JPS62274885A - Still picture transmission equipment - Google Patents

Abstract

PURPOSE:To effectively use the titled device without losing a data signal by transmitting a still picture video signal and the data signal to an external part. CONSTITUTION:When the output of a level detection circuit 208 is above a prescrive level, an ID signal obtained by multipexing a video signal and a frequency is demodulated by an ID detection circuit 251 to reproduce ID data. Based on this ID data, whether the reproducing video signal is the odd number or the even number field of a frame picture is examined, if this is a field picture, the reproducing signal is written in the field designated by the switch 43 of R, G, B frame memories, for instance, in an odd number line if the field 1 is designated and in an even number line if the field 2 is designated. Thereby, the still picture video signal recorded on a recording medium and the data signal relating to the video signal are transmitted to the external part.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a still image transmission device, and particularly to a transmission device that transmits still image information recorded on a recording medium.

[Prior Art] For example, a still image transmission device may be considered in which still images reproduced from a recording medium such as a video floppy are temporarily stored in an image memory and read out sequentially in accordance with the transmission speed. A video floppy also records a video signal and data related to the signal (hereinafter referred to as ID data) which is engraved on the video signal and frequency multiplexed.

[Problem that the invention seeks to solve]

However, in conventional transmission devices, the video signal reproduced from the recording medium is transmitted, but the ID data is not transmitted.

Therefore, when receiving such a video signal, the ID
Since data is lost, the video signal cannot be effectively used based on the ID data.

The present invention aims to solve such problems.

[Means for solving problems]

In order to achieve the above object, the present invention reproduces a still image signal from a recording medium on which the still image video signal is recorded together with data No. 3 related to the video signal, and transmits the still image signal to the outside. The transmission device includes transmitting the data signal to the outside together with the still image video signal.

[For production]

In the above, both the still image video signal recorded on the recording medium and the data signal related to the video signal are transmitted to the outside 8[3.

<Embodiment> According to a preferred embodiment of the present invention described below, still image information recorded on a magnetic sheet is reproduced, the color balance of the still image information is adjusted, and then electronically transmitted to another device. Further, a transmission device that can receive information electronically transmitted from another device and record it on a magnetic sheet will be described.

FIG. 1-1 is a front view of a power transmission device according to an embodiment of the present invention, and FIG. 1-2 is a block diagram showing the configuration of the device.

In Figure 1-1, 1 is a power switch, 2 is a video floppy insertion slot with a magnetic sheet, 3 is a monitor display section, and 4 is a screen that automatically reproduces multiple still images and freezes (writes) them in memory. This switch is used to select the automatic playback transmission mode in which the transmitted data is sequentially transmitted. This switch is also a self-illuminated switch that also serves as a display LED 7 that lights up when it is selected.

The automatic reproduction transmission is started by the start switch 32, but in this mode, it is necessary to program the track number to be transmitted in advance, and if this is not done, it will not operate even if the start switch 32 is turned on. A track number setting circuit 255 for programmatically setting the track number to be transmitted is connected as described later.

5 is a 2-digit 7-segment 1-LED which also serves to display the track number, the number of free tracks, and other information.

7 is an eject switch for ejecting the video floppy; 8 is an automatic reception switch for automatic reception recording; and this switch is also used as a display LED 16.

Reference numeral 9 denotes a recording switch for recording on the magnetic sheet, and the LED lights up when the recording mode is on and recording is possible, that is, when the track being accessed by the head 205 described later is unrecorded. It is also used as L l 8.

Reference numeral 10 denotes a switch for switching the source of the signal to be reproduced on the monitor 3 to the video floppy (VF) side. By pressing this switch, a reproduction mode is set in which reproduction is performed from the video floppy. This switch also has an indicator LED that lights up when this switch is selected.
It is also used as

Reference numeral 11 denotes an NTSC signal selection switch for switching the source of the signal reproduced on the monitor 3 to the externally input NTSC signal side. By pressing this switch, it becomes possible to view the external input on the monitor 3 using EE.

Further, this switch also serves as a display LED 6 that lights up when this switch is selected.

Reference numeral 12 denotes a memory selection switch for switching the source of the signal to be reproduced on the monitor 3 to a reproduced image of a built-in frame memory, which will be described later. Further, this switch also serves as a display LED 7 that lights up when this switch is selected.

As will be described later, when external input or built-in frame memory is selected as the source of the signal to be reproduced on the monitor 3, the device automatically enters the recording mode and checks whether the track being accessed by the head is unrecorded or not. If it is determined that it has not been recorded, the LED L 18 will be lit to indicate that recording is possible, and if it has been recorded, the LED L 8 will be turned off to indicate that recording is not possible. Therefore, the user can know whether the image displayed on the monitor 3 can be recorded on the magnetic sheet.

19 is a switch for moving the head to the direction in which the track number increases, that is, toward the inner circumferential side of the magnetic sheet; 20 is a switch for moving the track of the magnetic sheet that the head is accessing to the track number; 23 is a memory lock switch for locking the contents of the frame memory so that they are not erased; the memory lock switch lights up in the memory lock state; It is also used as LED L I 3 which is turned off in the released state.

24,, 25. 26. 27 is a switch for setting a single color in both modes of the transmission monitor mode, and display L E D T, l, L2. L3.
It is also used as L4, and lights up and blinks according to the sequence described below, and when reproducing a signal from a frame memory described later on the monitor 3, the red (R) component, green (G) component, Blue (B) component, black (B
k) It is used as a display means to indicate which component is being displayed in monochrome display mode, or whether color display mode is selected. Note that the R memory 213, which will be described later. G memory 214. Such a monochrome display mode is implemented by reading a signal from one of the B memories 215.

In addition, the display LED LI, L2. L3. L4 is also used as a means for displaying the transmission/reception status, that is, which memory corresponds to the signal being transmitted/received.

A display L E 28 is controlled to turn on (ON) when the signal is frozen by a frame signal and turn off (OFF) when the signal is frozen by a field signal, according to an ID signal obtained from a reproduced video signal from a video floppy. D
It also serves as L8 and a setting switch for switching between field mode and frame mode of freeze operation.

29 is a switch for setting the transmission mode,
LEDL that indicates that the transmission mode is set]
It also serves as 4.

30 is a switch for setting the reception mode,
LED indicating that the reception mode is set
It also serves as L15.

32 is a start switch for starting transmission; 33
is a stop switch for stopping the transmission once started; 34 is a resolution switch for selecting either frame transmission mode or field transmission mode as the transmission mode; 35 is for freezing the video signal in the memory, which will be described later. 37 is a two-color transmission mode in which the G component of the video signal is first transmitted, and then the B component and R component are transmitted line sequentially, and the R component, G component, and B component are transmitted sequentially in this order. 3-color transmission mode that transmits the R component, G component, B component, and Bk component in this order, and monochrome transmission mode that transmits only the black and white signal Y. This color mode switch is also used as L E D L ] 9. The transmission mode set each time the switch 37 is turned on is a two-color transmission mode, a three-color transmission mode, a four-color transmission mode,
They are replaced in the order of monochrome electric transmission motes.

38, 39, 40, and 41 are lit according to the operation of the color mode switch 37 when the function switch 42 is switched to the T x / Rx side, or according to the color transmission mode set during auto reception, which will be described later. Display LEDL9. LIO, Lll.

It lights up when each of the two-color mode, three-color mode, four-color mode, and monochrome transmission mode described above is set in L12.

The color mode switch 37 also has the function of switching the monitor display mode described above when a function switch described later is turned to the MONITOR side.

Further, as described above, 42 is Tx/Rx for switching whether the color mode switch 37 is used as a switch for setting the transmission mode or as a switch for setting the monitor display mode.

This is a MONITOR selector switch.

