JP2012004964A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device capable of notifying a user of change of a connection state of an external device and in which usability of a user is improved.SOLUTION: A TV receiver has a connection device management information in which identification information for identifying an HDMI device connected to an HDMI terminal is stored. When the HDMI device is connected to the HDMI terminal (YES at S3), the TV receiver uses a CEC command to obtain identification information from the connected HDMI device (S5). The TV receiver then reads the identification information stored in the connection device management information, and determines whether such identification information and the identification information obtained at the above-described S5 correspond to each other (S6). As a result of the determination, for example, when contents of "OSD Name" do not correspond or the like (NO at S7), an OSD output part is used to display on a display a message that connection state of the HDMI device connected to the HDMI terminal is changed (S10).

Description

The present invention relates to HDMI (High-Definition Multimedia In
The present invention relates to a display device to which an external device compatible with the (face) standard can be connected.

In recent years, it has been possible to connect an external device (hereinafter referred to as an HDMI device) compatible with the HDMI standard.
V receivers are in widespread use. Some users may use a plurality of HDMI devices connected to the TV receiver. The HDMI device and the TV receiver are connected via an HDMI cable, and each device controls operations with a control signal (hereinafter referred to as a CEC command).

When a stationary HDMI device is connected to the TV receiver, generally, the frequency of disconnecting this type of HDMI device from the TV receiver is very low. That is, this kind of H
Since the DMI device and the TV receiver are almost always connected, the HD from the TV receiver
When the MI device cannot be controlled, the user generally recognizes that the HDMI device has failed.

However, the HDMI cable has been disconnected for some reason, or T
The TV connected to the HDMI terminal of the V receiver has changed.
Even when the HDMI device cannot be controlled from the receiver, the user may not realize that the HDMI device cannot be controlled from the TV receiver because the connection state is changed due to such a cause. Therefore, it is not possible to prevent the user from misrecognizing that the HDMI device is malfunctioning, which is inconvenient.

On the other hand, TV receivers that can display a list of device information of connected HDMI devices are known (see, for example, Patent Documents 1 and 2). However, in this type of TV receiver, if the user does not compare the content of the device information list displayed last time with the content of the device information list displayed this time, the connected HDMI device is connected. Since it is not known that the connection state has been changed, the change in the connection state cannot be easily known, and the above problem cannot be solved.

JP 2009-194753 A JP 2009-2111163 A

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a user-friendly display device that can notify a user when the connection state of an external device is changed. And

In order to achieve the above object, the invention of claim 1 is based on HDMI (High-Definiti).
connection means capable of connecting a plurality of external devices corresponding to the on-Multimedia Interface) standard, identification information acquisition means for acquiring identification information from the external devices connected to the connection means, and notification for notifying the user of various messages And a control means for controlling each part of the apparatus. The display device further comprises an identification information storage means for storing the identification information acquired by the identification information acquisition means, and the control means is activated by the own apparatus. When the identification information is acquired from the external device connected to the connection means using the identification information acquisition means, the acquired identification information and the identification information stored in the identification information storage means If the result of this determination is that they do not match, the notification means is used to notify the user and the connection means. It is intended to notify the subject that the external device has been continued is changed.

The invention according to claim 2 is the display device according to claim 1, wherein the identification information is HD.
It includes “Physical Address”, “Vendor ID”, or “OSD Name” in the MI standard.

According to the present invention, after acquiring identification information from a connected external device, if the acquired identification information and the stored identification information do not match, the user is notified of the connected external device. Notify that it has been changed. For this reason, the user can easily know that the connection state of the external device has been changed. For example, the user can easily notice unintentional disconnection of the external device or change of the connection state of the external device. , It improves usability.

1 is a schematic configuration diagram illustrating a TV receiver according to an embodiment of the present invention and a plurality of HDMI devices connected to the TV receiver. The block diagram which shows the internal structure of the said TV receiver. The flowchart which shows the procedure of the connection apparatus change detection process in the said TV receiver. Explanatory drawing which shows an example of the message displayed on a display in the said connection apparatus change detection process. The flowchart which shows the detailed procedure of the connection apparatus management information update process in the said connection apparatus change detection process.

Hereinafter, a television receiver according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 shows a television (hereinafter referred to as TV) receiver (display device) 1, HDD recorders (external devices) 41 and 42 connected to the TV receiver 1, and a DVD player (external device). ) 51 shows a schematic configuration. FIG. 2 shows the internal configuration of the TV receiver 1.

