JPH0439952B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an optical disk and an optical disk device,
In particular, the present invention relates to an optical disk and an optical disk device that record analog image signals.

[Prior Art] There are two types of optical discs: optical discs that record analog signals and optical discs that record digital signals. An analog video disc device is configured to record an analog image signal obtained from a video camera or the like onto an optical disc. According to this analog video device, still images are
It can record 24,000 frames and videos for 13 minutes and 20 seconds, and is used for product explanations and property rights introductions by real estate agents.

[Problems to be Solved by the Invention] According to conventional analog optical disk devices, only analog images are recorded on the optical disk, and information about the number and contents of the optical disk is written on the optical disk using letters or symbols. was doing. For this reason, when an analog optical disk device is to be controlled by a computer, the computer cannot read information about the optical disk number or contents, and the operator must input the information from a keyboard or the like. As a result, for example, if a plurality of optical disks are present and the operator mistakenly attaches another optical disk to the apparatus, there is a problem in that if the operator does not notice, the operator continues to observe the image of the other optical disk. Particularly, when this optical disk is used to record transendoscopic images, there is a risk that a serious diagnostic error will be made due to a mix-up of images.

SUMMARY OF THE INVENTION An object of the present invention is to provide an analog optical disc in which the number and contents of the optical disc are recorded as digital data, and an optical disc device that reproduces and outputs digital data from this disc.

[Means for Solving the Problems] According to the present invention, an optical disk transmits an image signal corresponding to one field or one frame of an image into one image signal.
An optical disk is provided in which data consisting of a plurality of bits is stored as digital data.

According to the present invention, there is provided a reproducing unit that sequentially reproduces bit signals from an optical disk storing an analog image signal and a plurality of bit signals in which the image signal corresponding to one field or one frame of an image is one bit signal; An optical disk device is provided that includes a converting section that compares the signal level of the bit signal with a predetermined level and converts the bit signal into a binary signal according to the predetermined level, and an output section that outputs the binary signal as digital data. Ru.

[Function] One frame or one field is one bit, for example, 10-bit digital data is stored on an optical disk that stores an analog image signal,
By reading and recognizing this digital data, a plurality of optical disks can be identified from each other.

[Embodiment] FIG. 1 shows a circuit system for recording identification data on an optical disk on which analog image signals are recorded. The electronic scope 11 is an endoscope equipped with a solid-state imaging device (not shown) at its tip, and the output section of this electronic scope includes a video processing circuit 12 that processes image (video) signals obtained from the solid-state imaging device. connected to. A keyboard 13 is connected to the video processing circuit 12 . The keyboard 13 displays patient data, that is, patient number (IDNo.), name (NAME), birthday (BIRTH DAY), age (AGE), examination date (EXM.DATE), findings (MEMO), and track number (TRACK No.). .)
used for keying in.

The output of video processing circuit 12 is connected to personal computer 14 . The personal computer 14 is connected to a database 15, reads data from the database 15 in response to input data from the keyboard 13, and displays, for example, the above-mentioned patient data input items on a display 16. Further, the personal computer 14 stores the input patient data in the corresponding storage area of the database 15. Furthermore, personal computer 1
4 is identification information input using the keyboard 13;
For example, it has a function of selectively generating white and black image signals according to an identification number, and when these white and black image signals are input to the optical disk device 17, identification data is recorded on the optical disk 18.

The image signal recording operation will be explained with reference to FIG. When the optical disc 18 is loaded into the optical disc device 17 and identification data, for example, an identification number is inputted using the keyboard 13, the identification number is sent to the personal computer 14 via the video processing circuit 12.
is input. The personal computer 14 stores the identification data in the database 15 and also stores the bit signal of the binary signal representing the identification number, ie, 1.
Alternatively, a 0-bit signal is output as a white or black image signal. That is, the identification number is digitally represented by a black and white image signal. The black-and-white image signal is input to the optical disk 17 so that the signal is transferred to the optical disk 1
Recorded in 8. In this case, the identification black-and-white image signal is stored in which one bit represented by white or black corresponds to one frame or one field, and the identification number is stored in 10 frames or fields as a black-and-white image signal. That is, the identification number is represented by a 10-bit digital image signal, for example,
Identification numbers up to 1024 can be set.

When an analog image signal is recorded on the optical disk 18 on which an identification number is recorded, the image signal of the endoscopic image from the electronic scope 11 is sent to the optical disk device 17 via the video processing circuit 12 and the personal computer 14. An image signal is recorded on the optical disk 18 by inputting the signal. Further, patient data input from the keyboard 13 is stored in a database 15 by the personal computer 14.