Reference numeral 43 is a switch for setting the area of the memory to be frozen when the field mode is selected by the field frame setting switch 28 to either the odd numbered line area or the even numbered line area.

FIGS. 1-2 are block diagrams showing the configuration of an apparatus according to an embodiment of the present invention.

In FIGS. 1-2, 100 is a control circuit, and the details of its operation will be described later. Reference numeral 201 denotes a disk-shaped magnetic sheet on which video signals can be recorded and reproduced, which is inserted through the video floppy insertion slot 2. Fifty concentric tracks are formed on the magnetic sheet shown in this embodiment, and a video signal for one field is recorded on each track.

Reference numeral 202 denotes a motor that rotates the magnetic sorter 1-201, and rotates the magnetic sorter 20 at a predetermined rotational speed (3600 rpm in the case of NTSC) synchronized with the vertical synchronization signal of the video signal.

203 is a head carriage that supports the head 205, and by driving the step motor 204, the head 20 supported by the head carriage 203 is moved.
It is possible to control the access position of the magnetic seams 1-20] and J2 of No.5. 204 is the step motor for driving the heald carry run 203, and 205 is the head, which is used for recording in this embodiment.

Also used for playback. 206 is a step motor 204
This is a driver that outputs a signal to drive the control circuit 1.
A signal for driving the step motor 20/I is generated based on the control signal 00. The control circuit 100 is a truck U.
P switch 19,] - Sends a control signal to the driver 206 when changing the access position of the head 205 on the magnetic seat 1-201 in accordance with the operation of the rack DOWN switch 20, or when performing a track recording state detection operation to be described later. It operates to output and change the access position of the head 205. 207 is a reproduction process circuit that performs processing such as pre-amplification and clamping of the reproduction output in the track of the magnetic sheet 201 which is reproduced by the head 205; 208 is the magnetic sheet 20 which is reproduced by the head 205;
This is a level detection circuit that detects whether or not there is a reproduction output on the 11th track.

If a signal is recorded on the track that the head 205 of the magnetic seed 20] J: is accessing, the reproduction output of the head 205 is within the specified range, and if no signal is recorded on the track of the magnetic sheet 2011. Using the fact that the reproduction output of the head 205 is below a predetermined value, it is detected whether the track being accessed by the head 205 is recorded or unrecorded. 209 converts the signal processed by the reproduction process circuit 207 or the decoder 222 into R, G,
R, G, B matrix circuit divided into each component of B, 210, 211. 212 is an A/D converter that A/D converts the R, G, and B component signals separated by the R, G, and B matrix circuit 209; 21.3. 2], 4. 215 is A/D converter 2]6. R component and G component A/D converted by 211°212.

Each R memory stores the B component digital signal.

G memory and B memory, each of which can store one frame worth of video signals. Also memory 2
1.3. :2+4. 21.5 is also used as a memory for receiving transmitted video signals.

Furthermore, a memory 250 for the black (B k, ) component is provided especially for the four-color transmission mode.

2i6. 2]7. 218 is a D/A converter that converts the digital signals stored in the R memory 13, G memory 14, and B memory 15 input via the switch SW5 into analog signals. 219 is a D/A converter 2], 6
．． 217. 2], the color difference signal RY is obtained from the R, G, and B component signals D/A converted by 8.

B-Y, color difference 7 trix circuit that outputs luminance signal Y, 2
20 is a color difference signal RY input via SW3.

An encoder 222 modulates the B-Y and luminance signal Y and outputs it to the monitor 3 as a standard television signal of NTSC standard;
Demodulates the standard television signal to generate color difference signal R-Y
, B-Y, a decoder that outputs the luminance signal Y; 223 is the aforementioned R memory 2131, G memory 214, and B memory 21;
A memory controller that controls writing and reading of the memory 250 in the memory controller 223.
is the output of the A/D converter 224, which will be described later, to the R memory 213.
, G memory 214, B memory 215, Bk memory 250
control to write to, and R memory 213, G memory 2]4
, I] Read the signal written in the memory 215 and
/A converter 226 is controlled. Further, calculations for the Bk (black) component, which will be described later, are also performed by the controller 223.

224 is the A/I) converter, and the telephone line 23
1, specifically, for example, an analog signal obtained by demodulating a modulated signal divided into an R component, a G component, and a B component and received in time series for each component by a demodulator 225. A converter that converts signals into digital signals.

The demodulator 225 demodulates the modulated signal input via the telephone line 231.

226 is the R memory 21 by the memory controller 223.
3. G memory 214, B memory 215, Bk memory 25
This is a D/A converter that converts a digital signal read from 0 into an analog signal.

227 is a modulator for modulating the analog signal converted by the D/A converter 226 and transmitting it via a telephone line.

Note that the conversion speed of the A/D converter 224 and the A/D converter 226 is the same as that of the D/A converter 210. 211.212, D/
The conversion speed of the A converters 216.2], 7.2]8 is small.

This is the A/D converter 21.0.21], 212, D/
A converter 216. 2]7. 218 is memory 2 within one field period of a standard television signal, 3.214
．． , 2] 5 requires a conversion speed of video rate, whereas the A/D converter 224 and D/A converter 226 are converted over a narrow band telephone line over a period of several minutes. Memory 2] 3.214. 21
This is for writing or reading 5.

228 is a reception detection circuit that detects a ringing signal (corresponding to a telephone ringing tone) sent through the telephone line 231 prior to transmission of the video signal, and outputs a reception command signal.

Reference numeral 3 designates the monitor shown in FIG. 1-1, which displays a standard television signal input via a color killer circuit 256. 230 is a control line for controlling each memory 213 to 215 and 250 from the memory control 223.

231 is the telephone line.

232 is a magnetic sheet presence/absence detection circuit that detects the presence or absence of the magnetic sheet 1-201 from the signals of the photointerrupters 232-A and 232-H. When there is a magnetic sheet 201, the sheet 1 causes photo ink printers 232-A,
When the optical path of 232-B is blocked and there is no magnetic sheet 201, the photo ink club 232-A.

The optical path of 232-B is not blocked. The magnetic sheet presence/absence detection circuit 232 detects the presence or absence of the magnetic sheet 201 by detecting the difference in the output of the photointerrupter, and sends the result to the control circuit 100.

233 is a recording process circuit that modulates a signal input via switch SW4 and sends it to head 205.

235 is a display device driven by the output of the control circuit 100, and is the above-mentioned L E D L ] −L ] 9
, and the 7-segment LED 5 to display, for example, the 7-segment 1-LED 5 indicating that automatic reception is not possible, the number of remaining recordable sheets in the automatic reception mode, etc.

236 is the aforementioned motor drive circuit, which is the control circuit 100.
Operation and stop are controlled by the output.

250 is the memory into which the black (B k ) component of the video signal is written; 251 is an ID signal detection circuit for reproducing the II) signal frequency-multiplexed with the video signal from the magnetic sheet 1;

253 is an included counter for causing the control circuit 100 to perform interrupt processing.

255 is a control circuit for program setting the track number for automatic transmission; track N connected to 00;
o setting circuit. ]・The rack number setting circuit 255 includes a U for sending the head on the main body side in both directions, the inner circumference side and the outer circumference side.
P switch 263 and DOWN switch 264, a setting switch 260 for enabling the track number setting circuit 255, a decision switch 261 for storing the track number to be transmitted in the control circuit 100, and a track number setting operation. An end switch 262 is provided to end the process.

Reference numeral 256 is a color killer circuit for causing the monitor 3 to display only a luminance signal when the monochrome display mode or monochrome display mode is set, and the operation or non-operation of the circuit 256 is controlled by the control circuit 100. .

During playback, SWI connects the head 205 to the playback process circuit 2.
This is a changeover switch for connecting to the recording process circuit 233 during recording.

