JPH02297537A - Sound reproduer - Google Patents

Abstract

PURPOSE:To easily and accurately reproduce a sound corresponding to a photographed frame by retrieving a recording area in a sound recording medium corresponding to a read code by the use of a retrieving means and reproducing sound data in the retrieved recording area by the use of a reproducing means. CONSTITUTION:The sound reproducer is provided with the recording medium 8 where the sound data corresponding to the photographed frame is recorded in each recording area, a reading means 73 which uses a print where the code showing each sound recording area is formed corresponding to every photographed frame so as to read the code of the print, the retrieving means 74 and 78 for retrieving the recording area in the recording medium 8 corresponding to the read code and the reproducing means for reproducing the sound data corresponding to the retrieved recording area. Thus, the sound data corresponding to the photographed frame is easily retrieved and reproduced, and the retrieval is easily performed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an audio reproducing device capable of reproducing audio corresponding to an audio recording medium and prints corresponding to photographic frames.

C. Prior Art] If a camera using an ordinary silver halide film is used to take a photograph and at the same time a chime recorder or the like is used to record audio, the photographed frame and the audio data will be separated.

Therefore, in order to reproduce the audio data corresponding to the photographed scene, the photographed frames and the audio must be associated in some way.

Conventional devices that can reproduce audio corresponding to photographed frames include, for example, a device that records audio data etc. in a semiconductor memory provided on a projection film and can reproduce the audio (Japanese Patent Application Laid-open No. 62-129839), a slide mount with a semiconductor memory that can record audio data, etc. (Japanese Patent Application Laid-open No. 61-113048), a magnetic material is attached to the back of the print so that audio can be recorded. (Utility Model Application Publication No. 63-165647), etc.

However, none of the above-mentioned publications discloses the addition of information for associating film frames with audio data stored in a semiconductor memory or the like.

There are also cameras that are equipped with an IC card as a recording medium and record photographic information on this (for example, Japanese Patent Laid-Open No. 62-20
In this camera, when shooting information is recorded on an IC card, a mark (a number corresponding to the frame number taken) is imprinted on the film to indicate that the shooting information has been recorded, but the audio is not recorded. It is not something that will be done.

[Problems to be Solved by the Invention] Incidentally, recording audio requires a considerable recording capacity as a recording means, and the memory loaded on the film or in the film cartridge does not necessarily have sufficient capacity. This will require memory for In this case, the audio memory and the film are separate. Therefore, if you do not have the information to make the correspondence between the photographed frame and the audio as described above, it will be difficult to understand the correspondence between the photographed frame and the recorded audio, which will take time and effort, and when playing back the audio. Also, when copying this audio to a medium, errors may occur because it cannot be matched with the photograph taken.

In addition, the above-mentioned Japanese Patent Application Laid-open No. 62-129839 and No. 61-
In the device shown in Japanese Patent No. 113048, the audio recording medium and the image recording medium are attached on a one-to-one basis, resulting in a large size and high cost.

The present invention has been made in view of the above-mentioned problems, and it clarifies the correspondence between photographed frames and unrecorded audio, eliminates the trouble of searching during playback, and makes it easy to generate audio corresponding to photographed frames. To provide an audio reproducing device which can reproduce accurately, has a small recording medium size and is low cost.

[Means for Solving the Problems] In order to achieve the above object, the audio reproducer of the present invention has a plurality of recording areas, and audio data corresponding to a photographic frame is recorded in each of the recording areas. A reading means for reading the code of the print, and a print that corresponds to the code read by the reading means, using a recording medium in which a code indicating each of the above-mentioned audio recording areas is formed corresponding to each photographed frame. The apparatus includes a search means for searching a recording area in the recording medium, and a reproduction means for reproducing audio data corresponding to the recording area searched by the search means.

Note that the print may include a code for a slide film, and in the case of a slide film, a slide projector may be used that plays back audio while projecting an image.

In the following embodiments, the recording medium is an audio card or a magnetic disk, and the search means for searching the recording area is a microcomputer or a magnetic head drive unit.

[Function] According to this audio reproducing device, the code on the print is read by the reading means, the recording area in the audio recording medium corresponding to the read code is searched by the search means, and the searched record is searched. The audio data of the area is reproduced by the reproduction means.

[Effects of the Invention] According to the present invention, compared to recording audio separately using a tape recorder or the like, audio data corresponding to a photographed frame can be easily searched and played back, which saves time and effort in searching, etc. It's convenient and doesn't cost much. In addition, compared to the conventional method in which the audio recording medium is attached one-to-one to the image recording medium, since the audio data is recorded separately, an inexpensive audio recording medium can be used without changing the size of the film frame. be able to. Further, as in the above-mentioned Japanese Utility Model Publication No. 63-165647, there is no need to create an audio recording section at the same time as the glint is created, and there are no restrictions on the creation process.

(Hereafter, margin) :Example] An embodiment of the present invention will be described below with reference to the drawings.

First, the external configuration of the camera according to this embodiment will be explained using FIGS. 1 to 3. The camera body 1 has a photographic lens section 2, an audio input microphone 3, a flash 4, and a finder 5 on the front, and a speaker 6 for audio reproduction and a recording/playback mode switch 7 on the back. A card holder 9 that can be opened and closed into which an audio card 8 is inserted and an eject lever 10 for opening the holder 9 are provided on the side, and a shutter release button 11, a recording timing setting button 12, a recording time setting button 13 and a recording time setting button 13 are provided on the top surface. A voice release button 14 and an LCD 15 for displaying various information are provided.

Each press of the recording timing setting button 12 switches between manual recording mode and shutter release (lffl shadow).
Pre-release recording mode that automatically records the sound just before the shutter release (this is called recording timing 1), Pre-release recording mode that automatically records the sound before and after the shutter release (this is called recording timing 2), and a post-release recording mode (this is referred to as recording timing 3) in which automatic recording is performed immediately after the shutter release is sequentially switched and set. Note that the manual recording is a mode in which recording is performed from when the audio release button 14 is pressed until a set time has elapsed or until the same button 14 is pressed again.

