JP2001086475A - Image display device and controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve convenience for both public television broadcast reception and communication with a private communication signal due to a video telephone etc., as a medium by receiving a television broadcasting signal including an image and a received signal that is included in a private communication signal and includes an image and simultaneously displaying both images on both surfaces. SOLUTION: A channel, sound and image separating device 7 provided in a television receiver 300 divides a broadcasting signal (BC) into a broadcasted image and broadcasted sound in each channel. The broadcasted image and the broadcasted sound belonging to one or a plurality of channels selected by an operator among divided channels are respectively inputted to a scan converter belonging to a controller 3 and a sound mixing device. The received signal of a communication signal CS is separated between a received telephone image and a received telephone sound part by a sound and image separating and mixing device 8 provided in a video telephone system 200 and is inputted to the scan converter belonging to the controller 3 and a sound mixing device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display device and a control device as a main part thereof, which are suitable for performing reception of a television broadcast and communication by a videophone or the like in parallel. It relates to improvement to enhance the performance.

[0002]

2. Description of the Related Art First, names used in the present specification will be described. First, in the present specification, in order to avoid redundant description, an image signal representing an image is also referred to as “image”.
It is described. Similarly, an audio signal expressing an audio is equally described as “audio”. Also, "television"
Abbreviated as “TV” or “TV” as necessary. Further, the term “television broadcast signal” means a signal that is transmitted to an unspecified number of people from a broadcasting station through a communication path such as a carrier wave, a cable TV network, and the Internet, and that represents broadcast content. The “communication signal” means a one-way or two-way communication signal transmitted by specifying a communication partner, such as a communication signal for performing communication by a videophone device.

Conventionally, a television receiver (television set) that receives a television broadcast signal and reproduces images and sounds as broadcast contents, and a videophone device that exchanges images and sounds with a specific party, Both are known. Then, as shown in the block diagram of FIG.
There are also known a videophone device and a videophone device that are connected to each other so that a screen of the videophone device can be used as a monitor screen of the videophone device.

[0004] A videophone device 200 shown in FIG. 21 includes a communication unit 201, a camera 22, and a microphone 23. The communication unit 201 is connected to a communication path such as a telephone line or the Internet, receives a reception signal included in the communication signal CS from the communication path, separates the image P and the audio AD from the reception signal, and outputs the image P and the audio AD. To 300. The communication unit 201 further transmits the image of the operator captured by the camera 202 and the voice of the operator captured by the microphone 23 to the communication path as a transmission signal included in the communication signal CS. Thus, the videophone device 200
Performs two-way communication with the communication partner.

[0005] The television receiver 300 receives the television broadcast signal BS and converts an image (tentatively referred to as a “broadcast image”) included in the television broadcast signal BC into the television receiver 300.
Of the television broadcast signal BC (tentatively referred to as "broadcast audio") through an audio reproduction device such as a speaker (not shown) provided in the television receiver 300 as well as the screen 301 provided in the television receiver 300. Further, when image P (temporarily referred to as “(received) telephone image”) and audio AD (temporarily referred to as “(received) telephone sound”) are transmitted from video telephone device 200, ie, video telephone device 2
When the operator performs communication using 00, the image P and the sound AD are reproduced in the television receiver 300 by the switching operation of the operator.

As described above, the television receiver 300 performs both functions of reproducing the broadcast image and the broadcast audio, which are the original functions, and reproducing the telephone image P and the telephone sound AD, which are the additional functions. It can be used as a device.

[0007]

However, FIG.
As shown, in a system in which a conventional TV receiver and a video phone are combined as an image display device,
There is a problem that the reproduction of the broadcast image and the reproduction of the telephone image cannot be performed simultaneously in parallel. Further, there is a problem that the broadcast signal BC and the communication signal CS cannot be received in a multiplexed form through a single line.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems in the prior art, and is convenient for both receiving a public television broadcast and communicating via a private communication signal such as a videophone. It is an object of the present invention to provide an image display device capable of improving the performance and a control device constituting a main part thereof.

[0009]

An apparatus according to a first aspect of the present invention is an image display apparatus, an image reproducing apparatus for displaying an image on a screen, an image reproducing apparatus for displaying an image on a television broadcast signal including the image and a private communication signal. And a control device for receiving a received signal including the image data and displaying both images simultaneously on the screen.

According to a second aspect of the present invention, in the image display apparatus of the first aspect, the television broadcast signal and the private communication signal are multiplexed on a single communication line, and the control device comprises: A signal separation device that separates the multiplexed signal to extract the television broadcast signal and the received signal of the private communication signal from the single communication line.

According to a third aspect of the present invention, in the image display device of the second aspect, the private communication signal is a bidirectional communication signal including a transmission signal in addition to the reception signal, and the control device includes A signal mixing device for multiplexing a transmission signal onto the single communication line and transmitting the multiplexed signal is further provided.

According to a fourth aspect of the present invention, in the image display device of the first aspect, the apparatus further comprises a sound reproducing device, wherein the private communication signal includes a sound in the received signal, and receives a call in addition to the received signal. Contains an incoming signal that informs
The control device, an incoming detection unit that detects the incoming signal, when the incoming detection unit detects the incoming signal, in response to the voice included in the received signal of the private communication signal, And a sound mixing device that outputs to the sound reproduction device with higher intensity than the sound included in the television broadcast signal.

According to a fifth aspect of the present invention, in the image display device of the first aspect, the private communication signal includes an incoming signal for notifying an incoming call in addition to the received signal, and the control device includes An incoming call detecting unit that detects an incoming signal, and when the incoming call detecting unit detects the incoming signal while displaying an image of the television broadcast signal on the screen, in response to this, both images are displayed on the screen. And an image mixing device for displaying images simultaneously.

In an apparatus according to a sixth aspect of the present invention, in the image display apparatus according to the fifth aspect, when the incoming signal is detected by the incoming signal detecting section, the image mixing apparatus responds to the signal by detecting the incoming signal. Both images are simultaneously displayed on the screen in such a manner that a part of the image is replaced with the image of the received signal of the private communication signal.

According to a seventh aspect of the present invention, in the image display device according to the fifth aspect of the present invention, when the incoming signal is detected by the incoming signal detecting section, the image mixing apparatus responds to the signal by displaying the incoming signal on the screen. While arranging and displaying the two images respectively in two image areas defined in different sizes,
An image of the received signal of the private communication signal is arranged on a largest one of the two image areas.

According to an eighth aspect of the present invention, in the image display device of the first aspect, the control device is a character signal which expresses the information related to the television broadcast signal or the information related to the private communication signal in characters. And a display character generation unit that generates the character, and superimposes the character on an image of the reception signal of the television broadcast signal or the private communication signal displayed on the screen at a character display position set in the screen. And a screen synthesizing unit for displaying.

According to a ninth aspect of the present invention, in the image display device of the eighth aspect, the control device determines a portion having little motion in the image displayed on the screen as the character display position. A display position determining unit is further provided.

According to a tenth aspect of the present invention, in the image display device of the eighth aspect, the control device sets a portion without another character in the image displayed on the screen as the character display position. A display position determining unit for determining is further provided.

According to an eleventh aspect of the present invention, in the image display device according to the eighth, ninth or tenth aspect, the control device controls the display device to change a color that is clearly compared with the color of the image at the character display position. A character color determination unit that determines the color of the character,
Furthermore, the display character generation unit generates the character in the color determined by the character color determination unit.

