from the keyboard 4. , the trigger contact 7 is a contact such as a single contact of a camera that emits a trigger signal in accordance with the shirt dripping 11-, and the trigger contact 7 is a contact such as a single contact of a camera that emits a trigger signal in accordance with the shirt dripping 11-. Outputs the trigger signal. The signal input processing means 8 sends a signal to the clock circuit means 2 and the lamp drive circuit means 9 in response to the trigger signal.
At the same time, the data imprinting lamp (including a flash discharge lamp or a light emitting diode) is transmitted through the lamp drive circuit means 9 to temporarily hold the time at the time of inputting the trigger signal.

) 10 is configured to emit light. Note that the clock circuit means 2, the information setting circuit means 5, the correction circuit means 6, and the signal input processing means 8 include a central processing unit (CPU) 11.
The liquid crystal drive circuit means 3 includes a circuit included in the data imprinting liquid crystal panel 1.
2 and the imprinted data display section 13A of the external display liquid crystal panel 13, and a dynamic drive circuit that drives the information display section 13B that displays other information. is driven via the liquid crystal dynamic drive connection terminal line 14.

Further, the data imprinting liquid crystal panel 12 and the imprinting data display section 13A of the external display liquid crystal panel 13 are configured to be driven via a bifurcated liquid crystal static drive connection terminal line 15. There is.

Next, the configurations of the external display liquid crystal panel 13 and the data imprint liquid crystal panel 12 will be described. The imprint data display section 13A of the external display liquid crystal panel 13 and the data imprint liquid crystal panel 12 have exactly the same configuration and can display six-digit numbers. Each digit of the six-digit number consists of one liquid crystal, a common electrode placed on one side of the liquid crystal, and seven segments as shown in FIG. 2 on the other side. It is displayed by electrodes, and connection terminals (a
-g) When a drive signal is received, the liquid crystal in the portion corresponding to the segment electrode receiving this signal is colored to perform display. The data display section 13A and the data imprinting liquid crystal panel 12 each display six-digit numbers using one liquid crystal, one common electrode, and six sets of 7-segment electrodes.

Further, in order to display a six-digit number, there are six sets of terminals a to g connected to each segment electrode. The display portion 13A of the panel 13 and the panel 12 described above are portions that perform static drive as described later. The film sensitivity (directly "ASA..." (400 in the example), film counter frame number "..." displayed on the information display section 1:3B of the external display liquid crystal panel 13
・EXJ (20 in the example), shutter speed Iff (
In the example, l/4000), aperture fiifErAV・
. . .'' (in the example, 11), each number is displayed by seven segments.

The configuration for displaying one digit of each of these numbers is to provide a segment electrode as shown in FIG. The segment electrode shown in FIG. 3 (CB) is provided on the side. and connection terminals (a' to c', COMl-00 connected to one to three segment electrodes)
By controlling the voltage applied to M3), a predetermined voltage is applied between the electrodes of each segment sandwiching the liquid crystal, and only the liquid crystal portion to which this predetermined voltage is applied is colored.
Display two numbers. Thereafter, this colored state is canceled, and the voltage applied between each segment of the next digit is controlled, so that only the liquid crystal portion to which the predetermined voltage of this digit is applied is colored, and the number of this digit is displayed. In this way, the numbers of each digit are displayed in a time-division manner 11 times over a short period of time,
- This allows criminals to see each digit as if they were displayed simultaneously. In this practical example, each digit is 1/
Dynamic drive is performed at 3 duty. Displays other than numbers (character displays) in the information ammonium water section i3B are voltage control of each segment electrode provided on one side and the other side of the liquid crystal common to the liquid crystal of the imprint data display section 13A. done by. In this embodiment, this character is also displayed by the dynamic drive. However, this character is not displayed in 7 segments. In this way, in the external display liquid crystal panel 13 of this device, each segment electrode of the data display section 13A and the information display section 13B and the common electrode of the data display section 13A are arranged on one liquid crystal, and the data display section 13A is static. Drive System: The information display section 13B is configured to be driven using a dynamic drive system.