Each time the recording time setting button 13 is pressed, the recording time is set to 0.
The settings are changed in the following order: seconds (no recording), 10 seconds, 20 seconds, and 40 seconds (all of which are the times per frame of photography).

To explain the relationship between the memory capacity of the audio card 8, recording time, and sound quality, recording is done by sampling in relation to the memory capacity, but in general, in order to reproduce the sounds of musical instruments without inferiority, 16 KHz is recommended. With the sampling of ADPCM (Adaptive Different
ntial P1se Code Module
ation) system requires approximately 4-bit encoding. In this case, for 10 seconds per photographing frame, a memory capacity of 16 KHz x 4 x 10 seconds = 640 bits = 80 bytes is required. At this time, by setting the sampling frequency to 8 KHz, a recording time of 20 seconds can be obtained with the same memory capacity, and by further setting the sampling frequency to 4 KHz, a recording time of 40 seconds can be obtained. Note that 8KHz sampling makes it difficult to reproduce the high tones of the human voice, but it can be used when high sound quality is not particularly required. 4K
Although the sound quality is inferior with Hz sampling, it can be used for audio recording of meetings, lectures, etc.

The audio release button 14 is a button that starts recording. During manual recording, pressing it again stops recording, and when in playback mode, it becomes a button that starts playback. Although not shown in FIGS. 1 to 3, a silver halide film is loaded inside the body to take an optical image of a subject that is incident through the photographic lens section 2, and the camera body 1 is equipped with a camera. A button is provided for selecting and setting a frame when reproducing the audio recorded with the own tAf.

Next, the display mode of the LCD 15 will be explained using FIG. 4.

In the same figure (a), rON J on the LCD 15 displays the ON state of the main switch, which will be described later, and
d" indicates that the mode with audio recording is set, and if this display disappears, it means that the mode 2 without audio recording is set. rlos 20
5403J indicates the audio recording time, "-" indicates the audio recording timing, "mouth" indicates the shooting timing, and numbers and schematic diagrams indicate the film counter and film feeding status. Also, r IO820S 40
3 The J display blinks during recording and playback.

Figure 4(b) shows that a mode is set that allows 20 seconds of recording with the front and rear mounts across the release.
Figure (C) shows that the mode that allows 40 seconds of manual recording is set, and Figure (d) shows that the mode that allows 10 seconds of recording before release is set. Figure (e) shows that a mode in which audio recording is not possible is set.

Next, the circuit block configuration of the camera will be explained using FIG. 5.

A microcomputer μC controls the entire camera according to operating procedures shown in a flowchart described later. The photometry section LM measures the brightness of the subject. The autofocus unit AP measures the distance to the subject. Exposure control section EC
controls the aperture and shutter speed based on the Tv value and Av value calculated by the microcomputer μC. Lens control unit LC
The flash control section FC controls the driving of the lens based on the distance measurement data, and the flash control section FC controls the light emission of the flash based on the photometry data. The film feeding control section PL controls the feeding of the film. Each of these sections inputs and outputs data to and from the microcomputer μC. The exposure information input section EI inputs information (for example, film sensitivity information, etc.) indicated by the Dx code of the film, etc. to the microcomputer μC.

The display section DS is driven by the output of the microcomputer μC and is
Various information is displayed on CD15 etc. The power supply control section PC receives the output from the microcomputer μC and controls the power supply of each section. The imprinting circuit unit IP receives the output from the microcomputer μC and records, as will be described later, information corresponding to the audio data on the film, that is, imprints it. The light-shielding plate driving plunger MG drives the light-shielding plate that is inserted into the front of the part of the film where the above-mentioned imprint is to be made during photographing in order to block the light that has passed through the photographic lens system. Output is provided through buffer B. The audio circuit section SD is controlled by the microcomputer μC, converts input audio into electrical signals, temporarily stores audio data,
It also has a playback function. The audio card CHD is for storing (recording) audio data through data communication with the microcomputer μC.

The switches that input signals to the microcomputer μC include the main switch SO1, the metering start switch S1, the release switch S2 for shooting, and the recording/playback switch S3.
(switch 7 in Figure 2), recording timing switch S4 (button 12 in Figure 3), recording time switch S5 (button 13 in Figure 3), audio release switch S
6 (button 14 in Figure 3), audio card installation switch S
7, an audio playback frame selection switch 88, etc.

Next, Figure 6(a)(b) shows the operation of the microcomputer μC.
Explain using. When the main switch SO is turned ON (#2) in the standby state (#1), the state of the photometry start switch S1 is checked (#3), and if the same switch S1 is OFF, the state of the audio card installation switch S7 is checked. Check (#4)
, When the audio card is installed, 87 is turned OFF and the empty area information etc. of the card is read (#5).Next, check the state of the recording/playback selector switch S3 to determine the setting mode #6), If S3 is OFF, the process advances to the recording mode from #7 onwards, and when it is ON, the process advances to the playback mode from #24 onwards.

In recording mode, please stop playback if it is currently playing #7)
, check whether the recording timing changeover switch S4 has been changed ($8), and if this is YES, change the audio recording timing settings in the order described above (#9), then NO
If so, do not change the recording time selector switch S5.
Check whether the audio recording time has been switched (#10). If YES, do not change the audio recording time settings in the order described above (#11). If NO, do not change and the recording timing mode is set to automatic recording. Check the mode (#1
2).

As a result of this determination, if automatic recording mode is set,
The microcomputer μC checks whether a recording start signal is output from the audio circuit SD (#13), and if it is YES, it proceeds to #17 and checks whether there is a data recording area, that is, it is read in the previous #5. Based on the card information, it is determined whether there is free space in the card's memory.

