JPH0611763A - Data recording and reproducing device - Google Patents

Abstract

PURPOSE:To write data for post processing in a large quantity in the limited space of a film and to enable the coexistence of the data to be freshly written with the already optically written data. CONSTITUTION:Micropits 4 are formed on the surface of the film 2 by a micro- heat generating part 3 in tight contact with the film 2 arranged in the traveling route of the film 2, by which information is recorded. Light is projected to the pits 4 on the surface of the film 2 recorded with the information by the micro-ruggedness and the reflected light reflected from the film 2 by this projected light is received. The information is read out by detecting the scattered light of the reflected light by the pits 4 provided on the surface of the film 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data recording device for recording data on a film for post-processing, and a data reproducing device for reading the recorded data.

[0002]

2. Description of the Related Art Conventionally, data such as a photographing environment has been recorded on a part of a film. For example, a newspaper company develops a negative film and then saves only the necessary ones together with a memo about the shooting environment. In such a case, the information such as the shooting environment that should be written in the memo is stored in the film. It is very effective if it can be recorded at a predetermined position of.

Further, in the library house, when selling a film to an advertising agency or a publishing company, it is necessary to search for a film requested by a customer from a plurality of films arranged according to genres. . Even in such a case, if the information is recorded on a part of the film, it is easy to organize and it is effective to search for it in a short time.

Techniques for recording information on a part of the film in this manner are disclosed, for example, in JP-A-62-208028, JP-A-2-148030, and JP-A-2-149835.
Japanese Patent Publication No. 51-95837, Japanese Utility Model Publication No. 48-
No. 38841, Japanese Utility Model Laid-Open No. 62-116243,
Japanese Utility Model Publication No. 1-166332, Japanese Utility Model Publication No. 171433
No. 8 publication and the like.

And, among the disclosed techniques, there are three
Many of them are used for general merchandise such as bar code display of the number of frames on a 5 mm color film, punch holes for identifying the type of color film, and date imprinting at the time of photography. You can say that.

Further, the data to be recorded on the film is of a type that is consciously left on the photographing screen such as a photographing date and time, and a relatively large amount of data for post-processing such as a memo of photographing condition and photographing contents Therefore, it is divided into a type that is left outside the shooting screen.

[0007]

However, in the case of the former type described above, the conventional technique is sufficient,
In the case of the latter type, the space outside the photographing screen is limited, and the limited space already contains information such as the number of frames, film sensitivity, and manufacturer name. Therefore, it cannot coexist with the conventional data recording by barcode or mechanical punch hole, and the large amount of data as described above must be written on the film holder or on the back of the printed photograph. There wasn't.

Since such a large amount of write data is not recorded on the film itself, there is a problem that it is very troublesome if the number of sheets to be processed requires confirmation each time in order to correspond to the film. . Further, the writing of the above-mentioned data is often done by handwriting, and there is a problem that it is difficult to automatically perform the reading process.

The present invention has been made in view of the above problems, and an object of the present invention is to enable a large amount of data for post-processing to be written in a limited space of a film, and to write new data. It is an object of the present invention to provide a data recording device capable of coexisting with data optically written in advance on a film, and a data reproducing device for reading data recorded by the data recording device.

[0010]

In order to achieve the above object, in a data recording apparatus according to the first aspect of the present invention, an apparatus using a film-based photographic film such as resin is used in a film traveling path. Predetermined information is recorded by forming microscopically reproducible fine irregularities at predetermined positions on the surface of the film by a minute heat generating means that is in close contact with the arranged photographic film.

Further, in the data reproducing apparatus according to the second aspect, the light projecting means for projecting light onto the recording portion on the surface of the photographic film on which information is recorded by the minute unevenness, and the light reflected from the film. And a light receiving means provided at a position for receiving the light. The light receiving means reads the predetermined information by detecting scattered light of reflected light due to unevenness provided on the surface of the film.

[0012]

That is, in the data recording apparatus according to the first aspect of the present invention, it is possible to optically reproduce at a predetermined position on the surface of the film by the minute heat generating means closely contacting the photographic film arranged in the traveling path of the film. Information is recorded by forming such minute irregularities.

In the data reproducing apparatus for a camera according to the second aspect, light is projected onto the recording portion on the surface of the photographic film on which information is recorded by the fine projections and depressions by the projection means, and the projection means is used to project the light. The reflected light from the film is received. Then, the light receiving means reads out the information by detecting the scattered light of the reflected light due to the unevenness provided on the surface of the film.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Before describing the embodiments of the present invention, the outline of the present invention will be described with reference to FIGS.

FIG. 1 is a schematic cross-sectional view of a film showing how a concave portion, that is, a pit is formed on a film base as a recording portion for recording a large amount of film data. As shown in FIG. 1, the pit 4 is formed as a shallow recess in the thickness direction of the film 2, and there is no influence on the strength. Further, since it causes a slight amount of scattering optically, it can coexist with an optical recording such as a bar code at the same position as the formation portion of the pit 4.
According to the present invention, the film base 5 is locally heated by using the thermal head 1 to be softened and deformed, thereby forming the pits 4 having extremely shallow recesses and recording data.

The film base 5 on which the thermal head 1 is pressed is locally deflected by the minute unevenness of the minute heat generating portion 3 of the thermal head 1. Normally, if the pressure is removed as it is, it returns to the original state. However, when the heat generating portion of the thermal head 1 is at a high temperature, the film base 5 made of resin is glass-transposed and becomes soft. In this softened state, the thermal head 1
When the pressure of is removed, it becomes stiff in the flexed state, and this flexure is recorded as it is. This flexure is a recess, and a large amount of desired film data can be recorded by this recess. Then, generally, the pits 4 recorded by the recesses due to the influence of the outside air temperature on the film 2
Since the shape and size of each of them are often different, the recording form is preferably digital recording based on the distance between pits.

Next, FIG. 2 is a diagram showing a method for detecting information from the pit 4.

As shown in FIG. 2, the film base 5 on which the pips 4 are formed is irradiated with a light beam for recording digital data. For example, when the light flux strikes a smooth part of the film base 5 as shown by the light flux B,
As it is, the light is specularly reflected and the light flux proceeds in the regular reflection direction. However, as shown by the luminous flux A, the luminous flux that hits the pit 4 is diffusely reflected and diffused in different directions.

Therefore, if the detector is placed right above in FIG. 2, a part of the diffused light can be picked up only when the pit 4 is present. The light flux used for this detection does not have to be visible light in particular, and there is no problem even if it is near infrared light from an infrared light emitting diode. Conversely, in the case of a color film, the infrared light is used to detect the background image. It also has the advantage of disappearing and making it easier to detect.

The outline of the present invention has been described above with reference to FIGS. 1 and 2.
Although the description has been made with reference to, an embodiment of the present invention will be described next. First, a first embodiment of writing film data according to the present invention will be described with reference to FIGS.

FIG. 3 is a view for explaining an example in which digital data is recorded on the edge portion 2a of a 35 mm film by the recording system of the present invention, and the digital data recorded on the film has a structure as shown in FIG. It has become. This digital data is written in 8-bit units in the left-right direction in the figure, and these 8-bits constitute one block.

This one block is a SYNC signal which is the first synchronization signal for indicating the synchronization of write data from the top, a block number indicating the identification number of one block by one 8-bit data, and then eight 8-bit data. Minute data, four parities for error correction of eight data, and a SYNC 'signal which is a second synchronization signal paired with the first synchronization signal.

FIG. 5 is a diagram showing the construction of a first embodiment in which the present invention is mounted on a single-lens reflex camera body. In addition, in FIG. 5, the back surface of the single-lens reflex camera body 10 is described with the back cover removed.

In FIG. 5, reference numeral 11 indicates a camera finder, and reference numerals 12a to 12j indicate electrical contacts for communication between the camera body 10 and a back cover (not shown) on which the thermal head 1 (see FIG. 6) is mounted. Indicates. The contacts 12a to 12j are the contacts 12a to 12g.
Signal contacts and a power source and a ground potential contact peculiar to the digital data writing back cover are used, and the contacts 12h to 12j are also used as contacts for other back covers, for example, a back cover for imprinting the date. Reference numeral 13 indicates a cartridge chamber in which the film cartridge is placed, and reference numeral 14 indicates a position where the thermal head 1 for writing digital data comes when the back cover (not shown) is closed. Further, reference numeral 15 indicates a platen roller for sandwiching the film by the thermal head 1, reference numeral 16 indicates a guide pin for positioning the film, reference numeral 17 indicates a film feeding for detecting the feeding of the film. Shows a roller. Further, reference numeral 18 indicates a film chamber in which the exposed portion of the film is wound up, and 19a,
Reference numeral 19b is a pressure plate rail, and 20a and 20b are film rails for accurately setting the position at the time of feeding the film.

