JPH10155121A - Video display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To display overall state of an electronic device connecting to a digital bus such as an IEEE1394 bus. SOLUTION: An interface circuit 2 decodes all control signals of a digital bus and the decoded data are given to a CPU 3. The CPU 3 applies arithmetic/ analysis processing of a state of a device connecting to the digital bus to the received data and generates display data. The display data are subjected to arithmetic operation by display processing circuit 4 and displayed on a display device 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
, Etc., related to a video display device connected to a digital bus.

[0002]

2. Description of the Related Art A conventional electronic device connected to a digital bus has a configuration as disclosed in, for example, Japanese Patent Application Laid-Open No. 8-51447. This is shown in FIG. 10 and its operation will be briefly described.

A device connected to a digital bus such as IEEE 1394 is provided with an input selection key 101 and an output status display LED 102. Output status display LED 102
Is off when synchronous communication data is not being output,
It is lit during output. Further, it flashes when it is selected as an input device from another communication device.

[0004]

However, in such a configuration, it is difficult to comprehensively manage the connection state and operation state of many devices or the state of each device when the devices are arranged at a long distance. It is difficult to show the detailed operation state of each device.

[0005]

According to the present invention, there is provided a video display apparatus comprising: a digital bus which reads a state of a device connected by a digital bus and reads a control signal flowing through the digital bus; An interface circuit, a CPU for processing the control signal to create display data, a display processing circuit for converting the display data created by the CPU to video data, and a display for displaying the signal created by the display processing circuit. It is provided.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION

(Embodiment 1) Hereinafter, an embodiment of the first invention of the present invention will be described with reference to FIGS. 1, 2 and 3. FIG.

In FIG. 1, reference numeral 1 denotes a video display device such as a television receiver, 2 denotes an interface circuit of a digital bus such as IEEE1394, 3 denotes a CPU for controlling the entire video display device, and 4 denotes a CPU formed by three CPUs. A display processing circuit 5 for performing arithmetic processing on graphic data controlled by the generated data is a display for displaying a video signal.

As shown in FIG. 1, one video display device is connected to several devices by a digital bus.
Each device transmits and receives a video signal and a control signal through a digital bus. FIG. 3 shows an example of data on the digital bus. The digital bus is transmitted for each unit of data called a packet. Each packet is composed of a device control signal and data such as video and audio. The digital data transmitted in this manner is decoded by the interface circuit 2 in FIG. 1 for all control signals, and the data is transmitted to the CPU 3.

The CPU 3 performs a calculation / analysis process of the status of the device connected to the digital bus from the transmitted data to create display data. The display data is calculated by the display processing circuit 4 and displayed on the display 5.
The display processing circuit 4 includes a simple OSD processing circuit to a graphic processing circuit for performing three-dimensional display. FIG.
Shows a display example. Information from externally connected devices is transmitted via a digital bus, and all connected devices are graphically displayed on the display 5 and information such as the operating state of each device is displayed.

With the above configuration, the connection state of the devices can be seen in the image, so that the viewer can recognize the connection state of the devices while viewing the image.

(Embodiment 2) Hereinafter, a second embodiment of the present invention will be described with reference to FIGS. 4, 5 and 3. FIG.

In FIG. 4, reference numeral 11 denotes a video display device such as a television receiver, 2 denotes an interface circuit of a digital bus such as IEEE1394, 3 denotes a CPU for controlling the entire video display device, and 4 denotes a CPU formed by three CPUs. A display processing circuit for performing arithmetic processing on graphic data controlled by the received data, 12 a memory for storing the operation history of the digital bus, 14 a remote controller for giving instructions to 11 video display devices, and 13 for decoding data from 14 remote controllers The user interface circuit 5 is a display for displaying a video signal.

As shown in FIG. 4, several devices are connected to the eleven video display devices via a digital bus. Each device exchanges video signals and control signals through a digital bus. FIG. 3 shows an example of data on the digital bus. The digital bus is transmitted for each unit of data called a packet. Each packet is composed of a device control signal and data such as video and audio. The digital data transmitted in this manner is decoded by the interface circuit 2 in FIG. 4 for all control signals, and the data is transmitted to the CPU 3. CP
U3 performs a calculation / analysis process of the state of each device connected to the digital bus from the transmitted data, and controls so that the state is stored in the 12 memories.

When a history display command is input from the user from the remote controller 14, the command is transmitted to the CPU 3 through the user interface 13. The CPU 3 that has received the instruction reads the history data from the memory 12 and creates display data with the three CPUs. The display data is calculated by the display processing circuit 4 and displayed on the display 5. The display processing circuit 4 includes a simple OSD processing circuit to a graphic processing circuit for performing three-dimensional display.

FIG. 5 shows a display example. The operation status (date / time / operation status / title, etc.) of a certain period is displayed in a text format. Further, the present invention also includes an operation which can be executed by selecting the operation on the history screen by using 14 remote controls when the same operation as the operation performed in the past is desired.

According to the above configuration, since the history of the connection status of the digital bus can be stored, the operation history of the electronic equipment connected by the digital bus can be confirmed at a glance.

