JP2008141562A - Video display device and video processing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To allow information (channel information and sound-volume information or the like), which is required to be displayed simultaneously with a main video image, to be displayed in the middle of displaying the main video image on a screen while preventing the main video image from being difficult to see in a television screen. <P>SOLUTION: A video display device X is provided with a video display means for displaying a video image based on a video signal and a communication means that executes communication with an external video display device (for example, a small television receiver) provided with a video display function. Information (channel information and sound-volume information or the like) as a display target is transmitted through the communication means after being selected with a remote control 8. Consequently, it is possible to display the information as a display target on the external video display device. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a video display device and a video processing device that outputs a video signal to the video display device, and in particular, a video display for displaying a main video image to be viewed and other information on separate display means. The present invention relates to a device and a video processing device.

In recent years, with the development of thin and large screen display means such as liquid crystal panels, large screen television receivers are becoming popular. A user of such a large-screen television receiver can feel a high sense of realism while staying at home by viewing videos such as movies and sports on a large screen. In that case, the television receiver is connected to an external device such as a recording / playback device or a satellite broadcast receiver, and displays a video such as a movie or sports on the screen based on a video signal transmitted from the external device. There are many. A user owns a television receiver with a large screen and a television receiver with a relatively small screen, and uses them according to the purpose.
In Patent Document 1, when there are two monitor screens, the entire video is displayed on one monitor screen and the central portion of the video is enlarged on the other monitor screen. A technique for displaying images is shown.

On the other hand, as disclosed in Patent Document 2, as one of means for performing signal transmission between a plurality of devices such as a television receiver and its peripheral devices (recording / playback apparatus, sanitary broadcast receiver, etc.), the HDMI standard is used. Use of a signal transmission means (hereinafter referred to as HDMI interface) compliant with the standard improves convenience. This HDMI interface can simultaneously transmit a digital video signal and an audio signal by a cable combined in appearance, and can realize simple wiring and signal transmission without deterioration. Here, the HDMI interface transmits unencoded (uncompressed) video signals and audio signals (transmitted by the baseband method), so it is not affected by the difference in the signal encoding method between devices. And excellent durability (possibility of connection with devices that adopt a new encoding method in the future).
In the HDMI interface, a signal including a video signal and an audio signal is transmitted at high speed through a TMDS (Transition Minimized Differential Signaling) signal transmission line (hereinafter referred to as a TMDS line).
The HDMI standard further defines the CEC (Consumer Electronics Control) standard, and the HDMI interface is a signal transmission means including a signal transmission line (hereinafter referred to as a CEC line) compliant with the CEC standard. Composed. The HDMI interface including the CEC line can transmit other information (such as control information) through the CEC line in addition to transmission of video signals and audio signals through the TMDS line. The HDMI interface can transmit video signals and audio signals through the TMDS line only in one direction, but can transmit information through the CEC line in both directions.
In a plurality of devices connected by the CEC line, the control unit that controls the CEC line is maintained in a state of being always energized, and the control unit energizes other devices (electronic components) through a predetermined energization switching circuit. The state can be switched. For this reason, in a system in which a plurality of devices are connected via the CEC line, another device can automatically start (remotely start) another device by transmitting a predetermined start command via the CEC line. In FIG. 1 referred later, the front microcomputers 9, 29, and 39 correspond to the control unit.

