JPH09163258A - Osd display system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an OSD display system by which provision of an on-screen- display OSD circuit to each of plural video equipments resulting in increase in the manufacture cost and a defect caused by contention of plural OSD display commands or the like received by one OSD display circuit are prevented. SOLUTION: An equipment operation decision means 2 of a video display device 21 decides a content of OSD display by the entry of an operation entry means 1 to control a remote control output means 3 to provide an output of a control command as a remote control code output signal 61 to a remote control reception means 6 of a video display device 22 having the OSD display circuit. Then the command is decoded by an OSD control command decode means 7 and sent to an equipment operation decision means 5 as an OSD display external request. Furthermore, an operation input means 4 sends the OSD display internal request to an equipment operation decision means 5. Then the equipment operation decision means 5 makes priority discrimination based on the received data and provides an OSD display request with priority to an OSD display output means 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an on-screen display (hereinafter referred to as OSD) display method in a video system including a plurality of video devices, and more particularly to an OSD display means of the plurality of video devices. A video device that does not have an OSD display device that has another OSD display means
The present invention relates to an OSD display system that performs OSD display using SD display means.

[0002]

2. Description of the Related Art Recently, with the advancement and diversification of video sources, demands for high-performance monitors and multi-function monitors for more faithfully reproducing the original image information of the sources are increasing.

[0003] For example, in fields such as broadcasting stations and high-grade commercial use, there is ongoing production of images that are aimed at and anticipate the next-generation high-definition television era. High-quality monitors are being demanded. In addition, IDTV (improved
For the development of definition TVs and EDTVs (high definition TVs), so-called high-scan (double-density) monitors with wide bandwidth and double speed scanning are required.

On the other hand, VTRs for both business and personal use
Various sources such as video discs, other communication networks, and personal computers have become widespread at the same time, and the demand for multipurpose monitors capable of monitoring these in optimal conditions is also increasing.

FIG. 6 is a diagram showing a television receiver capable of multi-scan display and various video equipment having an OSD display function.

In the normal broadcasting system, the horizontal scanning frequency (f
h) is 15.75kHz and vertical scanning frequency (fv) is 60Hz, but in order to improve the vertical density, fh is
It is considered to raise it to 64kHz or 100kHz or more, and a wide range of frequencies of 40Hz to 120Hz is also considered for fv. However, in order to cover such a wide range of scanning frequencies with a single monitor, a circuit system is required. It will be very complicated and will cause a significant cost increase.

[0007] Therefore, the frequency is narrowed down to the general consumer and some commercial use areas, and the frequency that can cover most of the uses of those users, that is, fh = 15 to 34 kHz, fv =
Television receivers capable of multi-scan display limited to the range of 50 to 60 Hz have become common.

As shown in FIG. 6, as a video source which is displayed at fh = 15.75 kHz which is the same horizontal scanning frequency as that of a normal television broadcasting system, a satellite broadcasting tuner, a video deck, a video disk, MSX computer,
Personal computers with a resolution of 640 dots × 200 lines and 320 dots × 200 lines, standard captain system terminals, character / multiplex decoders, etc. are listed. The video source displayed at fh = 24kHz is 640 dots × 400 lines. There is a high-density personal computer having a resolution of, and examples of video sources that are displayed at fh = 31.5 kHz include a high-density captain system terminal and an EDTV decoder.

As described above, in the conventional television receiver capable of multi-scan display, for example, the scan speed of the input signal source is set to the normal fh = 15.75 kHz.
If no correction is made when the scan speed (double scan) doubles from (normal scan) to fh = 31.5kHz, the aspect ratio of the OSD display characters changes, and the OSD displayed during normal scan is changed. The displayed characters are displayed in a size of 1/2 in the vertical direction and double in the horizontal direction.

For this reason, the various video equipment having the conventional OSD display function is installed in each equipment such as a character generation OS.
A D display circuit is built in, and OSD display characters corresponding to each device configuration, scan speed, etc. are output and displayed on the screen of a video monitor (television receiver or the like).

In the configuration of such a conventional video equipment system, for example, in the case of a system in which a video deck (hereinafter also referred to as VTR) having no video monitor function is connected to a television receiver, the operation information of the video deck is used. The OSD display circuit such as a character generator in the VCR is used to display various kinds of information such as status information and status information on the display screen of the television receiver, while the operation information of the television receiver itself is displayed. And various information such as status information is displayed on the TV inside the television
These are performed independently by using the SD display circuit.

