JPH04616Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a video camera device having a function of recording date and time on a videotape together with video information.

[Prior art]

Conventionally, video camera devices have been developed that have the ability to record text information such as date, time, etc. on videotape along with video information; for example, the video camera VK-C3400 manufactured by Hitachi, Ltd. 3 and 4 show the display screen 1 and key operation section 21 of the electronic viewfinder.

As shown in FIG. 2, the key operation section 2 includes a start/stop switch key 2a and a reset key 2b for the stopwatch, as well as a date/time switch key 2 for switching the year, month, day, and time.
c. Setting of year/month/date characters and time characters. Left feed key 2d and right feed key 2e for sequentially moving the digit display bar to the left and right. Down key 2 for matching characters to sequentially send the characters of the selected digit from "0" to "9" in reverse and forward directions.
f and up key 2g are provided,
In addition, a title key 2h and an intermittent shooting key 2i are provided on the key operation section 2.

Next, to explain the operation when setting characters for the date or time to be recorded on a videotape, for example, as shown in Figure 1, October 24, 1984.
The date character “84:10:24” indicating the day is displayed on screen 1.
If the date of photographing is different from the displayed date when the date is displayed in the lower left corner of , the year, month, and day characters on the display screen 1 must be changed.

Now, on the display screen 1, a black setting digit display bar 3 as shown in Figure 1 appears and disappears at approximately 1-second intervals below any digit of the year, month, and day. It is displayed that the "8" digit of the year character "84", that is, the 10th digit of the year character, is the digit that should be changed, and the left feed key 2 of the key operation section 2 is displayed.
Each time d is pressed, the display bar 3 sequentially moves each digit of the year, month, and day characters to the left, and each time the right feed key 2e is pressed, the display bar 3 moves each digit of the year, month, and day characters to the right. It will be sent sequentially to

At this time, by pressing the left feed key 2d, the display bar 3 changes each digit of the year, month, and day characters to "4", "2",
“0”, “1”, “4” are sent sequentially to the left and “8”
When , the display bar 3 returns to the rightmost digit "4", that is, the 1 digit of the Japanese character, by the next press operation of the left feed key 2d, and this is repeated, and when the right feed key 2e is pressed. At the time of operation, the operation is opposite to that when the left feed key 2d is pressed.

Note that the display bar 3 is displayed only on the display screen 1 and is not recorded on the videotape.

Then, the year, month, and day characters on display screen 1 “84:10:
24” indicates the shooting date, February 20, 1985, “85:
02:20”, press the left feed key 2d or right feed key 2e on the key operation unit 2 to move the display bar 3 to the date character “84:10:24”. After setting the “4” digit, that is, the 1 digit of the year character, press the down key 2 on the key operation section 2.
When f or the up key 2g is pressed, the character "4" of the digit set on the display bar 3 is changed to "5", and the date character on the display screen 1 is changed to "85:".
10:24”.

Furthermore, left feed key 2d or right feed key 2
After setting the display bar 3 to the "1" digit of the "10" of the year/month/day character "85:10:24" by pressing e, that is, the 10th digit of the month character, press the down key 2f.
Alternatively, press the up key 2g to change the character "1" in the setting digit of the display bar 3 to "0", and then press the left feed key 2d or right feed key 2e to change the display bar 3 to the next digit to the right. 0", that is, shift to the 1 digit of the month character, press the down key 2f or up key 2g to change the character "0" of the set digit on the display bar 3 to "2", and then press the left key 2d or right key After setting the display bar 3 to the "4" digit of the Japanese character "24", that is, the 1 digit of the Japanese character by pressing 2e, press the down key 2f or the up key 2g to set the display bar 3 to the set digit. If you change the character “4” to “0”,
The year, month, and day characters on the display screen 1 are changed to "85:02:20", indicating February 20, 1985, and the setting for changing the year, month, and day characters is completed.

On the other hand, the setting to change the time character is also performed in the same manner as the operation when changing and setting the date character described above.

Also, similar to the video camera device described above, Japanese Patent Laid-Open No. 58-143674 was developed as a device for recording character information such as date, time, etc. on video tape along with video information.
There is something described in the publication.

[Problem that the invention attempts to solve]

However, in both the video camera device manufactured by Hitachi, Ltd. mentioned above and the video camera device described in the above-mentioned publication, it is necessary to make sure that the date characters etc. do not interfere with the video content recorded on the videotape. Since the size of the year, month, and day characters, etc. is limited to a small size, the year, month, and day characters on the display screen 1 of the electronic viewfinder are extremely small. There is a problem in that the user must alternately repeat the key operations (2) and checking the characters on the display screen 1 by looking through the peephole of the electronic viewfinder, which is extremely troublesome.

Therefore, when changing the date, month, and day characters, etc., if you take your eyes off the electronic viewfinder peephole and operate the keys on the key operation section 2 while looking at the display screen 1, the year, month, and day characters on the display screen 1 will change. is so small that the characters cannot be identified, making it impossible to take one's eyes off the peephole of the electronic viewfinder, making handling undeniably inconvenient.