SW2 connects the decoder 222 to the switch SW3 when outputting the video signal input via the external input terminal 221 to the monitor 3, and connects the decoder 222 to the switch SW3 when outputting the video signal input from the magnetic sheet 201 to the monitor 3. This is a changeover switch that connects the process circuit 207 to the switch SW3.

SW3 receives the video signal reproduced from the magnetic sheet 201,
Alternatively, when inputting video directly via the external input terminal 221 and outputting it to the monitor 3, switch SW2 is connected to the encoder 2.
20, R memory 213, G memory 2]4, B memory 2]5, and color difference matrix circuit 2]9 when outputting the video signal stored in the Bk memory 250 to the monitor 3.
This is a changeover switch that connects the encoder 220 to the encoder 220.

SW4 is R memory 213, G memory 214, B memory 2
When recording the video signal stored in the magnetic sheet 1-201 on the magnetic sheet 201, the color difference multiplex circuit 219 is connected to the recording process circuit 233, and the video signal input via the external input terminal 221 is recorded on the magnetic sheet 1-201. This is a changeover switch that connects the decoder 222 to the recording process circuit 233 when recording.

SW5 is R memory 213, G memory 214, B memory 2
15. D/A signal read from Bk memory 250
This is a changeover switch that controls which of the converters 216 to 218 the signal is sent to. Details of the operation will be described later.

The above-mentioned changeover switches SWI to SW5 are included in the control circuit 100.
The state is switched by .

Next, the format of data transmitted by the device of this embodiment will be explained using FIG. 2.

FIG. 2 shows the still image transmission data waveform of this embodiment. In such electric transmission, data is read and written for each memory using memories 213, 214, 215, 250 for each color signal shown in Fig. 1-2.
The figure shows the data waveform for that single color. In FIG. 2, the horizontal axis is the time axis, and the vertical axis shows the level of the transmitted data. Note that the symbol attached to the horizontal axis indicates the memory address corresponding to the data being transmitted. The configuration of such a data waveform includes a synchronization section (I) consisting of 31-1.
H is the time required to transmit the horizontal line of the screen)
, 2H, a data section containing transmission data and reproduction ID data consisting of IH, a blank section consisting of IH, and a video section.

The synchronization section is repeated at the IH cycle (when one line of memory 0 to This is used to know the line divisions of the video signal section. The white level corresponds to the white level of the video section, and is used to correct changes in the transmission level that are affected by the transmission line condition. In this data waveform, the period of the synchronization part and the white level part may be set to a long time, for example, 10 seconds.

The transmission data in the data section is data (bit 0) indicating whether the transmission mode is frame transmission or field transmission.
Transmission color mode (monochrome or single color, 2 colors, 3 colors,
data (bit 1, 2) to distinguish between normal transmission mode and monochrome transmission mode (bit 3), code indicating the switch when the color of the single color mode is set, which will be described later. (Pill-4, 5) and information data from 2 bytes to 6 bytes regarding individual still images that are frequency-multiplexed and recorded in the video signal reproduced from the video floppy (hereinafter referred to as II data)
It is made up of.

Note that hits 1 and 2 in the monochrome transmission mode are data indicating which transmission color mode is set before the monochrome transmission mode is set.

In addition to data on the shooting date and time, the ID data includes data indicating whether the frame recording is a field recording, and if it is a frame recording, whether it is an even field or an odd field.

The data format is allocated as follows. (1 byte: electric transmission mode, 2 to 6 bytes I
D data) 3 bytes...The video track number 4 bytes.
... Year of shooting (top 4 bits, 10th place, bottom 4 bits)
1st place BCD) 5 bytes... Shooting month (top 4 bits)
t 10th place, lower 4 bits 1st place BCD) 6 bytes
... Shooting date (upper 4 bits, 10th place, lower 4 bits)
When transmitting data of 1st place BCD) or more, select “1”.
”, it is the “FF” level, and when it is 0, it is the “FF” level. o o
For example, two dots of the plurality of dots of X shown in FIG. 3 represent one bit.The deviation is fine.

Further, the IH blank section is provided in order to more accurately obtain the data start of the video signal.

FIG. 3 shows a two-dimensional arrangement of data in the video section, which is stored in the aforementioned memories 213 to 215°250.
shows the array of The horizontal direction is x-O to XE dots, and the vertical direction is the video area Y = 7 to YE lines excluding Y-0 to 7 lines, which are the synchronization area, white level area, data area, and blank area, total (XE + 1) x (YE-6) Consists of dots.

Next, the operation of the embodiment of the present invention will be explained using a flowchart. FIG. 4 shows the basic operation flow of this embodiment.

When the power switch 1 is turned on, various initial settings are performed in step 4-1. That is, the memory lock flag MLF, which determines whether or not to prohibit the memory freeze operation, is cleared to enable the freeze operation in which the video signal is written into the memory shown in FIGS. 1-2.

Also, an initialization request flag T RQ F L indicating whether or not it is necessary to detect the track recording state.
Set. Further, interlaced masks I R and Q M S K are set to prohibit interlaced I to obtain the timing of data transmission and reception, thereby prohibiting interlaced.

Further, the transmission mode number to be described later is set to "1", that is, the two-color transmission mode, the transmission mode is set as the transmission/reception mode, and the automatic transmission/reception mode is not set.

Furthermore, the memory lock flag MLF is reset and the memory lock state is released.

Further, the monitor mode number to be described later is set to "0", that is, the color monitor mode. Therefore, if the function switch is turned to the Tx/Rx side, the LEDLL,
L2. L9. Ll9. If it is defeated on the MONTTOR side, the LEDs Ll, L2, L3,
Ll9 lights up.

In addition, the playback mode is set as the initial setting, and L E
DL5 is lit.

In addition, the field frame display L E D L described later
8 goes out and field mode is set.

After completing the above initialization, the initial operation routine (s
Perform step 4-2). If it is confirmed that the recording/playback transmission/reception is possible, in step 4-3, the process branches to the playback routine of 5tcp4-4 if the playback mode is selected, and to the recording routine of 5tcp4-5 if the record mode is selected. Incidentally, such mode discrimination is performed by detecting the state of the above-mentioned switch SWI. That is, when it is on the A side, it is the reproduction mode, and when it is on the B side, it is the recording mode. After passing through 5steps 4-4 and 4-5, it is determined whether the mode is transmitting mode or receiving mode in 5steps 4-6, and if the mode is transmitting mode, the process goes to the sending routine of 5steps 4-7, and if it is the receiving mode, the process goes to the receiving routine of 5steps 4-8. Branch out.

When the recording/reproducing routine and the transmitting/receiving routine are completed in this way, the process returns to step 4-2 and operations are always performed according to commands input from each switch.

Next, the initial operation routine shown as 5steps 4-2 will be explained with reference to FIG. First, each LED shown in FIG. 1-1 lights up according to the state of each flag (s
tep5-0). Next, the magnetic path presence/absence detection circuit 232
The presence or absence of the magnetic sheet 201 is detected from the output of (ste
p5-]) If it does not exist (), set the initialize request flag T RQ F L to the cell h L/ (step 5
-2), 5 steps until magnetic seam 1-201 is inserted
Wait between 5-1. If there is a magnetic seam 1-20], check whether I RQ F L is set (s
step5-3) If set, 5 from track 1
Level detection circuit 20 for all tracks up to track 0
Check the output of 8 to understand the recording state (recorded or unrecorded state of each track) of the magnetic sheet 1'' (step
5-4).

After grasping, the spatula is controlled to be located on the first track. The L/rack recording state obtained in this way is held in the control circuit 100, and when it changes due to recording operations, etc., it is changed accordingly. When the detection is finished in step 5-4, I
Reset RQ F L to 0 and set it to 1 at T-E D 5.
is displayed (step 5-5).