As mentioned above, most of the VCRs currently on the market do not have a monitor function, that is, the OSD display character is displayed not only on the self (VTR) but also on the self (VTR) alone. Although it cannot be seen in, the OSD display circuit such as a character generator is built in. In addition to the VTR, most of the video equipment (video signal generating means) shown in the configuration example of the conventional video equipment system described above has an O character such as a character generator.
SD display circuit is built in (equipped).

Thus, for example, according to the conventional video equipment system including the video deck and the television receiver, the video deck side and the television receiver side each have an OSD display circuit, which is systematic. When the cost becomes high or when the OSD display signal is simultaneously output from the VCR and the television receiver, the OSD display character conflicts, that is, the OSD display character output from the two OSD display circuits is displayed on the monitor screen. There is a problem in that there may be problems such as overlapping display on the top and disturbing the synchronization of the monitor screens. Incidentally, some recent device control 1-chip microcomputers have a built-in OSD display circuit, and there are quite a few that are at issue of cost controversy.

[0014]

As described above, for example,
In the case of a conventional video equipment system including a video deck and a television receiver, both the video deck side and the television receiver side have an OSD display circuit, resulting in a high system cost and OSD display character. Problems (defects) that cause problems such as conflicts
was there.

Therefore, the present invention has been made in view of such a problem,
In a video equipment system including a plurality of video equipments, an increase in manufacturing cost due to having a plurality of OSD display circuits and a plurality of OSDs for one OSD display circuit
It is an object of the present invention to provide an OSD display system capable of preventing a problem caused by a command conflict or the like occurring in the OSD display circuit when input from a display command.

[0016]

An OSD display system according to a first aspect of the present invention includes one or a plurality of video devices that output an OSD display request command, and the OSD display request command that is input together with a video signal or independently. An OSD display system comprising one or a plurality of video devices for displaying a character on a monitor screen by a first operation input means for receiving an operation input from a user, and the first operation input means. As a remote control code, a first device operation determining means for determining the operation and display output of the entire video device based on the contents of the input, and control command data for requesting OSD display in conjunction with the operation input or the operation of the device. Remote control output means for outputting and OS
Remote control receiving means for receiving the remote control code including control command data information for D display; second operation input means for receiving various operation inputs from a user;
OSD control command decoding means for decoding the control command data for OSD display received by the remote control receiving means, and OSD output in association with the operation of the device based on the operation input from the second operation input means. Second device operation determining means for determining priority based on the content of the display request command and the content of the OSD display request command from the OSD control command decoding means, and determining the operation of the entire video equipment and the OSD display output content. An OSD signal is created based on the video display means and the display output determined by the second device operation determination means, and the OSD signal is mixed with the video signal or the OSD is cut.
An OSD display output means for displaying either one of the signals only on the video display means is provided.

In the OSD display system according to the second aspect of the present invention, one or a plurality of video devices that output an OSD display request command, and the OSD display request command that is input and a character is displayed on the monitor screen together with a video signal. An OSD display system including one or a plurality of video devices displayed on a screen, the first operation input unit receiving various operation inputs from a user, and the operation input from the first operation input unit 1. Device operation determining means for determining the operation and display output of the entire video device based on the contents of 1., one or more video devices for outputting the OSD display request command, and one or more for inputting the OSD display request command. Interlock with multiple interface cables connecting between video equipment and the operation input or equipment operation Control signal output means for outputting control command data for OSD display as a control signal to the interface cable, control signal input means for receiving the control signal including control command data information for OSD display, and various types from the user. Of the second operation input means for receiving the operation input of the control signal and the control command data for OSD display received by the control signal input means.
The contents of the OSD display request command output in conjunction with the operation of the device based on the operation input from the SD control command decoding means and the second operation input means, and the OSD
Second device operation determining means for performing priority determination based on the content of the OSD display request command from the control command decoding means, and determining the operation of the entire video equipment and the OSD display output content; OSD based on the display output determined by the device operation determining means
Either a signal created and mixed with the video signal or a signal of only the OSD signal obtained by cutting the video signal,
And an OSD display output means for displaying on the video display means.