The TV receiver 1, the HDD recorders 41 and 42, and the DVD player 51 are all HD.
MI (High-Definition Multimedia Interface)
The device is compliant with the standard, and can transmit and receive a CEC command based on the HDMI-CEC standard and response data for the CEC command. Each of the HDD recorders 41 and 42 and the DVD player 51 is connected to the TV receiver 1 via the HDMI cables 31 to 33.
Connected.

As shown in FIG. 2, the TV receiver 1 includes a tuner unit 11 that receives a broadcast signal broadcast from a broadcasting station, and a display 12 that displays a video of a TV program based on the broadcast signal received by the tuner unit 11. And a speaker 13 for outputting the sound of the TV program and an operation unit 14 having various operation buttons operated by the user. Also, the TV receiver 1 is an HDM
HDMI terminal unit 15 for connecting an external device (hereinafter referred to as HDMI device) compliant with the I standard, a memory (identification information storage means) 16 for storing various information, and a control microcomputer for controlling each part of the device (Control means) 17 is further provided.

The HDMI terminal unit 15 includes a first HDMI terminal 15a to a fifth HDMI terminal 15e (connection means), and the number of HDMI devices that can be connected to the TV receiver 1 via the HDMI cable is five.

An HDMI cable 31 connected to the HDD recorder 41 is connected to the first HDMI terminal 15a.
One end of the HDMI cable 32 connected to the HDD recorder 42 is connected to the second HDMI terminal 15b. The third HDMI terminal 15c has a DVD
One end of the HDMI cable 33 connected to the player 51 is connected.

The memory 16 stores a program 16a for operating the control microcomputer 17 and connected device management information (identification information storage means) 16b.

The connected device management information 16b stores identification information for identifying the HDMI device connected to the first HDMI terminal 15a to the fifth HDMI terminal 15e. Specifically, for example, the connected device management information 16b is “Physical Address” in the HDMI standard.
, “Vendor ID”, “OSD Name”, and the like are stored.

The control microcomputer 17 includes a video output unit 17a, an audio output unit 17b, an HDMI communication unit (
ID information acquisition means) 17c, connected device change detection unit 17d, OSD (On-Screen)
n Display) output unit (notification means) 17e. The control microcomputer 17 is H
Change of connected device that acquires identification information from an HDMI device connected to the DMI terminal unit 15 (first HDMI terminal 15a to fifth HDMI terminal 15e) and detects whether or not the connection state of the connected HDMI device is changed A detection process is performed, and various messages are displayed according to the result of the process to notify the user.

The video output unit 17 a outputs the video of the TV program received by the tuner unit 11 to the display 12. The audio output unit 17 b outputs the audio of the TV program received by the tuner unit 11 to the speaker 13.

The HDMI communication unit 17 c includes an HDD recorder 41 connected to the HDMI terminal unit 15.
42, various CEC commands and response data are transmitted / received to / from HDMI devices such as the DVD player 51. Specifically, for example, for a HDMI device, “Physica
l Address ”,“ Vendor ID ”,“ OSD Name ”, a CEC command for inquiring a logical address, and the like are transmitted, and response data transmitted from the HDMI device is received.

The connected device change detection unit 17 d detects whether the connection state of the HDMI device connected to the HDMI terminal unit 15 has been changed based on the connected device management information 16 b stored in the memory 16. The OSD output unit 17e displays various messages for informing the user.
It is displayed on the display 12 by SD.

Next, connected device change detection processing in the TV receiver 1 will be described with reference to FIGS. FIG. 3 is a flowchart illustrating the procedure of the connected device change detection process. FIG.
An example of the message displayed on the display 12 is shown. Here, it is assumed that the identification information of the HDMI device connected to the first HDMI terminal 15a to the fifth HDMI terminal 15e is already stored in the connected device management information 16b.

First, when the power of the TV receiver 1 is turned on and the own apparatus 1 is activated (S1), the control microcomputer 17 determines whether or not an HDMI device is connected to the first HDMI terminal 15a to the fifth HDMI terminal 15e. Is determined (S2). If the HDMI device is not connected as a result of this determination (NO in S3), the control microcomputer 17 uses the OSD output unit 17e to
A message indicating that the device is not connected is displayed on the display 12 (S4). The message displayed on the display 12 is, for example, “No device connected”.