(Embodiment 3) Hereinafter, a third embodiment of the present invention will be described with reference to FIGS. 6, 7, and 3. FIG.

In FIG. 6, reference numeral 21 denotes a video display device such as a television receiver, 2 denotes an interface circuit of a digital bus such as IEEE1394, 3 denotes a CPU for controlling the entire video display device, and 4 denotes a CPU formed by three CPUs. A display processing circuit for performing arithmetic processing on graphic data controlled by the data, a touch panel 22, a detection circuit 23, and a display 5 for displaying a video signal.

The video display device 21 is connected to several devices by a digital bus as shown in FIG. Each device transmits and receives a video signal and a control signal through a digital bus.

FIG. 3 shows an example of data on the digital bus.
The digital bus is transmitted for each unit of data called a packet. Each packet is composed of a device control signal and data such as video and audio. The digital data transmitted in this manner is decoded by the interface circuit of FIG.
To transmit the data. The CPU calculates / calculates the state of the device connected to the digital bus from the transmitted data.
Performs analysis processing and creates display data. Display data is 4
Is calculated by the display processing circuit, and is displayed on the display 5. The user interacts with the operation of the CPU 3 through the 22 touch panels attached to the front of the 23 display and the detection circuit 23 that detects the output of the touch panel 22 while watching the displayed graphical data.
Transmit data to The CPU 3 changes the display content according to the result. The display processing circuit 4 includes a simple OSD processing circuit to a graphic processing circuit for performing three-dimensional display.

FIG. 7 shows a display example of the display 5. It displays all connected devices graphically, displays information such as the operating status of each device, and has an operation selection screen.

With the above configuration, the video display device 21 can display the connection status of the electronic devices connected by the digital bus on the screen so that the user can check the connection status at a glance, and has the touch panel. The user can see the image display device 2 on the screen.
Connection and control of each electronic device connected to 1 can be easily operated. In particular, since it is displayed graphically, it can be easily handled by people who cannot become information devices, such as elderly people.

Embodiment 4 Hereinafter, a fourth embodiment of the present invention will be described with reference to FIGS. 8, 9, and 3. FIG.

In FIG. 8, reference numeral 31 denotes a video display device such as a television receiver, reference numeral 2 denotes a digital bus interface circuit such as IEEE1394, reference numeral 3 denotes a CPU for controlling the entire video display device, and reference numeral 4 denotes a CPU formed by three CPUs. A display processing circuit that performs arithmetic processing on graphic data controlled by the input data, a video signal processing circuit 32 that decodes an input video signal, a synthesis circuit 33 that synthesizes a video signal,
Reference numeral 5 denotes a display for displaying a video signal. Reference numeral 34 denotes switching means for switching between a signal from the interface circuit 2 and an externally input video signal and inputting the signal to the video signal processing device.

The operation of this configuration example will be described. The image display device 31 is connected to several devices by a digital bus as shown in FIG. Each device transmits and receives a video signal and a control signal through a digital bus. FIG. 3 shows an example of data on the digital bus.
The digital bus is transmitted for each unit of data called a packet. Each packet is composed of a device control signal and data such as video and audio. The digital data transmitted in this manner is decoded by the interface circuit 2 in FIG.
To transmit the data.

The CPU 3 performs a calculation / analysis process of the state of each device connected to the digital bus from the transmitted data, and detects a change in the state. Display data is created only when a change is detected, and the display data is 4
Are synthesized by the synthesizing circuit of 33 and the video signal calculated by the display processing circuit of 32 and decoded by 32 and displayed on the display of 5. The display processing circuit 4 is a simple OS.
It includes a D processing circuit to a graphic processing circuit that performs three-dimensional display.

An operation example of the video display device having such a configuration will be described. When the user (or the viewer) receives the transmitted television signal and displays it on the display 5 for watching, the switching means 34 is connected to the video signal input terminal side. In such a state, when it is desired to know the connection state of each device connected to the video display device 31 via the digital bus, or to control or operate each device, the data of the information from the device is transferred to the digital bus.
The image data is input to the display processing circuit 4 via the interface circuit 2, output as a result of the calculation, is synthesized with the video signal processing circuit 32 in the synthesizing circuit 33, and is displayed on a screen on an image.

When the switching means 34 is connected to the interface circuit 2, the video information data from each device is decoded by the video signal processing circuit 32,
The data of other information output from the display processing circuit 4 is combined with the data of the combining circuit 33 and displayed on the screen.
Note that the switching means 34 may be a means capable of switching connection to the interface 2 side or the video signal input terminal side manually by a user, or may be a means for automatically switching according to information input from the digital bus.

FIG. 9 shows a display example of the display 5 of the video display device having such a configuration. FIG. 9A shows a normal screen, in which the state of the change of the connected device is superimposed on the video signal and displayed on the video signal as shown in FIG. 9B only when the state of the connected device changes. The display method of the present invention includes a method of displaying characters, a method of displaying graphics, a method of displaying windows, and a method of displaying telops. In addition, it includes a sound generating device, and includes a sound or the like and a notice.

As described above, the video display device of the present embodiment can display the status of each external device connected by a digital bus on the screen even when, for example, watching a television broadcast on the screen. Can be superimposed on the television broadcast video, so that it is not necessary to erase and display the image, which is very effective in terms of time.

Further, the information from the external device can be displayed on the screen by being superimposed on the video information by the switching means.

[0032]

As described above, according to the video display apparatus of the first invention of the present invention, the connection status of the electronic devices connected by the digital bus can be displayed on one screen, and the status can be displayed by the user. You can check at a glance.

Further, according to the video display device of the second aspect of the present invention, the operation history of the electronic equipment connected by the digital bus can be confirmed at a glance. For example, this is effective when the video recorded on the DVC is lost.

According to the video display apparatus of the third invention,
The connection status of the electronic devices connected by the digital bus can be displayed on one screen, and the status can be confirmed at a glance by the user, and the user can realize control of the connected electronic devices on the screen. . In particular, since it is displayed graphically, it can be easily handled by people who cannot become information devices, such as elderly people.

Further, according to the video display device of the fourth aspect of the present invention, even if another video signal is being viewed on the video display device, a change in the operation of the electronic device connected by the digital bus is currently viewed. By displaying the change information over the current video signal, the user can be notified of the operation of the electronic device.

[Brief description of the drawings]

FIG. 1 is a block diagram of a video display device according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a display example on a display of the video display device according to the first embodiment of the present invention.

FIG. 3 is a diagram showing a data example of a digital bus according to the present invention;

FIG. 4 is a block diagram of a video display device according to a second embodiment of the present invention.

FIG. 5 is a diagram showing a display example on the display of the video display device according to the second embodiment of the present invention;

FIG. 6 is a block diagram of a video display device according to a third embodiment of the present invention.

FIG. 7 is a diagram showing a display example on the display of the video display device according to the third embodiment of the present invention;

FIG. 8 is a block diagram of a fourth embodiment of the present invention.

FIG. 9 is a diagram showing a display example according to the fourth embodiment of the present invention.

FIG. 10 is a diagram showing an embodiment of a conventional video display device.

[Explanation of symbols]

1, 11, 21, 31 Video display device 2 Interface circuit, display of display processing circuit 12 Memory, user interface circuit, remote control 22 Touch panel 32 Video signal processing circuit 33 Synthesis circuit

Continued on the front page (51) Int.Cl. ⁶ Identification code FI H04N 5/44 H04L 11/00 320

Claims (8)

[Claims] An image display device connected to a device via a digital bus reads control information among various types of information flowing through the digital bus and graphically displays an operation state of the device or a connection state with the device. An image display device characterized in that the image is displayed on a screen. 2. An interface circuit of a digital bus for interconnecting devices, a CPU for decoding data from the interface circuit and creating data for a display processing circuit, and displaying data sent from the CPU. A display processing circuit that performs processing, and a video display device that displays data of the display processing circuit, and reads control information of a digital bus and graphically displays states of devices connected by the digital bus. Video display device. 3. An image display device connected to a device via a digital bus, wherein control information among various types of information flowing through the digital bus is read, and the contents are stored and displayed on a screen. Display device. 4. An interface circuit of a digital bus for interconnecting devices, a CPU for decoding data from the interface circuit, recording the content of the interface circuit in a postscript memory, and creating data for a postscript display processing circuit.
A memory that stores the state of the digital bus detected by the CPU, a display processing circuit that performs display processing of data sent from the CPU, and a display that displays data of the display processing circuit. An image display device which reads control information, stores its contents, and displays the result. 5. An image display device connected to a device via a digital bus, wherein control information among various information flowing through the digital bus is read, and an operation state of the device is graphically displayed on a screen. An image display device, wherein an operation of the device is input by touching a screen, a control signal is transmitted to the device, and an execution state is displayed on the screen. 6. An interface circuit of a digital bus for interconnecting devices, decoding of data from the interface, creation of data of a display processing circuit described later, calculation of a result of a detection device described later, and data to the interface circuit. A CPU for sending, a display processing circuit for displaying data sent from the CPU, a display for displaying data of the display processing circuit, and a detecting device for detecting information touching the front surface of the display with a finger. And a detection circuit that decodes the result of the detection device and transmits the result to the CPU, reads control information of the digital bus, and graphically displays the status of devices connected by the digital bus, and displays the status by a person. Input the operation of those devices, and issue control signals to the connected devices based on the results. A video display device for displaying the execution state in real time. 7. A video display device connected to a device via a digital bus, reads control information from among various information flowing through the digital bus, and if there is a change in the operation state of the device, converts the content into a video signal. An image display device characterized by being displayed on a screen in an overlapping manner. 8. An interface circuit of a digital bus for interconnecting devices, a CPU for decoding data from the interface circuit and creating data for a display processing circuit, and displaying data sent from the CPU. A display processing circuit for performing processing, a display for displaying data of the display processing circuit, a video signal processing circuit for decoding an input video signal, and switching between an output of the display processing circuit and an output of the video signal processing circuit An image display device comprising a switching device, reading control information of a digital bus, and displaying a change in the state in real time by superimposing the content on a video signal.