An OSD display system according to a third aspect of the present invention is the OSD display system according to the first or second aspect, wherein the OSD display output means determines the display determined by the second device operation determination means. An OSD-IC for outputting an OSD signal based on the output; a video processing means for outputting either a mixed signal of the OSD signal and a video signal or a signal of only the OSD signal obtained by cutting the video signal; It is characterized by comprising a CRT for displaying a video signal from the video processing means and a control means for controlling the OSD-IC and the video processing means.

An OSD display system according to a fourth aspect of the present invention is the OSD display system according to the third aspect, wherein the video signal output from the video processing means is:
It is characterized in that it is output to and displayed on another external video equipment having a display means.

According to the first to fourth aspects of the present invention, only one or a small number of the video devices constituting the OSD display system are provided with the O.
The video equipment which has the SD display output means built therein and does not have the OSD display output means built therein shares (uses) the OSD display output means of the video equipment having the built-in OSD display output means to perform respective display. I did so,
It is sufficient that at least one OSD display output means is provided for each set of the OSD display system of the present invention, and it is possible to reduce the total cost of the video equipment that constitutes the set, and at the same time, reduce the manufacturing cost of the OSD display system. It is possible to lower it.

An OSD display system according to a fifth aspect of the present invention is the OSD display system according to any one of the first to fourth aspects, wherein one or a plurality of video devices on the side that inputs the OSD display request command are A function of identifying, from the contents of the OSD display request command, which of the one or more video devices that output the OSD display request command has output the OSD display request command. The OSD unique to the OSD display request command from the video device, corresponding to the video device specified by the identification function of the one or more video devices that input the OSD display request command.
It is characterized in that a display pattern can be displayed.

According to the fifth aspect of the invention, the video device that outputs any OSD display request command transmits the OSD display request command to the video device that inputs the OSD display request command. Since the function of identifying whether or not the OSD display request command is provided is provided, it is possible to display a specific OSD display pattern for each video device that outputs the OSD display request command.

An OSD display system according to a sixth aspect of the present invention is the OSD display system according to any one of the first to fifth aspects, wherein one or a plurality of video devices that output the OSD display request command are the It has a function of discriminating one or more video devices on the side of inputting an OSD display request command, and specifies a desired video device from the one or more video devices on the side of inputting the OSD display request command. Then, the OSD display request command can be output.

According to the sixth aspect of the present invention, the video device that outputs the OSD display request command to the video device that outputs the OSD display output means, that is, O
Since a function for discriminating a video device capable of outputting the SD display request command is provided, the necessary video device is selected depending on the case and the OSD display request command is output to display an appropriate OSD display pattern. Can be performed on an appropriate video device.

An OSD display system according to a seventh aspect of the present invention is the OSD display system according to the seventh aspect, wherein each of the one or more video devices on the side that inputs the OSD display request command displays the OSD display. It can be shared and used by one or a plurality of video devices that output a request command, and has a setting function of an OSD display operation corresponding to the OSD display request command received by the OSD display output means. One or more of outputting the OSD display request command by storing an OSD display pattern of what OSD display is performed for each video device that has received the OSD display request command in the storage means in the OSD display output means. OS output for each of the video equipment
It is characterized in that the contents of the OSD display to be displayed corresponding to the D display request command can be customized.

According to the seventh aspect of the present invention, a desired OSD display pattern is displayed on the display means in response to the OSD display request command output by each of the video devices that output the OSD display request command. In order to be able to display the above, each video equipment which inputs the OSD display request command, which is a video equipment having a built-in OSD display output means, is provided with a so-called customization function. It is possible to display various OSD display patterns.

An OSD display system according to an eighth aspect of the present invention is the OSD display system according to any one of the first to seventh aspects, wherein each of the one or a plurality of video devices on the side that inputs the OSD display request command. Has an exclusive processing function, and when a plurality of OSD display request commands are received in close proximity from some of one or a plurality of video devices that output the OSD display request command, the plurality of video devices are output. It is characterized in that only the earliest OSD display request command received from the other OSD display request command is accepted, and other OSD display request commands are discarded or registered in the OSD display processing queue and after waiting for the turn, the OSD display processing is performed.

Here, according to the invention described in claim 8, since a processing function which is provided in each of the video equipments on the side of inputting the OSD display request command is provided, a certain specific OSD display request command is given. When the OSD display request command is output concentratedly (closely) to the video device on the side of inputting, the operation is performed so that only the earliest OSD display request command is received. Therefore, it is possible to prevent a problem caused by input from a plurality of OSD display commands at the same time.