FIG. 6 is a view showing the positional relationship among the platen roller 15, the film 22 and the thermal head 1.

In FIG. 6, when the back cover (not shown) is closed, the thermal head 1 is moved to the thermal head position 14 in FIG.
Comes down, the platen roller 15 and the thermal head 1
The film 22 is sandwiched by. In FIG. 4 shown above, the parity is arranged near the bottom row, but it is not necessary to place it here. Depending on the error correction method, the Reed-Solomon product code method or the Reed-Solomon or parity-check cross-interleave method may be used. For example, by adopting the CIRC method or the like used in a compact disc or the like, the data arrangement method can be changed in various ways.

FIG. 7 is a view of the back cover on which the thermal head 1 is mounted as seen from the outside.

In FIG. 7, the back cover 25 is opened and closed at the corresponding portion of the camera body 10 of FIG. 5 by a hinge at the right corner (not shown). And, on the outer surface of this case back, there are warning light emitting diodes (LEDs).
26a, a power LED 26c for notifying a battery exhaustion, a writing completion LED 26b for notifying a writing operation state,
Writing pattern For example, an initial setting pattern in which a preset data type is written in a predetermined position, a user setting pattern in which a user-set pattern is written, or external data writing in which external data is written Button 27 for selecting various patterns, and pattern display LEDs 26f, 26e and 26d for displaying the selected pattern.
Are arranged.

FIG. 8 is a view showing a battery which can be put in the battery box 24. In this embodiment, a button type Ni is used as a rechargeable battery.
-The Cd secondary battery 240a is connected in series and used. When the battery box 24 is mounted on the back cover 25, the contacts 241 a, 241 d of the battery box 24 come into contact with the electrode contact pieces 24 a, 24 d on the back cover 25. In addition, the battery identification notch 242 has the battery identification contact piece 24.
The type of the mounted battery can be determined by touching b.

FIG. 12 is a diagram showing an example of charging the battery.

As shown in FIG. 12, about 20% is charged by rapid charging at 0.22C until the charging time is about 2 hours,
Fully charged by 0.1C charge. By doing so, it is possible to charge the battery to a charge level that can be used for the time being in a short time without degrading the battery performance. And
For the completion of charging, the conventional technique of detecting that the terminal voltage has decreased by ΔV in FIG. 12 can be used.

In FIG. 9, the thermal head 1 has a back cover 25.
10 is a view showing a state in which the thermal head 1 is rotatably and loosely fixed to some extent by a pin 30, and as shown in FIG. 9, the thermal head 1 is fixed to the back cover 25 by the pin 30.

FIG. 10 shows an adhesive rubber 34 between the heat dissipation plate 29 supporting the thermal head 1 and the back cover 25.
FIG. 4 is a diagram showing a state in which the heat radiation plate 29 is sandwiched between the heat radiation plate 29 and the back cover 25 so that the heat radiation plate 29 can move freely to some extent and the heat from the thermal head 1 can be quickly transmitted to the back cover 25. And
The thermal head 1 attached to the heat sink 29 has a spring 3
At 1, the platen roller 15 sandwiches the film 22.

Further, the dew condensation sensor 37 mounted on the upper part of the pressure plate 21 is for preventing thermal stress from being applied to the thermal head by water droplets due to dew condensation. A water absorbing member 33 is attached, and the water absorbing member 33 protrudes near the end of the pressure plate 21. By disposing the battery box 24 and the heat radiating plate 29 at positions close to each other, the heat dissipation of the thermal head 1 is improved and the battery is activated by heat.

On the other hand, as shown in FIG. 11, the flexible substrate 36 supplies electric power to the thermal head 1. The flexible board 36 is provided with contacts 35a and 35b arranged in an arrow shape at its end, and is arranged along the heat dissipation plate 29 and is attached to the back cover 25 by the contact screw 32.
Is electrically connected to a printed circuit board (not shown).

Therefore, the present head module has the contact screw 3
By removing the pin 2 and the pin 30, it can be detached from the back cover 25 and replaced for maintenance. By doing so, it becomes easy to replace the thermal head 1 due to wear and damage and to clean the clogging of the film base material.

Further, as shown in FIG. 9, a back cover 25 is attached to the head guide pins 21a and 21b provided on the camera body.
When the thermal head 1 is inserted into the holes 29a and 29b formed in the heat dissipation plate 29 as shown in FIG. 11, the position of the thermal head 1 can be accurately determined.

FIG. 13 is a diagram showing an example of a data writing format.

As shown in FIG. 13, a predetermined fixed amount of correction / preheating area is provided for detecting the inclination of the written pit row during reproduction before writing data and for preheating operation of the thermal head 1.

In this embodiment, a central processing unit (CPU) for several purposes is mounted to record data, so timing signals and recordings exchanged by the CPU between the camera body and the case back are recorded. It is necessary to communicate information such as data to be transmitted.

14 to 17 show the structure and communication format of the communication lines of the main CPU and the sub CPU placed on the camera body and the back cover.

First, as shown in FIG. 14, the main CPU
140 and the sub CPUs 141a to 141f are respectively connected in parallel, that is, star-connected by two communication lines that are pulled up by pull-up resistors 142 and 143 of a clock line 144 and a data line 145, respectively.

FIG. 15 is a diagram showing the state of the clock line 144 and the data line 145 at the communication start portion. The communication line of each CPU has a high impedance when no communication is performed. The voltage of the communication line is at a high level by the pull-up resistors 142 and 143.

Further, FIG. 16 is a diagram showing a detailed portion of the communication start request portion of FIG. 15, and FIG. 17 is a diagram showing a detailed portion of the communication start acceptance portion of FIG. In the communication system as shown in FIGS. 14 to 17, the communication between the camera body and the CPU for data recording arranged on the back cover and the communication between the other CPU and the camera body can be performed by the signal line of one line. So
You can effectively use the limited space.

The above communication will be described below with reference to the flowchart of FIG.

When communication is started, the CPU first determines whether or not the data line and the clock line are at the high level "H" (step S101). Then, in step S101, if it is determined not to be "H", the CPU determines that the communication line is being used, and if it is determined to be "H", the CPU waits for 1/2 clock. After that (step S102), it is determined again whether or not the data line and the clock line are "H" (step S103).

Then, in step S103,
If it is determined not to be "H", the CPU determines that the line is in use, and if it is determined to be "H",
The CPU sets the data and clock lines to output (step S105), sets the clock line to high level "H" and the data line to low level "L" (step S106).

Next, the CPU waits for t ₁ time shown in FIG. 16 (step S107), and then sets the clock line to “L” and the data line to “H” (step S108). Then, the CPU waits for t ₂ time shown in FIG. 16 (step S109), and then sets the clock line to “H” and the data line to “L” again (step S110). Subsequently, the CPU sets the clock line to the input (step S111) and resets the internal timer (step S112). Then, the CPU determines whether or not the internal timer has exceeded a predetermined time (step S113).

Then, in this step S113,
When it is determined that the internal timer has exceeded the predetermined fixed time, it is determined that the partner CPU is absent (step S114). Then, in step S113, when the CPU determines that the internal timer has not elapsed for the predetermined time or more, the CPU confirms whether or not the clock line is "L" (step S115).

Further, in this step S115,
If it is judged not to be "L", the CPU again judges whether or not the internal timer is equal to or longer than the predetermined time, and if it is judged to be "L", the partner code is received and the partner judges It is determined whether or not they match (step S117).

Then, in this step S117,
When it is determined that the other CPU is present, the CPU performs synchronous communication (step S118) and ends the operation (step S119). When it is determined that the partner CPU does not exist, the CPU sets the data line to "H" (step S120), determines that there is an error, and ends the operation (step S121).

In the receiving CPU, when an interrupt due to a communication start request is generated from the transmitting CPU, acceptance of another interrupt is first prohibited (step S301), and the clock line is output, as shown in FIG. And the data line is set to the input (step S30).
2). Then, the clock line is set to the low level (step S303), and after transmitting its own code (step S304), it waits for t5 time (step S).
305). Next, it is determined whether or not the data line is "H" (step S306).

If it is determined in step S306 that it is not "H", synchronous communication is performed and a clock is sent (step S307), and then a data line and a clock line are set as inputs (step S30).
9). When it is determined in step S306 that the data line is "H", the data line and the clock line are immediately set to the input (step S309). In this way, interruption by calling is enabled (step S310), and calling is reset (step S311).

FIG. 20, FIG. 21, and FIG. 22 are diagrams showing the configuration of a circuit for detecting the communication start request signal by hardware.

