WO2013161455A1

WO2013161455A1 - Output device, display device, display system, program, and computer-readable recording medium

Info

Publication number: WO2013161455A1
Application number: PCT/JP2013/057855
Authority: WO
Inventors: 拓人依田; 和真内藤; 佳典本
Original assignee: シャープ株式会社
Priority date: 2012-04-25
Filing date: 2013-03-19
Publication date: 2013-10-31
Also published as: JP2013229761A

Abstract

A display system having a high degree of usability is provided. This display system (1) includes a video signal, an output device (100) for outputting source identifying information for identifying the feed source and the type of the video signal, and a display device (200) for playing back the video represented by the video signal, while applying a playback parameter of each item of the source identifying information.

Description

Output device, display device, display system, program, and computer-readable recording medium

The present invention relates to a technique for setting a playback parameter to be applied to playback of the video signal between an output device that outputs the video signal to the display device and a display device that plays back the video represented by the video signal. .

Television receivers (televisions) are required to have a function of reproducing a wide variety of video signals by applying optimum playback parameters according to the video signals to be played back. The reproduction parameter is reproduction setting information applied at the time of reproduction of a video signal including, for example, any one of image quality, sound quality, and volume, or an arbitrary combination.

[Patent Document 1] listed below discloses a television that corrects the volume and color adjustment values for each broadcasting station and external input at the time of channel selection or external input switching.

Also, in recent years when TVs have become more sophisticated, it has become possible to link various types of external devices with the TV. An example of the external device is a recorder that can receive a plurality of different video signals.

In such cooperation, it is conceivable to change the display settings to be applied for display for each video signal output by the external device. In such a case, the external device stores information (more specifically, parameters) related to display settings for each video signal, and when the external device switches the video signal output to the television, the external device A configuration is conceivable in which display setting information corresponding to the video signal after switching is read and the display setting information is notified to the television.

Further, as the television becomes thinner, the television system has a structure in which the television is separated into a display device that reproduces the video represented by the video signal and an output device that outputs the video signal displayed on the display device to the display device. Has been developed.

Here, the display device is, for example, a monitor, and the output device includes an STB (Set Top Box, set top box) or a tuner. The output device in the television system is a concept including the external device connected to the television.

Further, as the output device, there is an output device that can be further connected to an external device including a recorder, which is different from the output device.

Japanese Patent Publication “Japanese Patent Laid-Open No. 9-37174 (published on Feb. 7, 1997)”

There are the following problems with the conventional technique for selecting the optimum playback parameter according to the video signal and playing back the video signal.

(Problem 1 according to Patent Document 1)
First, the conventional television set disclosed in Patent Document 1 that corrects the sound volume and the color adjustment value for each broadcasting station and each external input does not assume a configuration in which the display device and the output device are separated.

In the technique of Patent Document 1, the CRT (Cathode Ray Tube, CRT), the speaker, the video demodulation circuit, the audio demodulation circuit, the audio amplification circuit, and the channel selection circuit are included in the same casing. The housing includes a control circuit for correcting the volume and color adjustment value for each broadcasting station and external input.

Therefore, it is not assumed that the communication connection from the control circuit to the video demodulation circuit, the audio demodulation circuit, and the audio amplification circuit is disconnected.

However, as described above, as a current television, not only a display device and an output device are integrated, but also in a television that is required to have both high functionality and thinness, a display device and an output device are It is necessary to assume a configuration for separating the two.

Particularly, considering the improvement of the usability of a television, a television system configured to wirelessly connect a display device and an output device is one of the important options.

When the control of the display setting control unit that controls the display setting and the display unit whose display setting is controlled by the display setting control unit is through a wireless connection, the display setting is changed when the connection is disconnected. How to control is particularly important.

Therefore, the technique of Patent Document 1 is not applicable to a television system having a configuration in which a display device and an output device are separated.

(Problem 2 according to Patent Document 1)
Secondly, the technique of Patent Document 1 cannot change the reproduction parameter to be applied in a situation where neither channel selection change nor external input switching is performed.

However, for a television that receives a plurality of different video signals, the television may be required to change only the parameters that should be applied for display in a situation where channel selection and external input switching are not performed.

For example, a program broadcast from the same broadcasting station may be a so-called standard broadcast program or a high-definition broadcast program depending on time. Naturally, the television is required to apply different playback parameters for standard broadcasting and high-definition broadcasting.

Furthermore, in a television that is linked to various types of external devices, including a recorder that supports a plurality of video input switching, the channel selection change and external input switching are not performed on the television. Tuning may be changed.

Also in this case, it is fully conceivable that the television is required to change the playback parameters to be applied according to the channel selection change.

However, since the technique of Patent Document 1 assumes channel selection or external input switching as a trigger for correcting the volume and color adjustment value, under the situation where neither channel selection change nor external input switching is performed, It is not possible to change only the playback parameters to be applied.

(Problem of technology that external device outputs playback parameters to TV)
Furthermore, an external device that includes a parameter table and notifies the television of playback parameters has the following problems.

That is, there is a problem that the responsiveness from when the user performs the switching operation of the video signal of the external device to when the video is displayed on the television to which the playback parameter is applied is poor.

The cause is that the playback parameters output by the external device include image quality, sound quality, volume, or any combination, and a large amount of data. For this reason, a delay occurs in the communication between the external device and the television, resulting in poor responsiveness.

For example, when the communication speed between the external device and the television is limited, such as when the external device and the television are connected wirelessly, the problem of the responsiveness is particularly serious.

In addition, when the connection between the external device and the television is interrupted, the television does not hold the playback parameters to be applied to the display, and thus all parameters need to be reacquired at the time of reconnection. That is, every time reconnection occurs, a delay due to the output of the reproduction parameter as described above occurs.

This is a big problem especially in an environment where communication between an external device and a TV is repeatedly disconnected and reconnected, such as a wireless connection in a poor radio wave condition.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and its main object is to display a display device that inputs different types of video source signals and applies playback parameters corresponding to the video source signals with high responsiveness. To provide an apparatus. It is another object of the present invention to provide a display system including such a display device and an output device that can be used in such a display system.

In order to solve the above-described problem, an output device according to the present invention provides:
(1) an output unit that outputs various signals including a video signal to a display device;
(2) a storage unit storing basic information for generating source identification information for identifying at least the supply source of the video signal to be output to the display device and the type of the video signal;
(3) The basic information is read from the storage unit, the source identification information is generated, and the generation unit supplies the output unit;
It is characterized by having.

A display device according to the present invention is a display device that receives a video signal output from an output device and reproduces a video represented by the video signal,
(1) An acquisition unit that acquires source identification information for identifying at least a video signal supply source and a video signal type from the output device;
(2) For displaying the video signal, a storage unit storing a correspondence relationship between a parameter applied to the video signal and the source identification information;
(3) a control unit that reads a parameter corresponding to the source identification information acquired by the acquisition unit from the storage unit and sets the parameter as a reproduction parameter applied to the correction of the video signal;
It is characterized by having.