An OSD display system according to a ninth aspect of the present invention is the OSD display system according to any one of the first to eighth aspects, wherein the OSD display output means is a separate unit, and any of the above is provided. It is characterized in that it is configured to be attachable to and detachable from a video device.

According to the invention described in claim 9, the OSD display output means is unitized in a configuration (attachable) corresponding to the plurality of video equipments.
The configuration is different from that of the video equipment having the display output means, that is, the video equipment on the side of inputting the OSD display request command.
The versatility and expandability of the display system and each of the image devices that are the constituent elements of the display system can be further enhanced, and the application thereof can be greatly expanded.

[0031]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of an OSD display system according to the present invention which uses an output signal of a remote controller as an interface between a video device having an OSD display circuit and a video device not having an OSD display circuit.

In FIG. 1, a video device 21 not having an OSD display circuit includes an operation input means 1 for receiving various operation inputs from a user, and the entire video equipment based on the contents of the operation input from the operation input means 1. A device operation determining means 2 for determining an operation and a display output, and a remote control output means 3 for outputting control command data for OSD display as a remote control code in conjunction with the operation input or the operation of the device.
It is composed of

On the other hand, having an OSD display circuit (built-in)
The video equipment 22 is received by the remote control receiving means 6 for receiving the remote control code including the control command data information for OSD display, the operation input means 4 for receiving various operation inputs from the user, and the remote control receiving means 6. O to decode the generated OSD display control command data
SD control command decoding means 7 and equipment for determining the operation and display output of the entire video equipment based on the content of the operation input from the operation input means 4 and the content of the OSD display request command from the OSD control command decoding means 7. The operation determining means 5 and the OSD display output means 8 that creates an OSD signal and displays it by mixing it with the video signal, or cuts the video signal and displays only the OSD signal.

Further, the OSD display output means 8 is
An OSD-IC 12 that is an integrated circuit that outputs an OSD signal based on a display request command, and a mixed (superimpose) signal of the OSD signal and a video signal from a video signal supply source (not shown), or the video signal is cut. Then, the video processing means 13 for outputting any one of the OSD signals, the CRT 14 for displaying the video signal from the video processing means 13, and the control means 11 for controlling the OSD-IC 12 and the video processing means 13. And, The video device 22 having (embedded in) the OSD display circuit has been described as having a video display means (CRT 14), but the video device does not necessarily have a video display means. That is, in the case of a video device that does not have a video display means and has only an OSD display circuit built-in, the video signal output from the video processing means 13 is a video that has other video display means and does not have an OSD display circuit. It may be configured to be supplied to and displayed on the image display means of the device (image display device).

Next, the operation of the OSD display system of the present invention configured as described above will be described.

Video equipment 21 without OSD display circuit
When the operation input means 1 receives an input from the user, the device operation determination means 2 operates and the operation input means 1
The device operation and the OSD display content according to the input from are determined. As a result, when an OSD display request for changing the OSD display content or refreshing the display content is generated, the device operation determination means 2 causes the remote control output means 3 to operate.
And an external device having an OSD display circuit, for example,
A control command for operating (controlling) the OSD display circuit of the video display device 22 is output as a remote control code output signal 61.

On the other hand, having an OSD display circuit (built-in)
The video equipment 22 receives the remote control code output signal (OSD display control command) 61 from the external equipment, for example, the video equipment 21 by the remote control receiving means 6, is decoded and analyzed by the OSD control command decoding means 7, and is received from the external equipment. It is transmitted to the device operation determination means 5 as an OSD display external request. Similarly, from the operation input means 4, the device operation determination means 5 is sent as an OSD display internal request.
Is transmitted to Then, the device operation determining means 5 determines the priority based on the data transmitted from the operation input means 4 and the OSD control command decoding means 7,
Priority OSD display Internal or external request (hereinafter OSD
A display command) is output to the OSD display output means 8.

Then, the control means 11 of the OSD display output means 8 outputs O based on the input OSD display command.
Request output of OSD display data to SD-IC12, and
Based on the request, the SD-IC 12 outputs the OSD display data to the video processing means 13. Further, the control means 11 mixes the OSD display data with a video signal supplied from another circuit (means) of the video equipment 22 to the video processing means 13 and displays it on the CRT 14, or only the OSD display data. Whether or not to display independently is determined by reading from the OSD display command. In the former case, the video processing means 13 is controlled not to perform the mute control, and in the latter case, the mute control is performed.