In a twelfth aspect of the present invention, in the image display device of the first aspect, the private communication signal is a two-way communication signal including a transmission signal in addition to the reception signal, and Each of the transmission signals includes an image, and the control device simultaneously displays the image of the reception signal, the image of the transmission signal, and the image of the television broadcast signal on the screen.

According to a thirteenth aspect of the present invention, in the image display device of the twelfth aspect, both the reception signal and the transmission signal include a sound, and the control device controls the sound of the reception signal and the sound. A comparison processing unit for comparing the sound intensity of the transmission signal, and, based on the comparison result of the comparison processing unit, an image belonging to the higher-strength signal of the reception signal and the transmission signal is used as the other signal. And a change control unit that displays a larger image on the screen.

According to a fourteenth aspect of the present invention, in the image display device of the first aspect, the private communication signal is a two-way communication signal including a transmission signal in addition to the reception signal, and the control device includes: An input operation unit for inputting a character based on an operation of an operator, a character display unit for displaying the input character group on the screen, and, among the character groups displayed on the screen, the input unit An enlargement display unit for enlarging and displaying a part including a character being input is provided, and a transmission unit transmitting a character signal representing the input character group as the transmission signal.

According to a fifteenth aspect, in the image display device according to the first aspect, the private communication signal is a two-way communication signal including a transmission signal in addition to the reception signal, and the reception signal is: The control device includes a signal for displaying an option, the control device is configured to select an option displayed on the screen based on an operation of an operator, and an input operation unit that selects an option displayed on the screen. A part selected by the input unit, an enlarged display unit to enlarge and display, and a transmission unit that transmits a signal representing a selection result as the transmission signal,
Is provided.

According to a sixteenth aspect of the present invention, in the image display device of the first aspect, the control device designates a partial area in the screen and an enlargement / reduction ratio based on an operation of an operator. An input operation unit; and an enlargement / reduction display unit configured to display an image of the specified partial area in the image displayed on the screen by enlarging or reducing the image at the specified ratio.

According to a seventeenth aspect of the present invention, in the image display device of the first aspect, the private communication signal includes an incoming signal for notifying an incoming call in addition to the received signal. A recording device for recording a television broadcast signal;
An incoming call detecting unit that detects the incoming signal, and a recording control unit that starts recording the television broadcast signal to the recording device in response to the incoming signal being detected by the incoming detecting unit. .

According to the eighteenth aspect of the present invention, the first to the first
In the image display device according to any one of the seventh to seventh aspects, the private communication signal is a videophone communication signal.

An apparatus according to a nineteenth aspect is an image display device, comprising: an image reproducing device for displaying an image on a screen; a control device for receiving a signal including the image and displaying the image on the image reproducing device; The control device, a display character generation unit that generates a character signal, in the image displayed on the screen, a display position determination unit that determines a portion with little movement as a character display position, A screen synthesizing section for superimposing the character on the image of the signal displayed on the screen at the character display position.

An apparatus according to a twentieth aspect is an image display device, comprising: an image reproducing device for displaying an image on a screen; a control device for receiving a signal including the image and displaying the image on the image reproducing device; Comprising, a display character generation unit that generates a character signal, in the image displayed on the screen, a display position determination unit that determines a portion without another character as a character display position, A screen synthesizing unit configured to superimpose the character on the image of the signal displayed on the screen at the determined character display position.

According to a twenty-first aspect of the present invention, in the image display device, the image display device includes: an image reproducing device for displaying an image on a screen; and a control device for receiving a signal including the image and displaying the image on the image reproducing device. The control device may further include: a character arrangement determining unit configured to determine a clear color in comparison with a color of an image of the signal displayed on the screen at a set portion on the screen; and A display character generation unit that generates a character signal expressing a character having the determined color; and a screen synthesis unit that displays the character on the image of the signal displayed on the screen in the region.

An apparatus according to a twenty-second invention is an image display apparatus, comprising: an image reproducing apparatus for displaying an image on a screen; and an image reproducing apparatus for transmitting an image of a transmission signal and an image of a reception signal included in a bidirectional communication signal. A control device for simultaneously displaying the received signal and the transmission signal, wherein the reception signal and the transmission signal both include audio, and the control device compares the intensity of the audio of the reception signal with the intensity of the audio of the transmission signal. A comparison processing unit, based on a result of the comparison by the comparison processing unit, a change in which an image belonging to the higher-strength signal of the reception signal and the transmission signal is displayed on the screen larger than the other signal. A control unit.

The device according to the twenty-third invention is characterized in that the first to the twenty-second
The control device according to any one of the above aspects.

[0032]

DESCRIPTION OF THE PREFERRED EMBODIMENTS [A. Outline of Embodiment] FIG.
1 is a block diagram illustrating a basic configuration of an image display device according to an embodiment of the present invention. This image display device 400
A communication line 5 as a transmission medium for a broadcast signal BC and a communication signal CS, including a videophone device 200, a television receiver 300, and a control device 3 connected to each other.
It is connected to the. The communication line 5 is not limited to a wired line, but may be a wireless line using radio waves as carrier waves. Further, as described later, the communication line 5 may be configured as a separate line between the broadcast signal BC and the communication signal CS, and conversely, is configured as a single line, and the broadcast signal BC and the communication signal It may be multiplexed with both CS and transmitted.

The television receiving apparatus 300 includes a signal extracting / selecting section 302, an image reproducing apparatus 1, and an audio reproducing apparatus 24.
It has. The signal extraction / selection unit 302 outputs the broadcast signal B
Receiving C and selecting a specific broadcast signal (s) from among broadcast signals BC generally including signals of a plurality of channels, and extracting images and sounds. Control device 3
When the television receiver 300 is used alone without being connected, the image reproducing device 1
2 is reproduced on the screen 2 provided therein, and the audio reproducing device 24 reproduces the audio transmitted from the signal extraction / selection unit 302. The sound reproducing device 24 includes, for example, a speaker. Control device 3 for television receiver 300
1 is connected, the signal extraction / selection unit 302
Are transmitted to the image reproducing device 1 and the audio reproducing device 24 via the control device 3.

Communication unit 20 provided in videophone device 200
1 is connected to the communication line 5, receives a reception signal included in the communication signal CS from the communication path 5, separates an image and a sound from the reception signal, and outputs it to the control device 3.
The communication unit 201 further converts the image of the operator captured by the camera 202 and the voice of the operator captured by the microphone 23 as a transmission signal included in the communication signal CS into the communication line 5.
Send to. That is, the communication signal CS is a two-way communication signal including an image and a sound.

The television broadcast signal BC may be input to the television receiver 300 via the control device 3. Also,
The communication signal CS may be exchanged between the communication line 5 and the communication unit 201 via the control device 3.

The control device 3 outputs a broadcast image from the signal extraction / selection unit 302 and, at the same time, outputs a received telephone image from the communication unit 201. That is, the control unit 3 allows the operator to watch TV broadcasts and perform videophone communication. Are performed, the received image and the broadcast image are both displayed on the screen 2 at the same time.
Communicate to In the example of FIG. 1, the received telephone image and the broadcast image are divided into an area 2 a and an area 2 b obtained by dividing the screen 2.
Each is displayed. As for voice, voice included in the received signal of the communication signal CS (received phone voice)
Is transmitted from the control device 3 to the audio reproducing device 24 so that is reproduced prior to the broadcast audio.

It is also possible to input the operator's image (transmitted telephone image) captured by the camera 202 and the operator's voice (transmitted telephone voice) captured by the microphone 23 to the control device 3. Thereby, the control device 3 displays the screen 2
In addition, in addition to the broadcast image and the received telephone image, the transmitted telephone image can be displayed at the same time. Further, it is also possible to compare the sound intensity between the transmitting side and the receiving side and display the larger image on the screen 2 as compared with the other side.

