JP2534496Y2 - Character screen signal generator - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is applied to, for example, O
The present invention relates to a character screen signal generator suitable for application to an SD (On Screen Display) function unit.

[Prior Art] Conventionally, in order to facilitate setting of timer recording in a VTR, a character screen signal for displaying a setting screen or the like is supplied to a television receiver at the time of this setting, and a setting screen or the like is displayed on the television screen. Some have OSD functions.

[Problem to be solved by the invention] In a complicated OSD function, a plurality of character screens are used.
For example, when timer recording is set, a setting screen is displayed first, then a calendar screen is displayed for confirmation of the day of the week, and after confirmation of the day of the week, the display returns to the setting screen.

In this case, there is an inconvenience that the setting screen is not displayed when the calendar screen is displayed.

In addition, in order to facilitate a setting operation, it has been proposed to display a procedure at a lower portion of a setting screen or the like.

However, this has the drawback that the procedure is not sufficiently explained, and that the entire procedure is difficult to understand because the display content changes for each operation.

Accordingly, the present invention provides a character screen signal generator capable of eliminating the inconveniences and disadvantages as described above.

[Means for Solving the Problems] The present invention provides a character generator that generates a character screen signal of one screen during a horizontal blanking period and generates a character screen signal of another screen during a horizontal video period, A memory for storing the character screen signal of the one screen generated by the generator, a memory readout circuit for reading a part of the character screen signal of the one screen from the memory, and the other memory generated by the character generator A switching circuit for switching a part of the character screen signal of the screen to a part of the character screen signal of the one screen read from the memory and outputting the same, and sequentially changing the memory reading part of the memory by the memory reading circuit. By making the other screen a fixed screen, only the one screen can be scrolled with respect to this fixed screen It is characterized by having made it.

[Operation] In the above-described configuration, for example, if one screen is a help screen (calendar screen, operation procedure screen, etc.) and the other screen is a setting screen, the setting screen and the help screen are displayed simultaneously by the output signal of the switching circuit. I can do it.

In this case, by scrolling the help screen, it is possible to display the entire help screen while securing a sufficient display section for the setting screen.

[Embodiment] An embodiment of the present invention will be described below with reference to FIG. This example shows the OSD when VTR timer recording is set.
This is an example applied to a functional unit.

In the figure, for example, a VTR supplied to an input terminal 1
The video signal SV from the tuner incorporated in the switch is supplied to the fixed terminal on the a side of the changeover switch 3 via the buffer 2.

The video signal SV supplied to the input terminal 1 is supplied to a synchronization separation circuit 4, and the horizontal synchronization signal HD and the vertical synchronization signal VD separated by the synchronization separation circuit 4 are supplied to a controller 5 as a reference synchronization signal. The controller 5 is connected to a timer recording setting key S1, a help screen switching key S2, a scroll direction switching key S3, and a help screen on / off key S4.

Reference numeral 6 denotes a character generator. The operation of the character generator 6 is controlled by the controller 5. The character screen signal output from the character generator 6 is supplied to a fixed terminal on the b side of the changeover switch 3.

Switching of the changeover switch 3 is controlled by the controller 5. The output signal of the changeover switch 3 is supplied to a fixed terminal on the a side of the changeover switch 7.

The character screen signal output from the character generator 6 is supplied to the memory 8 as a write signal.
Writing and reading of the memory 8 are controlled by the controller 5. The signal read from the memory 8 is supplied to a fixed terminal on the b side of the changeover switch 7.

Switching of the changeover switch 7 is controlled by the controller 5. The output signal of the changeover switch 7 is supplied to an output terminal 9. Then, a signal obtained at the output terminal 9 is supplied to the television receiver 10.

Even if not described above, the timer recording setting mode is set when the timer recording setting key S1 is pressed, and the timer recording setting mode is canceled and the normal mode is set when the timer recording setting key S1 is pressed again. When the help screen on / off key S4 is pressed, the help screen is displayed, and
When pressed again, the display state of the help screen is released.

In the normal mode, the changeover switches 3 and 7 are set to a
Connected to the side.

In the timer recording setting mode and when the help screen is not displayed, the changeover switch 3 is connected to the b side, and the changeover switch 7 is connected to the a side. The setting screen data is supplied from the controller 5 to the character generator 6, and a character screen signal for the setting screen is output from the character generator 6 during the horizontal video period (shown in FIG. 2B and FIG. The horizontal sync signal HD is shown).

In the timer recording setting mode and the display state of the help screen, the changeover switch 3 is connected to the b-side, and the changeover switch 7 is connected to the b-side during a period corresponding to the display position of the help screen, and in other periods. Connected to a side.

At this time, the setting screen data and the help screen data are supplied from the controller 5 to the character generator 6, and the character generator 6 supplies a character screen signal for the setting screen during the horizontal video period and the help screen during the horizontal blanking period. Is output (shown in FIG. 3C). The character screen signal of the help screen is switched each time the help screen switching key S2 is pressed. The character screen signal of the help screen output from the character generator 6 is written into the memory 8 during the horizontal blanking period, and is read from the memory 8 at a timing corresponding to the display position of the help screen during the horizontal video period.

The display position of the help screen is a portion corresponding to the scroll direction. For example, when the scroll direction is the left direction or the right direction, the display position is the right or left predetermined portion of the screen. Side or upper side predetermined portion. Switching of the scroll direction is performed by a scroll direction switch key S3. In addition, the read portion of the character screen signal for the help screen from the memory 8 is sequentially changed so that the help screen scrolls in the set scroll direction.

FIGS. 2D and 2E are examples of the output signal of the memory 8 and the switching timing of the changeover switch 7 when scrolling leftward or rightward, respectively.

In the above configuration, in the normal mode, the video signal SV supplied to the input terminal 1 is changed by the changeover switches 3 and 7
Is supplied to the output terminal 9 via the
An image based on the video signal SV is displayed on the screen.

In the timer recording setting mode and when the help screen is not displayed, the character screen signal of the setting screen output from the character generator 6 is supplied to the output terminal 9 via the changeover switches 3 and 7, so that the television image Machine
A setting screen based on a character screen signal for the setting screen is displayed on the screen 10 (see FIG. 3A).

In the timer recording setting mode and when the help screen is displayed, the character screen signal of the setting screen output from the character generator 6 is supplied to the fixed terminal on the a side of the changeover switch 7 via the changeover switch 3 and ,
A character screen signal of a help screen read from the memory 8 is supplied to a fixed terminal on the b side of the changeover switch 7. The changeover switch 7 is connected to the b side during a period corresponding to the display position of the help screen, and is set to a during the other periods.
Side, the output terminal 9 is supplied with a signal in which a character screen signal for a setting screen and a character screen signal for a help screen are switched, and the television receiver 10 has a setting screen and a help screen. Displayed at the same time. In this case, the help screen is scrolled and displayed at a position corresponding to the scroll direction set by the scroll direction switching key S3. Further, each time the help screen switching key S2 is pressed, the contents of the character screen signal for the help screen change, so that the display contents of the help screen change.

FIG. 3B is an example of a screen when the help screen is displayed by pressing the on / off key S4 of the help screen after setting the day of the week, for example, and a calendar screen for confirming the day of the week is displayed as the help screen. It is. FIG. D shows the entire calendar screen. In this state, when the help screen switching key S2 is pressed, another help screen showing, for example, the operation procedure and the remaining amount of the tape is displayed.

FIG. C is an example of a screen when the help screen is displayed by pressing the on / off key S4 of the help screen after setting the off time, for example, and a screen showing an operation procedure is displayed as the help screen. is there. FIG. E shows the entire operation procedure screen. "NEXT" is the NEXT key of the main unit when setting the next program (not shown in Fig. 1)
Indicates that it is only necessary to press.
This indicates that a reservation recording key (not shown in FIG. 1) on the main body may be pressed.

Thus, according to this example, the help screen on / off key S4
By setting the help screen display status, the setting screen for setting timer recording and the help screen such as the calendar screen and operation procedure screen are displayed at the same time, and the user can view the setting screen and the help screen at the same time. The operation can be easily performed. Further, for example, a screen showing the entire operation procedure can be displayed at one time by the scroll display, so that the entire procedure can be easily understood. Further, since the entire help screen is displayed by scrolling and its display position can be changed, the entire help screen can be displayed while securing a sufficient display section of the setting screen.

In the above-described embodiment, the present invention is applied to the OSD function unit at the time of setting the timer recording in the VTR. However, the present invention can be similarly applied to the case where the help screen is displayed by another OSD function unit.

Further, even if not described above, if a key for controlling the stop and start of the scroll is provided in the scroll display of the help screen, the scroll can be stopped at the required display position, which is more convenient.

[Effects of the Invention] As described above, according to the present invention, for example, a timer recording setting screen, a calendar screen, and a help screen such as an operation procedure screen can be displayed at the same time, so that the user views the setting screen and the help screen simultaneously. The setting operation can be performed easily and efficiently.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIGS. 2 and 3 are diagrams for explaining the embodiment. 1 Input terminal 3, 7 Changeover switch 5 Controller 6 Character generator 8 Memory 9 Output terminal 10 TV receiver S1 Timer recording setting key S2 Help screen switching key S3: Scroll direction switching key S4: Help screen on / off key

Claims (1)

(57) [Scope of request for utility model registration] 1. A character generator for generating a character screen signal of one screen during a horizontal blanking period and generating a character screen signal of another screen during a horizontal video period, and the one character generator generated by the character generator. A memory for storing a character screen signal of the screen, a memory readout circuit for reading a part of the character screen signal of the one screen from the memory, and a part of the character screen signal of the other screen generated by the character generator And a switching circuit for switching and outputting a part of the character screen signal of the one screen read from the memory, and sequentially changing the readout portion of the memory by the memory readout circuit, thereby changing the other screen. Is a fixed screen, and only the one screen is scrollable with respect to this fixed screen. Screen signal generator.