If there is an empty area, recording is started (#181, display this on the display section DS. #19), and if there is no empty area, that effect is displayed on the display section SD (#19).

Recording in steps #18 and below is performed by storing the audio in the semiconductor memory (described later) of the audio circuit section SD. Simultaneously with the start of recording, the microcomputer μC starts outputting signals such as a clock to the audio circuit SD, and also starts a recording time timer within the microcomputer μC. After #19, check whether the recording/playback timer has overflowed (#20), and if it has not overflowed, return to #2 above; on the other hand, if it has overflowed, end recording/playback and start recording/playback. After stopping playback and recording on the audio card (#21), return to #2 above,
The same operation is repeated below.

As a result of the determination in #12, if the automatic recording mode is not set or if the recording start signal is not output in #13 even if the automatic recording mode is in the automatic recording mode, proceed to #14 and press the audio release switch S6. The state is checked (#14). Here, when the audio release button 14 is pressed and the audio release switch S6 is closed, it is checked whether the mode is manual recording mode (#15), and if it is not manual recording mode,
In other words, if it is automatic recording mode, the process moves to #17 described above, whereas if it is manual recording mode, it is checked whether recording is in progress (#16), and if it is not.

Proceed to #17. On the other hand, if recording is in progress, stop recording (
#22>, I want to do it once in manual recording mode,
Recording starts when the audio release button 14 is pressed, and stops when it is pressed a second time.

After stopping the recording in #22, the audio is recorded on the audio card (#23), and then the process proceeds to #19.

When executing the playback mode with the recording/playback switch S3 ON in #6 above, if recording is in progress, stop recording (#24) and check the state of the audio release switch S6 (
#25), if the switch S6 is turned on, check whether it is being played (#26), and if it is not playing, start playing #27), proceed to #19, when starting playback, the audio circuit section SD Start the playback timer by outputting a signal to.

On the other hand, if it is playing, the audio release switch S6 is turned on for the second time, so the playback should be stopped. #28), #1
Proceed to 9.

Incidentally, if the state of the card installation switch S7 indicates that the card is not installed in #4 (37 is ON), the recording/playback is stopped (#29), and then the process proceeds to #19. Also, #14 or #2
If the audio release switch S6 is not turned on in step 5 (that is, when the switch S6 is kept in the OFF or ON state), the process immediately proceeds to #19.

When the metering start switch S1 is turned on in #3 above, metering (#30), distance measurement (#31), input of shooting information such as film DX code (#32), exposure calculation (#33),
Each step of flash charging (#34) and display (#35) is executed, and the process returns to #2 and repeats the same steps until the release switch S2 is turned on (until YES in #36).

When the release switch S2 is turned on, the recording is stopped if it is being recorded (#37 in Fig. 6(b)), and the above-mentioned photometry, a.
The lens is driven for focusing based on the data obtained from the distance etc. (#38), and then the sound is turned off, i.e.
Check whether the mode is not recording, no audio card is inserted, or no empty area on the audio card (#39). If the audio is not OFF, check whether the audio data storage area on the film is Before imprinting the compatibility information (code, etc.), turn on the magnet MG and drive the aforementioned light shielding plate (#40), then imprint the compatibility information (#41), and then set the appropriate aperture and shutter. - After performing the exposure at the tip speed (#42), the film is wound (#43). On the other hand, if the audio is OFF, the process proceeds to #43 without processing #41 and #42 above.

Next, it is checked whether it is the recording timing 1 of the pre-release recording (#44), and if YES, the data stored in the semiconductor memory as described above is recorded on the audio card 8, and the C#
45>, return to #2. On the other hand, recording timing 1 at #44
If not, check whether it is recording timing 2 of pre-release recording (#46), and if YES, check whether precursor recording is in progress or whether recording has already been completed (#47).
), if the precursor recording is in progress, press the release switch during the precursor recording.
Since ychi S2 is turned on, the recording of the precursor is stopped at this time, and the audio data stored in the semiconductor memory is recorded on the audio card 8 (#48).

Even when it is determined that recording has been completed in #47, recording has been made before release, so process #48.
-Start recording after recording (#49).

Also, even when the precursor recording is not in progress or the recording has not been completed, the recording after the release is started (#49).

If recording timing is not 2 in #46, check whether it is recording timing 3 for post-release recording (#50),
If YES, the steps from #47 onwards are executed. After #49 and when recording timing 3 is not reached in #50, the process returns to #2 and repeats the same operation.

Next, the specific configuration of the audio circuit section SD will be explained using FIG. 7.

In each block of the circuit, PWRI is a power supply circuit for the analog portion of the audio input, and receives a recording preparation signal RDYrON10FF from the microcomputer μC. PWR2 is a power supply circuit for the sample hold circuit SH, AD conversion circuit AD, and other digital parts. MIC is an audio input microphone, AMPL, 2 is an amplifier circuit, LPFl, 2 is a filter circuit, SH is a sample hold circuit, AD is AD
The conversion circuit, CD, is a circuit that compresses and codes the AD-converted audio signal for storage, MC is a control circuit for storing the coded signal in memory, and PM is a semiconductor memory for storing audio codes. .

10 is an interface for data communication between the memory PM and the microcomputer μC. CNT is an address counter for the memo 92M, EN is a circuit for expanding a coded signal, DA is a DA conversion circuit, SP is a speaker, and TC is a clock and timing control circuit. CMP is a comparator that outputs a signal when the audio input level becomes higher than the reference level when automatic recording mode is set, causing a transition to automatic recording. Ll is a signal latch circuit.