The control device 3 may further include an input operation unit such as a keyboard, a remote controller, a wireless mouse or the like that enables character input. In this case, a signal representing the input character is transmitted to the communication unit 201. Is transmitted to the communication line 5 through

The control device 3 and the image display device 400 having the same as a main component are configured and operated as described above in outline, so that public television broadcast reception and private communication by a videophone or the like are performed. The convenience of both communication via signals is enhanced.

It should be noted that the control device 3 is
0 and the video phone 200 may be manufactured as a separate product that is independent of the video phone 200 and may be used by a user by connecting the video phone 300 and the video phone 200. The television receiver 300 or the television telephone 200 may be used by connecting the television receiver 300 or the television telephone 200 to each other. Further, the image display device 400 may be manufactured as a single product.

Further, the control device 3 may include a signal extraction / selection unit 302. In this embodiment, signal extraction / selection section 302 provided in television receiver 300 is not used. In this embodiment, the image reproduction device 1 and the audio reproduction device 24 may be connected to the control device 3 instead of the television receiving device 300.

In each of the following embodiments, the image display device 4
Various examples of the configuration of the control device 3 for realizing the various functions of 00 will be described in detail.

[B1. First Embodiment] FIGS. 2 and 3
The broadcast image and the received telephone image are displayed on the screen 2 as shown in FIG.
FIG. 4 is a block diagram illustrating a configuration example of a control device 3 for simultaneously displaying images on a screen. Three arrows at the right end of FIG. 2 representing transmission paths of the signals BS, CS, and RS are signals BS, C
S and RS are continuous with the three leftmost arrows. FIG.
In FIG. 3 and FIG. 3, a portion surrounded by a dotted line denoted by reference numeral 3 indicates a portion belonging to the control device 3. Similarly, the portions surrounded by the dotted lines denoted by reference numerals 200 and 300 are:
Portions belonging to the videophone device 200 and the television receiver 300 are shown.

In the example of FIG. 2, the communication line 5 is configured as a single line, and multiplexes and transmits both the broadcast signal BC and the communication signal CS. The communication line 5 is, for example, a CAT
This is a communication line for V (cable television), satellite digital broadcasting, terrestrial digital broadcasting, or CATV Internet, and multiplexes and transmits a television broadcast signal BC and a communication signal CS.

Since the broadcast signal BC and the communication signal CS are multiplexed on the single communication line 5, the control device 3 provides the signal separation and reception for separating the broadcast signal BC and the communication signal CS. A signal mixing device for further multiplexing the transmission signal of the communication signal CS and transmitting the multiplexed signal to the communication line 5,
Equipped. The signal separation / mixing device 6 in FIG. 2 includes a signal separation device and a signal mixing device. Communication signal C
An incoming signal RS for notifying of an incoming videophone call is also transmitted to the channel through which the received signal of S is transmitted. Therefore,
The signal separation / mixing device 6 also separates and extracts the incoming signal RS.

The broadcast signal BC is separated into a broadcast image and a broadcast sound for each channel by the channel / sound / image separation device 7 provided in the television receiver 300. Of the separated channels, broadcast images and broadcast sounds belonging to one or more channels selected by the operator are input to the scan converter 17 and the sound mixing device 16 belonging to the control device 3, respectively. The channel / sound / image separation device 7 is an example of the signal extraction / selection unit 302 in FIG.

The received signal of the communication signal CS is separated into the received telephone image and the received telephone sound by the audio / video separating / mixing device 8 provided in the video telephone device 200, and the scan converter 17 and the audio mixing device 16 belonging to the control device 3 are separated.
Are respectively input. The sound mixing device 16 selects one of the plurality of sounds, weakens or deletes the other sounds, and outputs it to the sound reproducing device 24. Further, the transmitted telephone image captured by the camera 202 and the transmitted telephone voice captured by the microphone 23 are mixed through the audio image separation / mixing device 8 and sent to the signal separation / mixing device 6.

The transmitted telephone voice is also sent to voice mixing device 16. In addition, incoming and outgoing telephone audio is
The sound may be input to the sound mixing device 16 via the sound level adjusting unit 15. Thereby, the received telephone voice and the transmitted telephone voice are reproduced by the voice reproducing device 24 after being adjusted to an appropriate volume.

Further, the transmitted telephone image may be inputted to the scan converter 17. About this form,
This will be described in detail in a later embodiment.

The signal output from the channel / sound / image separation device 7 is a broadcast signal BC having a form separated into image and sound for each channel, and is input to and output from the sound / image separation / mixing device 8. The signal to be transmitted is a communication signal CS having a form separated into an image and a sound. As described above, the signal separation / mixing device 6, the channel / sound / image separation device 7, and the sound / image separation / mixing device 8 convert the forms of the broadcast signal BC and the communication signal CS.

The scan converter 17 converts the form of scanning (scanning line density, pixel density, etc.) of each input image in order to simultaneously display a plurality of images on the screen 2. Each image converted by the scan converter 17 is mixed by the video mixer 18 and sent to the multi-window controller 19. Multi-window controller 19
Then, a plurality of areas are set in the screen 2 and each image is arranged in each area. In the scan converter 17, based on an instruction from the multi-window controller 19, each image is converted in advance into a scan form suitable for arrangement in each area. The output signal of the multi-window controller 19 is input to the image reproducing device 1.

As a result, as illustrated in FIG. 1, the broadcast image and the received telephone image are simultaneously displayed on the screen 2 in a multi-window format. By inputting the broadcast images of a plurality of channels to the scan converter 17, it is possible to simultaneously display the broadcast images of the plurality of channels, the received telephone images, and the multi-window format on the screen 2.

The incoming signal RS is input to the incoming detector 40. The incoming call detector 40 detects an incoming videophone call based on the incoming signal RS. The incoming call detection signal output by the incoming call detection unit 40 is input to, for example, the multi-window controller 19 and the voice mixing device 16. Thereby, the multi-window controller 19 transmits the incoming signal R
In response to S, the display format of a plurality of images on the screen 2 can be changed. Also, the voice mixing device 16 can select one of the plurality of voices in response to the incoming call detection signal. These examples will be described in detail in an embodiment below.

When the communication line 5 is a line for the Internet, as one channel of the broadcast signal BC,
It is also possible to include a reception signal of information provided to an unspecified majority through the Internet. In this example, screen 2
Is divided into, for example, areas 2a, 2b, and 2c, and a received telephone image, Internet information, and a broadcast image are displayed, respectively.

FIG. 2 shows an example in which the communication line 5 is a multiplex line, but the present invention is not limited to this example. In the case where the communication line 5 is not a multiplex line, FIG.
Is replaced with, for example, FIG. In the example of FIG. 5, the broadcast signal BC is transmitted through an analog line 30, and the communication signal CS is transmitted through another analog line 31.
The analog line 30 is, for example, a terrestrial broadcast radio line. The analog line 31 is, for example, a public telephone line.

In this embodiment, the television receiver 300 includes a broadcast tuner 32 as a signal extraction / selection unit 302.
Is provided. The broadcast tuner 32 outputs an analog broadcast signal BC separated into an image and a sound for each channel. The control device 3 includes an analog-to-digital converter 3
The analog broadcast signal BC is converted into a digital broadcast signal BC through the analog-to-digital converter 34.