First, in the circuit shown in FIG. 20, one of the current paths of the transistor element 200a is a resistor 202.
It is connected to the transistor 201a via c, the other is grounded, and switching is controlled by a signal input from the clock line. Then, the transistor element 200b
Has one of its current paths connected to the transistor 201a via the resistor 202c, the other of which is grounded, and is switching-controlled by a signal input from the data line.
Further, one current path of the transistor 201a is connected to the power supply, the other current path is grounded through the resistor 202b, and is connected to the base of the transistor 201b. One current path of the transistor 201b is grounded, and the other current path is connected to the power source via the resistor 202a and outputs the output terminal OUT communication start request signal.

Next, in the circuit shown in FIG. 21, AND
A clock line is connected to one input terminal of the element 211a,
A data line is connected to the other input terminal via a NOT element 210. Then, this AND element 211
The output terminal of a is connected to the set terminal S and the reset terminal R of the counter 212. Further, the data terminals D0 to D3 of the counter 212 are connected to the power supply or the ground potential, and the AND element 211 is connected to the clock terminal CK.
The counter clock is input via b. Then, a communication start request signal is output from the C terminal of the counter 212. The circuits shown in FIGS. 20 and 21 having such a configuration are circuits having the same function and are connected to the circuit shown in FIG.

In the circuit shown in FIG. 22, the communication start request signal output by the above FIG. 20 or FIG. 21 is reset terminal R and OR of the flip-flop 220.
It is input to one input terminal of the element 223a. And
The reset signal from the CPU is input to the other input terminal of the OR element 223a, and the negative theoretical OR element 22
It is input to one input terminal of 3b. Further, the output terminal of the AND element 224a whose clock line is connected to one input terminal via the NOT element 225 and whose other input terminal is connected to the data line is connected to the set S terminal of the flip-flop 220. Has been done.

The negative theoretical OR element 223b is connected to the other input terminal of the negative theoretical OR element 223b.
The output terminal of 3b is connected to the set terminal S of the latch 222. The output terminal O of the flip-flop 220 is connected to one input terminal of the AND element 224b, the other input terminal of the AND element 224b is connected to the counter clock, and its output terminal is of the counter 221. It is connected to the clock terminal CK. The output terminal C of the counter 221 is connected to the data terminal D of the latch 222, and the calling signal is output from the O terminal of the latch 222. Note that all or part of these circuits can be performed by software of the CPU.

FIG. 23 is a diagram showing the structure of a circuit for driving the recording system of the present invention.

In FIG. 23, the power source battery 237 is
Switching transistors 239a, 2 whose on / off is controlled by a signal from the 05 terminal of the CPU 231
38f. The switching transistors 239a and 238f are connected to the noise removing capacitor 241d and to the common electrode of the 5V three-terminal regulator 236a and the resistors 232 corresponding to the thermal head 11. Also, 5.
The 2V 3-terminal regulator 236b is directly connected to the battery. Further, the regulator 236b is connected to the V _DD terminal of the CPU 231 via the diode 240a and the power source from the main body via the diode 240b.

The output of the comparator 238i that compares the constant voltage of the constant voltage diode 242 with the power supply voltage is input to the I ₀ terminal of the CPU 231 that performs various controls. This I ₀ terminal is connected to the CPU 2 via the resistor 238h.
It is connected to O ₆ of 31 to prevent latch-up. The O ₂ , O ₃ , and O ₄ terminals of the CPU 231 are
The drivers 230a, 230b, and 230c are connected to the D terminals of the drivers 230a, 230b, and 230b, respectively.
The resistors 232 corresponding to the thermal head 1 are connected to the Q terminals of 230c.

Further, the terminals O _{6 to} O _{10 of the} CPU 231 are respectively provided with “warning”, “power supply”, “pattern 3”,
The LED 233a and the LED 233c for displaying "Pattern 2", "Pattern 1", and "Complete writing" are connected. The LED 233b indicates "power" and is turned on by turning on the switching transistor 239a.

A switch 235 for selecting the above pattern is connected to the I ₁ terminal of the CPU 231 which is grounded via the resistor 238a. Further, each of the LEDs 233b to 233f and the switch 235 is connected to the 5V three-terminal regulator 236a via the resistors 234b to 234f or directly. LED
233a is connected to the V _DD terminal of the CPU 231 via the resistor 234a. Here, the operation of the circuit will be described with reference to FIGS. 24 and 25.

First, FIG. 24 is a view showing the write mode. By operating the pattern selection switch 235, the write modes are "no recording", "pattern 1", "pattern 2", "pattern 3", "recording". Repeat “none”.

FIG. 25 is a diagram showing the warning, the power supply, and the write completion LED display. When the warning is "blinking", the power supply is "lit", and the write completion is "lit", the operation is possible. Indicates that the battery is dead. Further, when the warning is "blinking", the power supply is "lighting", and the write completion is "off", the battery is dead to the extent that it cannot operate and the operation of the CPU is stopped. Depending on the setting, the writing operation may not be stopped due to the battery running out. When the warning is "flashing", the power supply is "off", and the write completion is "off", the condensation display is shown and the operation is stopped. Also,
When the warning is "lit", the power is "off", and the write completion is "off", it indicates other troubles. This is, for example, a mode setting error, a connection error, or a system error.
Furthermore, when the warning is "OFF", the power supply is "OFF", and the write completion is "OFF", it indicates standby. This is, for example, no film.

FIG. 26 is a diagram showing a method of detecting a dead battery.

As shown in FIG. 26, when the battery voltage gradually decreases due to writing, the constant voltage circuit and the comparator 238i detect the dead battery.

In the present embodiment, if the film moving distance Δx when the battery dead detection signal becomes high is longer than the threshold value 2 and shorter than the threshold value 1, the operation can be continued at the next writing. If the battery is consumed and the threshold value is shorter than 2, it is determined that it is difficult to continue the operation for the next writing and the battery is dead.

FIG. 27 is a diagram showing a winding pulse output as the film moves. This Figure 2
As shown in FIG. 7, since the moving speed of the film is low at the beginning of the winding, the interval of the winding pulse is wide and gradually narrows to become a constant interval.

FIG. 28 is a graph showing the relationship between the winding speed calculated from the winding pulse interval and time shown in FIG. 27 and the position of the moved film.

As shown in FIG. 28, writing is carried out from the second pulse at which the speed is relatively stable. Then, the previous pulse width is converted into the winding speed, and the threshold value 1
If the threshold value is less than or equal to 2, the writing is performed at the slowest speed, if the threshold value is 2 or less, the writing is performed at a medium speed, and if the threshold value is 2 or more, the writing speed is maximum. As described above, the write control may be performed by dividing into several groups, but the control may be performed by performing a one-to-one calculation based on the previous pulse width.

FIG. 29 is a diagram showing another example of the position where the digital data of the film in FIG. 3 described above is written. As shown in FIG. 29, the 35 mm film 2 has perforation holes for feeding the film, and data is written in a portion between the perforation holes.

FIG. 30 is a diagram showing a format of data to be written in FIG.

As shown in FIG. 30, as compared with the data format at the write position shown in FIG.
Except for the YNC and SYNC 'signals, the two formats shown in FIG. 4 are arranged vertically symmetrically.

FIG. 31 is a diagram showing the relationship between the drive timing of the thermal head and the position of the film. This Figure 3
1, the position of the perforation hole on the upper side,
The lower side shows how the electric power is supplied to the thermal head at each position. Writing is performed from left to right in the figure. Then, until the first perforation hole passes, the thermal head is kept warm for a short period of time with a constant current supply. Then, after passing through the perforation hole, the writing operation starts. Further, the heat retention operation is started after entering the next perforation hole or after a certain distance from the edge of the perforation hole. This warming operation may be performed at a wide interval and gradually narrowed at first.

A method of driving the head during pit writing will be described below with reference to FIGS. 32 (a), 32 (b) and 32 (c). In the figure, the pulse-shaped is the power supply to the head, and the curve is the temperature of the heating element of the thermal head. When the temperature of the heating element exceeds the printing temperature, the film base undergoes glass transition and becomes soft and printing is possible.

First, in FIG. 32 (a), when writing one pit, a voltage is applied so as to be divided into three drive pulses, which are wide at first and gradually narrow. Then, FIG. 32B is a diagram showing a case where the control based on the duty ratio is not performed as in FIG. Thus, in FIG. 32 (a), all the pits always exceed the printing temperature in the same range, so that the pits can be made uniform in size, whereas in FIG. 32 (b), the first pit is small. After that, it grows bigger and bigger.

Further, FIG. 32C is a diagram showing an example in which such a concept of duty driving is applied to residual heat and an example in which duty driving is performed without finely dividing the pit portion. By thus driving the residual heat portion in a duty manner, more accurate control becomes possible. Further, the sizes of the pits can be made uniform to some extent without controlling the pits by finely dividing them. Since it is not necessary to finely control the pit portion in this way, the labor of control can be greatly saved.