According to one aspect of the present invention, the response until the video signal is reproduced by applying the reproduction parameter is improved, and the usability is improved.

It is a block diagram which shows the outline | summary of the display system which concerns on one Embodiment of this invention. It is a sequence diagram which shows the outline | summary of the process of an output device and a display apparatus before and after the display apparatus of FIG. 1 detects source ID for the first time. FIG. 3 is a sequence diagram illustrating an outline of processing of the output device and the display device before and after the display device detects a change to another video signal following the state of FIG. 2. FIG. 4 is a sequence diagram showing an outline of processing of the output device and the display device before and after the display device detects a change to a video signal corresponding to a registered source ID following the state of FIG. 3. FIG. 5 is a sequence diagram illustrating an outline of processing of the output device and the display device before and after the display device detects a change in the output device following the state of FIG. 4. Outline of processing of the output device and the display device before and after the display device detects the change to the video signal corresponding to the source ID not registered in the parameter table in a state where there is no free space in the parameter table. FIG. It is a figure which shows an example of the parameter table in the display system which concerns on this invention. It is a figure which shows an example of the output device provided only with a tuner function based on one Embodiment of this invention. It is a figure which shows an example of the output device provided only with a player function based on one Embodiment of this invention. It is a figure which shows an example of the video apparatus provided only with the video reproduction function based on one Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Hardware configuration example)
FIG. 1 is a block diagram showing an overview of a display system according to an embodiment of the present invention. The display system 1 according to the present invention broadly includes a display device 200 that reproduces a video signal and an output device 100 that outputs the video signal to the display device.

In the present embodiment, communication between the output device 100 and the display device 200 is performed wirelessly, but it is also possible to communicate by wire.

(Example of hardware configuration of output device)
The output device 100 includes an antenna 110 and a channel selection unit 120, and supports reception of multi-channel television broadcasts.

The output device 100 has external video inputs 130 and 140 (video signal acquisition unit) and is connected to one or more output devices (not shown) other than the output device 100 including HDMI (registered trademark) compatible devices. obtain. Note that other output devices connected to the output device 100 are hereinafter referred to as external devices in order to make the distinction from the output device 100 clear.

Furthermore, the output device 100 includes a storage unit 180 and has a source ID table 181 in the storage unit 180. The source ID table 181 stores a source ID (source identification information) for uniquely identifying a video signal received for each channel of the television broadcast or a video signal received from an external device.

The output device 100 includes a communication unit 190 (output unit) that communicates with the display device 200.

(Source ID)
The source ID is an ID obtained by combining a video signal ID for identifying the type of each video signal and the following device ID.

The device ID is an ID for identifying an acquisition source device or a transit device of the video signal that is finally received by the display device 200. Accordingly, the output device 100 and the external device connected to the output device 100 are assigned different device IDs. When there are a plurality of external devices, a different device ID is assigned to each external device.

Note that it is possible to distinguish which channel (frequency band) broadcast, for example, which channel of terrestrial digital broadcast, or which channel of BS broadcast is broadcast, based on the video signal ID. Furthermore, the video signal ID can be used to identify the format of the video signal, for example, whether it is a standard broadcast or a high-definition broadcast.

Therefore, the same high-definition broadcast recorded on a plurality of different recorders can be identified by the device ID, and the standard broadcast and the high-definition broadcast recorded on the same recorder can be identified by the video signal ID. Of course, each of the multiple channels received by the output device 100 via the antenna 110 can also be identified by the video signal ID.

(Outline of output device operation)
The output device 100 receives the video switching signal transmitted from the remote controller 150 by the remote control signal receiving unit 160 and outputs it to the switching control unit 170 (generation unit). As a result, the switching control unit 170 executes video signal switching processing.

During the switching process of the video signal, the switching control unit 170 reads the source ID corresponding to the switched video signal from the source ID table 181 and outputs the source ID to the display device 200 via the communication unit 190. To do.

After outputting the source ID to the display device 200, the output device 100 outputs the video signal to the display device 200 via the communication unit 190. The video signal is a video signal before being corrected by a reproduction parameter for each video signal described later.

(Example of hardware configuration of display device)
The display device 200 includes an antenna 201 and a channel selection unit 202, and supports reception of multi-channel television broadcasts.

The display device 200 includes a communication unit 203 (video signal acquisition unit) and a communication unit 204 (video signal acquisition unit), and can be connected to a plurality of output devices.

The display device 200 includes a switching control unit 207 that executes switching control of a video signal received from the output device via the

communication unit

203 or 204.

Further, the display device 200 receives the video switching signal transmitted from the remote controller 205 by the remote control signal receiving unit 206 and outputs it to the switching control unit 207. As a result, the switching control unit 207 switches the video signal.

The display device 200 includes a storage unit 216 having a parameter table 217. The parameter table 217 holds playback parameters to be applied to video signal correction for each source ID.

In addition, the display device 200 includes a source ID detection unit 208, a video signal processing unit 209, a control unit 210, a video correction unit 211, and an audio correction unit 212, as will be described later.

(Overview of display device operation)
The communication unit 203 receives the source ID output by the output device 100 and sends the source ID to the switching control unit 207.

The switching control unit 207 sends the source ID to the source ID detection unit 208, and the source ID detection unit 208 detects the source ID and sends it to the control unit 210.

The control unit 210 reads the playback parameter corresponding to the source ID from the parameter table 217 and notifies the video correction unit 211 and the audio correction unit 212 of the parameters.

The parameter table 217 stores the source ID for each video signal acquired via the antenna 201 in addition to the source ID of each output device communicating with the display device 200 via the communication unit 203 and the communication unit 204. Has been.

Of course, the device ID of the video signal acquired through the antenna 201 and the channel selection unit 202 is the same, and only the video signal ID is different.

Also for the video signal acquired via the antenna 201, the control unit 210 reads the playback parameter corresponding to the source ID of the video signal from the parameter table 281 and sets it in the video correction unit 211 and the audio correction unit 212.

The video signal acquired via the antenna 201, the video signal acquired via the communication unit 203, and the video signal acquired via the communication unit 204 are all once transmitted via the switching control unit 207. The data is sent to the processing unit 209.

The video signal processing unit 209 separates the video signal into image data and audio data, and sends the image data to the video correction unit 211 and the audio data to the audio correction unit 212.

The video correction unit 211 performs correction based on the reproduction parameter notified from the control unit 210 on the image data, and then displays the correction on the display 214.

The sound correction unit 212 corrects the sound data based on the reproduction parameter notified from the control unit 210, and then outputs the sound data through the speaker 215.

Further, when the remote control signal receiving unit 206 receives a signal related to the change of the reproduction parameter from the remote control 205 during the video signal display, the remote control signal receiving unit 206 sends the signal to the control unit 210.

The control unit 210 applies the reproduction parameter requested to be changed to at least one of the video correction unit 211 and the audio correction unit 212 and is stored in the parameter table 217 in the storage unit 216 and is currently in use. Rewrite the parameters corresponding to the video signal.