The video telephone apparatus 200 includes a communication transmission / reception device 33, and a reception signal included in the communication signal CS is separated into a reception telephone image and a reception telephone voice through the communication transmission / reception device 33. The analog reception signal separated into an image and a sound is converted into a digital reception signal by the analog-to-digital converter 34. Also,
The transmitted telephone image and transmitted telephone sound in digital form are converted into an analog form through an analog-to-digital converter 34 and input to the communication transmitter / receiver 33. Further, the incoming signal RS is also converted from an analog format to a digital format through the analog-to-digital converter 34.

[B2. Embodiment 2] In this embodiment,
When the broadcast image is displayed on the screen 2 and the broadcast sound is being reproduced from the sound reproducing device 24, that is, when the operator is watching the television broadcast, if there is an incoming videophone call, it responds to this. The control device 3 operates to preferentially reproduce the received telephone sound. That is, after an incoming call, the intensity of the broadcast sound is low or suppressed to zero, and the received telephone sound is reproduced at a higher intensity. FIG.
FIG. 3 is a block diagram showing a partial configuration of a control device 3 for enabling this operation.

The control device 3 includes a sound mixing device 41 instead of the sound mixing device 16 of FIG. The sound mixing device 41 includes amplifiers 42 to 44 having variable gains and an adder 45. The part of the sound mixing device 41 except for the amplifier 44 is the sound mixing device 1 shown in FIG.
Equivalent to 6.

The gains of the amplifiers 42 to 44 are controlled by an incoming call detection signal output by the incoming call detection section 40. That is, when the incoming signal RS is received and the incoming detection signal is output from the incoming detection unit 40, the gain of the amplifier 42 for amplifying the broadcast audio is turned off or reduced, and the amplifier 43 for amplifying the received telephone audio is turned off. The gain is switched from off to on. Further, the gain of the amplifier 44 for amplifying the transmission telephone voice is also switched from off to on.

It is to be noted that, even if the voice mixing device 16 without the amplifier 44 is used in place of the voice mixing device 41, the operation of reproducing the received telephone voice in preference to the broadcast voice when there is an incoming call is realized. It is possible. Also, the sound mixing device 4
The audio passing through 1 or 16 may be in digital or analog form. By appropriately arranging the analog-to-digital conversion circuit in the signal path, it is possible to make the form of the signal transmitted through the path a desired form.

[B3. Embodiment 3] In this embodiment,
When the broadcast image is displayed on the screen 2 and the broadcast sound is being reproduced from the sound reproducing device 24, that is, when the operator is watching the television broadcast, if there is an incoming videophone call, it responds to this. Screen 2 for receiving phone image and broadcast image
The control device 3 operates so as to simultaneously play back the images. FIG.
Is a schematic diagram illustrating this operation. In the example of FIG.
Before an incoming call, a broadcast image is displayed on the screen 2 (FIG. 7 (a)). When there is an incoming call, both images are displayed simultaneously in a format in which a part of the broadcast image is replaced with a received telephone image. (FIG. 7 (b)). That is, after an incoming call, a broadcast image is displayed in an area 2a where the center is cut out, and a received telephone image is displayed in an area 2b corresponding to the cut out center.

FIG. 8 is a block diagram showing a partial configuration of the control device 3 for enabling this operation. The control device 3 includes a scan converter 17 shown in FIG.
An image mixing device 51 is provided instead of the video mixer 18. The image mixing device 51 includes switches 52 and 53,
Display position / size control units 54 and 55, scan converters 56 and 57, video mixer 58, and image frame memory 59 are provided. The broadcast image (generally, a plurality of images corresponding to a plurality of channels) is transmitted to a display position / size control unit 54 by a switch 52 so as to be freely turned on and off, and further transmitted to a video mixer 58 via a scan converter 56. On the other hand, the received telephone image can be freely turned on and off by the switch 53.
5, and further transmitted to the video mixer 58 via the scan converter 57.

The display position / size control units 54 and 55 control the display position and size of the input image.
The scan converters 56 and 57 convert the scan mode of the input image so as to correspond to the display position and size specified by the display position / size control units 54 and 55. The video mixer 58 mixes both images by temporarily storing the images in the image frame memory 59. Note that the video mixer 58 can be configured to mix both images without the image frame memory 59.

The switch 53 and the display position / size control unit 55 are controlled by an incoming call detection signal output by the incoming call detection unit 40. That is, the incoming signal RS is received,
As a result, when the incoming call detection signal is output from the incoming call detection unit 40, the switch 53 is switched from off to on. At the same time, the display position / size control unit 55
The display position and size of the area 2b in FIG. 7 are designated. The scan converter 57 converts the scan form of the input received telephone image into a form corresponding to the area 2b based on the scan form. As a result, both images are simultaneously displayed on the screen 2 in the form shown in FIG.

[B4. Fourth Embodiment] In the present embodiment,
When broadcast images of a plurality of channels are simultaneously displayed in a plurality of areas having different sizes in the screen 2, for example, in a multi-window format, that is, when an operator is watching a TV broadcast of a plurality of channels. In response to an incoming videophone call, the control device 3 operates to display the received telephone image in the largest area in response to the incoming call and display the broadcast image in the remaining area. FIG. 9 is a schematic diagram illustrating this operation. In the example of FIG. 9, before an incoming call, a plurality of broadcast images are divided into three (generally, a plurality) areas 2 formed by dividing the screen 2.
a to 2c (FIG. 9A).

The plurality of regions 2a to 2c are set so as to include regions having different sizes from each other. In the example of FIG. 9, the sizes of all the regions are different from each other, and are set to be larger in the order of the regions 2a, 2b, and 2c. Usually, the operator mainly views the broadcast image of the area 2a having the largest size.

When a videophone call arrives, a received telephone image is displayed in the area 2a having the largest size (FIG. 9).
(b)). At the same time, the plurality of broadcast images are sequentially moved to a smaller area and displayed.

FIG. 10 is a block diagram showing a partial configuration of the control device 3 for enabling this operation. The control device 3 includes an image mixing device 60 instead of the scan converter 17 and the video mixer 18 in FIG. A switch group 61,
The display position / size control units 62 and 63, the scan converters 64 and 65, the video mixer 67, and the image frame memory 66 are provided. The plurality of broadcast images are transmitted to a display position / size control unit 62 by a switch group 61 so as to be freely turned on and off, and further transmitted to a video mixer 67 via a scan converter 64. On the other hand, the received telephone image is transmitted to the display position / size control unit 63 by a switch group 61 so as to be freely turned on and off, and further transmitted to the video mixer 67 via the scan converter 65.

The display position / size control units 62 and 63 control the display position and size of the input image.
The scan converters 64 and 65 convert the scan form of the input image so as to correspond to the display position and size specified by the display position / size control units 62 and 63. The video mixer 67 mixes both images by temporarily storing the images in the image frame memory 66. It should be noted that the video mixer 67 can be configured to mix both images without the image frame memory 66.

The switch group 61 and the display position / size control units 62 and 63 are controlled by an incoming call detection signal output by the incoming call detection unit 40. That is, when the incoming signal RS is not received and the incoming detection unit 40 does not output the incoming detection signal, the switch group 61 includes a plurality of switches (3 in the example of FIG. 9).
Are transmitted to the display position / size control unit 62. Further, the display position / size control unit 62 instructs, for example, display positions and sizes corresponding to the regions 2a, 2b, and 2c in FIG. 9A as display positions and sizes of a plurality of broadcast images. Further, the switch group 61 does not transmit the received telephone image to the display position / size control unit 63.