FIG. 2 shows a circuit for reproducing and recognizing the identification signal of the optical disk 18 on which the identification data and analog image signal have been recorded as described above. According to this playback system, the optical disc 18
is loaded into the optical disc playback device 21. In this state, when the confirmation switch 22 is pressed to confirm the identification number of the optical disk 18, the pulse generator 2
3 and preset circuit 24 are energized. The pulse generator 23 generates pulses and the preset circuit 2
4 sets the preset value: 23991 in the counter 25. The output of the counter 25 is input to a comparator 26 and is also supplied to the optical disc reproducing device 21. The optical disc reproducing device 21 starts reproducing the optical disc 18. The optical disc 18 is played from the inner circumference on which the identification number is recorded, for example. The reproduced signal is a black and white image signal representing an identification number, and this black and white image signal is inputted to a comparator 28 via a capacitor 27 and compared with a reference level Vref as shown in FIGS. 3a and 3b. . Retriggerable mono multi 2 according to the output of the comparator 28
9 outputs binary data corresponding to the identification number.
This binary data is input to the shift register 30.

The output of the counter 25 (set value: 23991) is compared with reference data (24000: total number of tracks on the disk) by a comparator 26. At this time, the output of the comparator 26 becomes H level, and the AND gate 3
1 is open, and the pulses from the pulse generator 23 are input to the counter 25 and shift register 30 via the AND gate 31. Every time a pulse is input, the counter 25 counts up and the shift register 3
0 shifts the identification data.

When the counter 25 counts up to 24000, the output of the comparator 26 becomes L level, and the AND
Gate 31 is closed. At this time, the shift register 30 has been shifted by 10 bits, and 10 bit data corresponding to the identification number is stored in the shift register 30. The data in the shift register 30 is input to an encoder 32 and converted into, for example, a segment signal. By inputting the segment signal to the display panel 33, the display panel 3
The identification number is displayed at 3. This identification number allows the optical disc loaded in the playback device 21 to be identified.

Note that the identification data of the shift register 30 is input to the personal computer 14, and is compared with the identification information stored in the database 15, and based on a match, the corresponding patient data can be read out from the database.

In FIG. 1, the identification data is recorded under the control of a personal computer, but it is also possible to record the identification data using a circuit as shown in FIG. According to this circuit, selection circuit 3
5, the image signal TV of the TV camera and the image signal EFS of the electronic scope are input. This selection circuit 35
When an H level selection signal is input to the TV signal
When TV is selected and an L level selection signal is input, signal EFS is selected. The image signal from the selection circuit 35 is input to a comparator 36 and an amplifier 37. The comparator 36 compares the image signal with the reference voltage Vref, determines the presence or absence of the image signal, and outputs a 1 (H) level when there is an image signal, and 0 (L) when there is no image signal.
Output the level. The output of this comparator 36 is input to a selection signal input terminal of a selection circuit 38. This selection circuit 38 selects the outputs of the amplifier 37 and the monochrome image signal generation circuit 39 according to the output level of the comparator 36. That is, when the level is 1, the selection circuit 3
8 selects the image signal via the amplifier 37, and when the level is 0, selects the black and white image signal.

The monochrome image signal generation circuit 39 outputs a black or white image signal depending on the bit level 1 or 0 of the identification signal, and this monochrome image signal is recorded on the optical disk as identification data.

The above has described the case where optical disc identification data is used as digital data, but this is not limited to this, and it is not limited to this. General information such as whether the disc is a normal optical disc or an ordinary optical disc may be used. In this case, even if several tens of frames are used to record digital data, it will not have much effect compared to the total number of recordable frames, which is 24,000 frames.

[Effects of the Invention] According to the present invention, since data is digitally recorded on the optical disc on which analog image signals have been recorded, it is possible to identify a large number of optical discs without fail.

[Brief explanation of drawings]

FIG. 1 is a block circuit diagram of an optical disk device according to an embodiment of the present invention, FIG. 2 is a circuit diagram of an optical disk identification circuit of the optical disk device, FIG. 3 is a waveform diagram of an identification signal, and FIG. The figure is a circuit diagram of the identification data writing circuit. DESCRIPTION OF SYMBOLS 11... Electronic scope, 12... Video processing circuit, 13... Keyboard, 14... Personal computer, 15... Database, 16... Display, 17... Optical disk device, 18... Optical disk, 21... ...Optical disc playback device, 22... Confirmation switch, 23... Pulse generator, 24... Preset circuit, 25... Counter, 26, 28...
... Comparator, 30 ... Shift register, 33 ... Display panel.

Claims (1)

[Scope of Claims] 1. An optical disk for recording analog image signals is characterized in that data consisting of a plurality of bits in which one bit is an image signal corresponding to one field or one frame of an image is stored as digital data. Optical disk. 2. Reproducing means for reproducing the bit signal from an optical disk storing an analog image signal and a multi-bit signal in which one bit is an image signal corresponding to one field or one frame of an image, and a signal of each of the bit signals. An optical disk device comprising means for comparing the level with a predetermined level and converting the bit signal into a binary signal, and output means for outputting the binary signal as digital data.