(Overview of how to set the source ID and playback parameters)
(Operation of output device)
As described above, the output device 100 has the source ID table 181, and the source ID including the device ID and the video signal ID is stored in the source ID table 181 in advance.

The device ID is an ID for identifying each external device and the output device 100 itself, and the video signal ID is a plurality of output devices corresponding to each device ID or a plurality of external devices. It is ID which identifies the kind of video signal of each.

Therefore, the output device 100 identifies a video signal received by the display device 200 from the output device 100 and an output device through which the video signal is output to the display device 200 or an external device. Holds ID.

That is, the display device 200 can uniquely identify the video signal and the output device and external device through which the video signal has passed through the source ID.

When the output device 100 detects a connection with the display device 200 via the communication unit 190 or detects a video signal switching request via the remote control signal receiving unit 160, the output device 100 selects the current selection from the source ID table 181. The source ID of the video signal being read is read.

After outputting the corresponding source ID to the display device 200, the output device 100 further outputs a video signal corresponding to the source ID to the display device 200.

(Operation of display device)
The display device 200 includes a parameter table 217, and each record of the parameter table 217 includes a source ID, a reproduction parameter, and a counter value as elements. The counter value will be described later in detail, and the source ID and the reproduction parameter will be described first.

The source ID detection unit 208 detects the source ID output by the output device 100 and sends the source ID to the control unit 10.

The control unit 210 compares the notified source ID with the source ID stored in the parameter table 217, and the source ID stored in the parameter table 217 is the same as the notified source ID. Check if the thing is registered.

If the notified source ID is not stored in the parameter table 217, the notified source ID is added to the parameter table 217, and a playback parameter default is set as a playback parameter corresponding to the notified source ID. Enter a value.

When the notified source ID is stored in the parameter table 217, the notified source ID is not added to the parameter table 217.

Also, when the remote control signal receiving unit 206 receives a signal from the remote control 205 related to the change of the playback parameter during the video signal display, the remote control signal receiving unit 206 sends the signal to the control unit 210.

In accordance with the reproduction parameter change information received from the remote control signal reception unit 206, the control unit 210 stores the reproduction parameter of the source ID corresponding to the currently displayed video signal stored in the parameter table 217 in the storage unit 216. rewrite.

The details of the parameter table new source ID addition processing and the playback parameter and counter value update processing corresponding to the registered source ID will be described later.

The control unit 210 reads the reproduction parameter corresponding to the source ID of the video signal to be reproduced or being reproduced from the parameter table 217, and notifies the video correction unit 211 and the audio correction unit 212 of the reproduction parameter.

(Outline of parameter table management method using counter values)
FIG. 7 is a diagram illustrating an example of the parameter table 217.

The parameter table 217 can store N records, and each record includes a source ID, a playback parameter corresponding to the source ID, and a counter value of the source ID.

As described above, the control unit 210 checks whether the source ID received from the output device 100 exists in the parameter table 217.

When the source ID is not stored in the parameter table 217, the control unit 210 first updates the counter value of the source ID stored in the parameter table -1 by -1.

When the source ID is not stored in the parameter table 217, the counter value of the source ID is regarded as “0” once, and the counter value having a value equal to or greater than “0”, that is, all counter values are decremented by −1. May be updated.

The source ID whose counter value is 0 is deleted, and its storage area becomes a free area.

Next, the control unit 210 adds the received source ID to the parameter table 217 with the counter value of the received source ID as N (the maximum value of the counter value).

When the received source ID is stored in the parameter table 217, the control unit 10 does not add the received source ID to the parameter table 217, but counters each source ID stored in the parameter table 217. Update the value. The counter value updating method is as follows.

The control unit 210 compares the current counter value X in the parameter table 217 of the received source ID with the counter values of other source IDs.

* For source IDs with a counter value greater than X, update the counter value by -1.

* For source IDs that have a counter value smaller than X, the counter value is not changed.

Also, the counter value of the received source ID is updated to N.

用いる By using the above parameter management method, it is difficult to initialize the parameter of the source ID with high use frequency, and it becomes the initialization target preferentially from the parameter of the source ID with low use frequency.

Furthermore, the system can be simplified because time information is not required to detect the source ID that has passed the most time since the last use.

Among the source IDs stored in the parameter table 217, the video signal corresponding to the source ID whose counter value is N is the video signal that the video device 200 should reproduce recently.

In addition to the automatic update described above, the parameter table 217 is managed by a manual update method in which the user himself selects a storage area to be overwritten while looking at the OSD (On Screen Display) displayed on the display. Alternatively, a fixed method for prohibiting overwriting of the storage area with respect to the source ID once stored, or an update method combining these methods may be used.

[Example 1]
(Initial registration of source ID)
FIG. 2 is a sequence diagram showing an outline of processing of the output device 100 and the display device 200 before and after the display device 200 of FIG. 1 first detects the source ID.

In the present embodiment, the display device 200 includes the storage unit 216, and the parameter table 217 included in the storage unit 216 can store six source IDs P1 to P6.

The display device 200 is connected to the output device 100 having three video signals via the communication unit 203 (video signal acquisition unit). Furthermore, the display device 200 is connected to another output device having four video signals via the communication unit 204 (video signal acquisition unit).

In the present embodiment, for simplicity of explanation, it is assumed that the output device 100 and the second output device are not connected to another output device, that is, an external device. However, it is naturally possible that the output device 100 and the second output device are each further connected to a plurality of external devices.

The output device 100 has a source ID table 181 in the storage unit 180. In the source ID table 181, the device ID of the output device 100 is A, and the video signal IDs of the video signals of the output device 100 are 1 to 3, respectively. Accordingly, the source ID table 181 stores at least three source IDs A1 to A3 as source IDs.

In this embodiment, it is assumed that the second output device has the same configuration as the output device 100 for the sake of simplicity.

Similarly, the device ID of the second output device is B, and the video signal IDs of the video signals of the second output device are 1 to 4, respectively. Accordingly, the source ID table held by the second output device stores at least four source IDs B1 to B4 as source IDs.

From the

remote controller

150 or 205, a signal indicating that the video signal to be reproduced on the display device 200 is to be a video signal having a video signal ID of 2 included in the output device 100 is transmitted.

When the remote control signal receiving unit 160 or the remote control signal receiving unit 206 detects the above signal, the output device 100 and the display device 200 operate as follows.

(Operation of output device 100)
In the output device 100, the remote control signal receiving unit 160 receives the video switching signal from the remote control 150, and notifies the switching control unit 170 (generation unit) of the video signal selected by the user.

The switching control unit 170 generates a source ID including the video signal ID of the video signal and the device ID of the video signal based on basic information stored in the source ID table 181 in advance. The source ID in this embodiment is A2 which is a combination of 2 which is the video signal ID and A which is its own device ID.

Thereafter, the switching control unit 170 outputs the source ID to the display device 200 via the communication unit 190 (output unit).