FIG. 33 is a diagram showing the relationship between the duty ratio of the applied voltage and time. As can be seen from FIG. 33, the duty ratio changes within one pit, but at the first and second dots. The duty ratio changes.

34 and 35 are views for explaining a method of detecting a perforation hole when it is necessary to know the position of the perforation hole as in the case of writing data in the writing position shown in FIG. .

FIG. 34 is a partially enlarged view of the thermal head, in which a white part is a part through which electricity is conducted and a shaded part is a heating element. The characteristic of this head is that the heating elements 354a at both ends are
That is, 354f is not connected to the common line 341.

FIG. 35 is a circuit diagram showing this usage. In FIG. 35, the heating elements 354a to 354f of the thermal head 1 have stray capacitances adjacent to each other. For example, the heating element 35 not connected at one end
Focusing on 4a, stray capacitance is generated between the heating element 354b and the adjacent heating element 354b. This stray capacitance changes under the influence of the dielectric constant of the film base in contact.

Therefore, when there is a film, the capacitance becomes large, and when there is no film, the stray capacitance becomes small. By utilizing this fact, for example, when a high frequency is applied to the signal line 340 in a superimposed manner, the heating element 3 whose one end is open
A high frequency is induced in 54 by the stray capacitance. High frequency waves are similarly induced at the other end. This high frequency is greatly induced when the film is in contact with the film and has a high dielectric constant, and conversely, when it comes to the part of the perforation hole and is separated from the film, the dielectric constant is decreased and is induced small.

Therefore, if the high-frequency signal induced in the heating element whose two ends are open becomes weak, it means that the high-frequency signal is in the perforation hole, and therefore the adder 35
The perforation hole can be detected by summing the two high frequency signals at 0a and extracting the high frequency signal. Further, the dielectric constant of the film base also changes depending on the condition of the film base.

Especially, it should change greatly near the glass transition point. This change in dielectric constant and the pits at both ends are SY
The NC / SYNC 'signal, which is always generated at the time of data writing, is used alternately, and the signal from the heating element, which is open at one end, is applied to the subtractor 350b to take the difference. This makes it possible to detect that the resin corresponding to one of the heating elements has reached the glass transition point.

The coil 351 and the capacitor 353 shown in FIG. 35 superimpose the high frequency signal on the write signal. Then, the presence / absence of the film base is determined by the high frequency output 1 obtained by the adder 350a, and the subtractor 35
It is judged from the high frequency output 2 obtained by 0b whether the writing is completed.

FIG. 36 is a diagram showing the structure of a circuit for detecting that the film base has reached the glass transition point without using a heating element having one end open.

As shown in FIG. 36, in the present circuit, arbitrary continuous five heating elements are selected, a Wheatstone bridge is formed by stray capacitances in the heating elements, and a high frequency subtractor is similarly used depending on the balance of each stray capacitance. Input to and detect. That is, when any of the five heating elements is in a different state, that is, in the state where only one pit is marked, the bridge balance is lost and a high frequency signal is output from the output of the subtractor 361. By detecting this high-frequency signal, it is possible to determine whether or not the pit is marked, and this is reflected in the drive of the head.

The configuration of the first embodiment relating to writing has been described above. Next, the operation of this embodiment will be described.

A film cartridge is loaded in the cartridge chamber 13 shown in FIG. 5, the film is wound into the film chamber 18 and the film 22 is set, and the camera back cover 25 shown in FIG.
When the is closed, the thermal head 1 shown in FIG. 6 descends to the thermal head position 14 in FIG. 5 and presses the film with the platen roller 15 so as to sandwich it.

Then, the film 22 is accurately positioned by the guide pins 16 and the film rails 20a and 20b, and is fed by the roller in the film chamber 18 and the film feeding roller 17, so that the thermal head 1 controls heat generation. By doing so, the data is written in the position shown in the lower side of FIG.

More specifically, the back cover 2 shown in FIG.
When 5 is closed, the radiator plate 29 with the thermal head 1 of FIG. 9 is applied to the platen roller 15, and the holes of the radiator plate 29 are fixed by the head guide pins 21a and 21b shown in FIG. To be done. Further, the thermal head 1 presses the film 22 with the force of the spring 31.

In this way, the head guide pins 21a, 21b
Since the position of the head module is determined by, the head module needs to move freely to some extent. Therefore, a large gap is provided between the ends of the heat radiating plate 29 that encloses the pin 30 for fixing the back cover 25 and the heat radiating plate 29, and an adhesive heat radiating rubber 34 is sandwiched between the back cover 25 and the heat radiating plate 29. So to some extent, it is designed to move freely.

Here, regarding the shape of the heat radiating plate 29, the thermal head 1 is slightly tilted (θ shown in FIG. 9) in a state of being in contact with the platen roller 15, and the thermal head 1 is almost perpendicular to the film 22. The heat generating part of the head 1 is attached. This is to prevent the film from rubbing the adhesive portion between the thermal head 1 and the flexible substrate 36 to which it is attached.

Further, if the thermal head is used in a state where water droplets due to dew condensation are attached, it may be damaged by heat shock. Therefore, the condensation sensor 37 is attached to the back surface of the pressure plate 21, the condensation is detected, the writing operation is stopped, and the condensation is displayed.

Further, in consideration of the case where the cooled film 22 is loaded in the camera to cause dew condensation, water droplets partially gathered through the pressure plate are sucked by the water collecting member 33. Also in this case, since the water collecting member 33 is attached to a part of the dew condensation sensor 37, the dew condensation can be detected and the writing operation can be stopped and the dew condensation can be displayed.

As described above, according to the first embodiment of the writing of the present invention, since the thermal head is located on the side of the cartridge room with respect to the photographing screen, data can be recorded up to the last frame of the film. Since the written frame is photographed after writing, it is not necessary to store the write data until the next frame is fed, as compared to when the thermal head is on the film chamber side of the screen, and the memory capacity of the CPU Can be reduced.

Next, with reference to FIG. 37, a second embodiment of writing according to the present invention will be described. Here, only the parts different from the configuration of the first embodiment will be described, and the same parts will be omitted.

In the second embodiment, as compared with the first embodiment, the position of the thermal head for writing data is on the opposite side of the photographing screen. That is, the present embodiment is characterized in that one of the lower sides of the film feeding roller 17 in the figure is also used as the platen roller 15, and the thermal head position 14 is contacted from the left side in the figure.

In such a structure, since the thermal head position 14 is located closer to the film chamber 18, the data to be written is held until the target writing position is reached. Then, in the film chamber 18, the film 22 passes through the film feed roller 17 and then is wound up by a film winding roller (not shown) in the film chamber 18 to enter the inside of the film chamber 18.

As described above, according to the second embodiment of the writing of the present invention, the writing portion by the thermal head position 14 and the platen roller 15 is provided in the film chamber 18.
By moving to the direction of (1), the shutter unit located near the position where the platen roller 15 is arranged in the first embodiment is not restricted and the design becomes easy.

Further, since the film feeding roller 17 and the platen roller 15 are shared, the number of parts can be reduced. By these, further miniaturization can be realized.

Next, with reference to FIG. 38, a third embodiment of writing according to the present invention will be described. As shown in FIG. 38, the present embodiment has a configuration similar to that of the second embodiment at the writing position, but is characterized in that the orientation of the thermal head 1 is different. The details of the structure around the head are the same as those in the second embodiment, and will not be described. In such a configuration, when the back cover 25 shown in FIG. 7 is closed, the heat dissipation plate 29 having the thermal head 1 shown in FIGS. 6 and 9 is applied to the platen roller 15. Then, the head guide pins 21a and 21b are used to dissipate the heat radiation plate 29.
The holes are fixed and the exact position is determined. Further spring 3
The thermal head 1 presses the film 22 with the force of 1. Since the position of the head module is determined by the head guide pins 21a and 21b in this manner, the head module needs to move freely to some extent.

Therefore, a large gap is provided between the end portions of the heat radiating plate 29 enclosing the pins 21a and 21b for fixing the back cover 25 and the heat radiating plate 29, and the adhesive heat radiating rubber 3 is provided.
4 is sandwiched between the back cover 25 and the heat radiating plate 29 so that it can move freely to some extent.

The shape of the heat dissipation plate 29 is such that the thermal head 1 is slightly tilted while it is in contact with the platen roller 15, and the heat generating portion of the thermal head 1 is formed almost vertically on the film 22. Has become. This is to prevent the film 22 from rubbing the adhesive portion between the thermal head 1 and the flexible substrate 36 to which it is attached.