On the other hand, when the incoming call signal RS is received and the incoming call detection signal is output from the incoming call detection section 40, the switch group 61 moves to the area having the smallest size among the plurality of broadcast images (FIG. 9). In the example, the transmission of the broadcast image displayed in the area 2c) is stopped. At the same time, switch group 6
1 starts transmission of the received telephone image. The display position / size control unit 62 instructs the display positions and sizes of the other areas 2b and 2c excluding the area 2a having the largest size with respect to the input broadcast image. Further, the display position / size control unit 63 instructs the display position and the size of the area 2a having the largest size with respect to the received telephone image. As a result, FIG.
The image display illustrated in (b) is realized.

[B5. Fifth Embodiment] In the present embodiment,
A control device that superimposes a character representing information related to the broadcast signal BC or the communication signal CS on the screen 2 on which the broadcast image or the received telephone image or both are dedicated (so-called superimposed). 3 operates. In addition, the characters are displayed at appropriate portions of the screen 2 in consideration of the movement of the background image and the presence or absence of other characters. That is, as a part where characters are to be displayed, a part where the movement of the image is small and a part where the character does not exist in the image are selected. Alternatively, the color of the character is selected in consideration of the color of the background image so that the contrast is clear. Here, when selecting "color",
Fixing the lightness and selecting only the color, fixing the color and selecting the lightness, or fixing neither and selecting from a wide combination of both. .

FIGS. 11 and 12 are schematic diagrams illustrating the above operation. In the example of FIG. 11, the channel number “2Ch”, which is information on the broadcast signal BC, is displayed in a clear color in comparison with the background. In the example of FIG. 12, the channel number “2Ch” is displayed at a position separated from the character “10:00” representing the time as a part of the broadcast image.

FIG. 13 is a block diagram showing a partial configuration of the control device 3 for enabling the above operation. The control device 3 includes an image frame memory 70, a color detection unit 71, a motion detection unit 72, a character detection unit 77, and a display position determination shown in FIG. 13 in addition to the configuration of FIG. 2 (or FIG. 5) and FIG. Unit 73, character color determination unit 74, display character generation unit 7
5 and a screen synthesizing unit 76.

The image frame memory 70 is, for example, as shown in FIG.
Multi-window controller 19 and image reproducing apparatus 1
Interposed between. The image frame memory 70 holds a plurality of frames of images to be displayed while being constantly updated. The color detection unit 71 detects the color of the image of the part where the character is to be displayed. The motion detecting section 72 detects a motion of an image of a part where a character is to be displayed. The motion detection unit 72 uses a well-known technique of comparing images between a plurality of frames,
Detect movement. In addition, the character detection unit 77 determines whether the image of the part where the character is to be displayed includes the character. The character detection unit 77 determines the presence of a character using a known image recognition technology. Each of the detection units 71, 72, and 77 sequentially selects a plurality of parts or all parts over the entire screen as parts to display characters, and detects each of them.

The display position determining section 73 includes the detecting sections 71 and 7
Based on the result of the detection by 2, 77, the position where the character is to be displayed is determined. That is, a part with little movement and a part where no character exists are determined as positions where characters are to be displayed (character display positions). Character color arrangement determination unit 7
4 receives the information on the color of the image at the determined character display position from the color detection unit 71 and determines the color of the character to be displayed as a color that is visually distinct from the color of the image. As the color having a clear contrast, for example, a color having an opposite relationship and a lightness having an inverted relationship are selected.

The display character generator 75 generates characters to be displayed. For example, regarding the broadcast signal BC, the number of the broadcast channel, and regarding the communication signal CS, the telephone number of the other party of the call is generated as characters to be displayed. Moreover,
The display character generation unit 75 generates a character to be displayed in the color determined by the character arrangement determination unit 74.

The screen synthesizing unit 76 is provided with the image frame memory 7
The display character generation unit 75 generates the display character generation unit 75 at the character display position determined by the display position determination unit 73 for the image frame to be sent out to the image reproduction device 1 and displayed next among the image frames stored in the image reproduction unit 1. Place the character that you did. As a result, characters are displayed on the screen 2 of the image reproducing apparatus 1 in a form illustrated in FIG. 11 or FIG. The character display position and the color of the character change following the state of the image.

The control device 3 of the present embodiment receives not only the image display device 400 receiving both the broadcast signal BC and the communication signal CS but also a single signal containing an image, The present invention is also applicable to a device for displaying on the screen 2 of FIG. For example, only the broadcast signal BC is received, and the television receiver 300 is incorporated in the television receiver 300 not intended to receive the communication signal CS. Only the broadcast image is displayed on the screen 2, and the broadcast image is illustrated in FIG. 11 or FIG. It is also possible to configure the control device 3 such that characters are displayed on the display.

[B6. Sixth Embodiment] In the present embodiment,
As illustrated in FIGS. 14 and 15, a broadcast image, a received telephone image (partner image), and a transmitted telephone image (own image) are simultaneously displayed on the screen 2. Then, between the communication partner of the videophone and the operator, the image with the higher voice intensity is displayed larger than the other.

In the example of FIG. 14, a broadcast image is displayed in an area 2a as a background area in the screen 2, and a self-portrait is displayed in an area 2b and a partner image is displayed in an area 2c in a form in which a part of the broadcast image is replaced. When the operator has a higher voice intensity than the other party, the other party image is displayed smaller and the self image is displayed larger (FIG. 14A). Conversely, when the other party has a higher voice strength than the operator, the other party image is displayed. The self-portrait is displayed large and the self-portrait is displayed small (FIG. 14B). Both images change only in size without changing their position.

On the other hand, in the example of FIG.
Are divided into a large area 2a and small areas 2b and 2c, and the broadcast image is displayed in the small area 2c.
The other party's image and self-portrait can be
The large area 2a and the small area 2b alternate alternately. When the operator has a higher voice intensity than the partner, the self-portrait is displayed in the area 2a, and the partner image is displayed in the area 2b (FIG. 15A). Conversely, when the other party has a higher voice intensity than the operator, the other party's image is displayed in the area 2a, and the self image is displayed in the area 2b (FIG. 15B). That is, by changing the display position of both images,
Change the size.

FIG. 16 is a block diagram showing a partial configuration of control device 3 for enabling the operation of FIG. 14 or FIG. The control device 3 includes a change control unit 8 instead of the scan converter 17 and the video mixer 18 of FIG.
1 and a comparison processing unit 80.

The change control unit 81 includes display position / size control units 82, 83, 84, scan converters 85, 8.
6, 87, a video mixer 89, and an image frame memory 88. The broadcast image is transmitted to the display position / size control unit 82, and further transmitted to the video mixer 89 via the scan converter 85. The received telephone image is transmitted to the display position / size control unit 83, and further passes through the scan converter 86 to the video mixer 89.
Conveyed to. The transmitted telephone image is transmitted to the display position / size control unit 84, and further transmitted to the video mixer 89 via the scan converter 87.

The display position / size control units 82 to 84 control the display position and size of the input image.
The scan converters 85 to 87 convert the scan form of the input image so as to correspond to the display position and size specified by the display position / size control units 82 to 84. The video mixer 89 mixes both images by temporarily storing the images in the image frame memory 88. Note that the video mixer 89 can be configured to mix both images without the image frame memory 88.

The comparison processing unit 80 compares the strength between the received telephone voice (the other party's voice) and the transmitted telephone voice (the own voice). The display position / size control units 83 and 84 display both images to display the partner image and the own image in the form shown in FIG. 14 or FIG. Change the position and / or display size. As a result, the image display illustrated in FIG. 14 or FIG. 15 is realized.