After the output of the source ID, the output device 100 outputs the video signal having the video signal ID 2 that the output device 100 has to the display device 200 via the communication unit 190.

(Operation of display device 200)
The display device 200 receives the source ID output from the output device 100 via the communication unit 203. The received source ID is detected by the source ID detection unit 208 (acquisition unit) via the switching control unit 207 and sent to the control unit 210.

The control unit 210 checks whether the source ID, that is, A2 is already stored in the parameter table 217.

Since A2 is not registered in the parameter table 217, the control unit 210 newly adds A2 to the parameter table 217 together with the reproduction parameter and the counter value.

Since A2 is a source ID newly added to the parameter table 217, the playback parameter corresponding to A2 is the default value of the playback parameter.

Further, as described above, since the maximum number of source IDs that can be stored in the parameter table 217 is 6, the above-described parameter table management method is applied, and the counter value corresponding to A2 is 6.

The control unit 210 reads from the parameter table 217 the reproduction parameter corresponding to A2, here, the default value of the reproduction parameter prepared for A2, and notifies the video correction unit 211 and the audio correction unit 212 of it.

On the other hand, the switching control unit 207 sends the video signal corresponding to A2 received via the communication unit 203 to the video signal processing unit 209.

(Initial registration of another source ID and counter value update of already registered source ID)
FIG. 3 is a sequence diagram showing an outline of processing of the output device 100 and the display device 200 before and after the display device 200 detects a change to another video signal following the state of FIG. .

From the

remote controller

150 or 205, the video signal to be reproduced on the display device 200 is changed from the video signal having the video signal ID 2 in the output device 100 to the video signal having the video signal ID 1 in the output device 100. A signal to the effect is sent.

(Operation of output device 100)
The switching control unit 170 that is notified of the video signal selected by the user from the remote control signal receiving unit 160 first sets the source ID including the video signal ID of the video signal and the device ID of the video signal to the source ID table 181. Is generated based on the basic information stored in advance. Here, the source ID is A1 which is a combination of 1 which is a video signal ID and A which is its own device ID.

Thereafter, the switching control unit 170 outputs the source ID to the display device 200 via the communication unit 190.

After the output of the source ID, the output device 100 outputs the video signal having the video signal ID “1” included in the output device 100 to the display device 200 via the communication unit 190.

(Operation of display device 200)
The display device 200 receives the source ID output from the output device 100 via the communication unit 203. The received source ID is detected by the source ID detection unit 208 via the switching control unit 207 and sent to the control unit 210.

The control unit 210 checks whether the source ID, that is, A1 is already stored in the parameter table 217.

Since A1 is not registered in the parameter table 217, the control unit 210 newly adds A1 to the parameter table 217 together with the reproduction parameter and the counter value.

Prior to the addition of A1 to the parameter table 217, the control unit 210 applies the above-described parameter table management method, and for the record already registered in the parameter table 217, the source ID is A2, Update from “6” to “5” minus 1.

Also, since A1 is a source ID newly added to the parameter table 217, the playback parameter corresponding to A1 is the default value of the playback parameter.

In addition, since the maximum number of source IDs that can be stored in the parameter table 217 is 6 as described above, the above-described parameter table management method is applied, and the counter value corresponding to A1 is 6.

The control unit 210 reads the playback parameter corresponding to A1, from the parameter table 217, here the default value of the playback parameter prepared for A1, and notifies the video correction unit 211 and the audio correction unit 212 of it.

On the other hand, the switching control unit 207 sends the video signal corresponding to A1 obtained via the communication unit 203 to the video signal processing unit 209.

The video correction unit 211 performs correction based on the reproduction parameter notified from the control unit 210 on the image data, and then displays it on the display 214.

(Display of video signal corresponding to registered source ID)
FIG. 4 shows an outline of processing of the output device 100 and the display device 200 before and after the display device 200 detects a change to the video signal corresponding to the registered source ID, following the state of FIG. FIG.

From the

remote controller

150 or 205, the video signal to be reproduced on the display device 200 is changed from the video signal having the video signal ID 1 in the output device 100 to the video signal having the video signal ID 2 in the same output device 100. A signal to the effect is sent.

(Operation of output device 100)
In the output device 100, as described above, the switching control unit 170 generates A2 which is the source ID of the video signal selected by the user based on the basic information stored in the source ID table 181 in advance, and the source The ID is output to the display device 200 via the communication unit 190.

After outputting the source ID, the output device 100 outputs a video signal corresponding to A2.

(Operation of display device 200)
Similarly to the above, in the control unit 210, the control unit 210 checks whether or not A2 detected by the source ID detection unit 208 is already stored in the parameter table 217.

The control unit 210 applies the above-described parameter table management method, confirms that A2 is already registered in the parameter table 217, and then updates the counter value of A1 from “6” to “5”. , A2 is updated to “6”.

The control unit 210 reads the reproduction parameter corresponding to A2, and notifies the video correction unit 211 and the audio correction unit 212 of the parameters.

The video signal processing unit 209 separates the video signal corresponding to A2 into image data and audio data, and sends the image data to the video correction unit 211 and the audio data to the audio correction unit 212.

(Operation when the second output device is selected)
FIG. 5 shows the second output when the output device that is the output source of the video signal acquired by the display device 200 is changed from the output device 100 to the second output device following the state of FIG. FIG. 10 is a sequence diagram illustrating an outline of processing of the device and the display device 200.

From the remote control 205 or from the remote controller for the second output device, the video signal to be reproduced on the display device 200 is included in the output device 100, from the video signal whose video signal ID is 2, and the second output device has. A signal to be changed is transmitted to a video signal whose video signal ID is 1.

When the remote control signal receiving unit 360 or the remote control signal receiving unit of the second output device detects the above signal, the second output device and the display device 200 operate as follows.

(Operation of the second output device)
In the second output device, the switching control unit (generation unit) of the second output device notified of the video signal selected by the user from the remote control signal receiving unit includes the video signal ID and the device ID of the video signal. A source ID is generated based on basic information stored in advance in a source ID table in the storage unit of the second output device. Here, the source ID is B1 obtained by combining 1 which is the video signal ID and B which is the device ID of itself.

Thereafter, the switching control unit outputs the source ID to the display device 200 via the communication unit (output unit) of the second output device.

After the output of the source ID, the second output device outputs the video signal having the video signal ID of 1 included in the second output device to the display device 200 via the communication unit of the second output device. To do.

(Operation of display device 200)
The display device 200 receives the source ID output from the second output device via the communication unit 204. The received source ID is detected by the source ID detection unit 208 (acquisition unit) via the switching control unit 207 and sent to the control unit 210.

The control unit 210 checks whether or not the source ID, that is, B1 is already stored in the parameter table 217 in the storage unit 216.

Since B1 is not registered in the parameter table 217, the control unit 210 newly adds B1 to the parameter table 217 together with the reproduction parameter and the counter value.