As described above, according to the third embodiment of the writing of the present invention, the thermal head can be applied from the traveling direction of the film, so that the portion other than the heat generating portion of the thermal head is attached to the film. Rubbing is eliminated and the chance of scratching the film is reduced. Further, by winding the film 22 as in the second embodiment, the film 22 is removed from the platen roller 15.
Stable recording can be performed because the influence of changing the angle when is displayed is reduced.

Although the embodiments relating to writing have been described above, the embodiments relating to reading of the present invention will now be described.

First, with reference to FIGS. 39 to 60, a first embodiment relating to the reading of the present invention will be described.

First, as shown in FIG. 39, in the apparatus of this embodiment, the apparatus for reading out the digital signal written in the film base is attached to the image scanner for electrically extracting the image reflected on the film.

FIG. 40 is a diagram showing the structure of a detector for reading the digital signal written on the film base. As shown in FIG. 40, the light source lens 5 is provided on the optical path of the illumination light from the halogen lamp 508 which is the light source.
10, a mirror 501a is arranged, and the mirror 50
An infrared cut filter 504, a condenser lens 503, and a film 502 are provided on the optical path of the reflected light from 1a. The mirror 501b and the data detection optical system 514 are provided on the optical path of the light transmitted through the film 502.
c, a mirror 501c is provided, and the mirror 501
On the optical path of the light reflected by c, the return mirror 5
11 are arranged. Furthermore, the return mirror 5
On the optical path of the light reflected by 11, the monitor optical system 5
06 and an area sensor 505 are provided.

On the other hand, the light emitting diodes 513a and 513b
On the optical path of the light emitted from the mirrors 512a, 51a.
2b are provided respectively, and the mirrors 512a, 5a
A film 502 is provided on the optical path of the light reflected by 12b.
Are arranged. The data detection optical systems 514a and 514 are provided on the optical path of the reflected light from the film 502.
Line sensors 500a and 500b are provided via b. Here, two sets of the line sensor, the data detection optical system, and the mirror are provided because the data is written on the upper and lower sides of the film.

In such a structure, the light source light emitted from the light source 508 is guided to the condenser lens 503 and the infrared cut filter 504 to illuminate the film 502. And the image shown on this film 502 is the return mirror 5
When 11 is in the state shown in the figure, the image is relayed by the field lens and the monitor optical system 506, projected on the area sensor 505 and displayed as a monitor. Further, the return mirror 511 is rotated so that the light travels to the line sensor 500c to detect a video signal.

On the other hand, the infrared ray from the LED 513 is reflected by the mirror 512 and illuminates the film base surface. Then, the infrared light radiated on the film base surface is directly specularly reflected. However, when the pit is written, diffuse reflection occurs at that portion, and the data detection optical systems 514a and 514 located at an angle slightly deviated from the above regular reflection angle.
After reaching b, pit images are formed on the line sensors 500a and 500b. Therefore, the film 502 moves along with the reading by the image scanner, and at the same time, the pit images are sequentially reproduced on the line sensors 500a and 500B. The details of the image scanner portion will be described below.

Color originals for photographs include a positive image film in which the color and density of an object are the same and a negative film in which the hue is reversed and the density is also reversed. Then, in the image scanner, in principle, a color image can be reproduced by detecting a film image using color separation filters of three primary colors (red, blue, green).

However, when the above-mentioned negative film is read with the additive red, blue, and green filters, the color of the negative film is composed of the complementary colors of cyan, magenta, and yellow, so the read data is converted. Will be required. Therefore, if the color separation filters can be easily replaced with cyan, magenta, and yellow, it is possible to save the labor of reading and then converting by calculation, and a great simplification can be expected.

A color separation filter that solves the above problems when the image scanner handles color images will be described below with reference to FIGS. 41 to 44.

First, FIG. 41 is an overall image of the color separation filter. The color filters are the color separation filter A518a and the color separation filter B518b incorporated in the light source section, and the filter motor 517 for sequentially switching the color separation filters is the halogen lamp 508. , Light source lens 515, light source lens 5
16 light source lens 515 and light source lens 51
It is configured to be inserted between 6.

Then, as shown in FIG. 42, the color separation filter A 518a and the color separation filter B 518b are each composed of a disc having two cyan, magenta and yellow films attached thereto. In other words, these three filters are traversed by the filter motor 517 one after another in the light flux formed by the light source lens 515 and the light source lens 516 one after another. Further, by changing the rotation direction of the filter motor 517, it is possible to switch between a subtractive color filter and an additive color filter as shown in FIGS. In this way, the type of filter can be changed simply by changing the rotation direction of the filter motor, so that a compact system that does not require calculation can be obtained.

In addition to such a filter switching system using two disks, there is also a cube switching system as shown in FIG. This is a filter block 520 consisting of a cubic filter, a filter motor 517 that rotates the filter block 520 in a diagonal direction, a filter frame 519 that supports the filter motor 517 and the filter block 520, and a filter frame 519 that rotates to select the type of filter. It is composed of a type switching motor 521 for changing.

FIG. 46 (a) is a developed view of the filter block 520. By arranging the filters in the order shown in FIG. 46 (a), light rays are directed in a direction perpendicular to the plane. When it is passed, a complementary color filter as shown in FIG. 46B can be realized and can be switched one after another by rotation of the filter motor 517. Further, when the type switching motor 521 is rotated by 45 degrees and a light beam is passed in a direction in which the edge portion of the filter block 520 is in the front direction, different complementary color films are passed through as shown in FIG. Becomes a filter. Also in this case, the filter motor 51
It will switch in sequence with 7 rotations.

Next, FIG. 47 is a diagram showing the structure of a light source capable of varying the color temperature for an image scanner.
As shown in FIG. 47, the color film causes a color shift with a hue according to the color temperature locus on the chromaticity diagram depending on the state of the light source at the shooting location. This color shift correction is generally called color temperature correction. However, various correction methods are known. One of them is a method of adjusting with a filter, but this method has a drawback that an enormous amount of filters are required to perform fine correction. further,
There is a method of changing the light amount of each color at the time of color separation, but there are drawbacks that the device for changing the light amount becomes complicated and the operation becomes slow. Similarly, changing the time of light intensity integration for each color,
It is possible to change the gain of the amplifier for each color, but the scanning speed is limited and the dynamic range and S
There is a drawback that / N deteriorates. Further, the above-mentioned method has a drawback that the adjustment is complicated because it is changed so as to match the color temperature locus.

Therefore, as shown in FIG. 47, the color temperature correction is performed by utilizing the fact that the voltage of the light of the halogen lamp changes so as to move on the color temperature locus.

In FIG. 47, the controller 470
When the color temperature correction set switch 475 is pressed, the controller 470 adjusts the voltage of the light source 508 using the W / B signal [RY] and the W / B signal [BY]. With only this operation, the halogen lamp 508 changes on the color temperature locus, so that the color temperature can be corrected without complicated calculation.
FIG. 48 is a diagram showing a circuit for detecting the signal of the photodiode sensor at high speed, high accuracy, and low noise.

In the circuit shown in FIG. 48, the image light reaching the photodiode sensor 485a becomes a photocurrent and flows into the base of the transistor 484a. However, since the collector of the transistor 484a is applied with a high frequency current to which a direct current is applied, the amplitude of the high frequency current is modulated by the photocurrent of the photodiode sensor 485a. Then, the first-stage high-frequency amplifier circuit and the second-stage high-frequency amplifier circuit perform the first-stage amplification with low noise. By using a high frequency in this first-stage high frequency amplifier circuit and using a tank circuit in place of the normally used collector resistor for DC amplification, noise due to the heat of the resistance can be prevented, so that a circuit with high magnification and low noise can be achieved.

Next, the high frequency component is removed by the voltage doubler rectifier circuit, and only the signal in which the original photocurrent is amplified is taken out.
Then, the video signal which is the amplified photocurrent is further output through the buffer amplifier using the operational amplifier. In addition to this, a circuit for removing a bias portion included in the video signal is provided. As a result, the bias value can be changed so that the amplifier at the next stage will not be saturated. The signal detection circuits of the image scanner, the filter switching, and the white balance adjustment photodiode sensor are not the main parts of the present invention, and therefore detailed description thereof will be omitted.

The configuration of the first embodiment relating to reading has been described above. Next, the operation of this embodiment will be described.

FIG. 49 (a) is a diagram showing how a moving average is performed for each 3 × 3 portion of the digital data of the memory map. For example, 3 × shown in FIG. 49 (a) is used. The average value calculated from the area 3 is recorded at the position shown in FIG. 49 (b).

FIG. 50 is a diagram showing the relationship between the value after calculation and the value before calculation by the above moving average. The value before calculation is shown by a bar graph, and the value after calculation is shown by a line graph.

As shown in FIG. 50, since the digital signal emerges due to the fine irregularities smoothed by the moving average, the pits can be detected by detecting the position of the local max indicated by the downward triangle in the figure. The position can be calculated.