DATA is a data communication pass line (called DATA bus) between the microcomputer and memory, REC is a recording start signal when automatic recording starts, RESET is a reset signal for each circuit,
5TART is a manual start signal for recording or playback, RDY is a recording preparation signal, R/PB is a recording/playback mode switching signal, φ1 is a clock, MODEI, 2 is a recording time mode selection signal (10 seconds/wq, 20 seconds/frame , 40 seconds/
R/W is a data communication direction switching signal between memory PM and microcomputer μC, 5TOP is a recording pause signal, and SEL is memory P as a data communication destination for microcomputer μC.
This is a select signal specifying M.

The recording operation of the audio circuit section SD will be explained below.

(1) The power supply circuit PWRI is turned on by the RDY signal, and the audio input circuit starts operating.

(2) During automatic recording, audio level (filter circuit LPFI
When the output of
outputs number 18. This signal is sent to the signal latch circuit L1 via the OR gate and is cleared.

(3) The output of the signal latch circuit L1 is sent as a REC signal to the microcomputer μC, notifying the microcomputer μC that recording has started. At the same time, the power supply circuit PWR
2 to turn on the rest of the audio circuit.

(4) During manual recording, the latch circuit L1 is reset by the RESET signal, so the comparator CM
Recording does not start even if a signal is output from P. When the camera's audio release switch is turned on, the microcontroller μ
5TART signal is output from C and RE S E
By stopping the T e, it enters the recording state.

(5) Upon knowing that the recording state has been entered, the microcomputer μC outputs the clock φ1.

(6) The sample hold time changes depending on the combination of MODEL and 2 signals. Therefore MODE 1.

For example, 16KHz, 8KHz, 4KHz by 2 signals
By changing the sample time, it is possible to change the sound quality and recording time.

(7) The sampled and held signal is converted into an 8-bit digital signal in response to a signal from the control circuit TC.

(8) Further, the 8-bit signal is compressed by the compression circuit CD in response to a timing signal from the control circuit TC.

Generally, it is compressed into a digital signal of about 4 bits using the ADPCM method.

(9) The compressed signal is recorded in the memory PM under timing control by the control circuit MC.

Note that the recorded address is the address counter CNT.
specified by.

(10) The address counter CNT counts up in response to a signal from the control circuit TC, and when it overflows, returns to the initial value and counts up again. Therefore, when the memory PM overflows, the oldest data is updated first.

(11) When it is desired to interrupt the recording once due to release, etc., send the S T OP @ signal to the control circuit TC.

Then, the timing signals and clocks sent to each part are interrupted, and recording is interrupted. If the output of the s'r op signal is stopped, the zero tone is resumed from the state immediately before interruption.

(12) When the recording of a certain frame is completed, the data in the memory PM is stored in the audio card via the interface 10 and the microcomputer μC.

(13) To transmit data from the memory PM to the microcomputer μC, the microcomputer μC first outputs a SEL signal, and the R/W signal instructs the microcomputer μC to transmit data.

(14) When the microcomputer μC sends the clock φ1, the data at the address according to the contents of the address counter CNT is sent to the DATA bus. Address counter CNT
Since it stops when recording stops, if you continue counting up, you can send out the oldest data in order.

(15) When a predetermined amount of data is sent, the microcomputer μ
C stops outputting clocks, etc., outputs a RESET signal, and resets the entire audio circuit.

Next, the playback operation will be explained.

(1) It is assumed that data is received from the microcomputer μC by outputting the SEL signal and R/W signal from the microcomputer μC.

(2) The microcomputer μC outputs the received audio data from the audio card or the like onto the DATA bus, and also records it in the memory PM by outputting the clock φ1.

(3) Since the address counter CNT has been reset in advance, the audio data is sequentially input from a predetermined address in the memory PM.

(4) When the data transmission is completed, the MODEL, 2 and R/PB signals corresponding to the data sent from the microcomputer μC are switched to the reproduction side. The SEL signal and R/W signal are reset.

(5) When the clock Φ1 is output, data is sent from the memory PM to the expansion circuit EN at around j via the control circuit MC.

(6) The decompression circuit EN restores the compressed data to its original state, and then converts it into an analog signal in the DA circuit. The analog conversion timing is determined by MODEl,2.

(7) Via filter LPF2 and amplifier circuit AMP2,
It is output as audio from speaker SP.

Next, the code imprinting device that processes #41 (FIG. 6(b)) will be described with reference to FIGS. 8 and 9.

This imprinting device 20 is in recording mode and when the release button 11 is pressed (release switch S2
9-line imprinting, in which information corresponding to the audio data (such as the memory address on the audio card for the audio data) is imprinted using a bar code, etc. from the back side of the film at the same time that the camera is shooting. The device 20 includes a light source 23a and a diffuser plate 23b provided on a substrate 22 disposed on the back side of the film 21 in the back M1' of the camera body, and an imprint display using a liquid crystal etc. provided in the imprint optical path P. 24, a lens 25, a reflecting mirror 26, and a movable light shielding plate 27 provided on the front side of the film 21.

As shown in FIG. 9, the movable light-shielding plate 27 is provided so as to be able to protrude and retract from the image frame 28 by a guide 29, and is engaged with one end of an actuating lever 30 that is biased by a spring 31. Under normal conditions, the light shielding plate 27 is out of the picture frame 28 as shown by the dashed line. In addition, the same operating lever 3
The first plunger shaft 33 of the plunger 32 is engaged with the other end of the plunger 32, and when the first plunger 32 is turned on, the first plunger shaft 33 moves to the left in the figure against the biasing force of the spring 31, and the operating lever 30 rotates counterclockwise, and the light shielding plate 27 enters the picture frame 27 as shown by the solid line.

Regarding the operation of the imprinting device 20, when the release button 11 is pressed, the light source 23a lights up, and the barcode is displayed on the imprinting display section 24 by the light as will be described later (FIGS. 10 and 11). LCD display is lens 25,
The image is imprinted onto the film 27 from the back side through the reflecting mirror 26. Since this barcode needs to be clearly imprinted so that it can be read later, a movable light-shielding plate 27 is inserted in front of the imprinting position on the film 21 prior to the start of the shutter opening operation during photographing. Blocks light passing through the photographic lens system. At the same time as the photographing ends, the movable light shielding plate 27 is retracted to a predetermined position. The imprint display section 24, light source 23a, etc. are controlled by the imprint circuit section IP shown in FIG. Furthermore, the imprint display section 24 may use a device such as an LED instead of an LCD (liquid crystal).

