JP4930278B2 - Electronics - Google Patents

Description

  The present invention relates to an electronic device that transmits an image signal having a screen resolution corresponding to a display device connected thereto.

  2. Description of the Related Art Conventionally, electronic devices that transmit an image signal having a screen resolution corresponding to a display device connected to the display device have been widely used. Such electronic devices include a DVD player, a Blu-ray disc player (BD player), a set top box (STB), and the like. Also, this type of general electronic device uses HDMI (High Definition Multimedia Interface) as a connection interface with a display. HDMI is an interface that controls notification of EDID (Extended Display Identification Data) from the display device to the electronic device, transmission of image signals and audio signals from the electronic device to the display device. The EDID is device information including a screen resolution that can be displayed by the display device. The electronic device sends an image signal having a screen resolution based on the EDID acquired from the display to the connected display.

  A general electronic device is connected to the connected display unit when the display unit is connected to the main body of the electronic device in order to send an image signal having a screen resolution that can be properly displayed by the display unit. An EDID is obtained from the displayed display, and an authentication process for authenticating the display is performed (see Patent Document 1).

Note that when the display unit is connected to the electronic device body, not only when the electronic device body and the display unit are actually connected with a cable, but also when the electronic device detects the connection of the display unit first after startup. Sometimes also included.
JP 2007-78980 A

  However, in a general home, it is rare to replace the display connected to the electronic device. That is, in most cases, the display device that first detects the connection after the start-up of the electronic device is the same as the display device that was connected when the start-up was stopped last time. When the connection of the display device is detected for the first time, an EDID is obtained from this display device, and authentication processing is performed for authentication. The authentication process for authenticating the display device takes about several seconds (2 to 3 seconds). Therefore, there is a problem that the timing for displaying an image on the display device is delayed by the time required for the authentication process, and the usability of the user is lowered.

  An object of the present invention is to provide an electronic apparatus that improves the user-friendliness by suppressing the time taken from the activation of a main body until an image is displayed on a display.

  The electronic device of the present invention is configured as follows in order to solve the above problems.

In this electronic device, the storage unit stores the type of the display device and the device information including the screen resolution of the display device of this type in association with each other. Further, the type acquisition means requests the display connected to the interface to transmit the type of the display at the time of activation, and acquires the type of the display from the display. If the storage means stores device information for the display of the type acquired by the type acquisition means, the screen resolution setting means sends an image signal to the display connected to the interface. Is set to the screen resolution included in the corresponding device information stored in the storage means. For this reason, if the storage means is a type of display that stores device information, the EDID is acquired from the display and sent to the display without performing authentication processing for authenticating the display. The screen resolution of the image signal to be set can be set. In other words, if the device information of the display connected to the electronic device main body is stored in the storage means, the electronic device is connected at startup until the display connected to the electronic device is replaced. The screen resolution of the image signal transmitted to the display can be set without performing authentication processing for authenticating the display. Therefore, the time required from the activation of the electronic device main body to the display of the image on the display device can be reduced, and the user-friendliness can be improved.

In addition, for the display of the type acquired by the type acquisition unit, the device information acquisition unit sets the screen resolution for the display connected to the interface if the storage unit does not store the device information. Requests transmission of the device information including the device information, and acquires device information including the screen resolution from the display device. In this case, the screen resolution setting means sets the screen resolution of the image signal transmitted to the display device connected to the interface to the screen resolution included in the device information acquired this time. Therefore, even if the storage unit is a type of display device that does not store device information, an image signal having a screen resolution that can be appropriately displayed by the display device can be transmitted.

  Note that a configuration may be provided in which the device information acquired by the device information acquisition unit is stored in the storage unit in association with the type of the display unit.

  According to the present invention, it is possible to reduce the time taken from the activation of the main body until the image is displayed on the display device, and to improve the user-friendliness.

  Embodiments of the present invention will be described below.

  FIG. 1 is a schematic diagram showing the configuration of the main part of the electronic apparatus according to this embodiment. The electronic device 1 sends an image signal having a screen resolution corresponding to the display 10 to the connected display 10. For example, a DVD player, a Blu-ray disc player (BD player), and a set top box (STB). As shown in FIG. 1, the electronic device 1 includes a control unit 2, an HDMI 3 (High Definition Multimedia Interface 3), a storage unit 4, an operation unit 5, and a main processing unit 6.

  The control unit 2 controls the operation of each part of the main body. A display 10 is connected to the HDMI 3. The HDMI 3 is an interface that controls input / output between the electronic device 1 and the display 10. The electronic device 1 transmits an image signal and an audio signal to the display device 10 connected to the HDMI 3. In addition, the electronic device 1 acquires EDID (Extended display identification data) sent from the display device 10 connected to the HDMI 3. The EDID is device information including a screen resolution that can be displayed by the display 10. The storage unit 4 stores the type of the display device 10 and the EDID of the display device 10 of this type in association with each other. The storage unit 4 may be a memory (EEPROM or SDRAM) built in the main body, or may be a memory card (SD memory card) that is detachable from the main body. The storage unit 4 is preferably non-volatile, but may be constituted by a battery-backed volatile memory. Moreover, you may comprise with a hard disk. The operation unit 5 receives an input operation on the main body of the electronic device 1. The operation unit 5 includes not only operation keys operated by the user but also a remote control reception unit that receives a control signal for the main body of the electronic device 1 transmitted from a remote control device (not shown).