Next, FIG. 51 shows the values after calculation by the moving average of the areas other than the above for the sake of explanation. As shown in FIG. 51, as shown in FIG. The data of is generated by noise that cannot be removed even by moving average. FIG. 52 is a diagram showing the position of the local max.
As shown in FIG. 53 and FIG. 54, which are rotated horizontally and turned horizontally, the local max is added in the vertical direction of FIG. 53 to obtain a distribution as shown in FIG.

Since the added direction is the horizontal direction in the film shown in FIG. 3, the horizontal direction in FIG. 54 (a) is the vertical direction in the film shown in FIG. 3, and the width and the interval between the pits are constant. You are doing it. Therefore, all known pit intervals and numbers are applied to FIG. 54 (a), and the distribution sum of squared deviations from the target point is obtained as shown in FIG. 54 (b) for each distribution. The range for obtaining the sum of squares of deviations is a range of one half of the next pit, and the sums of squares of deviations applied are shown by numbers in FIG. 54 (b).

Next, FIG. 55 shows the values of the sum of squared deviations calculated in FIG. 54. As is apparent from FIG. 55, the third combination from the top of FIG. 54 (b) is obtained. Since the sum of squared deviations of is minimized, the point is indicated by an upward triangle in FIG.

Further, FIG. 56 is obtained by adding the left and right data of the position indicated by the upward triangle. Since there are only 15 columns of data in the horizontal direction in the direction shown in FIG. 56, the combination with the most shaded portions is obtained when 15 data are taken at each position. In the figure, the numbers shown are the numbers of the corresponding shaded areas.

FIG. 57 is a graph showing the number of shaded portions corresponding to the positions of the range of 15 in FIG. The position of the peak shown in FIG. 57 is shown in FIG.
In 6, the range frame is displayed thicker. Since the pit position in the vertical direction could be determined in the film having the structure shown in FIG. 3, it is displayed vertically in 15 squares in FIG. Here, the data position has not yet been determined in the horizontal direction of FIG.

FIG. 59 is a diagram in which a portion where the SYNC / SYNC 'signal is present is read out and if there is a shaded portion in either one, it is displayed by a shaded portion. Then, in the figure, the space between the shaded areas is calculated, and the place where the width changes abruptly is indicated by an asterisk, and the space between the asterisks is halved or added to find one that is close to the surrounding space. The correction is made as shown in the lower side of FIG.

Further, digital data is extracted from the data of FIG. 58 by using the lower line of FIG. 59 as a synchronizing signal.
In this extraction method, the shaded portion in FIG. 58 is set as the closest sync signal signal. When the two shaded portions similarly reach the position of the SYNC / SYNC 'synchronization signal, the closer one of the two is selected, and when the signal strength is stored, the stronger one is selected.

FIG. 60 is a diagram showing the signals thus extracted. In FIG. 60, the information of the pattern is 2
The value is shown on the right side of the figure. The boundary between the blocks of data is the SYNC signal and the SYNC '.
The signal is a portion where the phase is changed by 180 degrees, and is shown by an upward triangle and a downward triangle in the figure.

The "read" operation of this embodiment will be described below with reference to the flowchart of FIG.

First, when an image signal from the line sensor is input (step S401), a moving average is performed for each 3 × 3 portion of the input digital data (step S402). Then, with this moving average, finer unevenness is smoothed, and the pit position is obtained by detecting the position of the local max in the signal in which the digital signal is raised (step S403).

Then, the position in the row direction is detected using the signal obtained by adding the locus maxes in the vertical direction (step S404). Since the added direction is a horizontal direction on the film, the line width, line spacing, and the number are constant. Therefore, try to apply it to all patterns using the already known pit intervals and numbers. The deviation of the pit position from the target point for each pattern is calculated using the sum of squared deviations. The range for obtaining the sum of squared deviations is one-half the range of the next pit. Since there should be only 15 columns of data in the horizontal direction, the combination with the most pits is obtained when 15 pieces are taken at each position.

Then, the portion where the SYNC and SYNC 'signals are present is read out, and if there is a signal in either one, it is set as a synchronizing signal (step S405). Then, the interval of this synchronizing signal is obtained, and the interval is halved when the width thereof changes abruptly. Alternatively, the signals are thinned out, and correction is performed so as to find one close to the peripheral interval.

Then, the boundary between the blocks of data is detected by utilizing the fact that the phases of the SYNC signal and the SYNC 'signal change by 180 degrees (step S406). Then, using the synchronization signal previously obtained, the above step S4
Digital data is decoded from the pit position data obtained in step 03 (step S407). In this decoding method, the sync signal closest to the phase of the pit position is SY.
This is performed depending on whether NC or SYNC '. When the signal mixed with noise is applied to both the SYNC and SYNC 'synchronizing signals, the closest one or the stronger signal strength is selected.

The operation in step S407 will be described in more detail. Each square shown in FIG. 73 represents a pit position. For example, A is noise in the same sync signal as pit B. The phase of the sync signal closest to A is SYNC 'of pit F, and the phase of the sync signal closest to pit B is SYNC of pit G. Then, since B is closer to the synchronizing signal than A, it is known that A is noise and is canceled. The same applies to the intensity in addition to the phase. Further, regarding the pits of C, D, and E, since C is close to the phase of I and D and E are close to the phase of H, C close to SYNC is decoded as "1", and D and E close to SYNC 'are decoded as "0".

In this way, error cancellation is performed using the error correction code described above (step S408), and the operation of this routine ends.

Next, with reference to FIGS. 61 to 63, a second embodiment relating to the reading of the present invention will be described.

First, FIG. 61 is a diagram showing the configuration of the second embodiment relating to reading.

In FIG. 61, the halogen lamp 60
The infrared cut filter 6 is provided on the optical path of the illumination light from 0.
01 and a light source lens 602 are arranged. An optical fiber 603 for a light source is provided on the optical path of the light condensed by the light source lens 602, and a photodiode sensor 605 and a mirror are provided on the optical path of the light guided by the optical fiber 603. 606 and 607 are arranged. A rotary mirror 610 having a lens 608 and an encoder 609 is provided on the optical path of the light reflected by the mirror 607. The encoder 609 for detecting the main scanning position is provided with stripe patterns 621 at equal intervals on the film surface.

Further, on the optical path of the light reflected by the rotary mirror 610, the returnon mirror 61 is provided.
1. A film 618 is provided via the distance correction lens 616. Then, the photodiode sensor 6
Reference numeral 05 is arranged on an image forming surface where the light from the light source is collected at one point by an optical fiber. The optical path length from the photodiode sensor 605 to the end face is arranged around the optical fiber from the photodiode sensor 605 on the image forming surface. Optical fiber 6 from the light source arranged to be longer than that
03 is provided.

The light guided by this optical fiber is also guided to the area sensor side, and an area sensor light source lens 612 and a half mirror 615 are provided on the optical path thereof. A return mirror 611 is disposed on the optical path of the light reflected by the half mirror 615, and the film 61 is provided on the optical path of the light reflected by the return mirror 611 via a distance correction lens 616.
8 are provided. On the other hand, the light emitting diode 619a,
A film 618 is provided on the optical path of the light emitted from 619b.
Are arranged. Further, line sensors 621a and 621b are provided on the optical path of the irregularly reflected light from the film 618 via mirrors 622a and 622b and data detection optical systems 620a and 620b. Two sets of line sensors, two data detection optical systems, and two mirrors are provided because data is written on the upper and lower sides of the film.

In such a structure, the light emitted from the halogen lamp 600 is emitted from the infrared cut filter 60.
1. Light source optical fiber 603 through the light source lens 602
And is reflected by mirrors 606 and 607 that are emitted from a position slightly away from the image plane. Then, the reflected light is reflected by the rotary mirror 610 and is focused on the film surface via the distance correction lens 616. The light transmitted through the film 618 is IR
The light is reflected by the transmission mirror 617, passes through the film 618 again, and travels in the opposite optical path in the opposite direction. The distance correction lens 616, the rotary mirror 610, the lens 608, and the mirrors 607, 60.
The image passes through 6 and forms an image on the image plane 604.

As described above, a blurred optical image is projected onto the film surface by the above-mentioned optical fiber, but since only the necessary portion can be irradiated, the light source light is not wasted compared to the case of irradiating the entire surface of the film, which is small. Since the light source can obtain a sufficient amount of light, the device can be made small.

On the other hand, the infrared light emitting diode 619a,
The light beam from 619b irradiates the film base surface via the infrared transmission mirror 617. Then, the infrared light radiated on the film base surface is directly specularly reflected. However, when the pit is written, irregular reflection occurs at that portion, is reflected by the mirrors 622a and 622b, and is slightly deviated from the above regular reflection angle.
20a, 620b, line sensor 621a, 6
An image of the pit is formed on 21b.