The control device 3 of the present embodiment receives not only the image display device 400 that receives both the broadcast signal BC and the communication signal CS but also the communication signal CS, and displays the screen 2 of the image reproduction device 1. The present invention is also applicable to a device that displays the information. For example, only the communication signal CS is received and the broadcast signal BC is not scheduled to be incorporated in the videophone device 200, and only the received telephone image and the transmitted telephone image are displayed on the screen 2 in the form illustrated in FIG. 14 or FIG. It is also possible to configure the control device 3 as described above.

[B7. Seventh Embodiment] In the present embodiment,
Assuming that the communication signal CS includes a character signal expressing a character or a signal indicating an option, the operator can input a character or select from among the options displayed on the screen 2 Thus, the control device 3 is configured. In addition, as illustrated in FIG. 17, a part including a character being input in a character group displayed on the screen,
Alternatively, a part selected from the options displayed on the screen is enlarged and displayed.

In the example of FIG. 17, the screen 2 is divided into areas 2a, 2b, and 2c in a multi-window format, and the area 2a is assigned to an area for displaying a group of characters to be input. The other party's image is displayed in the area 2b, and the area 2c is displayed.
Shows a broadcast image. The character group displayed in the area 2a is a character group input by the operator to be transmitted to the communication partner of the videophone. Among them, only the bottom line including the character that is being input by the operator is enlarged and displayed.

Although not shown in the figure, a signal representing an option included in the received signal of the communication signal CS is used in FIG.
For example, in a region 2a of No. 7, options over a plurality of lines are displayed (character strings in three lines in FIG. 17 may be replaced with display of three options). When the operator selects (lower 17 options), some of the selected options are changed (as shown in FIG. 17).
It is displayed enlarged.

Thus, the operator can easily input characters or select options. In particular, when using the screen 2 on which a broadcast image can be displayed and inputting characters or selecting an option through a videophone while watching the broadcast image, the distance between the screen 2 and the operator is determined. Is often large. However, since a part of the character group including the input character or a part selected from the options is enlarged and displayed, the operator can keep the distance from the screen 2 as it is while inputting the character or selecting the character. The contents can be confirmed visually.

In the present embodiment, not only a part of a character group including a character being input or a part of a selected option, but also a desired part of the character group by an operation of an operator. Alternatively, the control device 3 is designed so that a desired part of the options can be enlarged or reduced.
Is configured. For example, in the example of FIG. 17, the operator can selectively enlarge and display only the character string in the top line by designating the character string in the top line and instructing enlargement.

FIG. 18 is a block diagram showing a partial configuration of the control device 3 for enabling the above operation. The control device 3 includes an input operation unit 90 and a character display unit 9 shown in FIG. 18 in addition to the configuration shown in FIG. 2 (or FIG. 5) and FIG.
1. Enlarged (reduced) display unit 95, image frame memory 10
0, a memory 101, and a transmission unit 102. The various image display processing units 99 correspond to the scan converter 17, the video mixer 18, and the multi-window controller 19 in FIG. Alternatively, the various video display processing units 99 may include the image mixing device 51 (FIG. 7) of the third embodiment, the image mixing device 60 (FIG. 10) of the fourth embodiment, or the change control unit 81 (FIG. 10) of the sixth embodiment. FIG. 16).

The input operation unit 90 is an input device that enables input of characters, selection of options, or designation of enlarged (reduced) display, and includes, for example, a keyboard and a mouse. The character display unit 91 is a device unit that inputs a character on the screen 2, selects an option, or instructs enlargement (reduction) display based on an operation of the input operation unit 90.

To input a character to the screen 2, the screen 2 determined by the position determination unit 93 based on the operation of the input operation unit 90
The character designated based on the operation of the input operation unit 90 is input by the character input unit 93 to the position in the box. That is, a character is written to a corresponding portion in the image stored in the frame memory 100. The character position is
The information is transmitted to the enlargement (reduction) operation unit 96.

The enlargement (reduction) operation section 96 includes the position determination section 9
The area corresponding to the line to which the character being input belongs in the image stored in the image frame memory 100 is enlarged based on the position information transmitted by 3. The calculation for enlargement is performed by copying a corresponding area in the image stored in the image frame memory 100 to the image frame memory 97 and using the image frame memory 97 as a calculation buffer. Image frame memory 97 after enlargement has been performed
Is then written back to the image frame memory 100. The above operation realizes the enlarged display of the line including the character being input.

The input characters are displayed on the screen 2 and simultaneously written into the memory 101. If there is an instruction from the operator, the instruction is transmitted from the memory 101 to the transmission unit 102 in response to the instruction. The transmission unit 102, for example,
The character group temporarily stored in the memory 101 is sent to the signal separation / mixing device 6 of FIG. Thereby, the input character group is transmitted to the communication partner of the videophone.

When selecting an option, first, the option is displayed on the screen 2. The signal representing the option is included, for example, in the received telephone image as part of the image. The operator operates the input operation unit 90 to display the screen 2
Is instructed to select some of the options displayed in. The position determination unit 93 determines which option (one or more) has been selected based on the operation of the input operation unit 90. The position information output by the position determination unit 93 is also transmitted to the enlargement (reduction) calculation unit 96. Enlargement (reduction) calculation section 9
6 enlarges an area in which some selected options in the image stored in the image frame memory 100 are displayed based on the position information. The contents of the image frame memory 97 after the enlargement is performed are then written back to the image frame memory 100. The above operation realizes the enlarged display of some of the selected options.

The position information output by the position determining unit 93 is also stored in the memory 101 as a signal representing the selection result, that is, a signal representing which option has been selected. If there is an instruction from the operator, the instruction is transmitted from the memory 101 to the transmission unit 102 in response to the instruction. Thereby, the selection result is transmitted to the communication partner of the videophone.

To enlarge or reduce an arbitrary part of the character group displayed on the screen 2, the operator operates the input operation unit 90 to enlarge or reduce the character on the screen 2. The area to be reduced and the ratio of enlargement and reduction are specified. Information on the designated area is stored in the position determination unit 93.
Is transmitted to the enlargement (reduction) operation unit 96, and information on the ratio of enlargement or reduction is transmitted to the enlargement (reduction) operation unit 96 by the operation determination unit 94.

The enlargement (reduction) operation section 96 enlarges or reduces a designated area in an image stored in the image frame memory 100 at a designated ratio based on these pieces of information. The contents of the image frame memory 97 after the enlargement or reduction is completed are then written back to the image frame memory 100. By the above operation, the enlarged display or the reduced display at the designated ratio to the designated area on the screen 2 is realized.

[B8. Eighth Embodiment] In this embodiment,
When the broadcast image is displayed on the screen 2 and the broadcast sound is being reproduced from the sound reproducing device 24, that is, when the operator is watching the television broadcast, if there is an incoming videophone call, it responds to this. Broadcast signal BC being reproduced,
The control device 3 operates so that recording of the image and the sound being reproduced is started. The operator, for example, can play back the recorded images and sounds after the end of the videophone call, so that the broadcast contents whose viewing has been interrupted during the call can be watched.

FIG. 19 is a block diagram showing a partial configuration of control device 3 for enabling this operation. The control device 3 includes a recording control unit 111 and an audio / video recording device 110 shown in FIG. 19, in addition to the configuration shown in FIG. 2 (or FIG. 5) and FIG. Combining / switching processing unit 1
Reference numeral 12 corresponds to the scan converter 17, the video mixer 18, and the multi-window controller 19 in FIG. Alternatively, the combining / switching processing unit 112 includes the image mixing device 51 (FIG. 7) of the third embodiment, the image mixing device 60 (FIG. 10) of the fourth embodiment, or the change control unit 81 of the sixth embodiment. (FIG. 16). The video / audio input / output unit 113 corresponds to the image reproduction device 1, the audio reproduction device 24, the camera 22, and the microphone 23 in FIG.