Next, as an interface method between a video device having an OSD display circuit and a video device not having an OSD display circuit, a method of connecting the devices with a wire instead of using the output signal of the remote controller will be described. FIG. 11 is a block diagram showing another embodiment of the OSD display system of the present invention in which an interface is established by wire using a wire material as an interface between a video device having a display circuit and a video device not having the display circuit.

In FIG. 2, the video equipment 23 having no OSD display circuit is based on the operation input means 1 for accepting various operation inputs from the user, and the contents of the operation input from the operation input means 1 as a whole of the video equipment. From the device operation determining means 2 for determining the operation and the display output, and the control signal output means 9 for outputting the control command data for OSD display as a control signal to the interface cable 17 in conjunction with the operation input or the operation of the device. Composed.

On the other hand, having an OSD display circuit (built-in)
The video equipment 24 receives the control signal including the control command data information for OSD display, and receives the control signal input means 10.
The operation input means 4 for receiving various operation inputs from the user, and the O received by the control signal input means 10.
OSD for decoding control command data for SD display
Control command decoding means 7 and equipment operation for determining the operation of the entire video equipment and the display output based on the content of the operation input from the operation input means 4 and the content of the OSD display request command from the OSD control command decoding means 7. The determination means 5 and the OSD display output means 8 that creates an OSD signal and displays it by mixing it with the video signal or cuts the video signal and displays only the OSD signal.

Further, the OSD display output means 8 is
OS that outputs an OSD signal based on a display request command
Mixing of the D-IC 12, the OSD signal and a video signal from a video signal supply source (not shown) (superimpose)
Signal, or video processing means 13 for muting (cutting) the video signal and outputting either one of the OSD signals, a CRT 14 for displaying the video signal from the video processing means 13, and the OSD-IC 12 , And a control means 11 for controlling the video processing means 13.

Next, the operation of the OSD display system of the present invention configured as described above will be described.

Video equipment 23 without OSD display circuit
When the operation input means 1 receives an input from the user, the device operation determination means 2 operates and the operation input means 1
The device operation and the OSD display content according to the input from are determined. As a result, when an OSD display request such as a change or a refresh of the display content is generated for the OSD display content, the device operation determination means 2 causes the control signal output means 9
And an external device having an OSD display circuit, for example,
A control command for operating (controlling) the OSD display circuit of the video display device 24 is output as a control signal to the interface cable 17 connected to the video display device 24.

On the other hand, having an OSD display circuit (built-in)
The video equipment 24 receives a control signal (OSD display control command) from an external equipment, for example, the video equipment 23 by the control signal input means 10, decodes and analyzes it by the OSD control command decoding means 7, and outputs O from the external equipment.
It is transmitted to the device operation determination means 5 as an SD display external request. Similarly, from the operation input means 4, the OSD display internal request is transmitted to the device operation determination means 5. Then, the device operation determination means 5 determines the priority based on the data transmitted from the operation input means 4 and the OSD control command decoding means 7, and the OSD to be prioritized.
A display internal or external request (hereinafter referred to as an OSD display command) is output to the OSD display output means 8.

Then, the control means 11 of the OSD display output means 8 outputs O based on the input OSD display command.
Request output of OSD display data to SD-IC12, and
Based on the request, the SD-IC 12 outputs the OSD display data to the video processing means 13. Further, the control means 11 mixes the OSD display data with a video signal supplied from another circuit (means) of the video equipment 22 to the video processing means 13 and displays the OSD display data on the CRT 14, or only the OSD display data. It is judged from the OSD display command whether or not to display independently, and in the former case, the video processing means 1
3 is controlled so that mute control is not performed, and in the latter case, mute control is performed.

By the way, the OSD display system according to the present invention comprises a video device having no one or a plurality of OSD display circuits and a video device having one or a plurality of OSD display circuits. Further, in this configuration, it is preferable that the number of video devices having the OSD display circuit is small from the viewpoint of the present invention.

FIG. 3 is a diagram showing a configuration example of such an OSD display system.

FIG. 3A shows the present invention O which is composed of video equipment 21, 25, 26, 27 having no OSD display circuit and video equipment 22, 41 having an OSD display circuit.
2 shows an SD display system. The OSD
Video equipment 21, 25, 26, 27 without display circuit
And the interface with the video equipment 22, 41 having the OSD display circuit is realized by a remote control signal.