The imprint segment pattern of the imprint display section 24 will be explained using FIGS. 10(a) and 10(b), and the film on which the code is imprinted will be explained using FIG. 11.

To explain the case where the imprint display section 24 is currently an LCD"'c'#4, the LCD does not transmit light when no electric signal is applied (negative type), and when an electric signal is applied, the LCD does not transmit light as shown in FIG. (The shaded area shown in a>(b) becomes transparent and allows light to pass through. In this example, the segment pattern consists of a clock string and a code string, and each segment of the code string is arranged in a direction that is smaller than that of the clock string. The code string in the display example shown in <b> of the same figure is rtot.
.

10100J, the first 2 bits indicate the card number, the next 2 bits indicate the number of times the voice card has been cleared, and the last 5 bits indicate the address where the voice data on the voice card is recorded.In the above example, the segment pattern is evenly spaced. Although shown in line, a start bit and an end bit may be provided to reduce reading errors.
As shown in the figure, the code is imprinted on one corner of the photographic frame (the upper left corner in the example of FIG. 11). The code imprinted on the film in Figure 11 is rolololooo.
The case of oJ and rololool 11 is shown.

Next, the audio card 8 and the audio card 8 mounting part on the camera side are shown in FIGS. 12, 13, and 14 (a) and (b).
Explain using.

As shown in FIG. 12, eight card terminals 41 are arranged on the surface of the audio card 8, and as shown in FIG. It consists of a contact 42, a card mounting switch 43, and a flexible substrate 44 on which these are provided. When the audio card 8 is installed in the camera, as shown in FIG.
As shown in the same figure (b), push and move the card at the edge of the OF
F. As a result, a signal indicating that the audio card 8 has been installed is input to the camera side.

Next, the electrical configuration of the audio card 8 will be explained using FIG. 15.

The audio card 8 has a built-in microcomputer 51, and this microcomputer 51 has a RAM 52 and an E2 for temporary storage of data.
It has built-in PROM53. The RAM 52 temporarily stores data corresponding to one photographed frame, and the E2PROM 53 collectively records the data stored in the RAM 52.

In addition, ■DD, GND are the power terminals of the audio card, SCK
is a serial clock terminal, SW is a serial data input terminal, SR is a serial data output terminal, R3T is a reset signal input terminal for the microcomputer 51, C9 is a select signal input terminal to enable serial communication of the audio card, φ2 is a clock terminal. be.

The memory map of the audio card memory (E2FROM) is shown in FIG. The memory has a data area and a card information area, and the card number, number of clears, empty area code, address of each piece, and characteristic data of each piece are recorded in the card information area.

This characteristic data is information necessary to reproduce recorded data, such as recording sample frequency. By the way, the barcode information imprinted on the film (
The designated signal) is the card number, as shown in Figure 10.
Consists of number of clears and address, printed (photo)
recorded in

If the address where the audio data in the audio card is stored corresponds to the printed code, the audio can be retrieved without error by reading the printed code. However, due to capacity limitations, only one film's worth of data can be recorded on an audio card. The reason for this is as follows. The number of bits of audio data per frame is ADPC at 16 KHz sampling.
M format 4-bit encoding, 10 seconds of recording, 16
K x 4 x 10 = 640 bits, 24 pieces, 640 K x 24 = 15
M bits are required. Cards that can record the audio data of multiple films would be expensive and impractical;
Furthermore, it is a burden for the user to prepare a number of cards, so one card is used over and over again.

For this reason, if the card number and number of clears are not stored in the audio card, there will be prints with the same barcode added to each film, causing confusion. , if multiple equinox data from an audio card are recorded all at once on a memory such as a magnetic disk, the audio with the same code from another film may be erroneously played back, or the audio recorded on another card may be played back. There is a possibility that it will be done. Therefore, as mentioned above, each audio card has a different card number, and the film 1
The number of clears is updated every time the mission is taken, and is recorded on the film and added to the prints.

Next, the operation of the microcomputer 51 in the audio card will be explained according to the flowchart shown in FIG.

In the standby state (#51), when the select signal C8 is input from the camera side microcomputer μC (YES in #52)
, the card is removed from the standby state, and the microcontroller μC first sends command data to specify the card's functions via serial communication (#53). This command is used to read card information, record data, read data, Any of the clear commands. Next, the command data is sequentially judged (#54, 58, 68, 73), and if the command is a card information command (YES in #54), the card information in the memory E2PROM 53 (memory) of the voice card is stored. Please specify the area #55), E2
The data is transferred from the PROM 53 to the temporary storage RAM 52 (#56), the data in the RAM 52 is transmitted to the microcomputer μC via serial communication, and the process returns to the standby state.

If the command is a data recording command (YES in #58)
S), specify the card information area of E2PROM53#
59), Move data from E2PROM 53 to RAM 52 #60), Check the empty area for audio data from the empty area code and specify the area to record (#61),
Next, data is serially transferred from the microcontroller μC to RAM5.
2) and input this RAM data to E”P'R
Record to OM53 (#63), furthermore, microcomputer μC
Input the data characteristics and store them in the RAM 52 (#64
), then stores the address corresponding to the address of the empty area code in the RAM 52 as a disconnection area code (#65), further specifies the card information area, and stores the address corresponding to the address of the empty area code in the RAM 52 (#65).
Record the data of AM52 in the card information area of E2PROM53 (#67) and return.