Note that when the symbol rPRINTJ is displayed, it indicates that the numbers (usually the year, month, day, hour, minute, and second) shown on the data imprinting display section 13A are to be imprinted, and the symbol [N
When Oj is displayed, the imprint data display section 1
3A indicates the imprint number. Furthermore, when the symbol rALARMJ is displayed, the imprint data display section 13A shows the alarm time like a commercially available digital watch, and an alarm display mark 13C configured similarly to the information display section 13B lights up. Moreover, when the set time comes, an alarm sound is generated by a piezoelectric buzzer (not shown) or the like. The above symbols and numbers are set in conjunction with the number of shooting frames (e.g. 20 ASA4
00), shutter speed fit (e.g. 1/4000
), diaphragm (for example, AVII), etc., may be adjusted in conjunction with the setting members of the camera.

Since the embodiment shown in FIG. 1 is configured as described above, first, by turning on a power source (battery) not shown,
The oscillator 1 oscillates, the clock circuit means 2 starts operating, and the output signal of the clock circuit means 2 is transmitted to the liquid crystal drive circuit means 3.
The year, month, and day are displayed on the imprint data display section 13A of the external display liquid crystal panel 13, which is transmitted through the liquid crystal static drive connection terminal line 15. Accordingly, the correction circuit means 6 changes the output signal of the clock circuit means 2 (fast-forward or fast-reverse) to correct the displayed year, month, and day. Next, by operating the keyboard 4, hours, minutes, and seconds are displayed on the imprint data display section 13A. Furthermore, by operating the keyboard 4 again, the correction circuit means 6 is operated, and the clock circuit means 2
The output signal is changed to match the hours, minutes, and seconds displayed on the imprint data display section 13A on a time signal or the like. In addition, various information displayed on the information display section 13B of the liquid crystal panel 13 for external display is input to the liquid crystal drive circuit means 3 via the information setting circuit means 5 by operating the keyboard 4, etc., and the liquid crystal dynamic drive The information is displayed on the information display section 13B driven through the connection terminal line 14. However, the various information once displayed can be changed by operating the correction circuit means 6 by operating the keyboard 4@.

The numbers displayed on the imprint data display section 131 are
The data is similarly displayed on the data imprinting liquid crystal panel 12 via the same liquid crystal static drive connection terminal line 15. Therefore, the output pin (terminal on the liquid crystal drive circuit means 3 side) of the liquid crystal static drive 2 drive connection terminal line 15 for driving both the data imprinting liquid crystal panel 12 and the imprint data display section 13A is used in common. Therefore, there is no need to provide a connection terminal line 15' as shown by the chain line in FIG. 1 especially for the imprint data display section 13A.

For data imprinting, first operate keyboard 4,
The symbol rPRINTj is displayed on the external display liquid crystal panel 3 via the liquid crystal dynamic drive connection terminal line 14, and an imprint permission signal is outputted to the signal manual processing means 8 via the information setting circuit means 5. After receiving the imprint permission signal from the information setting circuit means 5, the signal input processing means 8 inputs a trigger signal 11 from the camera via the I-1 contact 7, and at that point, the clock circuit means 2, and temporarily display the date or time on the external display liquid crystal panel 13 and the data imprint liquid crystal panel 12, which are displayed via the liquid crystal drive circuit means 32 and the liquid crystal static drive connection terminal line 15. keep it unchanged. On the other hand, the signal human power processing means 8
The data imprinting lamp lO is caused to emit light via the lamp drive circuit means 9, and the data imprinting liquid crystal panel 12
the date or time displayed on the film screen at an appropriate position.