Further, FIG. 3B shows an OSD display system of the present invention which is composed of video equipments 23, 42, 43 and 44 not having an OSD display circuit and video equipments 24 and 45 having an OSD display circuit. And the OS
Video equipment without D display circuit 23, 42, 43, 44
The interface with the video equipment 24 and 45 having the OSD display circuit is realized by an interface cable made of a wire.

In the OSD display system of the present invention, for example (which will be described below with reference to FIG. 3B), the video equipment 23 having no OSD display circuit is OSD.
OS for both video equipment 24 and 45 having a display circuit
It is possible to issue a display command of the D display data, and which of the video devices (video device 24 or 45) is to be issued the display request can be specified by the user from the operation input means 1, for example. The control signal output means 9 or the ID of the other party's video equipment is incorporated in the control signal passing through the interface cable 17, and the ID is supplied by the control signal input means 10 or the like. Is configured to accept the control signal (OSD display command) only when the ID matches the ID of its own video device. Further, the video equipment having each OSD display circuit is, for example, the control signal input means 10 described above.
Etc., the exclusive processing is performed, and when a control signal (OSD display command) is received from a video device that does not have a plurality of OSD display circuits, the control signal from the video device that receives the control signal first is received. It is configured to give priority to processing.

Further, in the OSD display system according to the present invention, the transmission source I is included in the control signal (OSD display command).
D, that is, I for each video device that does not have an OSD display circuit
The video equipments 24 and 45 in which D and the like are incorporated and have the OSD display circuit are incorporated in these control signals to read the sender ID, and the OSD display corresponding to (identified) each equipment identified thereby. Is possible.
Further, these unique OSD displays can be changed, that is, customized. This customization is performed by, for example, rewriting the contents of the memory (font EEP-ROM) in the OSD-IC 12 by an operation from the operation input means 1, for example.

FIG. 4 is a block diagram showing an example of the internal structure of the OSD-IC 12.

As shown in FIG. 4, the OSD-IC 12 is
Command data decoder 31, video RAM 33,
It comprises an EEP-ROM 34 storing font data, an output controller 35, and other control circuits 32. Further, the EEP-ROM 34 is divided into, for example, four areas 71, 72, 73, and 74, and customization data for the video equipment 23, customization data for the video equipment 42, and customization for the video equipment 43, respectively. Data and customized data of the video equipment 44 are stored.

OSD-IC 12 configured as described above
Operates as follows. That is, the OSD-IC 7 to which the command data from the control means 11 is input is controlled by the command data decoder 31 in FIG.
The data such as the font is read from a predetermined area of the corresponding EEP-ROM 34 based on the contents and the sender ID of the command data decoded from the first command data, and the contents of the video RAM 33 are transferred to the video RAM 33 via the output controller 35. It is output to the processing means 13. If the command is for customizing, that is, rewriting the areas 71, 72, 73, 74 of the EEP-ROM 34, data for rewriting the contents is transferred from the command data decoder 31 via the video RAM 33. EEP-RO
The data in the predetermined area of M34 is rewritten.

Next, as an interface method between a video device having an OSD display circuit and a video device not having an OSD display circuit, a method of using a ring-shaped bus between the devices will be described. FIG. 5 has an OSD display circuit. FIG. 16 is a block diagram showing still another embodiment of the OSD display system of the present invention in which an interface is established by using a ring-shaped IIC bus as an interface between a video device and a video device not provided.

In FIG. 5, the video equipment 57, 58 having an OSD display circuit and the video equipment 53, 54, 55, 56 having no OSD display circuit are centered on the I ² C bus consisting of the clock line 51 and the data line 52. Is configured. The I ² C bus is connected with, for example, a controller 59 for controlling the I ² C bus, a memory 60 for storing a control (operation) program of the controller 59, and the like, and the controller 59 is used for exchanging data between the video devices.
It is designed to be performed under the control of.

By the way, the I ² C bus is Inter-I.
Abbreviation of C bus, which is a data communication bus capable of bidirectional transmission, random access, distributed control, and collision processing, which are the basic functions of a LAN (Local Area Network), and normal start / stop serial transmission and start / stop. It is a two-wire bidirectional serial bus that features collision processing by bit system, open collector type drive, etc., and acknowledgment check for each basic transmission unit. Since it is a two-wire system, only half-duplex communication is possible.