If the command is a data read command (YES in #68)
S), input the data area code serially from the microcontroller μC #69), and use the B2PROM5 based on this code.
Please specify the data area of 3 #70), B2PROM5
Move the data of 3 to RAM52 (#71), RAM
Send data serially to microcontroller μC #72),
Return.

If the command is a clear command (YES in #73)
To reset or update the voice card information, specify the card information area of the B2PROM 53 #74
), move the data of B2PROM53 to RAM52#
75), In order to make the entire audio data recording area usable, please preset the empty area code $76), then add "1" to the card clear count and input it into the RAM 52.
77), record this RAM data to B2PROM 53 #78), and return.

Next, the information input operation of a device such as a camera or a regenerator (described later) that inputs card information by communicating with the audio card will be explained with reference to FIG. Microcomputer μC
should output clock φ2 and select signal CS #101
．． 102), further send a card information input command #103), and after waiting for time for command judgment and data preparation on the card side (#1.04), read the card information to input it via serial communication>( #105), then reset clock φ2 and select signal C8 (#1
06), if the communicating device is a camera, an imprint code is set from the read card information (empty area, card number, number of clears) (#107).

A routine for recording audio data will be explained with reference to FIG. Similarly to the above, after the clock φ2 and the select signal C3 are output (#111, 112), the audio data recording command is transmitted (#113), and after waiting for a time (#11
4), Output audio data #11>, B2PROM
t&(#116) to wait for writing time to B2PROM53, similarly output the characteristic data (#117), and write to B2PROM53.
After waiting for the write time (8118), the clock φ2 and the select signal C8 are reset (#119) Next, the routine for reading audio data will be explained with reference to FIG. Similarly to the above, the clock φ2, the select signal CS is outputted #121, 122), the audio data read command is transmitted #123), and after waiting for a time (#12)
4) Send the data area code #125>, wait f&(#126), input audio data to the device #127), reset the clock φ2 and select signal C8 (#128).

Next, the audio reproducer will be explained with reference to FIG. 21. This audio reproducing device 61 includes a recorded audio card 8 or a magnetic disk 63 on which data of the audio card is recorded, and a film print (coded) 62.
This is for playing back audio corresponding to the image of the photographed frame of the print. The audio player 61 is equipped with an audio card mounting section 64, a print mounting section 65, a magnetic disk mounting section 66, a speaker 67, a micro 8, a playback switch 9, a playback repeat switch 70, a copy switch 71, and a recording switch 72. . The audio card mounting section 64 has the above-mentioned devices shown in FIGS.
), and the print mounting section 65 is provided with a print code reading section 73. The copy switch 71 is for operating the function of transferring audio data from the audio card 8 to the magnetic disk 63, and the recording switch 72 is for transferring audio data directly from the micro 8 to the magnetic disk 63 during after-recording.
This is for recording to 3.

When the above-mentioned audio player 61 is equipped with the print 62,
The barcode is read by the print code reader 73, and by pressing the playback switch 69, the corresponding audio is read and played back from the recorded magnetic disk 63. It is also possible to play directly from the audio card 8. In addition, so that there is no need to drive the magnetic disk 63 each time the playback is performed, the audio for one print is transferred from the disk 63 to the semiconductor memory (
Once stored in the audio player 61 (built-in to the audio player 61), it is possible to play back from the semiconductor memory by repeatedly pressing the switch 70.

The memory storage configuration of the magnetic disk 63 is shown in FIG.

The index information area is provided with an index information area on the outer periphery, and audio data areas 1.2...n are provided on the inner periphery from the outside to the inside. Data corresponding to the card information area of the memory is recorded, data of the data area is recorded in the audio data areas 1, 2, . . . n, and data for multiple autumnal equinoxes of the audio card can be recorded respectively.

A specific example of the print code reading section 73 and coded print in the audio player 61 is shown in FIGS. 23 and 24.

The print code reading section 73 is connected to the microcomputer 7 of the audio player.
4, a photocoupler (consisting of an LED and a phototransistor) PCI, PO2, and comparators 75 and 76. Photocoupler PCI.

Code part 77 of print 62 with light from PO2 LED
When the reflected light is received by the phototransistor,
The same transistor is ONL, the level on the emitter side rises,
Comparators 75 and 76 are inverted and a detection output is obtained on line Nl,j2.

By reading this output with the microcomputer 74, the code can be known. As shown in FIG.
A photocoupler Pct is provided for reading the clock of line j1.7, and a photocoupler PC2 is provided for reading the code. j
2, an output as shown in FIG. 25 is obtained. The microcomputer 74 inputs 12 outputs when the 11 outputs fall.

The configuration of the code reading section 73 is not limited to the above embodiment, and the photocoupler side may be moved, and the number of photocouplers is not limited to two pairs as described above, but the number corresponds to each bit of the barcode. Alternatively, a COD may be used instead of a photocoupler.

The circuit block of the audio regenerator 61 is shown in FIG. 26. The audio regenerator 61 includes a microcomputer 74 that communicates with the installed audio card 8, a print code reader 73 that inputs signals to the microcomputer 74, and various switches 69 to 72, magnetic head drive unit 78, attached magnetic disk 63 and microcomputer 7
4 and an audio circuit section 81.

The operation of the microcomputer 74 of the audio reproducer 61 will be explained below with reference to the flowchart of FIG.

A print 62, a magnetic disk 63, and an audio card 8 are attached to an audio player 61. When the print 62 is attached, the print code is read by the print code reading section 73 and inputted to the microcomputer 74 (#201>, and then the signal input from the playback switch 69, the recording switch 72, and the copy switch 71 is sequentially checked ( #202, #203
, #204). Now, when the recording switch 72 or the copy switch 71 is pressed, the process proceeds to steps #2o5 and subsequent steps.In #205, index information is input from the magnetic disk 63. This index information includes the card number,
These are the number of clears, piece address, and characteristic data. At this point, if no data has been recorded on the magnetic disk 63 yet, no input is made here.8Next, there is data corresponding to the print code read earlier in the index information. Determine whether (#20
6) In the case of the magnetic disk 63 on which no index information has been recorded yet, and in the case where there is no identical code, the determination here is NO, and a search is performed to see if there is an empty area that can be newly recorded (#207, 208), if there is an empty area, set the data in the card information area of the audio card 8 #209), and record this on the magnetic disk as index information (#210).