When the incoming call signal RS is received and the incoming call detection signal is output from the incoming call detection unit 40, the recording control unit 111 responds to this and responds to the broadcast signal B being reproduced.
The recording of C into the audio / video recording device 110 is started. The recording of the broadcast signal BC may be automatically terminated when the communication is completed by detecting the completion of the communication by the videophone, or may be continued until the operator operates.

If a broadcast image of a plurality of channels is being reproduced when a videophone call is received, a broadcast signal BC of a plurality of channels being reproduced is recorded. The audio / video recording device 110 is, for example, a video tape recorder (VT).
R) or HDR.

[B9. Modification] In the above embodiment, an example has been described in which the communication signal CS is a communication signal that mediates communication by the videophone device 200.
0, the surveillance camera 2 as illustrated in FIG.
50 (FIG. 20 (a)), remote controller 251 (FIG. 20 (b)),
Alternatively, it may be a communication signal that mediates communication by the TV door phone 252 (FIG. 20C).

That is, in FIG. 1, the videophone device 200 may be replaced with a monitoring camera 250, a remote controller 251 or a video doorphone 252.
FIG. 20 simultaneously illustrates the types and directions of signals exchanged for each terminal. That is, the communication signal CS to be processed by the control device 3 is generally
At least the received signal may be a private communication signal including an image.

[0109]

According to the device of the first invention, the image of the television broadcast and the image of the private communication are simultaneously displayed on the screen.
Convenience in using both communications is enhanced.

In the device of the second invention, since a signal separating device is provided, it can be used by connecting to a communication line in which both signals are multiplexed.

In the device of the third invention, since the signal mixing device is provided, it can be used by connecting to a communication line in which a television broadcast signal and a bidirectional private communication signal are multiplexed.

In the device of the fourth invention, the sound of the private communication is reproduced at a higher intensity than the sound of the television broadcast in response to the incoming signal, so that the convenience is further enhanced.

In the device according to the fifth aspect of the present invention, the television broadcast image and the private communication image are simultaneously displayed in response to the incoming signal, so that the convenience is further enhanced.

In the device according to the sixth aspect of the present invention, a part of the image of the television broadcast is replaced with the image of the private communication in response to the incoming signal, so that the convenience is further improved.

In the device according to the seventh aspect of the present invention, in response to an incoming signal, an image of a television broadcast and an image of a private communication are simultaneously displayed in a screen division format, and the private communication image is displayed in a maximum area. Since it is displayed, convenience is further enhanced.

In the device according to the eighth aspect of the present invention, characters representing information related to a television broadcast signal or a private communication signal are displayed so as to be superimposed on an image displayed by those signals, so that the convenience is further enhanced.

In the device according to the ninth aspect, the character display position is
Since it is determined to be a portion where the movement of the image is small, it is easy to visually recognize the character.

In the device according to the tenth aspect, the character display position is determined in a portion having no other characters, so that the characters can be visually recognized easily.

In the device according to the eleventh aspect, since the color of the character is determined to be a clear color in comparison with the color of the image at the character display position as the background, the character can be visually recognized easily. .

In the apparatus according to the twelfth aspect, an image of a television broadcast and a self-portrait and a partner image of two-way private communication are
Since the information is displayed at the same time, the convenience is further enhanced.

In the device according to the thirteenth aspect, since the image with the higher voice intensity is displayed larger between the other party of the private communication and the own side than the other, the convenience is further enhanced.

In the device according to the fourteenth aspect, when characters are transmitted through private communication, a part (for example, a line being input) of the input character group including the character being input is enlarged. , The convenience is further enhanced. In particular, it becomes easy to input characters while maintaining the distance between the operator and the screen when watching a television broadcast.

In the device according to the fifteenth aspect, when an option is selected through private communication, a part selected from the options is enlarged and displayed, so that the convenience is further enhanced. In particular, the selection operation can be easily performed while maintaining the distance between the operator and the screen when watching a television broadcast.

In the device according to the sixteenth aspect, the desired area on the screen can be enlarged and reduced at a desired ratio based on the operation of the operator, so that the convenience is further enhanced.

In the device of the seventeenth aspect, when there is an incoming private communication, the recording of the television broadcast signal is started in response to this, so that the user can view the television broadcast whose viewing has been interrupted by the private communication. The content can be viewed later.

In the device according to the eighteenth aspect, since the private communication signal is the communication signal of the videophone, the convenience concerning the use of both the videophone and the video broadcast is enhanced.

In the device according to the nineteenth aspect, characters are displayed so as to be superimposed on the image, and the character display position is determined in a portion where the movement of the image is small, so that the characters can be visually recognized easily.

In the device according to the twentieth aspect, characters are displayed so as to be superimposed on the image, and the character display position is determined in a portion where no other characters exist, so that the characters can be visually recognized easily.

In the device according to the twenty-first aspect, a character is superimposed on an image and displayed, and the color of the character is determined to be a clear color in comparison with the color of the image at the character display position as a background. This makes it easy to visually recognize the characters.

In the device according to the twenty-second aspect, the image with the higher voice intensity is displayed larger between the other party of the private communication and the own side than the other, which is convenient for using the private communication. Sex is enhanced.

In the device according to the twenty-third aspect, the first to the second
The image display device according to the second aspect of the present invention can be configured, whereby highly convenient communication can be used.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a basic configuration of an image display device according to an embodiment.

FIG. 2 is a partial block diagram of a configuration of a control device according to the first embodiment.

FIG. 3 is a block diagram of the remaining part of the configuration of the control device according to the first embodiment;

FIG. 4 is a schematic diagram illustrating an operation of the image display device according to the first embodiment;

FIG. 5 is a block diagram illustrating another configuration example of the control device according to the first embodiment;

FIG. 6 is a block diagram of a part of a configuration of a control device according to a second embodiment.

FIG. 7 is a schematic diagram illustrating an operation of the image display device according to the third embodiment;

FIG. 8 is a partial block diagram of a configuration of a control device according to a third embodiment.

FIG. 9 is a schematic diagram showing an operation of the image display device according to the fourth embodiment.

FIG. 10 is a partial block diagram of a configuration of a control device according to a fourth embodiment.

FIG. 11 is a schematic diagram showing an operation of the image display device according to the fifth embodiment.

FIG. 12 is a schematic diagram illustrating an operation of the image display device according to the fifth embodiment.

FIG. 13 is a partial block diagram of a configuration of a control device according to a fifth embodiment.

FIG. 14 is a schematic diagram illustrating an operation of the image display device according to the sixth embodiment.

FIG. 15 is a schematic diagram showing an operation of the image display device according to the sixth embodiment.

FIG. 16 is a block diagram of a part of a configuration of a control device according to a sixth embodiment.

FIG. 17 is a schematic diagram illustrating an operation of the image display device according to the seventh embodiment.

FIG. 18 is a partial block diagram of a configuration of a control device according to a seventh embodiment.

FIG. 19 is a block diagram of a part of a configuration of a control device according to an eighth embodiment.

FIG. 20 is a block diagram of a part of the configuration of an image display device according to a modification.