Prior to the addition of B1 to the parameter table 217, the control unit 210 applies the above-described parameter table management method, and for the record already registered in the parameter table 217 and whose source ID is A2, the counter value is set. Update from “6” to “5” minus 1. For the record with the source ID A1, the counter value is updated from “5” to “4”.

Also, since B1 is a source ID newly added to the parameter table 217, the playback parameter corresponding to B1 is the default value of the playback parameter.

Since the maximum number of source IDs that can be stored in the parameter table 217 is 6 as described above, the counter value corresponding to B1 is 6 by applying the parameter table management method described above.

The control unit 210 reads the playback parameter corresponding to B1, from the parameter table 217, here, the default value of the playback parameter prepared for B1, and notifies the video correction unit 211 and the audio correction unit 212 of it.

On the other hand, the switching control unit 207 sends the video signal corresponding to B1 received via the communication unit 204 to the video signal processing unit 209.

(Processing when there is no free space in the parameter table)
FIG. 6 shows an outline of processing of the second output device and the display device 200 when a video signal corresponding to a source ID not registered in the parameter table is selected by the user in a state where there is no free space in the parameter table. FIG.

The source ID corresponding to the video signals 1 to 3 of the output device 100 and the source ID corresponding to the video signals 1 to 3 of the second output device are stored in the parameter table 217 and store up to six records. The parameter table 217 that can be used has no free space.

In the above state, a signal indicating that the video signal to be reproduced on the display device 200 should be changed from the video signal corresponding to B1 to the video signal having the video signal ID 4 of the second output device is transmitted. Suppose.

When the remote control signal receiving unit of the second output device or the remote control signal receiving unit 206 detects the above signal, the second output device and the display device 200 operate as follows.

(Operation of the second output device)
In the second output device, as described above, the switching control unit of the second output device selects the video selected by the user based on the basic information stored in advance in the source ID table of the second output device. B4 which is the source ID of the signal is generated.

The second output device outputs the video signal corresponding to B4 after outputting the source ID to the display device 200 via the communication unit of the second output device.

(Operation of display device 200)
The display device 200 receives the source ID output from the second output device via the communication unit 204. The received source ID is detected by the source ID detection unit 208 via the switching control unit 207 and sent to the control unit 210.

The control unit 210 checks whether or not B4 is already stored in the parameter table 217.

Since B4 is not registered in the parameter table 217, the control unit 210 newly adds B4 to the parameter table 217 together with the reproduction parameter and the counter value.

Prior to the addition of B4 to the parameter table 217, the control unit 210 applies the parameter table management method described above, and sets the counter value of each source ID for each source ID already registered in the parameter table 217. -1 to update.

Also, the control unit 210 deletes the line of the source ID whose counter value is 0. Here, the counter value of B2 becomes 0, and the row of B2 is deleted.

B4 is added to the free space of the parameter table 217 created by deleting B2.

Since B4 is a newly added source ID, the playback parameter corresponding to B4 is the default value of the playback parameter.

In addition, since the maximum number of source IDs that can be stored in the parameter table 217 is 6 as described above, the counter value corresponding to B4 is 6 by applying the above-described parameter table management method.

The control unit 210 reads the playback parameter corresponding to B4 from the parameter table 217, here, the default value of the playback parameter prepared for B4, and notifies the video correction unit 211 and the audio correction unit 212 of it.

Meanwhile, the switching control unit 207 sends the video signal corresponding to B4 received via the communication unit 204 to the video signal processing unit 209.

When outputting the video signal, the output device 100 needs to output the playback parameter itself for each video signal having a large amount of data in order to notify the display device 200 of the playback parameter to be applied for each video signal. No.

On the other hand, the display device 200 does not need to receive the playback parameters for each video signal having a large amount of data. The display device 200 can determine the playback parameter to be applied to the correction of the video signal corresponding to the source ID only by receiving the source ID whose data amount is sufficiently smaller than the playback parameter.

Accordingly, the responsiveness from when the switching operation of the video signal output by the output device 100 is performed to when the display device reproduces the video signal by applying the reproduction parameter to be applied to the correction of the video signal is improved. , Usability is improved.

[Example 2]
(Returning method at disconnection and reconnection of communication between output device and display device)
The communication unit 190 (output unit) of the output device 100 and the communication unit 203 of the display device 200 are wirelessly connected.

When the radio wave conditions between the communication unit 190 and the communication unit 203 are poor and the communication between the two repeats connection and disconnection, the output device 100 and the display device 200 operate as follows.

(Operation of output device 100)
The communication unit 190 detects disconnection and connection of communication with the display device 200, and notifies the switching control unit 170 (generation unit) of the detection result.

When the communication unit 190 is notified of reconnection with the display device 200, the switching control unit 170 acquires the source ID corresponding to the currently selected video signal from the source ID table 181, and passes the communication unit 190. Output to the display device 200. The source ID table 181 is stored in the storage unit 180.

(Operation of display device 200)
The communication unit 203 can detect disconnection and connection of communication with the output device 100 and can receive a source ID and a video signal transmitted by the output device 100.

The communication unit 203 sends the source ID received after reconnection with the output device 100 to the source ID detection unit 208 (acquisition unit) via the switching control unit 207. The source ID detection unit 208 detects the source ID and notifies the control unit 210.

The control unit 210 reads the playback parameter corresponding to the source ID from the parameter table 217 in the storage unit 216 and notifies the video correction unit 211 and the audio correction unit 212 of the parameters.

When the communication unit 203 detects reconnection with the output device 100, only the information indicating that reconnection is performed, not the source ID, via the switching control unit 207 and the source ID detection unit 208. 210 may be notified.

The control unit 210 notified of the reconnection result information reads the reproduction parameter corresponding to the source ID whose counter value is N (6 in the first embodiment) from the parameter table 217, and the video correction unit 211 and the audio correction unit 212 is notified.

On the other hand, the switching control unit 207 sends the video signal received via the communication unit 203 to the video signal processing unit 209.

At the time of reconnection, the output device 100 only needs to output either the source ID or the reconnection information to the display device 200, and there is no need to output a reproduction parameter itself having a large amount of data.

On the other hand, the display device 200 can also determine a playback parameter to be reapplied based only on either the source ID or the reconnection information.

Therefore, by using the playback parameter re-application method described above at the time of reconnection, the output device re-outputs all the playback parameters, and the display device receives the playback parameters again and re-applies them. The speed of re-applying parameters can be increased.

This is particularly important when the radio wave conditions between the communication unit 190 and the communication unit 203 are poor.

Example 3
A modification of the output device 100 will be described below. FIG. 8 is a diagram illustrating an example of an output device having only a tuner function according to an embodiment of the present invention.

(Example of hardware configuration of output device)
The output device 400 includes an antenna 410 and a channel selection unit 420 (generation unit), and supports reception of multi-channel television broadcasts.

Further, the output device 400 has a source ID table 481 in the storage unit 480, and a source ID for uniquely identifying the television channel is stored in the source ID table 481 in advance.

The source ID is an ID obtained by combining a video signal ID for identifying each video signal and the following device ID.