  The main processing unit 6 has different functions depending on the type of the electronic device 1 main body. For example, if the electronic device 1 is a DVD player, the main processing unit 6 performs processing to read data recorded on a DVD set in the main body, decode the read data, and output the data. Further, if the electronic device 1 is an STB, the main processing unit 6 extracts a TV broadcast signal of the channel selected at that time from the input TV broadcast signal, and the TV broadcast signal extracted here It is comprised with what is called a tuner which performs the process which outputs.

  Next, the operation of the electronic device 1 will be described. FIG. 2 is a flowchart showing processing at the time of activation of the electronic apparatus. When the power of the main body is turned on, the electronic device 1 executes the process shown in FIG. The electronic device 1 determines whether or not the display device 10 is connected to the HDMI 3 (S1). If the display device 10 is not connected to the HDMI 3, the electronic device 1 waits for the display device 10 to be connected to the HDMI 3 in S1. If the electronic device 1 determines that the display device 10 is connected to the HDMI 3 in S1, the electronic device 1 acquires a type code indicating the type of the display device 10 (S2). In S <b> 2, the electronic device 1 requests the display device 10 connected to the HDMI 3 to transmit a type code indicating the type of the display device 10. And the classification of this display 10 is acquired by receiving the classification code transmitted from the display 10 in response to this request.

  Here, the electronic device 1 is assumed to acquire a type code that can specify the type of the display device 10, but instead of this type code, an identification code for identifying the display device 10 itself may be used.

  The electronic device 1 determines whether the type code acquired in S2 and the EDID are stored in the storage unit 4 in association with each other (S3). If the electronic device 1 stores the type code acquired in S2 and the EDID in association with each other in the storage unit 4, the screen resolution of the image signal transmitted to the display device 10 based on the corresponding EDID. Is set (S4), and this process is terminated. At this time, the output form is also set for the audio signal to be output based on the corresponding EDID.

  On the other hand, if the electronic device 1 does not store the type code acquired in S2 and the EDID in association with each other in the storage unit 4, the electronic device 1 requests the display 10 to transmit EDID (S5). When receiving the EDID transmitted from the display device 10 (S6), the electronic device 1 sets the screen resolution of the image signal transmitted to the display device 10 based on the EDID received this time (S7). The process according to S5 to S7 is an authentication process for authenticating a connected display, which is performed when a conventional electronic device is activated.

  When the electronic device 1 sets the screen resolution or the like of the image signal transmitted to the display device 10 connected to the HDMI 3 in S7, the type code acquired in S2 and the EDID received in S6 are associated with each other. Inquiry processing for inquiring the user as to whether or not to store in the storage unit 4 is performed (S8). In S8, the image signal related to this inquiry is sent to the display 10. FIG. 3 shows an example of a display screen displayed on the display 10 that has received this image signal. That is, the electronic device 1 makes an inquiry to the user by displaying the screen shown in FIG. In S8, an image signal having the screen resolution set in S7 is transmitted. The electronic device 1 performs the inquiry process according to S8, receives an input to the inquiry, or waits for a predetermined time (for example, 15 seconds) to elapse (S9 to S11).

  When there is an input for storing, the electronic device 1 stores the type code acquired in S2 and the EDID received in S6 in association with each other in the storage unit 4 (S12), and ends this process. On the other hand, if there is an input indicating that the information is not stored, the process ends without performing the process according to S12. Furthermore, the electronic device 1 stores the type code acquired in S2 and the EDID received in S6 in association with each other in the storage unit 4 when a predetermined time has elapsed without receiving an input to the inquiry. (S12) This process is terminated.

  Here, the information stored in the storage unit 4 in S12 will be described. FIG. 4 is a diagram illustrating information stored in the storage unit. As illustrated in FIG. 4, for each type of display device 10, the storage unit 4 stores a type code indicating the type and the EDID of the display device 10 of this type in association with each other. Moreover, the memory | storage part 4 matches and memorize | stores the date which memorize | stored the classification code and EDID for every classification of the indicator 10. FIG. That is, in S12, the electronic device 1 stores the type code acquired in S2, the EDID received in S6, and the date at that time in the storage unit 4 in association with each other.

  As described above, the electronic device 1 associates the type code and the EDID in the storage unit 4 with respect to the inquiry from the electronic device 1 related to S8 for the display 10 of the type connected for the first time. When an input operation for storing is performed, the type code of the display 10 and the EDID are associated with each other and stored in the storage unit 4. Also, the electronic device 1 associates the type code and the EDID in the storage unit 4 within a predetermined time in response to an inquiry from the electronic device 1 related to S8 for some reason by the user. Even when the input operation for storing is not performed, the type code of the display 10 and the EDID are associated with each other and stored in the storage unit 4.