Therefore, the film 618 moves along with the reading by the image scanner, and the pit images are sequentially reproduced on the line sensors 621a and 621b. The scanning in the line sensor arrangement direction, that is, the main scanning is performed by the rotary mirror 610, and the sub-scanning moves the position of the film as in the first embodiment.

Since both the main scanning and the sub-scanning are performed mechanically, the image forming lens 608 always uses the image at the center of the optical axis, which makes it easier to obtain the image forming performance as compared with the first embodiment. Further, the lens 608 can be downsized.

In the configuration using the image scanner as in this embodiment, the distance correction lens 61 is used to detect digital data from the film surface as in the first embodiment.
6 is an inconvenience because it gets in the way. Therefore, as shown in FIG. 61, the detection system is arranged on the back surface of the film.

Next, FIG. 63 is a diagram showing the configuration of an application example of this embodiment in which the return mirror 611 is eliminated to further reduce the size.

As shown in FIG. 63, a rotary mirror 704 is arranged near the pupil plane of the monitor optical system 709. That is, part of the light flux of the monitor optical system 709 is shared with the rotary mirror 704 for the image scanner. With such a configuration, the image scanner can be operated at the same time as the monitor, which saves time. However, the rotary mirror 704
Depending on the angle, the extra light may be reflected to cause flare in the monitor image, so that part is removed by using the element shutter function of the area sensor.

As described above, according to the reading embodiment of the present invention, by bringing the data detection optical system to the back surface of the film, it is possible to prevent the shadow of the data detection system from being reflected during monitoring. For example, it is possible to install compactly without shadowing each other.

The embodiments of the present invention for reading have been described above. Next, referring to FIGS. 64 to 71,
An example of writing after film development of the present invention will be described.

FIG. 64 is a view showing the arrangement of an apparatus for recording digital data on a film after development according to the present invention.
In FIG. 64, the developed film 801 is accurately positioned by the guide plates 800a and 800b, and is moved from right to left in the figure by the film feeding roller 804 and the film feeding roller 805. Further, the film 801 is a thermal head 802 for writing data.
It is sandwiched by the platen roller 803 and the digital data is written by driving the thermal head in accordance with the movement of the film. At this time, the position where the digital data is written is visually aligned with the guide plate 800.
b. A method of detecting by arranging a sensor for detecting the edge of the photographic screen in the guide plate 800a can be considered. The driving circuit and driving method of the thermal head 802 are
The method described in the above-mentioned "writing" is used. Incidentally, FIG.
In the configuration shown in FIG. 4, the film feeding roller 804 and the film feeding roller 805 are arranged apart from the thermal head 802 for the sake of easy viewing, but it is possible to record from the first frame by bringing them closer.

FIG. 65 is a diagram showing an example of a film shape for mounting the reversal film recording digital data according to the present invention on a dedicated film mount according to the present invention. The film shown in FIG. 65 is a film that has been photographed and developed, and then cut off and punched with holes for mounting. It should be noted that the distance between the frames of the camera that shoots this film is wider than before. Further, 810a is a lower data recording area, 810b is an upper data recording area, 812 is a fixing hole formed by a round hole, 811 is a fixing hole whose outer side is cut, and a dimensional error of a mount due to the outer side being cut. Can absorb the effect of.

FIG. 66 is a view showing a film mount for fixing the above film.

The film is fitted into the fixing pin 826 shown in FIG. 66 through the fixing hole 812 of the film and into the fixing pin 825 through the fixing hole 811 of the film. Then, after fitting the film, the portions having the holes 823 and 824 are folded back and pierced into the fixing pins 825 and 826 to be fixed. Then, the part with the hole 821 is folded back to form the pin 8
Stick it in 22 and fix it. Similarly, a portion having the pin 828 is pierced and fixed in the return hole 827.

FIG. 67 (a) is a view seen from the front with the film mount closed, and mount the mount in the upper and lower corners of the film mount in an image scanner, a digital data writing device, or a digital data reading device. A concave-convex portion 830 is provided for automatically carrying the sheet when it is opened. Further, FIG. 67 (b) is a view of the state in which the film mount is closed as seen from the back side, and when the mount is placed in an image scanner, a digital data writing device, or a digital data reading device in the upper and lower corners of the film mount. A rail groove 831 serving as a guide is attached. FIG. 66C is a side view of the film mount with the film mount closed.

As shown in FIG. 67 (a), this mount uses a material that is opaque to visible light but transparent to infrared light as shown in FIG. 68. It is possible to read digital data as it is.

Next, FIG. 69 shows the film of FIG.
It is a figure showing the device attached to the mount of and detecting digital data.

In FIG. 69, the inserted film mount 907 is sandwiched between the mount feeding roller 904 and the guide rail 906 along the guide rail 906, and by the rotation of the mount feeding roller 904, the uneven portion 830 of the film mount 907 is used. Move in parallel. Then, when the mount is moved to a position below the data detection optical system 901 arranged in a substantially parallel position to this mount, the mount is transparent to infrared light by the infrared ray of the infrared LED 903, so that the film is recorded on the film on the line sensor 900. The pit image that was being projected is projected. After that, the digital data is read out by the method proposed in "Reading out". The mask 902 is an infrared LE.
This is for preventing the specular reflection light of D903 from entering the data detection optical system 901.

Next, for writing, since data cannot be written with the mount attached, the portion of the mount shown in FIG. 66 with the pin 828 on the lower side in the drawing is relied on the scribe 820b, and as shown in FIG. Pull open as shown in Fig. 7
1 is inserted into the data writing device. Like the reading device shown in FIG. 69, this writing device is moved in parallel by the mount feed roller 904. Then, when the mount moves, the guide plate 908 presses the mount, and the thermal head 907 records digital data. Mount detection sensor 905 is mount pin 8
This is for detecting that the portion marked with 28 is in the opened state and ready for writing on the film, and for detecting and confirming the position to start writing digital data.

Even if a part of the mount holding the film is opened in this manner, the film and the mount have the fixing holes 811 and 812 and the fixing pins 825 and 826, so that the film does not slip from the mount or slip off. . In addition, the digital data reading device shown in FIG.
The digital data writing device shown in FIG. 71 may be a digital data reading / writing device that also serves as the mount feed roller 904, the guide rail 906, and the mount detection sensor 905. Furthermore, this digital data writing device
The digital data reading device / digital data reading / writing device may be applied to the part of the document table on which the film is proposed, which is proposed in the "reading" section.

As described in detail above, according to the present invention, it is possible to easily record high-density data in a form coexisting with an optical image on a film based on a resin that is generally used, Further, it is possible to provide a data recording device which does not require special processing on the film such as magnetic recording.

[0171]

According to the present invention, a large amount of data for post-processing can be written in a limited space of the film, and newly written data and optically pre-written data can be written on the film. It is possible to provide a data recording device that can coexist with the data recording device, and a data reproducing device that reads data recorded by the data recording device.

[Brief description of drawings]

FIG. 1 is a diagram showing an outline of the present invention, schematically showing a state in which pits are formed on a film base in a sectional view of the film.

FIG. 2 is a diagram showing an outline of the present invention and is a diagram for explaining a means for detecting a pit.

FIG. 3 is a diagram for explaining an example of recording digital data on an edge portion of a 35 mm film according to the recording method of the present invention.

FIG. 4 is a diagram showing a structure of digital data recorded on a film.

FIG. 5 is a diagram showing the configuration of a first example of writing according to the present invention.

FIG. 6 is a diagram showing a relationship among a platen roller 15, a film 22, and a thermal head 1.

FIG. 7 is a diagram showing a state where the back cover 25 with the thermal head 1 is seen from the outside.

FIG. 8 is a diagram showing batteries that enter a battery box 24.

FIG. 9 is a view showing a state in which the thermal head 1 is rotatably and loosely fixed to the back cover 25 by a pin 30 to some extent.

FIG. 10: Adhesive heat dissipation rubber 34 sandwiched between a heat dissipation plate 29 supporting the thermal head 1 and a back cover 25.
FIG.

FIG. 11 is a diagram showing a state in which electric power is supplied to the thermal head 1 by the flexible substrate 36.

FIG. 12 is a diagram showing an example of charging a battery.

FIG. 13 is a diagram showing an example of a data write format of the present embodiment.

FIG. 14 is a diagram showing a configuration of communication lines of a main CPU and a sub CPU placed on the camera body 10 and the back cover 25.

FIG. 15 is a diagram showing states of a clock line 144 and a data line 145 at a communication start portion.

16 is a diagram showing a detailed portion of a communication start request portion in FIG.

17 is a diagram showing a detailed part of a communication start consent part in FIG.

FIG. 18 is a flowchart showing a subroutine used for communication.