The device ID is an ID for causing the display device that receives the video signal output from the output device 400, for example, the display device 200 to identify the output device 400. That is, the display device 200 that has received the source ID output by the output device 400 can identify that the video signal has been received from the output device 400 by the device ID included in the source ID.

The display device 200 can distinguish, for example, digital terrestrial broadcasting and BS broadcasting based on the video signal ID included in the source ID, and which channel is broadcast, which is standard broadcast, or high-definition broadcast? Can be identified.

The output device 400 receives the video switching signal transmitted from the remote controller 450 by the remote control signal receiving unit 460 and notifies the channel selecting unit 420 of the video switching signal.

The channel selection unit 420 receives the corresponding video signal based on the notified video switching signal and reads the video signal ID corresponding to the video signal from the source ID table. First, the source ID is transmitted to the communication unit 490 (output). Output to the display device 200 via

After selecting the source ID, the channel selection unit 420 outputs the video signal to the display device 200 via the communication unit 490.

Of course, the video signal is a video signal before being corrected by the reproduction parameter for each video signal.

Example 4
FIG. 9 is a diagram illustrating an example of an output device having only a player function according to an embodiment of the present invention.

(Example of hardware configuration of output device)
The output device 500 includes a reproduction unit 521 (generation unit), and the reproduction unit 521 can read a video signal from a medium on which the video signal is recorded.

Further, the output device 500 has a source ID table 581 in the storage unit 580, and stores in advance in the source ID table 581 a source ID for uniquely identifying the video signal read by the playback unit 521. ing.

As described above, the source ID is an ID obtained by combining the video signal ID for identifying each video signal and the following device ID.

The device ID is an ID for causing the display device that receives the video signal output from the output device 500, for example, the display device 200 to identify the output device 500. That is, the display device 200 that has received the source ID output by the output device 500 can identify that the video signal has been received from the output device 500 by the device ID included in the source ID.

The video signal ID is different for each type of video signal stored in the medium played back by the playback unit 521.

That is, the video signal ID differs at least depending on whether the medium is a terrestrial digital broadcast program recording medium or a BS broadcast recording medium. Further, it differs depending on which channel the broadcast is recorded on, and also depends on whether the medium is a standard broadcast program or a high-definition broadcast program.

The output device 500 receives the playback control signal transmitted from the remote controller 550 by the remote control signal receiving unit 560, and the remote control signal receiving unit 560 notifies the playback unit 521 of the playback control signal.

Here, the reproduction control signal is a signal for instructing control related to reproduction of the video signal recorded on the medium, including reproduction, stop, fast forward, and rewind.

The playback unit 521 executes reading of the video signal based on the playback control signal, and outputs the video signal subjected to control based on the playback control signal to the display device 200 via the communication unit 590 (output unit). The “video signal on which control based on the playback control signal is executed” refers to a video signal on which normal playback, stop, fast forward, or rewind is executed, for example.

Before the video signal is output, the playback unit 521 reads the corresponding source ID from the source ID table 581 and outputs the source ID to the display device 200 via the communication unit 590.

After outputting the source ID, the output device 500 outputs the video signal to the display device 200 via the communication unit 190. Of course, the video signal is a video signal before being corrected by a reproduction parameter for each video signal.

Example 5
Next, modifications of the display device 200 will be described below. FIG. 10 is a diagram illustrating an example of a video apparatus having only a video playback function according to an embodiment of the present invention.

(Example of hardware configuration of display device)
The display device 600 includes a communication unit 603 (video signal acquisition unit), and can receive source ID information and a video signal output from the output device.

Further, the display device 600 can receive the video switching signal transmitted from the remote controller 605 by the remote control signal receiving unit 606.

The display device 600 has a parameter table 617 in the storage unit 616, and holds a reproduction parameter to be applied for each source ID.

Upon receiving the source ID, the communication unit 603 sends the source ID to the source ID detection unit 608 (acquisition unit).

The source ID detection unit 608 detects the source ID and sends the detected source ID to the control unit 610.

The control unit 610 reads a reproduction parameter corresponding to the source ID from the parameter table 617 and notifies the video correction unit 611 and the audio correction unit 612 of the reproduction parameters.

When the communication unit 603 receives the video signal output from the output device, the video signal is sent to the video signal processing unit 609 via the source ID detection unit 608.

The video signal processing unit 609 separates the video signal into image data and audio data, and sends the image data to the video correction unit 611 and the audio data to the audio correction unit 612.

The video correction unit 611 performs correction based on the reproduction parameter notified from the control unit 610 on the image data, and then displays it on the display 614.

The sound correction unit 612 performs correction based on the reproduction parameter notified from the control unit 610 on the sound data, and then outputs the sound data through the speaker 615.

Further, when the remote control signal receiving unit 606 receives a signal related to the change of the reproduction parameter from the remote control 605 during the video signal display, the remote control signal receiving unit 606 sends the signal to the control unit 610.

The control unit 210 applies the playback parameter requested to be changed to one or both of the video correction unit 611 and the audio correction unit 612, and is stored in the parameter table 617 and is currently used. Rewrite parameters corresponding to the signal.

Note that the counter value stored in the parameter table 617 can be used to identify the video signal currently in use. This is because, according to the parameter table management method described above, the source ID with the largest counter value is from the source ID corresponding to the video signal currently in use.

Note that the video signal is not limited to a video signal supplied from a broadcasting source such as terrestrial digital broadcasting, CS broadcasting, or BS broadcasting. For example, it is supplied from a communication source such as IPTV or VOD, a medium source such as a hard disk drive or an optical disk drive, or an application source such as a web browser or a USB application (an application that reproduces content stored in a USB memory). The video signal is also an example of the video signal.

The video signal is not limited to a video signal representing a moving image, and may be a video signal representing a still image.

Further, the video signal may be a video signal representing a UI (user interface) like a video signal supplied from an application source.

[Modification]
Note that the output device according to the present invention may include a display unit, a playback function that receives a video signal received from the outside of the device itself, and displays a video represented by the video signal on the display unit. For example, a portable information terminal such as a smartphone that receives a video signal and displays a video represented by the video signal on the display unit is also included in the scope of the output device according to the present invention.

Also, a television as a display device that receives the video signal output from the portable information terminal and reproduces the video represented by the video signal is also included in the scope of the display device according to the present invention.

Furthermore, a display system including the portable information terminal and the television is also included in the scope of the display system according to the present invention.

[Summary]
The output device according to the present invention is:
(1) an output unit for outputting various signals including a video signal to a display device;
(2) a storage unit storing basic information for generating source identification information for identifying at least the supply source of the video signal output to the display device and the type of the video signal;
(3) Read out the basic information from the storage unit, generate the source identification information, and supply the output unit to the output unit,
It is characterized by having.

According to the configuration, the output device outputs a signal indicating the source identification information as one of the various signals to the display device via the output unit. As a result, the display device can identify at least the supply source of the video signal and the type of the video signal based on the source identification information notified from the output device. Therefore, the display device can use the source identification information for determining the reproduction parameter to be applied to the video signal to be reproduced.