After that, move the magnetic head to the corresponding audio data area based on the print code and index information (#211)
Next, it is determined whether to record or copy (#212), and if it is a copy, the audio data in the data area of the audio card 8 is input to the semiconductor memory #213>, and the magnetic disk 6
3 (#215) and return. On the other hand, for recording, input the audio from the micro 8 to the semiconductor memory (#214) and proceed to #215 above.
If there is no empty area, a warning is given (#216) and the process returns. Also, when data is already recorded on the magnetic disk 63, the microcomputer 74 registers the disk 63 with #205.
3 is read, and if in #206 there is data corresponding to a print code that has been read in advance, the process proceeds to #211 without executing #207 to #210.

When the playback switch 69 is pressed, the process proceeds to the steps after #217, where the index information is first entered as described above (#217), and then it is determined whether there is a code corresponding to the print code (#217). 218), if there is the same code, move the magnetic head to the corresponding data area of the magnetic disk 63 #219), read the data and record it in the semiconductor memory #220), then perform playback (#221); After that, if the switch 70 is repeatedly pressed (YES in #222), playback is performed again, and after the playback is finished, if no switch is operated, the magnetic head is returned to the initial position, which is the index information area #2
23), return.

Also, if there is no same code in #218, warn (#2
24), return. Also, after #201 above, if no switch is operated, #204 to #222
Proceed to.

Next, a configuration example of the circuit blocks of the signal processing section 80 and the audio circuit section 81 in the audio reproducing device 61 will be explained based on FIG. 28.

The signal processing section 80 includes a pre-emphasis and de-emphasis circuit, an FM modulation and FM demodulation circuit, a multiplexer 3, a magnetic head, etc., and an audio circuit section 81 includes a speaker 67, a micro 8, a memory 1.2, a multiplexer 1, etc.
, 2, etc., all of which are operated by control signals from the microcomputer 74.

In this circuit block, index information is recorded as follows.

■Multiplexers 1, 2, and 3 are c and f, respectively.

Switch to h side.

■Move the magnetic head to the index information area.

■Write index information to memory 2 using data from audio memory.

■After processing the data in memory 2 using a D/A circuit,
Record on a magnetic disk using a magnetic head.

Further, index information is read as follows.

■Switch multiplexers 1 and 3 to contacts d and g.

■Move the magnetic head to the index information area.

■ Read the data on the magnetic disk with the magnetic head,
/D conversion and stored in memory 2.

■Switch multiplexer l to contact C@.

■Read data in memory 2 via I10 interface ■10.

Also, recording is performed as follows.

■Multiplexers 1, 2, and 3 are connected to contact a.

Switch to f and h sides.

■The signal obtained from the micro 8 through the amplifier 2 and filter 2 is digitized by the A/D converter A/D 1.

(2) Temporarily store the digitized audio signal in the memory 2.

(2) The audio digital signal in the memory 2 is converted into an analog signal by the D/A 2. Here, the reason why D/A conversion is performed again after A/D conversion is to perform time compression. A/D conversion is performed every normal audio sampling period.If D/A conversion is performed at a frequency of 10fi, for example, the analog signal after D/A conversion will be 10 times the analog signal before A/D conversion. This means that it has been compressed twice.

(2) The D/A converted signal is processed through circuits such as pre-emphasis and FM modulation, and is recorded on the magnetic disk 63 by a magnetic head.

■The position of the magnetic head is determined by the magnetic head drive unit 78.
It is controlled so that areas determined by pre-loaded index information and print codes can be accessed.

Moreover, reproduction is performed as follows.

■Connect multiplexers 1, 2, and 3 to contact d.

Switch to e and g.

(2) Upon receiving the signal and index information from the print code reading section 73, the address position on the memory of the magnetic disk 63 is set.

■The signal read by the magnetic head is passed through the FM demodulation, de-emphasis circuit, etc. to the A/D converter A/D2.
and digitized.

(2) The digitized signal is temporarily stored in the memory 2. All audio data (for example, approximately 10 seconds worth of data) corresponding to the specified print code is recorded in the memory 2.

■The data on memory 2 is returned to D/A converter D/A1
is converted to analog. As a result, the recorded audio signal is time-expanded. The frequency at this time is determined based on the characteristic data in the index information.

■Sound is reproduced from the speaker 67 through the filter 1 and the amplifier 1.

Further, copying is performed as follows.

■Multiplexers 1, 2.3, respectively, f.

Switch to the h contact side.

■The data read from the voice card 8 is transferred to the microcomputer 74.
from there to memory 1, and is temporarily stored in memory 1.

(2) Since this data is in a compressed state, it is decompressed by an encoder and stored in the memory 2.

(2) Move the magnetic head to the address of the magnetic disk 63 as the copy destination from the print code and inch/γx information that have been read in advance.

■The subsequent operations are the same as when recording.

Next, we will discuss other examples of prints in Figures 29 and 30 (
This will be explained using a) and (b). In the example shown in Figure 24 above, the barcode was imprinted on the print and the audio was recorded (copied) from the audio card or the data from the audio card onto a magnetic disk. , as shown in FIGS. 30(a) and 30(b), a magnetic tape 92 on which audio is recorded is attached to a print 91, or a magnetic material (magnetic memory) 94 for audio recording is coated on the back of a print 93. Alternatively, a method may be used in which a magnetic material is applied between the image forming surface of the print and glint base paper, or a method in which magnetic tape is pasted on the back surface of the print.