On the other hand, if the result of determination in S2 is that an HDMI device is connected (YES in S3),
The control microcomputer 17 uses the HDMI communication unit 17c to make the first HDMI terminal 15a to the fifth HDMI.
Identification information is acquired from the HDMI device connected to the HDMI terminal 15e (S5). Specifically, the control microcomputer 17 uses the HDMI communication unit 17c to send a CEC command “
System Information ”,“ Device OSD Name Tra ”
nsfer "and" Vendor Specific "are transmitted to the HDMI device, so that the" Physical Address "," OSD Name "are transmitted from the HDMI device.
”And“ Vendor ID ”.

Then, the control microcomputer 17 reads the identification information stored in the connected device management information 16b, and determines whether this identification information matches the identification information acquired in S5 (S6).
).
As a result of this determination, if the contents of “OSD Name” do not match (NO in S7), “Ve
If the contents of “ndor ID” do not match (YES in S7, NO in S8), or “Phy
If the contents of "sical address" do not match (YES in S7, YES in S8,
The control microcomputer 17 displays a message on the display 12 that the connection status of the HDMI devices connected to the first HDMI terminal 15a to the fifth HDMI terminal 15e has been changed using the OSD output unit 17e. (S10). The message displayed on the display 12 is, for example, “The connected device has been changed” as shown in FIG.

Then, the control microcomputer 17 performs a connected device management information update process for updating the contents of the connected device management information 16b based on the identification information acquired in S5 (S11).

Next, the procedure of the connected device management information update process in S11 will be described with reference to the flowchart shown in FIG. First, the control microcomputer 17 uses the OSD output unit 17e to display a message on the display 12 for confirming to the user whether or not to update the connected device management information 16b (S21).

When updating of the connected device management information 16b is selected by the user (YES in S22),
The control microcomputer 17 updates the content of the connected device management information 16b to the content of the identification information acquired in S5 of FIG. 3 (S23). On the other hand, when the update of the connected device management information 16b is not selected by the user (NO in S22), the control microcomputer 17 does not perform the process of S23.

As described above, in the TV receiver 1 according to the present embodiment, the first HDMI terminal 15a.
After acquiring the identification information from the HDMI device connected to the fifth HDMI terminal 15e, if the acquired identification information does not match the identification information stored in the connected device management information 16b, the connected HDMI device A message to the effect that the connection state is changed is displayed on the display 12. Therefore, the user can easily know that the connection state of the HDMI device connected to the TV receiver 1 has been changed. For example, unintentional disconnection of the HDMI device or connection state of the HDMI device can be detected. The change can be easily noticed and the usability is improved.

Further, even when the HDMI device is not connected to the first HDMI terminal 15a to the fifth HDMI terminal 15e, a message indicating that the HDMI device is not connected is displayed on the display 12. Therefore, if the user connected HDMI device last time,
Since it is possible to easily know that the connection state of the I device has been changed, usability is improved.

In addition, this invention is not restricted to the structure of the said embodiment, A various deformation | transformation is possible in the range which does not change the meaning of invention. For example, in the above-described embodiment, the case where the display device described in the claims is a TV receiver has been described. However, the present invention is not limited to this. Also good. Further, when the connection state of the HDMI device is changed, a voice message for notifying the user of the change of the connection state of the HDMI device may be output from a speaker.

1 TV receiver (display device)
16 memory (identification information storage means)
17 Microcomputer for control (control means)
41, 42 HDD recorder (external device)
51 DVD player (external equipment)
15a First HDMI terminal (connection means)
15b Second HDMI terminal (connection means)
15c 3rd HDMI terminal (connection means)
15d 4th HDMI terminal (connection means)
15e 5th HDMI terminal (connection means)
16b Connected device management information (identification information storage means)
17c HDMI communication unit (identification information acquisition means)
17e OSD output unit (notification means)

Claims (2)

HDMI (High-Definition Multimedia Interface)
ce) a connection means capable of connecting a plurality of external devices corresponding to the standard;
Identification information acquisition means for acquiring identification information from an external device connected to the connection means;
Notification means for notifying the user of various messages;
In a display device comprising control means for controlling each part of the device,
Further comprising identification information storage means for storing the identification information acquired by the identification information acquisition means,
The control unit acquires the identification information from the external device connected to the connection unit using the identification information acquisition unit when the own device is activated, and then acquires the acquired identification information and the identification information. It is determined whether or not the identification information stored in the storage means matches. If the result of this determination does not match, the external means connected to the connection means is connected to the user using the notification means. A display device that notifies that a device has been changed. The identification information includes “Physical Address”, “V” in the HDMI standard.
The display device according to claim 1, wherein the display device includes “endor ID” or “OSD Name”.

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