FIG. 19 is a flowchart showing a subroutine used for communication.

FIG. 20 is a circuit diagram for detecting a communication start request signal by hardware.

FIG. 21 is a circuit diagram for detecting a communication start request signal by hardware.

FIG. 22 is a circuit diagram in which a call signal for starting communication is detected by hardware.

FIG. 23 is a diagram showing a configuration of a circuit that drives the present system.

FIG. 24 is a diagram showing a write mode.

FIG. 25 is a diagram showing a display of a light emitting diode indicating a warning, a power supply, and a writing completion.

FIG. 26 is a diagram for explaining a method of detecting a dead battery.

FIG. 27 is a diagram for explaining a data writing speed.

28 is a diagram showing the relationship between the winding speed calculated from the winding pulse interval and time shown in FIG. 27 and the position of the moved film.

FIG. 29 is a diagram showing writing positions of digital data on a film.

FIG. 30 is a diagram showing a format of data to be written.

FIG. 31 is a diagram showing the relationship between the drive timing of the thermal head and the position of the film.

32 (a), (b) and (c) are diagrams showing a method of driving a head when writing pits.

FIG. 33 is a diagram showing the relationship between the duty ratio of the applied voltage and time.

FIG. 34 is a partially enlarged view of the thermal head.

FIG. 35 is a diagram for explaining a perforation hole detection method when it is necessary to know the position of a perforation hole as in the case of writing at the writing position shown in FIG. 29.

FIG. 36 is a diagram showing a method for detecting that the film base has reached the glass transition point without using a heating element having one end open.

FIG. 37 is a diagram showing the configuration of the second example of writing.

FIG. 38 is a diagram showing the configuration of the third example of writing.

FIG. 39 is a diagram showing the configuration of the first example of reading.

FIG. 40 shows a detector for reading a digital signal recorded on a film base.

FIG. 41 is a diagram for explaining a color separation filter when the image scanner corresponds to a color image.

42 is a diagram showing a color separation filter A518a and a color separation filter B518b. FIG.

[Fig. 43] Fig. 43 is a diagram for describing switching between the subtractive color filter and the additive color filter.

[Fig. 44] Fig. 44 is a diagram for describing switching between the subtractive color filter and the additive color filter.

FIG. 45 is a diagram showing a configuration of a filter block.

46A is a diagram showing a developed view of a filter block 520, FIG. 46B is a diagram showing complementary color filters, and FIG. 46C is a diagram showing additive color filters.

FIG. 47 is a diagram showing a configuration of a light source capable of varying a color temperature for an image scanner.

FIG. 48 is a diagram showing a circuit for detecting a signal of a photodiode sensor at high speed, high accuracy, and low noise.

FIG. 49 is a diagram showing a position to be recorded by performing a moving average for each 3 × 3 portion.

FIG. 50 is a diagram showing a relationship between a value after calculation and a value before calculation by a moving average.

FIG. 51 is a diagram showing values after calculation by a moving average.

FIG. 52 is a diagram showing a position of a local max.

[Fig. 53] Fig. 53 is a diagram illustrating a manner in which a local max is vertically added in the figure to obtain a distribution.

FIG. 54 is a diagram showing how local max is added in the vertical direction in the figure to obtain a distribution.

55 is a diagram showing the value of the sum of squared deviations shown in FIG. 54.

FIG. 56 is a diagram showing how left and right data at positions indicated by triangles in FIG. 55 are added together.

FIG. 57 is a graph showing the number of diagonal lines corresponding to the position of each of the 15 ranges.

FIG. 58: The pit position in the vertical direction is confirmed and the vertical direction is set to 15
It is the figure displayed by the square of a circle.

FIG. 59 is a diagram in which a portion where the SYNC / SYNC ′ signal is present is read out and is shaded when either portion has a shaded portion.

FIG. 60 is a diagram showing an extracted signal.

FIG. 61 is a diagram showing a configuration of a second example of reading.

FIG. 62 is a diagram showing a detailed configuration of a rotary mirror 610.

FIG. 63 is a diagram showing a configuration of an application example in which the size is further reduced by eliminating the return mirror 611.

FIG. 64 is a diagram showing a configuration of an example in which digital data is recorded on a film after development according to the present invention.

FIG. 65 is a diagram showing an example of a film shape for mounting a reversal film recording digital data on a film mount.

FIG. 66 is a view showing a film mount for fixing the film.

FIG. 67 (a) is a front view of the closed film mount, and FIG. 67 (b) is a rear view of the closed film mount.

FIG. 68 is a diagram showing a state in which the mount is transparent as viewed with infrared light.

FIG. 69 is a view showing an apparatus for detecting the digital data by attaching the film of FIG. 65 to the mount of FIG. 66.

FIG. 70 is a diagram showing a state in which the part with the pin 828 on the lower side of the mount is pulled open by relying on the scribe 820.

FIG. 71 is a diagram showing the configuration of an improved example of one embodiment for recording digital data on a film after development according to the present invention.

FIG. 72 is a flowchart for explaining a “read” operation of the first example.

FIG. 73 is a diagram for explaining a method of canceling noise when decoding digital data from position data.

[Explanation of symbols]

1 ... Thermal head, 2 ... Film, 3 ... Micro heating element,
4 ... Pit, 5 ... Film base, 6 ... Film emulsion section.

[Procedure amendment]

[Submission date] June 7, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction content]

As shown in FIG. 2, the film base 5 having the pits 4 formed thereon is irradiated with a light beam for recording digital data. For example, when the light flux strikes a smooth part of the film base 5 as shown by the light flux B,
As it is, the light is specularly reflected and the light flux proceeds in the regular reflection direction. However, as shown by the luminous flux A, the luminous flux that hits the pit 4 is diffusely reflected and diffused in different directions.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0040

[Correction method] Change

[Correction content]

In this embodiment, several dedicated central processing units (CPU) for recording data are mounted, so timing signals and recordings exchanged by the CPU between the camera body and the back cover are carried out. It is necessary to communicate information such as data to be transmitted.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0060

[Correction method] Change

[Correction content]

In FIG. 23, the power source battery 237 is
Switching transistors 239a, 2 whose on / off is controlled by a signal from the 05 terminal of the CPU 231
38f. The switching transistors 239a and 238f are connected to the noise removing capacitor 241d and also to the common electrode of the 5V three-terminal regulator 236a and the resistors 232 corresponding to the thermal head 1 . Also, 5.2
The V three-terminal regulator 236b is directly connected to the battery. Further, the regulator 236b is connected to the diode 240a through
Each of them is connected to the V _DD terminal of the CPU 231 via 40b.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0110

[Correction method] Change

[Correction content]

FIG. 40 is a diagram showing the structure of a detector for reading the digital signal written on the film base. As shown in FIG. 39 , the light source lens 5 is provided on the optical path of the illumination light from the halogen lamp 508 which is the light source.
10, a mirror 501a is arranged, and the mirror 50
An infrared cut filter 504, a condenser lens 503, and a film 502 are provided on the optical path of the reflected light from 1a. The mirror 501b and the data detection optical system 514 are provided on the optical path of the light transmitted through the film 502.
c, a mirror 501c is provided, and the mirror 501
On the optical path of the light reflected by c, the return mirror 5
11 are arranged. Furthermore, the return mirror 5
On the optical path of the light reflected by 11, the monitor optical system 5
06 and an area sensor 505 are provided.

[Procedure Amendment 5]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 4

[Correction method] Change

[Correction content]

[Figure 4]

[Procedure correction 6]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 11

[Correction method] Change

[Correction content]

FIG. 11

[Procedure Amendment 7]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 21

[Correction method] Change

[Correction content]

FIG. 21

[Procedure Amendment 8]

[Document name to be corrected] Drawing

[Correction target item name] Fig. 23

[Correction method] Change

[Correction content]

FIG. 23

[Procedure Amendment 9]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 32

[Correction method] Change

[Correction content]

FIG. 32

[Procedure Amendment 10]

[Document name to be corrected] Drawing

[Correction target item name] Fig. 41

[Correction method] Change

[Correction content]

FIG. 41

Claims (2)

[Claims] 1. An apparatus using a photographic film made of a film base such as a resin, wherein a minute heat generating means that is in close contact with the photographic film arranged in a traveling path of the film optically moves the photographic film to a predetermined position on the surface of the photographic film. A data recording device of a device for recording predetermined information by forming reproducible minute unevenness on the surface. 2. A light projecting means for projecting light onto a recording portion on the surface of a photographic film on which information is recorded by minute irregularities, and a light receiving means provided at a position for receiving reflected light from the film of the projected light. A data reproducing device for reading the predetermined information by detecting scattered light of reflected light due to unevenness provided on the surface of the film by the light receiving means.