FIG. 21 is a block diagram illustrating a configuration of a conventional image display device.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 image reproducing device 2 screen 3 control device 5, 30, 31 communication line 6 signal separation / mixing device (signal mixing device; signal separation device) 16, 41 sound mixing device 24 sound reproduction device 40 incoming call detection unit 51, 60 image mixing device 73 display position determination unit 74 character color determination unit 75 display character generation unit 76 screen synthesis unit 80 comparison processing unit 81 change control unit 90 input operation unit 91 character display unit 95 enlargement (reduction) display unit (enlargement display unit; enlargement / reduction display) Unit) 102 transmitting unit 110 recording device 111 recording control unit 200 video telephone device 400 image display device BS television broadcast signal CS communication signal (private communication signal) RS incoming signal

Claims (23)

[Claims] An image reproducing apparatus for displaying an image on a screen, a television broadcast signal including the image and a reception signal including the image included in a private communication signal are received, and both images are simultaneously displayed on the screen. An image display device comprising: 2. The television broadcast signal and the private communication signal are multiplexed on a single communication line, and the control device separates the two multiplexed signals to form the single communication signal. The image display device according to claim 1, further comprising: a signal separation device that extracts the television broadcast signal and the reception signal of the private communication signal from the communication line. 3. The signal, wherein the private communication signal is a bidirectional communication signal including a transmission signal in addition to the reception signal, and wherein the control device multiplexes the transmission signal onto the single communication line and transmits the signal. The image display device according to claim 2, further comprising a mixing device. 4. The apparatus according to claim 1, further comprising a voice reproducing device, wherein the private communication signal includes a voice signal in the received signal and an incoming signal for notifying an incoming signal in addition to the received signal. An incoming call detection unit that detects an incoming signal, and when the incoming call detection unit detects the incoming signal, in response to the sound, the sound included in the received signal of the private communication signal is included in the television broadcast signal. A sound mixing device that outputs to the sound reproduction device with a higher intensity than the sound,
The image display device according to claim 1 provided. 5. The personal communication signal includes an incoming signal for notifying an incoming signal in addition to the received signal, wherein the control device detects an incoming signal, and an image of the television broadcast signal. 2. The image mixing device according to claim 1, further comprising: an image mixing device that displays both images on the screen simultaneously when the incoming signal is detected by the incoming detection unit while the image is displayed on the screen. Image display device. 6. The image mixing apparatus, wherein, when the incoming signal is detected by the incoming signal detection unit, a partial area of an image of the television broadcast signal is responsive to the received signal of the private communication signal. In the form of replacing with an image,
The image display device according to claim 5, wherein both images are simultaneously displayed on the screen. 7. The image mixing device, wherein, when the incoming signal is detected by the incoming signal detection section, the two image areas are defined in different sizes in the screen in response to the incoming signal. While displaying and displaying each, the largest of the two image areas,
The image display device according to claim 5, wherein an image of the received signal of the private communication signal is arranged. 8. The display device according to claim 8, wherein the control device is configured to generate a character signal that expresses the information related to the television broadcast signal or the information related to the private communication signal in characters. The screen combining unit according to claim 1, further comprising: a screen combining unit configured to display the television broadcast signal or the private communication signal displayed on the screen in an overlapping manner on an image of the received signal in a character display position set therein. Image display device. 9. The image display according to claim 8, wherein the control device further comprises: a display position determining unit that determines, as the character display position, a portion with little motion in the image displayed on the screen. apparatus. 10. The display device according to claim 8, wherein the control device further comprises: a display position determining unit that determines a portion without another character in the image displayed on the screen as the character display position. Image display device. 11. The control device further comprises: a character color determination unit that determines, as the color of the character, a color having a clear contrast with the color of the image at the character display position; The image display device according to claim 8, wherein the character is generated with the color determined by the character color determination unit. 12. The private communication signal is a two-way communication signal including a transmission signal in addition to the reception signal, wherein both the reception signal and the transmission signal include an image. The image display device according to claim 1, wherein the image of the reception signal, the image of the transmission signal, and the image of the television broadcast signal are simultaneously displayed on the screen. 13. The comparison processing unit, wherein both the reception signal and the transmission signal include a voice, wherein the control device compares the strength of the voice of the reception signal with the strength of the voice of the transmission signal; A change control unit configured to display, on the screen, an image belonging to the higher-strength signal among the reception signal and the transmission signal on the screen based on a result of the comparison by the processing unit. Item 13. The image display device according to Item 12. 14. The private communication signal is a two-way communication signal including a transmission signal in addition to the reception signal, wherein the control device includes: an input operation unit configured to input a character based on an operation of an operator; A character display unit for displaying the input character group on the screen; and displaying, in an enlarged manner, a part of the character group displayed on the screen including the character being input on the input unit. The image display device according to claim 1, further comprising: an enlarged display unit; and a transmission unit configured to transmit a character signal representing the input character group as the transmission signal. 15. The private communication signal is a two-way communication signal including a transmission signal in addition to the reception signal, wherein the reception signal includes a signal indicating an option, and the control device includes: An input operation unit for selecting an option displayed on the screen based on a user operation, and displaying a part of the options displayed on the screen selected by the input unit in an enlarged manner The image display device according to claim 1, comprising: an enlarged display unit; and a transmission unit that transmits a signal representing a selection result as the transmission signal. 16. An input operation unit for designating a partial area in the screen and an enlargement / reduction ratio based on an operation of an operator, wherein the control device includes: The image display device according to claim 1, further comprising: an enlargement / reduction display unit configured to enlarge or reduce an image of the specified partial area at the specified ratio. 17. The private communication signal includes, in addition to the received signal, an incoming signal for notifying an incoming call, wherein the control device is configured to: record the television broadcast signal; and detect the incoming signal. The incoming call detecting unit according to claim 1, further comprising: an incoming call detecting unit; and a recording control unit that starts recording of the television broadcast signal to the recording device in response to the incoming call signal being detected by the incoming call detecting unit. Image display device. 18. The image display device according to claim 1, wherein the private communication signal is a videophone communication signal. 19. An image reproducing device for displaying an image on a screen, and a control device for receiving a signal including the image and displaying the image on the image reproducing device, wherein the control device generates a character signal. A display character generation unit; a display position determination unit that determines a portion with little motion as a character display position in the image displayed on the screen; and the determined character display position is displayed on the screen. An image display device comprising: a screen combining unit configured to display the character by superimposing the character on the image of the signal. 20. An image playback device for displaying an image on a screen, and a control device for receiving a signal including the image and displaying the image on the image playback device, wherein the control device generates a character signal. A display character generation unit, a display position determination unit that determines a part without another character in the image displayed on the screen as a character display position, and a display on the screen at the determined character display position. And a screen synthesizing unit for displaying the characters superimposed on the image of the signal to be displayed. 21. An image playback device for displaying an image on a screen, and a control device for receiving a signal including the image and displaying the image on the image playback device, wherein the control device includes: And a character color determination unit that determines a color in which the color of the image of the signal displayed on the screen is clear, and a character signal representing a character having the color determined by the character color determination unit. An image display device, comprising: a display character generation unit that generates a character; and a screen synthesis unit that displays the character on the image of the signal displayed on the screen in the region. 22. An image reproducing device for displaying an image on a screen, and a control device for simultaneously displaying an image of a transmission signal and an image of a received signal included in the bidirectional communication signal on the image reproducing device, Both the reception signal and the transmission signal include a voice, the control device compares a voice of the reception signal with a voice of the transmission signal, and a comparison result of the comparison processing unit. An image display device comprising: a change control unit configured to display, on the screen, an image belonging to the higher-strength signal among the reception signal and the transmission signal, based on the received signal and the transmission signal, so as to be larger than the other signal. 23. The control device according to claim 1, wherein: