KR960007543B1 - Osd apparatus of tv monitor - Google Patents

Abstract

The system is on screen display(OSD) apparatus of television with which user can select the position of OSD on a cathode ray tube(CRT). It includes the following devices. Key input device(25) selects an OSD pattern by user's taste. Input signal identifying device(26) identifies the selected signal from the key input device(25). State bit formation device(20) forms prescribed state bit by the identification result of the input signal identifying device(26). The first and the second memory device(30)(31) store the OSD pattern of the first and the second pattern, respectively. OSD indicating device(32) extracts pattern data from the first or the second memory device(30)(31) by the state bit and displays it on the image displaying device(24).

Description

On-Screen Display of TV Receiver

1 is a block diagram showing a OSD device according to the prior art.

2 is a block diagram showing an OSD device according to the present invention.

3 is a diagram showing an OSD position displayed on a CRT screen.

4 is a flow chart for explaining the operation of the OSD device shown in FIG.

5 is a block diagram illustrating an OSD device according to another embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

20,60: status bit forming means 21,51: antenna

22,52: External video device 23,53: Image processor

24,54: video display device 25,55: key input unit

26,56: input signal discrimination unit 27,57,63: status bit storage unit

28,58: control unit 29,59: status bit correction

30,31: memory 32,62: OSD display

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an On Screen Display device (hereinafter referred to as an OSD device), and more particularly, to an OSD device of a television receiver that enables a viewer to select a position of an OSD displayed on a CRT (Cathod Ray Tube) screen. It is about.

Recently, in an image device such as a television receiver, when a viewer manipulates a keypad or a remote control device installed in the image device to adjust the volume, brightness, or contrast level, the viewer is currently adjusting the lower portion of the CRT screen, for example. The OSD function that displays the target level in the form of a bar graph is adopted.

FIG. 1 is a functional block diagram showing such a conventional OSD device. In the drawing, reference numeral 1 is an antenna for receiving broadcast radio waves from the outside, and 2 is an image from an external video device 2 such as a video cassette recorder (VCR). Image processing unit 3 for processing signals, 4 is an image display device such as a CRT, 5 is a key input unit consisting of a remote control device or a keypad such as an image device, 6 is in accordance with the input signal selected by the key input unit 5 A control unit for generating an OSD control signal, 7 is a memory unit storing the OSD pattern to be displayed on the image display device 4, 8 reads the OSD pattern stored in the memory unit 7 in accordance with the control signal of the control unit 6 The OSD is displayed on the video display device 4.

That is, in the above configuration, when the viewer manipulates the key input unit 5 to adjust the volume and the like, the controller 6 sends the OSD control signal to the OSD display unit 8 and the OSD display unit. (8) reads OSD pattern data corresponding to the viewer's key operation from the memory unit 7 and transmits the OSD pattern data to the video display device 4 according to the control signal from the controller 6. Therefore, the viewer can adjust the volume and the like while looking at the OSD screen displayed at the bottom of the video display device 4.

However, in the conventional OSD device described above, since the OSD screen is formed at the bottom of the CRT screen of the video display device 4, for example, a viewer can watch a foreign movie using an external video device 2 such as a VCR. When the caption data is provided at the bottom of the CRT screen, there is a disadvantage that the OSD screen and the caption data are duplicated, making it difficult to read the caption data.

Accordingly, the present invention has been made in view of the above circumstances, and an object thereof is to provide an OSD device of a television receiver that enables a viewer to select a position on which an OSD screen is formed.

According to a first aspect of the present invention for realizing the above object, there is provided an OSD apparatus comprising: key input means for the viewer to select an OSD pattern change; input signal discrimination means for discriminating a selection signal from the key input means; Status bit forming means for forming a predetermined status bit indicating the shape of the OSD pattern according to the discrimination result by the signal discriminating means, first memory means for storing the OSD data of the first pattern, and a different form from the first pattern A second memory means for storing OSD data of the second pattern of the second pattern; and reading OSD pattern data from the first or second memory means according to the state bits formed by the state bit forming means and outputting the OSD pattern data to the image display apparatus. OSD display means is configured to include.

In addition, the OSD apparatus according to the second aspect of the present invention for realizing the above object comprises: key input means for the viewer to select a plurality of OSD patterns, input signal discrimination means for discriminating a selection signal from the key input means; Status bit forming means for outputting status bits corresponding to a predetermined selected OSD pattern according to the determination result by the input signal discriminating means, a plurality of memory means for storing different types of OSD pattern data, and the status bit forming means. And OSD display means for reading OSD pattern data from one of the plurality of memory means and outputting the OSD pattern data to the image display device according to the status bit formed by the memory device.

According to the present invention having the above-described configuration, the status bit forming means forms and outputs a status bit according to the input signal selected by the key input means, and the OSD display means selectively selects an OSD pattern according to the status bit to display an image. Since the output to the display device, the viewer can select various positions of the OSD screen.

Hereinafter, an embodiment according to the present invention will be described with reference to the drawings.

2 is a block diagram showing an OSD device according to an embodiment of the present invention, in which reference numeral 21 denotes an antenna for receiving broadcast radio waves from the outside, 22 an external video device such as a VCR, and 23 an antenna An image processing unit for processing the video signal input from the 21 or the external video device 22, and 24 is a video display device such as a CRT.

Further, reference numeral 25 denotes a key input unit having an operation key for adjusting a volume or the like as in the related art, and a change key for changing an OSD pattern displayed on the video display device 24, and 26 denotes this key input unit. An input signal discrimination unit for discriminating the control command signal from (25).

Reference numeral 20 denotes state bit forming means for forming a predetermined state bit indicating the form of the OSD pattern according to the discrimination signal from the input signal discriminating unit 26, which is a state bit indicating the form of the current OSD pattern. When a normal control signal, such as a volume control signal, is input from the state bit storage unit 27 and the input signal determination unit 26, the state bit stored in the state bit storage unit 27 is read and then When the OSD pattern change signal is inputted from the input signal determination unit 26 and the OSD pattern change signal is input, the state bits and the change control signal stored in the state bit storage unit 27 are converted to the state bit correction unit 29. Control unit 28 for transmitting to the control unit and the state bit change control signal from the control unit 28 takes the complementary value of the applied state bit and stores it in the state bit storage unit 27. And a status bit correction unit 29 for updating and storing the status bits and outputting the status bits of the complementary values to the OSD display unit 32.

Further, reference numeral 30 denotes a first memory unit in which OSD data of the first pattern is stored, for example, as shown in FIG. 3A, and 31 denotes OSD data of the second pattern, as shown in FIG. 3B, for example. Stored in the second memory unit 32 reads OSD pattern data from the first or second memory units 30 and 31 according to the state bits applied from the control unit 28 and the state bit correction unit 29. The OSD is output to the video display device 23.

Next, the operation of the OSD device according to the present invention will be described based on the flowchart shown in FIG.

When the viewer turns on the television receiver (step ST1), the status bit correction unit 29 defaults to the status bit storage unit 27 by, for example, a status bit corresponding to the OSD pattern of FIG. Will be stored in step (ST2).

The controller 28 determines whether the OSD pattern change signal is input based on the input signal from the input signal determination unit 26 (steps ST3 and ST4). And the like, the controller 28 outputs the status bits stored in the status bit storage 27 to the OSD display 32 (step ST6), and the OSD display 32 is applied from the controller 28. The OSD pattern data stored in the first memory unit 30 is read according to the status bit to generate the OSD pattern at the bottom of the image display device 24 as shown in FIG.

On the other hand, when the OSD pattern change signal is input from the input signal determination unit 26 in the step ST4, the control unit 28 reads the status bit from the state bit storage unit 27 and the status bit together with the change control signal. Output to the correction unit 29, the state bit correction unit 29 takes the complementary value of the status bit applied from the control unit 28, and sends it to the state bit storage unit 27 to send the state bit storage unit ( In addition to updating and storing the stored contents of 27), the display is output to the OSD display unit 32 (step ST6). In addition, the OSD display unit 32 displays OSD pattern data stored in the first or second memory units 30 and 31 according to the state bits applied from the state bit correction unit 29 (in this example, the second memory unit 31). Data] is read out and sent to the video display device 24 to generate a predetermined OSD pattern (the OSD pattern shown in FIG. 3 (b) in this example).

In addition, when the viewer presses a normal key such as a volume or luminance control tee, the controller 28 outputs the updated status bits to the OSD display unit 32 in the status bit storage unit 27. Until the key is pressed again, the OSD pattern of FIG. 3 (b) is generated.

Therefore, in the above embodiment, the control unit 28 outputs a predetermined status bit to the OSD display unit 32 in accordance with the viewer's key input, and the OSD display unit 32 is configured according to the status bit from the control unit 28. Since the OSD pattern data stored in the first or second memory units 30 and 31 is read out and generated on the video display device 24, the OSD screen is superimposed with the caption data appearing on the video display device and the viewer reads the caption data. The problem of not being able to do so is solved.

FIG. 5 is a block diagram illustrating an OSD display device according to another exemplary embodiment of the present invention. FIG. 5 is a block diagram illustrating a plurality of memory units 60 ₁ to 60 _n which store different OSD patterns, different from those of FIG. 5. And a second state bit storage section 63 in which status bits corresponding to each of the OSD patterns are stored. Further, the key input section 55 has a desired key instead of a change key for instructing the change of the OSD pattern. Multi-Function OSD selection keys are provided to allow the viewer to directly select the OSD pattern.

In addition, unlike the first state bit storage unit 57, the second state bit storage unit 63 in the state bit forming unit 60 is configured as a nonvolatile memory, and the memory unit 60 ₁ to 60 _n. ) And the number of status bits corresponding to When the status bit is input from the controller 58, the status bit correction unit 59 renews and registers the new status bit in the first status bit storage unit 57 as a new one.

In the above arrangement, when the viewer operates the key input unit 55 to select a predetermined OSD pattern, the selection signal is transmitted to the control unit 58 in the status bit forming unit 60 through the input signal discriminating unit 56. The controller 58 reads the status bits from the second status bit storage 63 based on the input selection signal and compares them with the status bits stored in the first status bit storage 57. do.

At this time, when the status bit read from the second state bit storage unit 63 and the status bit stored in the first state bit storage unit 57 are the same, the state read from the first state bit storage unit 57 is the same. Outputs the bits to the OSD display unit 62, and when the two status bits are different, outputs the status bits read from the second state bit storage unit 63 to the status bit correction unit 59 and the OSD display unit 62. .

Accordingly, the status bit correction unit 59 updates and registers the status bits applied from the control unit 58 to the first status bit storage unit 57 as new ones, and the OSD display unit 62 applies from the control unit 58. The OSD pattern data stored in the corresponding memory unit is read out according to the status bits to be output to the image display device 54.

In addition, when the viewer presses a normal key such as a volume or luminance control key, the controller 58 displays the status bits stored in the first status bit storage 57 as in the first embodiment. The OSD display unit 62 reads the OSD pattern data from the corresponding memory according to the status bit applied from the controller 58 and outputs the OSD pattern data to the image display device 54.

Therefore, according to the above embodiment, the viewer can select the OSD pattern according to the screen state on the video display device 54, thereby greatly improving the convenience of the viewer.

In addition, the present invention is not limited to the above embodiments and various modifications can be made without departing from the technical scope of the present invention. For example, in the embodiment of FIG. The status bit of the default value may be stored in the status bit storage section 27 at power-on, and then output to the control section 28 only after that.

As described above, according to the present invention, it is possible to realize an on-screen display device that enables the viewer to change the position of formation of the OSD image as needed.

Claims (8)

By the key input means 25 for the viewer to select the OSD pattern change, the input signal discrimination means 26 for discriminating the selection signal from the key input means 25, and the input signal decision means 26. A status bit forming means 20 for forming a predetermined status bit in the form of an OSD pattern according to the determination result, a first memory means 30 for storing OSD data of the first pattern, and the first pattern Second memory means 31 for storing data of another type of second pattern and the first or second memory means 30 and 31 according to the state bits formed by the state bit forming means 20. And OSD display means (32) for reading OSD pattern data from and outputting the same to the image display device (24). 2. The state bit forming means (20) according to claim 1, wherein the state bit forming means (20) comprises a state bit storage (27) for storing a state bit representing a current OSD pattern, and a state according to a result of the determination by the input signal discriminating means (26). A control unit 28 for outputting the status bits read out from the bit storage unit 27 to the OSD display unit 32 or the status bit correction unit 29, and the status bits inputted from the control unit 28 as their complementary values. And a status bit correction unit (29) outputting the OSD display unit (32) to the OSD display unit (32). The on-screen display device of a television receiver according to claim 2, wherein said status bit correction unit (29) stores a status bit of a default value in said status bit storage unit (27) at power on. The on-screen of a television receiver according to claim 2, wherein said state correction unit (29) updates and registers said state bit storage unit (27) with a complementary value when a state bit is applied from said control unit (28). Display device. Key input means 55 for the viewer to select a plurality of OSD patterns, input signal discrimination means 56 for discriminating the selection signal from the key input means 55, and the input signal discrimination means 56 A status bit forming means 60 for outputting a status bit corresponding to the selected OSD pattern according to the determination result, a plurality of memory means 60 ₁ to 60 _n for storing different types of OSD pattern data, and the status bit forming means OSD display means 62 for reading OSD pattern data from one of the plurality of memory means 60 ₁ to 60 _n and outputting it to the image display device 54 according to the status bit formed by 60. An on-screen display device of a television receiver, characterized in that configured. 6. The state bit forming means (60) according to claim 5, wherein the state bit forming means (60) corresponds to a first state bit storage portion (57) for storing a state bit representing a current OSD pattern, and to each of the memory means (60 ₁ to 60 _n ). A second state bit storage unit 63 for storing each state bit, and from the first or second state bit storage units 57 and 63 according to a discrimination signal from the input signal discriminating unit means 56. A controller 58 for reading out the status bits and outputting the status bits to the OSD display means 62 and the status bit correction unit 59 and the first status bit storage unit 57 based on the status signals from the control unit 58; An on-screen display device of a television receiver comprising a status bit correction unit (59) for updating and registering the data. 7. The on-screen display of a television receiver as claimed in claim 6, wherein said status bit correction unit (29) stores a status bit of a default value in the first status bit storage unit (57) at power-on at all times. 7. The on-screen display of a television receiver according to claim 6, wherein said first state bit storage section (57) consists of volatile memory and said second state bit storage section (63) consists of nonvolatile memory. Device.