[Problem that the invention attempts to solve]

This invention was made with the above points in mind, and includes a key operation section consisting of a plurality of keys such as a selection key and a setting key, and characters that form the date and time by operating the selection keys. A character signal output means for selectively outputting a signal, a superimposition means for superimposing the character signal on a luminance signal, a viewfinder driving means for displaying date characters and time characters based on the character signal on an electronic viewfinder, and the setting. Prohibition means for prohibiting output of the character signal to the superimposing means during the character change setting period by key operation; This is a video camera device equipped with an enlarging means for enlarging the image.

[Effect]

Therefore, in the video camera device of this invention, the character signal from the character signal output means is superimposed on the luminance signal by the superimposing means, and the date and time characters based on the character signal displayed on the electronic viewfinder are displayed on the video. During the setting period when the year, month, date, etc. are changed by operating the setting keys on the key operation unit, the output of the character signal from the character signal output means to the superimposing means is prohibited by the prohibition means, and the year, month, date, etc. are recorded on the video tape. At the same time, the date and month characters are prevented from being recorded, and at the same time, the date and time characters are enlarged and displayed on the electronic viewfinder by the enlarging means.

〔Example〕

Next, FIG. 1 and FIG. 2 showing one embodiment of this invention will be explained.

In FIG. 1, 4 is an optical system that forms an image of the subject T on imaging means 5 consisting of an image pickup tube, 6 is a signal processing means that processes the output signal from the imaging means 5 and outputs a luminance signal, and 7 is A first adding means is a superimposing means that adds and superimposes a character signal, which will be described later, on the luminance signal from the processing means 6 and outputs it to the recording and reproducing device of the video tape recorder via the buffer means 8 and the output terminal 9; 10 is a key; The first key 10a, which is an operation part and is a selection key for selecting the year, month, day, and time, and the second key 10b for moving the position of the setting digit display bar B, and the A third key 10c for character matching that sequentially sends the characters of the digit set by the display bar B, for example from "0" to "9", and a fourth key 10d for changing and setting and canceling the date characters and time characters. One end of each key 10a to 10d is grounded.

Reference numeral 11 is a microprocessor (hereinafter referred to as CPU) whose input terminal is connected to the other end of each key 10a to 10d, and which outputs a control signal based on the operated key to a character generation means to be described later and controls the means in a predetermined mode. , and outputs a prohibition control signal to an AND gate, which will be described later, during a setting period for changing the date, month, date, etc. characters by operating the fourth key 10d. Reference numeral 12 denotes a character generating means consisting of a character display LSI, model number MB88313 manufactured by Fujitsu Limited, for example, and a built-in ROM type card is activated by a predetermined control signal output from the CPU 11 in accordance with key information from the key operation unit 10. Predetermined character data is selected from the character generator and determined by the built-in horizontal and vertical position controller based on HSYNC and VSYNC to the horizontal synchronization signal (HSYNC) input terminal 12a and vertical synchronization signal (VSYNC) input terminal 12b, respectively. a built-in horizontal,
A predetermined character signal is outputted from a character signal output means (not shown) in order to display a character based on the selected character data in a size determined by a vertical character size control section.

At this time, if only the first key 10a is operated, the character generating means 12 is controlled to the normal display mode by the CPU 11, and the date or time characters are displayed in small letters in the lower left corner of the display screen of the electronic viewfinder, which will be described later. is displayed, and when the fourth key 10d is operated, the CPU 11 controls the character generation means 12 to change setting mode, and the position control section and the dimension control section, which are enlargement means, change the display screen of the electronic viewfinder to be described later. In the center of the screen, the year, month, and day characters or time characters are displayed enlarged to a predetermined size compared to the normal display mode.

13 is a second addition means for adding and superimposing the character signal on the luminance signal from the processing means 6; 14;
The luminance signal on which the character signal is superimposed is inputted via the buffer means 15, and the date characters or time characters based on the character signal are displayed on the display screen 17 of the electronic viewfinder 16 as shown in FIG. Viewfinder driving means for causing
8 is an AND gate that is a prohibited means, and the CPU
While the prohibition control signal is not outputted from the CPU 11, the character signal from the character generation means 12 is outputted to the first addition means 7, and while the prohibition control signal is outputted from the CPU 11, the first character signal from the character generation means 12 is outputted. Output to the adding means 7 is prohibited.

Next, the operation of the embodiment will be explained.

Now, when recording the date on videotape,
By operating the first key 10a of the key operation unit 10,
For example, as shown in FIG. 2, in the lower left corner of the display screen 17, date characters "84:
When "10:24" is displayed in a small size and the year, month, and day of the photographing date differs from the year, month, and day displayed on the display screen 17, the year, month, and day characters on the display screen 17 are changed.