Next, the signal of the first track is frozen in the memories 213 to 2 ] 5 by performing the same operation as in the flow shown in steps 5step 6-12 to 5step 6-22, which will be described later.
-5').

The state of the function switch 42 is then detected and the M
If defeated by ONITOR side, 5tep5-1
3 to T x / 5te if knocked down to Rx side
p5-6-1 branch.

When the function switch 42 is turned to the Tx/Rx side, the following routine is performed. In such a case, when the color mall switch 37 is turned on (step 5)
-6), 1 is added to the transmission mode number by modulo 4 calculation (stcp5-7).

Here, set the transmission mode number to monochrome or single color transmission mode...02 color transmission mode...1 3 color transmission mode...2 4 color transmission mode... 3. In addition, according to this, the display L E D L 1
~Turn on L4. As mentioned above, when the power is turned on, the two-color transmission mode is set and the mode number is 1.

The lighting LEDs corresponding to each color mode are as shown below.

Lighting L E D Monochrome or single color transmission mode ・L4. L12.
T,,]9 (Ll!]-J off for monochrome)
Two-color transmission mode... Ll, L2.
L9. L] 93-color transmission mode ・・・・・・ Ll
, L2. L3. LIO, L] 94-color transmission mode ・・・・・・ Ll, L2. L3.
L/l, Lll, L19 LEDs LI to L4 are controlled to blink as appropriate in accordance with a sequence to be described later.

In addition, the selection of the electric transmission mode does not depend on the number of times the color mode switch is turned on, but by setting the switch in the LED shown in 38-4], the state of the death switch is determined and the respective electric transmission mode is selected. It's okay.

Next, 5tep5-24 detects that any of the switches corresponding to the LEDs that are controlled according to the transmission mode and turned on as described above is turned on, and when it is turned on, sets the transmission mode number to "0". , 5 steps to set monochrome transmission mode
5-25 to 5step 5-28), if it is not turned on, proceed to 5step 5-8.

When the function switch is on the Tx/Rx side, the LEDs L9 to L]2 corresponding to each transmission mode light up, and the LEDs L9 to L2 corresponding to each transmission mode light up accordingly.
By turning on any one of 4 to 27, the monochrome transmission mode is set (step 5-25).

This is L E D L] 2 and L E D I-]
~L E corresponding to the switch turned on among I-4
Only D is lit, the others are off (s I: e
p5-26.5tep5-27), the setting status of the monochrome transmission mode is displayed.

Next, a switch code SC corresponding to the monochrome transmission mode set as described above is determined. Furthermore, switch code SC
corresponds to bit 4.5 of the above-mentioned transmission data and is defined as follows.

Switch code 5C 00・・・・・・・・・・・・・・・ Switch 2401 ・・・・・・・・・・・・・・・・・・
Switch 2510 ・・・・・・・・・・・・・・・
・・ Switch 2611 ・・・・・・・・・・・・・・
... Switch 27 and switch 10 for selecting the source. 11. , 12 is turned on, the source to be reproduced on the monitor 3 is selected accordingly (step 5-8).

When the VF selection switch 10 is pressed, the SW in Figure 1-2
], 2.3 are all connected to the A side, and the display L E
Turn on D L5 (turn off L6 and L7) (step
5-9) (SW/l is arbitrary).

When the memory selection switch 12 is pressed, the SW in Figure 1-2
Connect I and 3.4 to the B side, B side, and A side, respectively, and turn on the display L E D L 7 (L5.1-6 is off)
(step 5-10) (SW4 is optional). Such memories 13, 14. Since the access speed of the memory of the memory controller 223 is high, reproduction of the information on the monitor 3 of No. 15 can be performed even while the information in the memory is being transmitted.

When the external input NTSC signal selection switch 1 is pressed, the SWI in FIG. 1-2, 2. 3.4 respectively B.

Connect to the B, A, and B sides as well as the display L E D I
, 6 are turned on (L5 and L7 are turned off) (step 5-1
1). When external input or memory is selected as described above, the SWI is switched to the B side and the recording mode is automatically set. Immediately before such switching, the output of the level detection circuit 208 is determined to determine whether recording is possible or not, and lighting control of the L E D L 18 is performed.

If the function switch 42 is turned to the MONITOR side at step 5-12, the routine proceeds to step 5-13 and thereafter. 5-6.Same as explained in step 5-7, each time the color mode switch 37 is turned on in steps 5-13 and 5-14, the monitor mode number is incremented by 1 by modulo 6, and the monitor mode number is The color displayed on the monitor 3 is determined according to the number, and SW5 and L E D L l~L, 4-
, Li2 is controlled (step 5-15). The control sequence for each mode is set as shown in the table below.

Here, in the monochrome monitor mode, that is, when the contents of one of the memories 213 to 215 and 250 are to be reproduced on the monitor 230, the output of the selected memory is transmitted to the D/A converter 2.
By outputting signals to 16 to 218, the output of each memory can be reproduced on the monitor 3 as a luminance signal, that is, a black and white signal.

In this embodiment, the monitor mode 1 is selected by operating the switch 37, but the respective modes may be selected by determining the states of the switches 24 to 27.

Next, if the memory lock flag is 0 (step
5-16) Detect whether or not the input of the freeze switch 37 has been made. 5tep 5-17) If this is detected, the freeze operation from 5tep 5-18 onwards is performed. 5te
In p5-18, it is determined whether it is frame or field mode based on the ON/OFF state of LED8, and if it is field mode, the memory corresponding to the state of the field designation switch 43 is stored (odd line in the frame memory for field 1, frame memory for field 2). Freeze the even numbered lines in the memory (step 5-19), and if in frame mode, freeze the frame (write the same information to the odd and even lines in the frame memory) (step 5-19).
5-20), turn on L E D 17 (step 5
-23).

Furthermore, in step 5-21, it is checked whether or not the frame field setting switch 28 has been pressed, and if it has been pressed, the state of the field frame display LED 8 is inverted (step 5-22).

FIG. 6 is a detailed flowchart of the reproduction routine. When the memory lock button is pressed (step 6-1)
), depending on the current memory lock flag state (s t
e IJ 6-2 ), which is changed to the opposite value (step 6-3.6-4).

Next, there is an input of the track advance button (Up and Down) (step 6-5) If it is Up, 5 steps
If DOWn to 6-6, branches to 5step 6-8, respectively (step 6-5). In step 6-6, if the track position currently being accessed by the head 5 is less than the 50th track, the track number increases (inner circumferential direction).
The head is sent to (step 6-7), and 5step 6-
8, if the track position is greater than 1, the head is sent in the direction in which the track number decreases (toward the outer circumference) (s
step 6 9). In steps 6-7 and 6-9, the current track number is displayed on the 7-segment 1 LED 5.

When the head feeding is completed, the monitor 3 is switched to the SV playback side (step 6-10) in the same way as in step 5-9.

Then, if the memory lock flag MLF is O (step 6-1.1), it is determined whether the output of the level detection circuit 8 is at a predetermined level or higher.Step 6-12
), if the level is below the predetermined level, the process moves to step 6-1.3 or below, and if the level is below the predetermined level, the memory 213,
21.4.

Erase (replace with black level) 215 and 250 (s
step 6-25).

At this time, if necessary, the reproducing head that is in contact with the magnetic sheet may be placed in a non-contact state, and the operation of the reproducing signal system may be turned off.
You may take measures such as F.

At step 6-12, if the level detection circuit 208 output is above a predetermined level, the ID frequency multiplexed with the video signal is detected.
The signal is demodulated by the ID detection circuit 251 to reproduce ID data (step 6-]3). Based on this ID data, it is determined whether the reproduced video signal is an odd or even field of a frame image (s 1: e p 6-14.),
If it is a field image, the playback signal will be the field specified by the R, G, B frame memory switch 43,
For example, if field 1 is specified, it will be written on an odd line, and if field 2 is specified, it will be written on an even line (step
6-1.8). sl, if it is determined to be one field of the frame image in ep6-14, it will be 1 if it is the first field.
The head is shifted to the inner circumferential side of the track, or if it is the second field, to the outer circumferential side of one track (step 6-15).