With these methods, audio input and output can be performed in the same way as with magnetic disks. In this method, the print itself contains the audio information, so there is no need for another medium such as a magnetic disk, and the print Present to someone (
This is convenient for cases such as 111 presentation).

Next, the route for obtaining prints using the above-mentioned various methods and the manner in which the prints are used will be explained using FIG. 31.

First, as the first route (indicated by arrow 1), the user (
The consumer) only takes the film 21 shot with the camera 1 and sends it to a photo finisher (or DP agent or laboratory).
The photofinisher develops and prints the film 21 to create a print 62 with a code, which the user receives. The user can reproduce the audio by applying the audio card 8 and the print 62 to the audio player 61. Note that FIG. 31 shows a code reading section 73' that is separate from the audio reproducing device 61. Furthermore, if the data on the audio card 8 is copied to another medium such as the magnetic disk 63, the medium and the print 62 can be connected to the audio player 61 to listen to the audio. After-recording of comments etc.
You can also.

As a second route (indicated by arrow 2), the user takes the film 21 and the audio card 8 to a photofinisher, where the film 21 is developed,
Burning is performed to obtain a print, and the information previously copied from the audio card is recorded on the magnetic tape.

Then, the print 91 is pasted with magnetic tape 92 and returned to the user. The user can listen to the audio by applying this print 91 to the regenerator 61' for reproducing the audio. Note that this regenerator 61' also has a magnetic head inside and is capable of not only reproducing but also recording.

The former route is suitable for organizing into albums, and the latter route is suitable for printing as presents. In addition, in the above explanation, the user copies the data to the magnetic disk 63 or the magnetic chip 92
An example of copying on the photofinisher side is shown in Figure 30, but this can be done either way.For example, the photofinisher can create a print 93 with a magnetic memory 94 as shown in Figs. 30(a) and (b). It is also possible to realize a system in which the voice card 8 is returned to the user and the data on the voice card 8 is recorded in the memory 94 by the user.

Furthermore, the memory means for recording the correspondence information between the photographed frames and the storage area of the audio data is not limited to film as in the above embodiments, but may be any device in which a recording medium (memory) is loaded in a film cartridge. The corresponding information may be written on this recording medium. In this case, electronic or magnetic means may be used as the recording means. Furthermore, in this case, the film is developed and then the prints and cartridges are printed. In order to correspond with the audio storage area in the memory of , when printing at the photo lab,
The information read from the memory of the cartridge may be imprinted on the print, or may be printed on the back or front corner of the print.

[Brief explanation of drawings]

FIG. 1 is a front view of a camera according to an embodiment of the present invention, and FIG.
The figure is a rear view of the camera, Figure 3 is a top view of the camera, Figures 4 (a) to (e) are configuration diagrams of the display section of the camera, and Figure 5 is a diagram of the configuration of the display section of the camera.
The figure is a circuit block diagram of the same camera, FIGS. 6(a) and 6(b) are flowcharts showing the operation of the microcomputer of the same camera, and FIG.
The figure is a block diagram of the audio circuit section of the same camera, Figure 8 is a block diagram of the code imprinting device on the film loaded in the camera, Figure 9 is a block diagram of the light shielding plate section of the same device, and Figure 10 is a block diagram of the camera's audio circuit section. Figure 11 is a diagram showing the pattern of the imprint display section in the device, Figure 11 is a diagram showing the film on which the code is imprinted, Figure 12 is a front view of the audio card, and Figure 13 is the side of the camera body where the audio card is installed. 14(a) and 14(b) are explanatory diagrams of the contact portion, FIG. 15 is an electrical configuration diagram of the voice card, FIG. 16 is a configuration diagram of the memory of the voice card, and FIG. 17 is a diagram of the configuration of the memory of the voice card. A flowchart showing the operation of the microcomputer in the audio card,
Figures 18, 19, and 20 are flowcharts showing the operations of various devices that communicate with the audio card, Figure 21 is a perspective view of the audio reproducer, Figure 22 is a configuration diagram of the magnetic memory,
FIG. 3 is a configuration diagram of the code reading section of the audio player, and FIG. 24 is a diagram showing the relationship between the coded print and the code reading section.
Fig. 25 is a diagram showing the output of the code reading section, Fig. 26 is a circuit diagram of the audio regenerator, Fig. 27 is a flowchart showing the operation of the microcomputer of the audio regenerator, and Fig. 28 is a diagram of the audio regenerator. Circuit block diagram, Figure 29 is a front view of a print with magnetic memory, Figures 30 (a) and (b) are front and side views showing an example of a print pond with magnetic memory, and Figure 31 is a film and audio card. FIG. 2 is a diagram showing a flow and usage mode including a photo finisher. 8...Audio card (recording medium), 61.61'...
Audio player, 62.62.91...Print, 63.
. . . Magnetic disk (recording medium), 73 . . . Print code reading section, 74 . Processing unit, 81... Audio circuit unit, μ
C...Microcomputer. Applicant Minolta Camera Co., Ltd. Agent
Patent Attorney Yasuo Itatani Figure 1 5U 21X! Zushi Ichika 6 Figure 3 Release) ↑2 Tan 11 No. 121! A Figure 13 Figure 15 Gypsum? Card 8 Fig. 16 4rIG sword - memory child - Ichiyo area Fig. 18 Fig. 19 Fig. 22 Stone ε destination memory 23 Fig. 24 Fig. 25 Fig. 26 Fig. 29 Fig. 30

Claims (1)

[Claims] (1) A recording medium that has multiple recording areas, in which audio data corresponding to the photographed frame is recorded in each recording area, and a code indicating each audio recording area described above corresponds to each photographed frame. a reading means for reading a code on the print, a search means for searching for a recording area in the recording medium corresponding to the code read by the reading means, and a search means for searching by the search means. An audio reproducing device comprising: reproducing means for reproducing audio data corresponding to a recording area.