Instead of imprinting the date and schedule, if you want to imprint the imprint number on the desired film screen, use the keyboard 4 to enter the imprint number on the external display liquid crystal panel 1.
When displayed on the imprint data display section 13A of No. 3, symbols rNO, J are displayed on the information display section 13B. To imprint this imprint number on the film screen, operate the keyboard 4 and press the symbol 1-PR on the information display section 13B.
If "INT" is displayed, the data imprinting lamp 10 will emit light in response to the camera's trigger signal, and the imprinting number displayed on the data imprinting liquid crystal panel 12 (on the external display crystal panel 13) will be displayed. (same as the displayed imprint number) can be imprinted.

Now, in the above embodiment, the external display liquid crystal panel 13 is used as a static drive type imprint data display unit 13A that continuously displays information and a dynamic drive type information display unit that displays time-divisionally. It consisted of part 13B. If all the displays on the LCD panel 13, including the imprinted data display section 13A, were constructed using the dynamic drive method, which is generally considered to be advantageous for a large number of displays, then the LCD drive G on the side of circuit means 3
1. In addition to the liquid crystal static drive connection terminal line 15 for driving the data imprinting liquid crystal panel 12, there is a liquid crystal dynamic drive connection terminal line l for driving the original imprint data display section 13A. 5
If we drive a 6-digit number in 7 segments at 1/3 duty as shown in Figure 3 (A), then the terminal COMI in Figure 3 (B)
-COM3 is also used as a common terminal for other information numbers, but the liquid crystal dynamic connection terminal line 151 (the first
18 (:(x6
=18) We will have to add a new production line. On the contrary, in the embodiment shown in FIG.
By sharing the connection terminal line 15 with the connection terminal line 15, the number of output pins on the liquid crystal drive circuit means can be significantly reduced, and the reduced number of lines can be used for displaying other data. Therefore, not only can you display a lot of information, but also
This is extremely advantageous in terms of cost reduction and mounting wiring.

In the embodiment shown in FIG. 1 above, the explanation has mainly been limited to liquid crystal display elements, but the present invention is not limited to liquid crystal display elements only, and can be applied to other electro-optical (display) elements. Needless to say, it's a good thing.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to greatly reduce the number of drive connection terminal lines of an external display liquid crystal panel, and accordingly, the number of output bins of the liquid crystal drive circuit means can be reduced. Furthermore, the reduction in the number of connection terminal lines makes mounting and wiring extremely easy, making it possible to manufacture the device at low cost. Further, according to the present invention, by using the reduced number of connection terminal lines for displaying other information, there is an effect that more information can be displayed.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of an embodiment of the present invention, Fig. 2 is a wiring diagram of the 7-segment numbers used in the imprint data 1 display section of the embodiment of Fig. 1, and Fig. 3 is a diagram similar to Fig. 1. This is a wiring diagram between the seven numerical segments used in the information display section of the embodiment, and Figure 3 (A) is the pattern of the surface electrode segment, the third
Figure CB) shows the pattern of the back electrode segments. [Explanation of symbols of main parts] 3... Electro-optical confectionery drive circuit means 10...
...Lamp 12 for data imprinting...Electro-optical element 13 for data imprinting...Electro-optical element for external display 13A...Imprinted data display section 13B ... Information display section 14 ... Dynamic drive connection terminal line 15 ... Static drive connection terminal line Applicant Nippon Kogaku Co., Ltd. Agent Takashi Watanabe, T '1 figure 20 ice 5 figure (c) (B)

Claims (1)

[Claims] In a data imprinting device having an electro-optical element for imprinting data for imprinting data onto a film in a camera, an imprint data display section for externally displaying imprint data recorded on the film; A single external display electro-optical element consisting of an information display section capable of displaying detailed information other than data; and an electro-optical element comprising a static drive type drive circuit and a dynamic drive type drive circuit. 8 stages of drive circuit means are provided,
Data for a camera, characterized in that the imprint data display section and the data imprint electro-optical element are configured to be driven by a static drive method, and the information display section is configured to be driven by a dynamic drive method. Imprint device.