The reason why such a head shift is necessary is that since the reproduction head is single in this embodiment, it is possible to freeze only one track at a time. Note that such a head shift is not necessarily necessary if the device has a multi-head (in-line head). Furthermore, when frame recording is performed, odd fields are recorded on the smaller track number, and even fields are recorded on the adjacent larger track number. When the head shift in 5tep 6-15 is completed, the output of the level detection circuit 208 is detected in the same way (5tep 6-16), and if the level is above a certain level, the ID data is reproduced.
p6-] Check whether the field signal is the other field signal that is paired with the field signal reproduced in step 5 (step 6-2
0), the video signal reproduced by the head 205 is frozen at the address corresponding to that field, the head is returned to the first track, and the field is frozen again (step 6-21).
).

5step6-10. 5. If only one field of the video signals constituting the frame is recorded in step 6-20, after returning the playback head to the first track (step 6-17), the unfrozen area of the frame memory is recorded. The other field is obtained by interpolating the average value of the upper and lower lines, and the information obtained by this interpolation is frozen (step 6-18) and converted into frame data (s
step 6-22). By doing this, Fig. 5 5te
A frame image with higher image quality can be obtained compared to framing when the input of p6-20 is an Sv reproduced image.

After freezing the reproduced video signal in accordance with the frame mode and field mode, the switch is changed to supply the memory reproduction signal to the monitor. Specifically, the same operation as 5tcp5-10 is performed (step 6
-23). Furthermore, in step 6-24, the frames and fields of the reproduced image are displayed based on the reproduction ID data.
E D 1. , 8. At this time, as described above, if the video signal to be frozen is a frame video signal, L E D L 8 is turned on, and if it is a field, it is turned off.

Next, the recording routine shown in step 4-5 shown in FIG. 4 will be explained using FIG. 7.

FIG. 7 is a flowchart 1 of the recording routine.

At step 4-3 in FIG. 4 above, the switch 5W-
1 is connected to the B side, that is, when it is detected that the switch 11.12 is turned on, the flow advances to the routine.

First, in step 7-], the presence or absence of an unrecorded track on the magnetic sheet l is detected, and if there is no unrecorded track, "Fj:J" is displayed on the 7 segment LED5, and a warning is displayed (step 7-7). ), if there is an unrecorded track, the LEDL is
18 is lit (step 7-3), and a recordable state is displayed. In this step, the above-mentioned SWI is once switched to the A side.

With L E D L 18 lit, press the record switch 9.
When is pressed (step 7-4), the magnetic seam 1-201
5 step 5-10. 5 Perform the recording operation on the memory other than the video floppy set in step 5-11 or the NTSC external source (step 7-5), and if there are no other unrecorded tracks (step 7-6), no further recording is possible. Therefore, the above-mentioned warning display indicating the disk FULL is displayed (step 7-7). If an unrecorded track still remains, the head automatically accesses the next unrecorded track (step 7-8).

Next, the transmission routine shown in step 4-7 of FIG. 4 will be explained using FIG. FIG. 8 is a specific flowchart 1 of the transmission operation routine. In this embodiment, the Interlab I operation is used for transmission and reception, and track advance is performed even during transmission and reception, making it possible to view reproduced images from the magnetic sheet.

First, at step 8-0, L E D L 1 /l is turned on, Li2 is turned off, and the transmission mode is displayed.

At 5step 8-1, determine whether it is auto transmission mode or not, and if it is manual mode, at 5step 8-2', set the LEDL.
17 goes out, and if it is in auto transmission mode, 5tep8-7'
Then, the process branches so that LEDL17 lights up.

First, let's start with manual mode. When the start switch 32 is pressed (step 8-2), the memory lock flag M is set to prevent the frozen still image information from being rewritten due to replay autofreeze.
Set LF (step 8-3).

Then, set the address (x, y) of the sending data to (0, 0)
(step 8-4-), and set the flag TXFLG indicating that transmission is in progress (step 8-4-).
step 8-5).

Then, the interlaced mask is reset to 0, and interlaced messages generated at each transmission/reception data interval, which will be described later, can be accepted. As a result of this operation, transmission is started by the next output of the interwoven counter 253. Further, a variable J representing the color range of the transmission mode determined according to the transmission mode number mentioned above is reset to the initial 0 (step 8-6').

On the other hand, in the automatic transmission mode, the flag A T
If the state of G has been set, the flow proceeds. Prior to transmission, the ATXFLG flag indicates the track number to be transmitted to track N in FIG. 1-2.

It is set to 1 by setting in the setting circuit 255, and when this is O, automatic transmission is not accepted and 5te
p8-24. (Details are shown in FIG. 11) The program proceeds to the l/rack number setting routine.

Next, track N is executed in 5tep8-24.

The setting routine will be explained using FIG. 11. FIG. 11 is a flowchart of the track number setting routine.

When the setting switch 260 is pressed once on the track number setting circuit 255 side (step H-1), the setting image number i is cleared to 0 and the state is the same as when the VF selection switch 10 was turned on, that is, the playback mode. Set. The monitor mode number will also be O (step 1
-2). Next, it is necessary to detect whether the track UP switch 263 of the remote control 255 has been pressed.
3) When detected, the head is moved one track in the inner circumferential direction (step II-4). Subsequently, in step 1-5, it is detected whether or not the track down switch 264 on the remote control side has been pressed, and if detected, the head 5 is sent toward the outer circumferential direction (step 1-6).

The inputs for these UP switch 263 and DOWN switch 264 are from the UP switch 1.9 on the main body side. The DOWN switch 20 may also be used.

Next, check whether the send]/decision switch 26 for inputting the rack number on the remote controller has been pressed (
step 1-7), when pressed, increments i (step 1-8), and stores the track number currently accessed by the head 205 as Tr (i) in the main body memory (step 1.) , −
9).

Until the end switch 262 is finally turned on to end the track number input on the remote control side, the
- After going through the loop of 3 to 5 steps pH-9, the input setting of l/rack number is not completed (step II-10)
.

When the end switch 262 is turned on, the value of i is input to the register N (5tepl]-]1), and 1 is assigned to the number N of still images to be automatically transmitted (stcpl1-15).
).

Check whether i is 0 (step 1-11), 0
If so, the track number has not been set, so please make sure that the automatic transmission settings are not performed.
Reset LG to O (step II-12).

Also, if i is not 0, one or more track numbers are set, so automatic transmission is possible.
Set FLG to 1 (step II
-13), set i=1 ((step II-1
4).

When the tracks to be automatically transmitted are programmed as described above, the flow advances to step 8-22 shown in FIG. 8, and the flow described later is executed.

In addition, in step 8-8, which is proceeded when the ATXFLG is set, it is checked whether the flag TXXFLG is 1, which does not indicate that the transmission is in progress, and it is checked whether the flag TXXFLG is 1 or not.
TXFLG-I), the following flow is omitted, and if transmission is not in progress, it is checked whether the start switch 22 has been turned on (steps 8-9). If the start switch 32 is pressed, the memory lock flag MLF
to prevent the automatic freeze operation and prevent the transmission data from being inadvertently rewritten (step 8-1).
0).

On the other hand, if the start switch 32 is not turned on, it is detected whether the variable i is "1" or not. If it is "1", the flow advances to 5step 8-22, and if it is not "1", the flow advances to step 8-22. The flow advances to 5TEP8-13.