That is, the display device can obtain the same operation result as the method of receiving the reproduction parameter from the output device, using simpler source identification information than the reproduction parameter information.

Thereby, the amount of data output to the display device is sufficiently smaller than when the output device outputs the playback parameters themselves to the display device.

Therefore, communication delay between the output device and the display device is improved or eliminated.

That is, after the output device and the display device establish a wired or wireless communication, there is responsiveness until the display device applies the playback parameter to the video signal received from the output device and reproduces the video signal. Improves usability.

In the output device according to the present invention, the basic information includes device identification information for identifying the output device and another output device, and video signal identification information for identifying the type of the video signal. Preferably it is.

According to the configuration, the device identification information distinguishes video signals having the same video signal type but different video signal supply sources, and the video signal identification information has the same video signal supply source but the video signal supply source. Differentiate video signals of different types.

Therefore, the display device that has received the source identification information can identify the supply source by the device identification information and the type of the signal by the video signal identification information for the video signal corresponding to the source identification information. .

In the output device according to the present invention, the generation unit specifies the supply source and the type of the video signal, and the device identification information and the video signal corresponding to the specified supply source and the type of the video signal are stored from the storage unit. It is preferable to read the identification information and generate the source identification information.

According to the configuration, the supply source may be only one of the output devices themselves, but the output device may acquire a video signal from another output device. Another output device is the source. Accordingly, a plurality of supply sources can be assumed.

Further, regarding the types of video signals, the present invention includes a mode in which the output device outputs only one type of video signal, but naturally includes a mode in which the output device inputs and outputs a plurality of types of video signals. Yes.

Therefore, the source identification information generated including the device identification information and the video signal identification information can take a plurality of patterns.

Therefore, in the storage unit, device identification information for identifying one or more output devices and video for identifying one or more types of video signals so as to correspond to a plurality of patterns of source identification information. At least signal identification information is stored. Accordingly, the generation unit selectively reads out the device identification information and the video signal identification information corresponding to the supply source and the type of the video signal identified by analyzing the video signal from the storage unit. Identification information can be easily generated.

An output device according to the present invention, when the video signal is a first video signal, a video signal acquisition unit that acquires a second video signal output from an output device different from the output device, and the first video signal It is preferable to further include a switching control unit that switches between the video signal and the second video signal and supplies the second video signal to the output unit.

According to the above configuration, the output device can switch and output a video signal acquired using another output device as a supply source and a video signal serving as the supply source together with the source identification information.

Of course, the first video signal and the second video signal may be the same type of video signal or different types of video signals.

The video signal identification information preferably includes information for identifying at least one of a channel set corresponding to the frequency band of the video signal and the format of the video signal.

According to the above configuration, the source identification information includes information for identifying at least one of the channel and format of the video signal in addition to the information for identifying the supply source of the video signal.

Here, the format of the video signal is, for example, information that defines specifications such as the resolution, frame rate, aspect ratio, or compression method of the video signal. In the video signal for high-definition broadcasting and the video signal for standard broadcasting, The format is different.

Accordingly, when the video signal identification information includes information for identifying a channel, for example, the display device identifies which channel of the terrestrial broadcast or satellite broadcast the video signal is. Can do. Further, when the video signal identification information includes information for identifying the format of the video signal, for example, the display device displays whether the video signal is a high-definition broadcast video signal or a standard broadcast video signal. Can be identified.

Furthermore, when the video signal identification information includes information for identifying a channel and a format, the display device can identify which of a plurality of combinations of the channel and the format is used.

The video signal identification information is detected before the disconnection when the output unit detects connection and disconnection of communication between the output device and the display device, and detects reconnection after communication with the display device is disconnected. It is preferable that the source identification information notified to the display device is read from the storage unit and notified again to the display device.

According to the configuration, at the time of reconnection, the output device does not need to re-output the reproduction parameter itself, and the source identification information whose amount of data is sufficiently smaller than the reproduction parameter may be re-output to the display device. .

Therefore, the time required for resetting the playback parameters required by the display device at the time of reconnection is shortened, and usability is improved.

As for the video signal identification information, it is preferable that the output unit wirelessly outputs the video signal to the display device and notifies the source identification information.

As described above, in the method in which the transmission device outputs the reproduction parameter itself to the display device in order to notify the reproduction parameter to be applied to the video signal, the amount of the reproduction parameter data is large. Thus, a communication delay between the output device and the display device may occur.

When communication between the output device that outputs the video signal to the display device and the display device that reproduces the video signal is performed wirelessly, connection and disconnection are performed between the output device and the display device. It is assumed that it repeats frequently.

Therefore, when connection and disconnection are frequently repeated between the output device and the display device, in the method in which the transmission device outputs the playback parameters themselves to the display device, the communication delay occurs every time reconnection is made. The usability is very low.

According to the above configuration, even when reconnection is performed, the output device outputs the same operation result as the method of outputting the reproduction parameter itself by outputting source identification information having a sufficiently small data amount compared to the reproduction parameter itself. Obtainable.

That is, it is possible to avoid a situation in which a delay for notification of a reproduction parameter occurs every time a reconnection is made, and usability is improved.

According to the above configuration, the display device that has received the source identification information can reproduce the video represented by the video signal by applying the corresponding reproduction parameter at least for each supply source and type.

The display device can determine the playback parameter to be applied to the video signal by receiving the source identification information whose data amount is sufficiently smaller than the playback parameter.

Therefore, the communication delay between the output device and the display device is improved or eliminated as compared with the case where the reproduction parameter itself is received.

That is, after the output device and the display device establish wired or wireless communication, the display device applies the reproduction parameters to be applied to the video signal received from the output device until the video signal is reproduced. Responsiveness is improved and usability is improved.

When the video signal is the first video signal, the display device according to the present invention acquires a second video signal output from an output device different from the output device, and the first video signal acquisition unit. It is preferable to further include a switching control unit that switches between the video signal and the second video signal and supplies the second video signal to the acquisition unit.

According to the above configuration, the display device switches video signals acquired from a plurality of supply sources, specifies and applies playback parameters to be applied at least for each type of the supply source and the video signal, and reproduces them. be able to.

The display device according to the present invention further includes a communication unit that communicates with the output device, and the control unit detects a communication state with the output device via the communication unit and communicates with the output device. When it is detected that is disconnected and reconnected, it is preferable that the parameter applied to the video signal is read from the storage unit immediately before the communication is disconnected.

According to the above configuration, at the time of reconnection, the display device can reset the playback parameters without receiving the source identification information from the output device.

Therefore, at the time of reconnection, playback parameters are quickly reset, improving usability.

In the display device according to the present invention, the control unit uses a counter to subtract from the maximum number N of the source identification information that can be stored in the storage unit, and the correspondence relationship between the source identification information and the parameter And the control unit sets the counter value of the newly notified source identification information to N and sets the source identification information other than the newly notified source identification information to less than N. By doing so, it is preferable that at least the newly notified source identification information is specified by N from among the plurality of source identification information stored in the storage unit.