  As shown in FIG. 2, if the type of the display device 10 connected to the HDMI 3 is the type in which the EDID is stored in the storage unit 4, the electronic device 1 can display the display device when the main body is activated. The EDID is acquired from 10 and the authentication process for authenticating is not performed. Since it is rare to replace the display device 10 connected to the electronic device 1 in a general home, the display device 10 connected to the HDMI 3 when the electronic device 1 body is started up and the previous start / stop The display 10 that was sometimes connected is in most cases the same. Since the electronic device 1 is configured to store the type code of the display 10 and the EDID in association with each other in the storage unit 4 as described above, an image is displayed on the display 10 after the main body is activated. The time taken for the display to be displayed is suppressed, and the usability of the user in a general home can be improved.

  When the display device 10 connected to the electronic device 1 is temporarily replaced due to a failure of the display device 10 used so far, the user makes an inquiry from the electronic device 1 according to S8. On the other hand, it is possible to prevent unnecessary information from being stored in the storage unit 4 by performing an input operation in which the type code and the EDID are associated with each other and are not stored in the storage unit 4.

  Further, the storage unit 4 is configured to store a type code and an EDID in association with each other for the display 10 of one type, and the type of the display 10 connected when the electronic device 1 main body is activated, If the type of the display unit 10 stored in the storage unit 4 is different, the type code and EDID stored in the storage unit 4 are changed to the type and EDID of the display unit 10 connected at the time of starting this time. It is good also as a structure updated to. In this way, the electronic device 1 can suppress an increase in storage capacity that occurs because the type of the display 10 and the EDID are stored.

  Further, the user can delete the type code and EDID of the display 10 stored in the storage unit 4 for each type of the display 10. More specifically, the user performs an input operation related to a request for confirming the type code and EDID of the display device 10 stored in the storage unit 4 with the operation unit 5 or a remote controller (not shown). The electronic device 1 displays the type code and the EDID stored in the storage unit 4 and the image signal to be displayed in a list for each type of the display 10 according to the input operation related to the confirmation request of the user. To send. Thereby, the display shown in FIG. 5 is displayed on the display device 10 connected to the main body of the electronic apparatus 1. In FIG. 5, the type code and EDID displayed in the hatched area are the type code and EDID of the display 10 connected at this time. The area indicated by hatching is highlighted. A cursor is displayed for the type code and EDID selected at this time.

  While viewing the screen displayed on the display 10, the user selects the type code and EDID of the display 10 that is no longer needed and is stored in the storage unit 4. The operation related to this selection can be performed by the operation unit 5 or a remote controller (not shown). When the selection of the type code and the EDID is changed, the electronic device 1 sends an image signal to the display device 10 according to the change. Then, when an input operation for deleting the type code and EDID selected by the user is performed, the electronic device 1 deletes the corresponding type code and EDID stored in the storage unit 4.

  In this way, the user can delete the type code and EDID of the display device 10 that are no longer required and are stored in the storage unit 4.

It is the schematic which shows the structure of the principal part of the electronic device concerning this embodiment. It is a flowchart which shows the process at the time of starting of this electronic device. It is a figure which shows the example of a display screen in the display which received the image signal. It is a figure which shows the information which a memory | storage part memorize | stores. It is a figure which shows the example of a display screen of the information which a memory | storage part memorize | stores.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Electronic device 2 ... Control part 3 ... HDMI
4 ... Storage unit 5 ... Operation unit 6 ... Main processing unit 10 ... Display

Claims (4)

In an electronic device that includes an interface to which a display is connected and transmits an image signal to the display connected to the interface,
Storage means for storing the type of the display device and the device information including the screen resolution of the display device of this type in association with each other;
A type acquisition means for requesting the display connected to the interface to transmit the type of the display at the time of startup, and acquiring the type of the display from the display;
For the type of display acquired by the type acquisition means, if the storage means stores device information, the screen resolution of the image signal sent to the display connected to the interface is stored in the storage means. Screen resolution setting means for setting the screen resolution included in the corresponding device information stored in
For the display of the type acquired by the type acquisition means, if the storage means does not store the device information, the display connected to the interface is requested to transmit the device information including the screen resolution. , and a device information acquisition means for acquiring device information including the display resolution from the display device,
When the device information acquisition unit acquires device information from the display connected to the interface, the screen resolution setting unit determines a screen resolution of an image signal to be transmitted to the display connected to the interface. An electronic device that is a means for setting the screen resolution included in the device information acquired this time   For the display of the type in which the storage means stores the device information, when receiving an instruction to delete the device information, provided with a deletion means for deleting the corresponding device information stored in the storage means, The electronic device according to claim 1.   When the device information acquisition unit acquires the device information from the display connected to the interface, the type of the display and the device information including the screen resolution of the display of this type are stored in the storage unit. The electronic device according to claim 1, further comprising inquiry means for inquiring whether to do.   The storage means stores the type of display device acquired this time and device information including the screen resolution of the display device of this type if there is no response to the inquiry by the inquiry means within a predetermined time. 3. The electronic device according to 3.

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