If i is larger than N, that is, if it is incremented when it is detected that a video signal for one image has already been transmitted in the included routine described later (see step-fM described later), Ste. p 8-11
The flow branches to 5tep8-13. 5 step 8
-13, whether the variable i is larger than the number set in the register N, that is, l/rack number setting routine 5t
It is determined whether or not the video signals for the number of images to be transmitted set in ep8-24 have already been transmitted, and if they have already been transmitted, proceed to 5tep8-20, and if they are still being transmitted, proceed to 5tep8. The flow branches to -14.

In step 8-20, reset ATXFLG to "0" so that automatic transmission is not set.
In step 8-20), the memory lock flag MLF is also reset to "0" and the transmission state is released. In such a case, transmission is not indicated and the flag TXFLG is also reset to "0".

If it is determined in step 8-13 that the transmission is still in progress, set T

In the setting routine, the track No. Tr (i) corresponding to the stored reading is read out and the current head is
- Determine whether it exists on the rack Tr (i) (step 8-15). If it does not exist, Tr(
The head is accessed up to step 8-16), and the reproduced video signal is frozen in the memory (step 8-17).
).

Next, convert (x, y) to (0, 0) in the same way as when sending manually
5tep 8-18), reset the interlaced mask I RQ M S K to 0, and set the interlaced mask to a state where it is possible to receive it, so that the ink scrub routine shown in Fig. 10 is executed. (step 8)
-19).

Furthermore, reset ``same as 5tep8-6''' (s
tep8-19').

When the second transmission routine is completed, the following steps are performed to blink the display LED explained in FIG. 1-1 in accordance with the transmission color.

5. In step 8-22, it is determined whether "I'

The blinking LED corresponding to the transmission mode number and j is as follows.

(Transmission mode number, j) Flashing LED (0
(monochrome), O) L4 (Y) (l (two colors), O) Ll (G) (1, 1)
L2(R/B)(2,O) Ll(
R) (2,1) L2(G) (2,2) L3(B) (3,O) Ll(R) (3,1) L2(G) (a, 2) L3(B)(3
, 3) L4 (Bk) In addition, in the case of monochrome transmission mode, the LED corresponding to the switch coat SC blinks.

However, even if these LEDs blink, the lit LEDs other than the blinking LED selected in step 5-7 of Fig. 5 will maintain their lighting operation so that the progress status of the transmission can be seen. shall be taken as a thing.

Next, the receiving routine will be explained using FIG. 5tep
5 step 9-2 depending on whether the automatic reception mode is set by the automatic reception mode setting switch 8 in steps 9-1.
It branches into the following and 5tep9-14 and below.

If the automatic reception mode is not set with switch 8 and the reception mode is manual, when the reception start button is pressed in step 9-2, the synchronization section (step 9-3
), the white portion (step 9-4-) is detected, and the gain is adjusted at the same time as the white portion is detected (step 9-5). Next, the data section is read to capture the ID data (step 9-6).

Furthermore, 5 step 9-3. In step 9-4, if the white part or the synchronous part is not detected even after the predetermined time has elapsed, the process moves to step 9-39. Furthermore, when a blank section is detected (step 9-7), the memory lock flag M is set to prohibit memory freeze during video floppy playback.
Set LF (step 9-8), data address (
Initialize x, y) to (0, 7) (step 9-9)
. This corresponds to the fact that the video section starts at Y address 7 as shown in FIG. Next, set the receiving flags R, X F L G (5step 9-10)
, reset the included counter 5step9-1
1) Reset the included mask TRQMSK (step 9-12). By this operation, the video data inputted from the transmission line can be taken in sequentially from the next interwoven.

Furthermore, a variable j representing the number of colors in the transmission color mode is set as the first
The color is reset to j=o (step 13).

Next, the flow in the automatic reception mode from steps 9 to 14 will be described. To perform automatic reception, first determine whether there is a free space for recording on the magnetic disk (step 9-14). If there is not, a warning of "F, (I+) will be displayed on the display 5 as described above. Display (step 9-36), and do not perform the automatic reception flow. If there is an empty track, it is determined whether the head currently exists on the first unrecorded track (step 9-15). If it does not exist, access the head to that position and prepare for recording (step 9-16).
). When this is finished, the number of records that can be automatically received and recorded (the number of remaining tracks) is displayed on the 7-segment l□LED5 (st
ep9-17).

Next, it is checked whether or not reception is currently in progress and the reception flag RXF is checked.
If LG is O, that is, in a non-receiving state, the process advances to step 9-3, and the above-mentioned synchronization section is detected. Here, the algorithm is used to terminate the routine if the synchronization part does not appear after a certain period of time.

If it is in the receiving state at step 9-18, the above-mentioned s
Since reading of the data section (transmission data and ID data) has been completed at t e p 9-6, the next step is 5 te.
p9-20 is executed.

If the reading of the data part (see FIG. 2) obtained during reception has been completed and the data indicates the frame transmission mode (step 9-20), in order to record the received video signal on the magnetic sheet 201, Empty tracks for two fields, ie, two tracks, are required. Therefore, s
At step 9-21, it is determined whether there are two or more empty tracks.

5step9-20. If it is determined in 9-21 that each track is in field transmission mode and there are two or more empty tracks, then
Move to the routine from p9-27 onwards.

Such a determination is possible because, as shown in FIG. 2, data indicating whether the mode is field transmission mode or frame transmission mode is sent prior to the video signal.

If the flow advances to step 9-21, there are no two or more unrecorded tracks (i.e.,
■If only the track exists, the reason is 5 steps.
Since it has already been detected at 9-14 that there is an empty track, only one track exists in this case. ), the reception mode is frame, so there will not be enough tracks for frame recording. Therefore, in this embodiment, the video signal reproduced from the magnetic sheet 201 on the transmitting side by detecting bit 8 of the ID data transmitted in the data section (see FIG. 2) obtained during reception in step 9-22 is It is determined whether the video signal is obtained by field recording or frame recording. If the video signal is obtained by frame recording, the flow advances to 5step 9-36 and a warning that recording is not possible is issued. will be carried out. Also, the interpolation operation on the transmitting side is performed using the video signal obtained by field recording (Fig. 6, step 6-).
When a video signal converted into a frame signal is transmitted according to the method (see 22), the sequence is such that the transmitted frame video signal is recorded as a field video signal on one track after reception is completed.

This sequence is possible because the ID data is transmitted prior to the video signal as described above. Therefore, the effect of transmitting the ID data prior to the video signal is very large.

From step 9-22 onwards, the flow described in "2" will be explained.

In step 9-22, bit 8 of the ID data is checked as described above, and if the video signal is obtained by frame recording, a warning is given in advance (step 9-36). Even during this time, the reception operation continues due to interwoven, so after the reception is completed, there are two
It is sufficient to replace the jacket with the magnetic sheet having 1-rack or more of unrecorded tracks.

If it is determined in step 9-22 that the video signal is a video signal obtained by field recording, the line currently being received is j - "transmission mode number", that is, the YC line of the data for the last frame received. is also large (s
tep9-23). Here, YC may be any value that allows sufficient time for the rotational drive of the magnetic sheet 201 to be started and for the rotational control by the motor drive circuit to be stabilized before the reception of the final line YE is completed. When this condition is satisfied in step 9-23, the magnetic seam 1-201 is rotated (step 9-24), and when reception is completed (step 9-24),
ep9-25), when reading video from one field in one frame, that is, from the memories 213, 214, and 215, every other line is read out and recorded on one track (step 9-26). Next, the flow is 5t, which will be described later.
Move to ep9-32.

On the other hand, regardless of whether the received signal is a signal transmitted by field transmission or frame transmission, if there are two or more unrecorded tracks, the flow branches to the aforementioned 5tep 9-27, and is similar to 5tep 9-23 to 9-25. The sequence of 5
Perform steps 9-27 to 9-29.