First, change the date characters on the display screen 17 to “85:02:” which indicates the actual shooting date, February 20, 1985.
20”, by operating the fourth key 10d of the key operation unit 10, a prohibition control signal is output from the CPU 11 to the AND gate 18, and the first
The output of the character signal to the addition means 7 is prohibited, and the output of the character signal to the CPU 1 based on the operation of the fourth key 10d is prohibited.
The character generating means 12 is controlled to change setting mode by the control signal from 1, and the display screen changes as shown in FIG. The year, month, and day characters “84:10:24” that were displayed small in the lower left corner of 7 are displayed on display screen 1 along with display bar B.
It is enlarged and displayed in the center of 7.

Next, as shown in FIG. With display bar B set, press the second key 10.
When you operate b, each time you operate the second key 10b,
Character data is selected from the character generator of the character generator 12 to sequentially move the display position of the display bar B, and the selected new character signal is output from the character generator 12, so the second key 10b is pressed. is operated appropriately to set the display bar B on the display screen 17 to the "4" digit of the character "84", that is, the 1s digit of the year character.

Note that each time the second key 10b is operated, the display bar B on the display screen 17 is shifted to the right.

Furthermore, when the third key 10c is operated after setting the display bar B to the 1s digit of the year character, the character data of the digit to which the display bar B is set is newly selected from the character generator of the character generating means 12. A character signal including the selected new character data is output from the character generating means 12, and the third key 10
For each operation of c, the character of the digit set by the display bar B on the display screen 17 is increased and changed from "0" to "9", so by appropriately operating the third key 10c, Change the character “4” in the 1s digit of the year character to “5”.

Thereafter, repeat the above-mentioned operation, operate the second key 10b to set the display bar B to the 10th digit of the month character, and operate the third key 10c to set the 10th digit of the month character.
Change the character of the digit from "1" to "0", then operate the second key 10b to set the display bar B to the 1s digit of the month character, and operate the third key 10c to change the character of the month character. Change the character in the 1 digit from “0” to “2”,
Then, operate the second key 10b to set the display bar B to the 1s digit of the Japanese character, and operate the third key 10c to change the character of the 1s digit of the Japanese character from "4" to "0". As a result, the date characters on the display screen 17 are changed from "84:10:24" to "85:02:20" indicating February 20, 1985, and the date character change setting is completed. .

In addition, the period for changing the date characters mentioned above,
The date characters on the display screen 17 are kept in an enlarged state as shown in FIG.
Since the output of character signals to the video tape is prohibited, character information such as year, month, and day will not be recorded on the videotape.

Further, when the setting of changing the year, month, and day characters is completed as described above, by operating the fourth key 10d again, the output of the prohibition control signal from the CPU 11 is stopped, and the output from the AND gate 18 to the first addition means 7 is stopped.
The character signal is again outputted, and the character generating means 12 is again controlled to the normal display mode by the control signal from the CPU 11 based on the operation of the fourth key 10d, and the character signal is newly changed by the above-mentioned change setting operation. Based on the character signal of the characters, the year, month, and day characters "85:02:20" are displayed in the lower left corner of the display screen 17 in a smaller size together with the display bar B, and at the same time, the aforementioned year, month, and day characters "85:02:20" are displayed. ” recording of the text information onto the videotape is resumed.

In addition, when displaying time characters, it goes without saying that the characters can be changed and set in the same manner as described above.

[Effect of idea]

As described above, according to the video camera device of this invention, when changing the date characters or the time characters, the display screen 17 of the electronic viewfinder 16
Since the year, month, day, and time characters are enlarged and displayed at the top, the characters on the display screen 17 can be identified even if you take your eyes off the viewing window of the viewfinder 16. It is now possible to check the keys on the operating section 10 very easily, eliminating the need for the conventional process of alternately identifying characters by looking at the peephole of the viewfinder and checking the keys on the key operating section. This makes handling extremely easy, and the effect is remarkable.

Furthermore, during the character change setting period, the output to the first addition means 7 is prohibited by the AND gate 18, so the enlarged date characters or time characters are not recorded on the videotape, and It is possible to prevent the video information recorded in the image from being disturbed by date characters, etc.

[Brief explanation of drawings]

1 and 2 show one embodiment of the video camera device of this invention, FIG. 1 is a block diagram, FIG. 2 is a front view of an example of a display screen of an electronic viewfinder, and FIGS. The figure is a front view of a display screen of an electronic viewfinder of a conventional video camera device and a key arrangement diagram of a key operation section. 7...First addition means, 10...Key operation unit, 1
0a, 10b...first and fourth keys, 12...character generating means, 14...viewfinder driving means,
16...electronic view finder, 18...and gate.

Claims (1)

[Scope of utility model registration request] a key operation section consisting of a plurality of keys such as a selection key and a setting key; a character signal output means for selectively outputting a character signal forming a date, time and date by operation of the selection key; a superimposing means for superimposing on a luminance signal; a view index driving means for displaying date characters and time characters based on the character signal on an electronic view index; A video camera device comprising: a prohibition means for prohibiting output to the superimposition means; and an enlargement means for enlarging the date character or the time character displayed on the electronic viewfinder during the character change setting period.