According to the above configuration, the display device can easily determine the playback parameter to be reset only by the counter value at the time of reconnection, and usability is further improved.

The display system according to the present invention includes the output device and the display device.

According to the configuration, the responsiveness from the time when the video signal of the output device is switched to the time when the display device reproduces the video signal by applying a playback parameter to be applied to the video signal, A display system with high usability can be provided.

Note that each unit included in any one of the output devices, or a program for operating a computer as each unit included in any one of the display devices, and a computer-readable recording medium storing the program are also provided. Are included in the scope of the present invention.

Finally, each block of the output device 100 and the display device 200, in particular, the switching control unit 170 and the control unit 210 may be configured by hardware logic, or may be realized by software using a CPU as follows. Good.

That is, the output device 100 and the display device 200 include a CPU that executes instructions of a control program that realizes each function, a ROM that stores the program, a RAM that expands the program, a memory that stores the program and various data, and the like. The storage unit 180 and the storage unit 216 configured, or a recording medium is provided.

The object of the present invention is to record the program code (execution format program, intermediate code program, source program) of the control program for the output device 100 and the display device 200, which is software that realizes the above-described functions, in a computer-readable manner. This can also be achieved by supplying the recording medium to the output device 100 and the display device 200, and reading and executing the program code recorded on the recording medium by the computer (or CPU or MPU).

Examples of the recording medium include tapes such as magnetic tapes and cassette tapes, magnetic disks such as floppy (registered trademark) disks / hard disks, and disks including optical disks such as CD-ROM / MO / MD / DVD / CD-R. Card system such as IC card, IC card (including memory card) / optical card, or semiconductor memory system such as mask ROM / EPROM / EEPROM (registered trademark) / flash ROM.

Further, the output device 100 and the display device 200 may be configured to be connectable to a communication network, and the program code may be supplied via the communication network. The communication network is not particularly limited. For example, the Internet, intranet, extranet, LAN, ISDN, VAN, CATV communication network, virtual private network, telephone line network, mobile communication network, satellite communication. A net or the like is available. Further, the transmission medium constituting the communication network is not particularly limited. For example, even in the case of wired such as IEEE 1394, USB, power line carrier, cable TV line, telephone line, ADSL line, etc., infrared rays such as IrDA and remote control, Bluetooth ( (Registered trademark), 802.11 wireless, HDR, mobile phone network, satellite line, terrestrial digital network, and the like can also be used.

The present invention has display setting information to be applied to each video signal by the display device, and includes a configuration of each part of the display device and the output device including a format of the display setting information, and a connection method between the display device and the output device. Various changes are possible. Further, embodiments obtained by appropriately combining technical means disclosed in different embodiments within the scope disclosed in the claims are also included in the technical scope of the present invention.

The present invention can be widely used for an apparatus for reproducing a video signal by applying a reproduction parameter corresponding to each video signal.

1 Display System 100 Output Device 170 Switching Control Unit (Generation Unit)
180 storage unit 190 communication unit (output unit)
130 External video input (video signal acquisition unit)
140 External video input (video signal acquisition unit)
200 Display device 208 Source ID detection unit (acquisition unit)
210 Control unit 216 Storage unit 203 Communication unit (video signal acquisition unit)
204 Communication unit (video signal acquisition unit)
207 Switching control unit 400 Output device 420 Channel selection unit (generation unit)
480 Storage unit 490 Communication unit (output unit)
500 Output device 521 Playback unit (generation unit)
580 Storage unit 590 Communication unit (output unit)
600 display device 608 source ID detection unit (acquisition unit)
610 Control unit 616 Storage unit 603 Communication unit (video signal acquisition unit)

Claims

An output unit for outputting various signals including a video signal to a display device;
A storage unit storing basic information for generating source identification information for at least identifying the supply source of the video signal to be output to the display device and the type of the video signal;
A generation unit that reads the basic information from the storage unit, generates the source identification information, and supplies the source identification information to the output unit;
An output device comprising:
The basic information above is
2. The output according to claim 1, further comprising device identification information for identifying the output device and another output device, and video signal identification information for identifying the type of the video signal. apparatus.
The generation unit identifies the supply source and the type of video signal, reads out device identification information and video signal identification information corresponding to the identified supply source and type of video signal from the storage unit, and 3. The output device according to claim 2, wherein the source identification information is generated.
When the video signal is the first video signal,
A video signal acquisition unit for acquiring a second video signal output from an output device different from the output device;
4. The switching control unit according to claim 1, further comprising a switching control unit that switches between the first video signal and the second video signal and supplies the first video signal to the output unit. 5. The output device as described.
3. The video signal identification information includes information for identifying at least one of a channel set corresponding to a frequency band of the video signal and a format of the video signal. Output device according to.
The output unit detects connection and disconnection of communication between the output device and the display device, and when reconnection is detected after communication with the display device is disconnected, the output unit notifies the display device before disconnection. 6. The output device according to claim 1, wherein the source identification information is read from the storage unit and re-notified to the display device.
The output device according to claim 1, wherein the output unit wirelessly outputs the video signal to the display device and notifies the source identification information.
A display device that receives a video signal output from an output device and reproduces a video represented by the video signal,
An acquisition unit for acquiring, from the output device, source identification information for identifying at least the supply source of the video signal and the type of the video signal;
A storage unit storing a correspondence relationship between a parameter applied to the video signal and the source identification information for displaying the video signal;
A control unit that reads a parameter corresponding to the source identification information acquired by the acquisition unit from the storage unit and sets the parameter as a reproduction parameter applied to the correction of the video signal;
A display device comprising:
When the video signal is the first video signal,
A video signal acquisition unit for acquiring a second video signal output from an output device different from the output device;
The display device according to claim 8, further comprising: a switching control unit that switches between the first video signal and the second video signal and supplies the switching unit to the acquisition unit.
A communication unit for communicating with the output device;
The control unit detects a communication state with the output device via the communication unit, and disconnects the communication when it detects that the communication with the output device is disconnected and reconnected. 10. The display device according to claim 8, wherein the parameter applied to the video signal is read from the storage unit immediately before.
The control unit manages the correspondence between the source identification information and the parameter using a counter that subtracts from the maximum number N of the source identification information that can be stored in the storage unit,
Furthermore, the control unit sets the counter value of the newly notified source identification information to N, and sets the source identification information other than the newly notified source identification information to less than N.
11. The apparatus according to claim 8, wherein at least the newly notified source identification information is identified by N among the plurality of source identification information stored in the storage unit. The display device described.
The output device according to any one of claims 1 to 7,
A display system comprising the display device according to claim 8.
A unit for operating the computer as each unit included in the output device according to any one of claims 1 to 7 or each unit included in the display device according to any one of claims 8 to 11. program.
A computer-readable recording medium storing the program according to claim 13.