Depending on whether the reception mode is field transmission or frame transmission at step 9-29, step 9-31. 9-32 or 5
tep9-33. Branch to 9-34 (step 9-
30).

In the case of field transmission mode, memory 2 after reception is completed.
The memory 213 to 215 and 256 are read out one line at a time even in field transmission mode.
215, 256 in this case the memory controller 2
23, a signal that has been subjected to real-time interpolation processing is written in advance. ), records on one track (s
tep9-31). The ID signal received at this time may also be frequency-multiplexed again, added to the video signal, and recorded.

When the recording is completed, the number of empty tracks is reduced by 1 along with the branch from step 9-26, and the LED 5 shown in Figure 1-1 is displayed.
Second, the number of tracks is displayed (step 9-32).

On the other hand, if received in frame transmission mode, each field is recorded on a separate track (step 9-3).
3). In this embodiment, since the head 5 is single, the number of steps is 5 steps.
9-33, in the first track, the memory 213~
2] Read and record the first field from 5,256,
Next, the head 5 is accessed to another unrecorded track to read and record the second field. In addition, in a device with an in-line head, two
Fields can be read from the memories 213-215, 256 and recorded without moving the head.

When recording is completed, the number of unrecorded tracks is subtracted by 2 (ste
p9-34), stop the rotation of the magnetic sheet (step
9-35). This is to reduce wear on the head and magnetic sheet as well as to save power. Next, since reception is complete, RXFLG is reset (step 9-3).
7). Then, check whether the remaining number of recordable tracks is zero (step 9-38), and if it is zero, automatic reception recording is no longer possible, so the flow is 5step 9-3.
Proceed to step 6 to issue a warning.

In addition, when the reception of one video signal is completed by resetting RXFLG in 5tep9-37, the above-mentioned 5step9-1 to 5step9-18 are executed by once setting RXFLG.
The flow branches from tep9-18 to 5tep9-3,
The operations from step 9-3 described above are executed. Therefore, from 5tep9-3 to 5t until the synchronization part is detected.
The flow jumps to ep9-39.

When the above reception routine is completed, the display LED explained in Figure 1-] should be blinked according to the reception state (the following 5 steps are performed).

In step 9-39, it is determined whether the receiving flag RX F L G is set, and if it is set, the LED (transmission mode number, D) corresponding to the color currently being received is controlled to blink (step 9-40). .The LED corresponding to the transmission mode number and j is shown in Figure 8, step 8-2.
It may be the same as explained in 3.

In addition, even if these LEDs blink as in the case of transmission, the transmission mode (monochrome or monochrome transmission mode, two-color transmission mode, three-color transmission mode, four-color transmission mode) selected in Fig. The lighting LED indicating the mode) and the lighting LED corresponding to the other colors to be received shall maintain their lighting operation.

Therefore, for example, when the three-color transmission mode is set as the transmission mode, the LED LIO lights up, and the LED LIO lights up while the signal to be written to the R memory 213 is being received.
E D L 1 is blinking LED L2. L3 lights up, then while receiving the signal to be written to the G memory, LED L2 blinks, LEDLI lights up, and L3 lights up.
L while receiving the signal to be written to the B memory.
E D L 3 is blinking LED LI, L2 is lit. Therefore, the reception status can be displayed in an easy-to-understand manner for the user.

Next, an interlaced routine for transmitting and receiving video signal data will be explained using FIG. 10. 5
teplO-1 checks whether the stop switch 33 for stopping transmission/reception is turned on or not, and if there is a stop input, the RX F
Reset L G or T X F L G (s
teplo-2). Then set T R, Q M S K to prohibit interlaced 5teplo-3)
, reset MLF to release the memory lock (steps 0-4). If a stop input is not made at 5teplo-1, interloved will:
5teplO-6 depending on transmit mode or receive mode
Branch below or 5tep1.0=38 or below (
s te p 10-5).

TXFLG=1, that is, in transmission mode, 5teplo-
6, if the number Y of vertical lines is 0 or more and 2 or less, that is, it is a synchronization part (see FIG. 2), then a synchronization pattern is created in accordance with the horizontal address X in 5teplO-7 or less.

If X is greater than or equal to 0 and less than or equal to 4, it corresponds to the high level part of the synchronization part, so set the output data D (X, Y) to FF" (8 bits, maximum level 255) and do 5 tepl.

-8), otherwise set D (X, Y) to oo' (lowest level O) (step-9).

If Y is 3 or more and 4 or less, it corresponds to the white level part, so all data D (X, Y) are set to FF" (st
eplo-10, 11).

If Y is 5, it is the data part, so the transmission data D (X, Y) corresponding to the horizontal address
.

If Y is 6, it is a blank section, so D (X, Y) are all set to 00'' (steps 14 and 15).

Data D (
The memory controller 223 is operated to output the data (X, Y) to the D/A converter 226 (step 1).

-20). When data is output, the address of The number Y of vertical lines is determined accordingly, and the data D (X, Y) of the video signal to be output is determined.

Before proceeding to the determination of step 5teplo-16, the following flow is performed so that the transmission field in the field mode is selected by the state of the field selection switch 43.

When the switch 43 is set to the second field, in order to make the data to be transmitted a signal written to all the even lines in the memory line Y, it is determined in 5teplo-60 whether Y is an even number or not. If is an odd number, increment this by 1, and then 5teplO-2, which will be described later.
7 so that all even numbers are selected (step-
6]). Also, if 5teplo-59 is selected as the first field, this 5tep will initially include Y-7 (
Since the flow starts with an odd number), 5teplo-
Considering the steps shown in 27, the data to be transmitted is transferred to 5teplo-6 of the odd line in line Y of the memory.
Skip step 1 and move on to the next 5 steps.

5teplo-16, the transmission mode number is “1” or “
2”, that is, in 2-color mode or 3-color mode,
It is assumed that the frame memory used for data reading is determined as follows.

(Transmission mode number, j, vertical line Y) Selected memory (1, O, all lines) G (1+”+ odd number) R (1,], even number) B (2, 0, all lines) R (2 , 1, all lines) G (2, 2, all lines) B In step-17, according to this, the transmission data D
(X.

Y) is read from each hue frame memory.

Next, when 5teplo-16 determines that the transmission mode number is "3", that is, 4-color mode, the transmitted data becomes R, G, B data with under color removed and black data Gk, and the data is converted by the following calculation. formed (steplO-19)
.

When j=0 D (X, Y) = R (X, Y) - Bk
(X, Y) When j=1 D(X, Y) −G(X,
Y)-Bk(X, Y) When j=2 D(X, Y)=
When B(X, Y)-Bk(X, Y)j=3, D(X
, Y) = Bk(X, Y) where Bk(X, Y) = kXmjn(R(X, Y), G(X,
Y), B(X, Y))k: Predetermined coefficient.

m i n represents the minimum of the three.

In 5teplo-16, the transmission mode number is “0″’, that is,
It is determined that the mode is monochrome or monochrome mode, and the monochrome transmission mode flag M is set at step 5-27 shown in FIG.
If CL F L G is not set and the monochrome transmission mode is not set, only the luminance signal Y will be sent as data, but in order to obtain such data, D (X, Y)
= 0.59 X G (X, Y) + 0.30
X R (X, Y) 10, 11 XB (X, Y) is calculated (step o-18). Nao R (X, Y)
.

G(X, Y) and B(x, Y) are respectively stored in the memory 213~
This is the data at address (x, y) of 215. Also M
If CL F L G is set, s t
e Switch code set in p 5-28, transmission mode number and vertical line Y when it is set
The video signal data D (X,
Y) is set.

1 10 All lines G(X,Y)1
01 odd number R(X,Y)1 0
1 Even number B(X, Y)2 00 All lines R(X, Y)2 01 All lines G(X, Y)2 10 All lines B(X, Y)3 00 All lines R(
X, Y) -Blc(X, Y)3 01
All lines G(X,Y)-Bk(X,Y)3
10 All lines B(X,Y)-Bk(X,Y
)3 11 All lines Bk, (X, Y)
Here, Bk(X, Y) = k X min (R(X
, Y), G(X, Y), B(X, Y) ) (k: predetermined coefficient, min represents the minimum of the three) Data D (X, Y) is set in this way Then, if Y>6, that is, during the video period, if X=O at 5teplo-55°56, which will be described later, the data D (X, Y) is rewritten to FF", that is, the white peak level. This is because if there is a wide area, there will be no signal over many lines, and the receiving side may mistakenly judge this as an interruption of transmission. This can be prevented by generating a signal.

Data D at each address (x, y) obtained in this way
(X, Y) to the D/A converter 226 (step
lO-20). When the data is output, the address of X is 1
Increment L (stepO-21,), which is thicker than the final address If Y is 6 or less, that is, it is a non-video part such as a synchronization part, increment by 1 at 5teplO-26, and if Y is greater than 6, that is, it is a video part, it is detected whether the transmission mode is frame mode or not. Shiku5teplo
-25), as a result, in frame mode, all vertical lines are transmitted, so Y is incremented by 1 in 5 teplo-26, and in field mode, in order to transmit vertical lines one by one, Y is incremented by 1. ．．
At o-27, Y is incremented by 2.

When the value of Y is increased in this way, it is checked in step 0-28 whether the value is larger than the final line YE of Y or not (step 0-28). Therefore, increase j by 1 (ste
plO-29). As a result, if the variable j is smaller than the value of the transmission mode number (step O-30), then
Reset Y to 0 to move on to transmitting the next color signal (
stcplo-31). If the variable j is not smaller than the transmission mode number, ATXFI determines whether G is "1" or not (step 10-54), and if it is "1", increments i). do (steplo)
-54).

Next, reset T X F L G (step
lo-32), release the memory lock (reset MLF l-L/ (sl:eplo-33), set IRQMSK to disable inclusion (step
lo-34).

Next, included processing when RX F L G = 1, that is, in the reception mode, will be described.

As explained in FIG. 9, upon reception, s t,
After executing steps 9-2 to 5steps 9-7 and detecting the blank portion shown in FIG. 2, the memory address (X,'+7) is (0,7) at step 9-9
is initialized to , the receiving solag RX FL G is set (st, ep 9-10), and the inrupt mask flag I RQ M S K is reset] (
step 9-12).

Only in such a state can the in-club process in the reception mode be performed. That is, the receiving flag RXFLG
is set to 1, so 5 tepl.

At -5, the flow branches to 5teplo-38.

At 5teplO-38, data is read from the A/D converter 224, and the data is (transmission mode number, j.

Write to the memory specified by y) (step-3
9).

Note that Y=7 at the time of initial setting.

Next, check whether bit 3 of the received transmission data is "0" or "l", that is, the normal color transmission mode (monochrome,
2 colors, 3 colors, 4 colors) or single color transmission mode (R, G,
B, Bk, etc.).
tep] branch to 0-39 or 5teplo-60 (
steplO-59). At 5teplO-39, the data should be stored as follows (frame memory is selected) according to the transmission mote number, variable j, and Y.

(Transmission mode number + j + vertical line) Selected frame memory (0 (monochrome), 0. all lines) G (
1 (2 colors), O2 all lines) G (1, 1, odd number
) R (1, l, even number) B (2 (3 colors), 0. all lines) R (2, 1, all lines) G (2, 2, all lines) B ・(3 (4' colors), 0.All lines) R(3,1,
All lines) G (3+2+ All lines) B (3, 3, All lines) Bk Also, if bit 3 is “B”, that is, monochrome transmission mode,
The received data D (X, Y) is written into the frame memory according to the transmission mode number, switch code, and vertical line Y in the transmission data (step
lo-60).

The correspondence is as shown below.

01 00 All lines Golol
Odd number Rolol Even number B 10 00 All lines R100:
All lines G 10 10 All lines BIl,
00 All lines R1101 All lines G 11 ]O0 All lines B11
II All lines Bk onwards'' A memory to which data is to be written is selected as shown in 2, and when one piece of data is taken into such memory, X is incremented by t.
steplo-4,0), the result is the final address
If it becomes larger than E (step-41), set X to 0.
Reset I・L/ (stepl.

-42), 5step] Increment Y according to the same idea as 0-24 to 27 (step 1
0-43 to 46). When the result is larger than the end address YE (steplo-47), in order to proceed to the next color, j is increased by 1 (stoplo-/I8), and as a result, if the value of j is smaller than the value of the transmission mote number ( ste
plO-49), reset Y to 0 LL/ (step
lo-50), if it becomes large, it means that reception has ended, so you should release the memory lock (reset MLF).
Set TRQMSK (step O-52).

Especially when in two-color mode, the R signal and B signal are
Since the signals are stored in the R memory 213 and the B memory 215, respectively, when recording the received signals on the magnetic sheet 1, it is not possible to encode the luminance signal in the color difference matrix circuit 219 by simply reading out the memories 213 and 215 as they are. , lines without data must be interpolated line-sequentially using the preceding and succeeding lines. Such operations are performed in real time in the memory controller 223 in parallel with reception.

In the second embodiment, analog transmission was considered, but it goes without saying that the present invention is not limited to this, and the present invention can also be applied to digital transmission.

Additionally, in this embodiment, we have considered the case where only one jacket is used, but the number of sheets that can be automatically received and automatically recorded can be increased by considering an auto changer that can change multiple jackets as appropriate. .

Furthermore, in this embodiment, depending on whether the playback ID signal is field or frame, the mode for freezing the frame memory is set to field or frame mode, respectively, but it is possible to freeze frame mode images in field mode. A switch may also be provided.

Further, in this embodiment, a system having a single field head was considered, but it goes without saying that a system having an in-line type frame compatible head can also provide similar effects.

In the above embodiments, a magnetic recording medium is used as the recording medium, but other recording media, such as a rewritable optical recording medium, may be used.

In the embodiment of the invention described above, the data portion (see page 25) is transmitted to the outside together with the still image information, as shown in FIG.

Furthermore, when transmitting the ID data, the integrity of the data is lost, but such loss can be eliminated by transmitting the ID data and the video signal in a time-division manner, as in the Kinomi style. Furthermore, by transmitting the ID data prior to the video signal, the receiving side can perform a more effective operation.
It becomes possible to prepare to record the received video signal at a position corresponding to the track number included in the D data.

[Effects of the Invention] As explained above, according to the invention, both the still image video signal recorded on the recording medium and the data i No. 5 are transmitted to the outside, so the data signal is effectively transmitted without being lost. Available.

[Brief explanation of drawings]

Figure 1-1 is a front view of an apparatus according to an embodiment of the present invention;
Fig. 2 is a block diagram showing the configuration of the device shown in Fig. 1-1, Fig. 2 is a time chart showing data transmitted by the device shown in Fig. 1-1, and Fig. 3 is a block diagram showing the configuration of the device shown in Fig. 1-1. Diagrams showing each address of memories 213 to 215.250, and FIGS. 4 to 11 are diagrams showing the control circuit 100 shown in FIG. 1-1.
This is a flowchart 1 for explaining the operation. 100... Control circuit, 201... Magnetic sheet, 205... Fist head, 235... Display circuit

Claims (2)

[Claims] (1) A still image transmission device that reproduces the still image signal from a recording medium on which the still image video signal is recorded together with a data signal related to the video signal and transmits the still image signal to the outside. A still image transmission device characterized in that the data signal is also transmitted to the outside. (2) The still image transmission device according to claim 1, wherein the still image video signal and the data signal are transmitted in a time-division manner in a predetermined order.