As described above, the video equipment mainly composed of the I ² C bus includes the controller 64 which operates according to the control program stored in the memory 65, and the video equipment 57, 58 having the OSD display circuit. And video equipment 53, 54, 55 having no OSD display circuit,
56 is a slave address that can be set for each device in order to specify (distinguish) individual devices (housings).
Is given. The ID according to the slave address specifies a video device having an OSD display circuit, and
When there are a plurality of video devices each having an SD display circuit and the font data recorded in each area in the ROM of each OSD-IC is different, each video device has a different OSD display circuit. By selecting, you can use different libraries as OSD fonts / characters, so users who operate video equipment without an OSD display circuit can select a specific OS.
By selecting a video device having a D display circuit, a desired OSD font / character can be displayed (for example,
It can be displayed on the CRT 14).

Further, an OSD display control command output device,
That is, by expressing the ID of a video device having no OSD display circuit by a sub-address word following the slave address, for example, the OSD display controlled side, that is, the video device side having the OSD display circuit shares its own OSD display circuit ( It is possible to restrict the use) for each of the OSD display control command output devices, and to select the display format, display characters, etc. according to the type of the OSD display control command output device.

Furthermore, according to the total number of shared devices (for example, according to the present embodiment, the OSD display control command output devices and the OSD display controlled devices connected to the I ² C bus, one OSD display controlled device ( Shared housing (OSD)
Display control command output device) and the OSD display control command output device and OSD
Display Pairing (or grouping) with controlled device
It is possible to make the combination of the above configurations highly efficient.

In the embodiment of the invention described above, the OSD
Although it has been described that the display controlled device, that is, the video device having the OSD display circuit has the OSD display circuit built therein, and the OSD display circuit is a part of the circuit constituting the OSD display controlled device, The OSD display circuit does not have to be an integral structure, and may be configured as a unit separate from the video device, whereby it is configured by one or more OSD display control command output devices and one or more OSD display controlled devices. The OSD display system of the present invention can be configured more flexibly and a more practical system can be designed.

The above is a description of a part of the embodiments according to the present invention, and the application examples thereof are endless due to addition of various means without departing from the gist of the present invention.

[0064]

As described above, according to the OSD display system of the present invention, the OS is displayed on all video equipments that perform OSD display.
There is no need to provide a D display circuit (built-in or one having a different unit structure), and therefore, it is possible to prevent problems caused by conflict of OSD display characters output from a plurality of OSD display circuits, The total cost of the equipment system can be kept low.

In addition, an OSD display system, which is an independent unit, does not include an OSD display circuit integrated with one or a plurality of OSD display controlled devices, that is, a video device having an OSD display circuit. Further, the versatility and expandability of each of the video devices, which are the constituent elements, can be further enhanced, and the application thereof can be greatly expanded.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of an OSD display system of the present invention which uses an output signal of a remote controller as an interface between a video device having an OSD display circuit and a video device not having an OSD display circuit.

FIG. 2 is a block diagram showing another embodiment of the OSD display system of the present invention in which an interface is established by a wire using a wire as an interface between a video device having an OSD display circuit and a video device not having an OSD display circuit. .

FIG. 3 is a diagram showing a configuration example of an OSD display system.

FIG. 4 is a block diagram showing an example of an internal configuration of an OSD-IC.

FIG. 5 shows still another embodiment of the OSD display system of the present invention in which an interface is established by using a ring-shaped IIC bus as an interface between a video device having an OSD display circuit and a video device not having an OSD display circuit. It is a block diagram.

FIG. 6 is a diagram showing a television receiver capable of multi-scan display and various video equipment having an OSD display function.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Operation input means 2 ... Equipment operation determination means 3 ... Remote control output means 4 ... Operation input means 5 ... Equipment operation determination means 6 ... Remote control reception means 7 ... OSD control command decoding means 8 ... OSD display output means 11 ... Control means 12 OSD-IC 13 Video processing means 14 CRT 21 Video equipment (without OSD display circuit) 22 Video equipment (with OSD display circuit) 61 Output signal

Claims (9)

[Claims] 1. One or a plurality of video devices for outputting an OSD display request command, and one or a plurality of video devices for inputting the OSD display request command and displaying a character together with a video signal on a monitor screen. A configured OSD display system, wherein first operation input means for receiving an operation input from a user, and operation and display output of the entire video equipment are determined based on contents of the input from the first operation input means. And a remote control output unit for outputting control command data for requesting OSD display as a remote control code in conjunction with the operation input or the operation of the device, and control command data information for OSD display. The remote control receiving means for receiving the remote control code, and accepting various operation inputs from the user Second operation input means, OSD control command decoding means for decoding control command data for OSD display received by the remote control receiving means, and operation of the device based on operation input from the second operation input means Of the OSD display request command output in conjunction with the
Second device operation determining means for performing priority determination based on the content of the SD display request command and determining the operation of the entire video equipment and the OSD display output content, image display means, and second device operation determining means An OS which creates an OSD signal based on the display output determined by the above, and displays either the signal mixed with the video signal or the signal obtained by cutting the video signal only on the OSD signal on the video display means.
An OSD display system comprising a D display output means. 2. One or a plurality of video devices for outputting an OSD display request command and one or a plurality of video devices for inputting the OSD display request command and displaying a character together with a video signal on a monitor screen. A configured OSD display system, comprising: first operation input means for receiving various operation inputs from a user; and operation of the entire video equipment based on the contents of the operation input from the first operation input means 1. A device operation determining unit that determines a display output, one or more video devices that output the OSD display request command, and an input 1 that inputs the OSD display request command
Or, a plurality of interface cables connecting between a plurality of video devices, and a control signal output means for outputting control command data for OSD display as a control signal to the interface cables in association with the operation input or the operation of the devices. , Control signal input means for receiving the control signal including control command data information for OSD display, second operation input means for receiving various operation inputs from the user, and the control signal input means OSD control command decoding means for decoding control command data for OSD display, contents of the OSD display request command output in conjunction with the operation of the device based on the operation input from the second operation input means, and the OSD O from control command decoding means
Second device operation determining means for performing priority determination based on the content of the SD display request command and determining the operation of the entire video equipment and the OSD display output content, image display means, and second device operation determining means An OS which creates an OSD signal based on the display output determined by the above, and displays either the signal mixed with the video signal or the signal obtained by cutting the video signal only on the OSD signal on the video display means.
An OSD display system comprising a D display output means. 3. The OSD display output means, an OSD-IC which outputs an OSD signal based on the display output determined by the second device operation determination means, and a mixed signal of the OSD signal and the video signal. Alternatively, a video processing means for outputting either one of the signals of the OSD signal obtained by cutting the video signal, and a CRT for displaying the video signal from the video processing means.
3. The OSD display system according to claim 1, further comprising: a control unit that controls the OSD-IC and the video processing unit. 4. The OS according to claim 3, wherein the video signal output from the video processing means is output to and displayed on another external video device having a display means.
D display system. 5. One or a plurality of video devices that input the OSD display request command, among the one or a plurality of video devices that output the OSD display request command based on the contents of the OSD display request command. Has a function of identifying whether or not the OSD display request command is output from the other video device, and the video identified by the identification function of one or more video devices that input the OSD display request command. The OSD according to any one of claims 1 to 4, wherein a unique OSD display pattern can be displayed in response to an OSD display request command from the video device, corresponding to the device. Display system. 6. A device for outputting the OSD display request command 1
Alternatively, a plurality of video devices have a function of discriminating one or a plurality of video devices on the side of inputting the OSD display request command, and one or a plurality of video devices on the side of inputting the OSD display request commands. 6. The OSD display request command can be output by designating a desired video device from the inside.
The OSD display system described in 1. 7. One or a plurality of video devices that input the OSD display request command can be shared by one or a plurality of video devices that output the OSD display request command. And has an OSD display operation setting function corresponding to the OSD display request command received by the OSD display output means, and an OSD display of what kind of OSD display is performed for each video device that has received the OSD display request command. By storing the pattern in the storage unit of the OSD display output unit, the OSD to be displayed corresponding to the output OSD display request command for each of the one or more video devices that output the OSD display request command. The OSD display system according to claim 5, wherein display contents can be customized. 8. One or a plurality of video devices each of which inputs the OSD display request command has an exclusive processing function, and some of the one or a plurality of video devices which output the OSD display request command. When a plurality of OSD display request commands are received in close proximity, only the earliest OSD display request command received from the plurality of video devices is accepted, and other OSD display request commands are discarded or wait for OSD display processing. The OSD display system according to any one of claims 1 to 7, wherein the OSD display process is performed after being registered in a queue and waiting for a turn. 9. The OSD display output means is formed as a separate unit and is configured to be attachable to and detachable from any of the video equipment. OSD display system.