By the way, in a conventional television receiver, for example, when a volume adjustment operation is performed, information (bar graph, numerical value, etc.) indicating the volume is displayed on a television screen (video display section of the television receiver). Are superimposed on the image currently displayed (the main image being viewed). In addition, when image quality adjustment or other parameter setting operations are performed, information corresponding to these operations is similarly displayed over the main image being displayed on the television screen by the so-called OSD function. The
On the other hand, a recent recording / playback apparatus acquires EPG information by extracting a signal superimposed on a broadcast signal, receiving data via the Internet, and the like, and a function for selecting a recorded program based on a selection menu including the EPG information, or recorded data In addition to (video and audio data), it has a function of storing EPG information (hereinafter referred to as EPG information with recording data) such as program title, broadcast channel, date and time related to the recording data in the storage unit. Further, the recording / reproducing apparatus has a function of superimposing the EPG information accompanied with the recording data on the reproduced video signal while outputting the reproduced video signal of the recorded data to the television receiver. As a result, a video in which the EPG information with the recorded data is superimposed on the main video being reproduced is displayed on the television screen. The recording / playback apparatus may have a function of superimposing information (e.g., playback counter information) related to the elapsed time after playback start and the remaining time until playback end on the playback video signal.
Hereinafter, other information (volume information, EPG information with recording data, information on the reproduction counter, etc.) displayed superimposed on the main video that is the main viewing object in a conventional television receiver or recording generation device. (Information that is not subject to viewing) is referred to as display target information.
JP-A-3-265386 JP 2004-208290 A

However, when the display target information is superimposed on the main video on the television screen, there is a problem that it is difficult for the user to see the main video. In particular, in recent large-screen television receivers, the display target information is also displayed large on the large television screen, and the beauty of the main video is greatly impaired. In general, a user of a large-screen television receiver often desires to watch a movie or a sport video (the main video) while feeling a sense of reality, and for such a user, the beauty of the main video is desired. This damage also leads to a decrease in satisfaction with the product.
Accordingly, the present invention has been made in view of the above circumstances, and the object of the present invention is to display the main video, which is the main video to be watched, on the screen at the same time as it is displayed. It is an object of the present invention to provide a video display device and a video processing device capable of displaying information in which the main image is displayed while avoiding a state in which the main video is difficult to view (a state in which the aesthetic appearance is impaired).

To achieve the above object, the present invention comprises a video display means for displaying video based on a video signal, and a communication means for communicating with an external video display device having a video display function. (1) It is comprised as a video display apparatus provided with each component shown in (3).
(1) An ornamental video signal output means for outputting an ornamental video signal for causing the video display means to display a predetermined video for viewing (corresponding to the main video).
(2) Display target information setting means for setting information to be displayed (corresponding to the display target information) during output of the video signal for viewing by the video signal output means for viewing.
(3) By transmitting the display target information set by the display target information setting means or a video signal representing the information through the communication means, the display target information is transmitted to the external video display device. Display target information external output means to be displayed.
The video display device configured as described above displays information (information to be displayed) that needs to be displayed at the same time as the ornamental video, and an external video display separate from the ornamental video display unit. It can be displayed on the display unit of the apparatus. Accordingly, the information to be displayed can be displayed at the same time without making it difficult to see the video for viewing (a state in which the beauty is impaired).
For example, the display target information setting means (2) sets information to be displayed corresponding to the detected operation when an operation on a predetermined operation unit is detected. In this case, the information to be displayed includes, for example, broadcast channel information corresponding to the ornamental video signal, information on the source of the ornamental video signal, electronic program guide information, and audio corresponding to the ornamental video signal. One or more of signal volume information and the like.

Further, it is preferable that the communication means is a signal transmission means (hereinafter referred to as HDMI interface) compliant with the HDMI standard. In this case, the display target information external output means transmits the information to be displayed through a CEC line that is a signal transmission medium compliant with the CEC standard in the HDMI standard, or the display target information through the TMDS line in the HDMI standard. It is conceivable to transmit a video signal representing target information.
Then, the video display device detects whether the external video display device is operating through the CEC line, and when it is detected that the external video display device is not operating, the CEC line It is conceivable that an activation command is transmitted to the external video display device through the network. As a result, the external video display device can be automatically started only when the information to be displayed needs to be displayed, and can be kept in a power-off state at other times, thereby reducing unnecessary power consumption. Is possible. Furthermore, as a result of the video display device being able to control peripheral external devices through the HDMI interface, the user need not be aware of operations other than operations (including remote control operations) on the video display device. The operability of the entire system including the display device and the peripheral external devices is improved.

On the other hand, the present invention may be configured as a video processing device (for example, a recording / playback device) that does not include video display means and outputs video signals to a plurality of external video display devices. That is, it comprises communication means for communicating with each of the first external video display device and the second external video display device each having a video display function, and further includes the following (4) to (6) It is comprised as a video processing apparatus provided with each component shown.
(4) An ornamental video signal output means for transmitting an ornamental video signal for displaying a predetermined video for viewing on the first external video display device through the communication means.
(5) Display target information setting means for setting information to be displayed during output of the video signal for viewing by the video signal output means for viewing.
(6) By transmitting the display target information set by the display target information setting means or a video signal representing the information through the communication means, the display target information is transmitted to the second external video. Display target information external output means to be displayed on the display device.
The video processing apparatus according to the present invention configured as described above also exhibits the same operational effects as the video display apparatus according to the present invention described above. Needless to say, the first external video display device includes means for displaying video, which corresponds to the video display device included in the video display device according to the present invention described above.
In the case of this configuration, the display target information setting means of (5) may set the information to be displayed based on information obtained from the first external video display device through the communication means. Conceivable. As a result, when information to be displayed (for example, volume information) is generated in the first external video display device, the video processing device relays the information to be displayed, for example, and the second external video display device. Can be displayed.
Specifically, the information to be displayed includes broadcast channel information and volume information corresponding to the ornamental video signal, and information stored in a predetermined information storage medium together with image data that is the basis of the ornamental video signal ( For example, one or more of a movie title stored on a DVD medium, a title of a recorded program stored on a hard disk drive, a broadcast time, and the like can be considered.

Also in the video processing apparatus, as in the video display apparatus, the communication means is the HDMI interface, and the display target information external output means is the CEC line or the TMDS in the HDMI interface. It is conceivable to transmit information to be displayed or a video signal representing the information through a line.
Similar to the video display device according to the present invention described above, the video processing device may include the start command output means for automatically starting the counterpart device by transmitting the start command through the CEC line. It is done. Such a video processing device has the same operational effects as the video display device having the HDMI interface.

  According to the present invention, the main video for viewing (the video for viewing) and the information that needs to be displayed simultaneously (the information to be displayed) are displayed on separate display means. As a result, it is possible to display the information to be displayed while avoiding a state in which the video for viewing is difficult to see (a state in which the beauty is impaired). In particular, when the above-mentioned video for viewing (for example, a movie or sports video) is displayed on the large-screen video display means, it is possible to avoid impairing the realism of the user who views the video. This leads to an improvement in user satisfaction with such a device. In addition, when a device according to the present invention configures a system that communicates with peripheral external devices through an HDMI interface, and one of the devices controls another device (automatically starts up), the user can There is no need to be aware of operations other than operations (including remote control operations) on the one device, and the operability of the entire system is improved.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings so that the present invention can be understood. The following embodiment is an example embodying the present invention, and does not limit the technical scope of the present invention.
FIG. 1 is a block diagram showing a schematic configuration of an AV system in which a video display device X, a recording / playback device Y, and an external video display device Z according to the first embodiment of the present invention are connected. FIG. FIG. 3 is a flowchart showing a procedure for displaying secondary information on an external video display device by the display device X, FIG. 3 is a diagram showing an example of a display screen in the first embodiment of the present invention, and FIG. 4 is a second embodiment of the present invention. 5 is a block diagram showing a schematic configuration of an AV system including a recording / reproducing apparatus Y according to the embodiment, and FIG. 5 is a flowchart showing a procedure for the recording / reproducing apparatus Y to display secondary information on a second external video display apparatus.
[First Embodiment]
First, the schematic configuration of the video display apparatus X according to the first embodiment of the present invention will be described using the block diagram shown in FIG.
The video display device X according to the first embodiment of the present invention includes a recording / playback device Y which is an example of a video processing device according to a second embodiment of the present invention, which will be described later, and another video display device Z (hereinafter referred to as an external device). Are connected to each other by an HDMI interface to constitute an AV system as a whole.
The video display device X is, for example, a television receiver or a DVD recorder provided with video display means. The recording / reproducing apparatus Y is, for example, an HDD type or DVD type recording / reproducing apparatus that records recorded data on a hard disk or DVD and reproduces the recorded data. Similarly, the external video display device Z is a television receiver, a DVD recorder provided with video display means, or the like.
As shown in FIG. 1, the video display device X includes a tuner 1, a video processing unit 2, a video display unit 5, a control unit 6, a light receiving unit (remote control interface) 7, a remote control 8, a front microcomputer 9, and an OSD generation unit 11. , A memory 12, a CEC interface (denoted as I / F in the figure) 13, an HDMI input unit 14, an HDMI output unit 15, and the like.

The tuner 1 extracts (selects) a broadcast channel signal designated by the control unit 6 from a broadcast signal such as a terrestrial broadcast signal or a BS satellite broadcast signal, and detects a video signal and an audio signal by detecting the extracted signal. The signal is extracted, and the video signal and the audio signal are transmitted to the video processing unit 2 and the audio switching unit (not shown), respectively.
The CEC interface 13, the HDMI input unit 14 (denoted as HDMI-RX in the figure), and the HDMI output unit 15 (denoted as HDMI-TX in the figure) are signal transmission interfaces compliant with the HDMI standard (communication means). Example). A video signal and an audio signal are input to the HDMI input unit 14 through the TMDS line 41 from the HDMI output unit 25 of the recording / playback apparatus in a baseband manner. Also, a video signal and an audio signal are output from the HDMI output unit 15 to the HDMI input unit 34 of the external video display device Z through the TMDS line 41 in the baseband method.
The CEC interface 13 is a signal transmission interface compliant with the CEC standard in the HDMI standard. The CEC interface 13 transmits / receives information to / from the CEC interface 23 of the recording / reproducing apparatus Y and the CEC interface 33 of the external video display apparatus Z through the CEC line 42. The direct transmission destination of the reception information of the CEC interface 13 and the direct supply source of the transmission information are the front microcomputer 9.

The video display unit 5 includes a liquid crystal display unit including a liquid crystal panel and a liquid crystal driver, and displays video based on the video signal output from the video processing unit 2 (an example of video display means).
The video processing unit 2 inputs video signals from the tuner 1, the HDMI input unit 14, and the OSD generation unit 11, and performs various signal processing on the video signals.
For example, the video processing unit 2 performs synthesis processing for superimposing the video signal input from the OSD generation unit 11 on the video signal input from either the tuner 1 or the HDMI input unit 14. A processing unit 4 is provided.
Further, the video processing unit 2 receives the video signal input from any one of the tuner 1, the HDMI input unit 14, and the OSD generation unit 11, and the video input from any one of the tuner 1 and the HDMI input unit 14. A switching unit that selects any one of the video signals after the synthesis process is performed on the signal in accordance with an instruction from the control unit 6 and outputs the selected video signal to the video display unit 5 3 is provided.
Here, the video signal input from the tuner 1 and the HDMI input unit 14 to the video processing unit 2 is an appreciation of a video of a broadcast program based on a broadcast signal, a video video reproduced by the recording / reproducing apparatus Y, or the like. This video signal is referred to as an ornamental video signal, and the video based on the ornamental video signal is referred to as an ornamental video. Accordingly, the video processing unit 2 is an example of the ornamental video signal output unit that outputs the video signal for viewing to the video display unit 5.
On the other hand, the video signal input from the OSD generation unit 11 to the video processing unit 2 is displaying the video for viewing such as volume information, broadcast channel identification information, EPG information, etc. Video signal for displaying secondary information (corresponding to the information to be displayed) that is desired to be displayed at the same time as the ornamental video. The video signal for displaying the secondary information is called secondary information video signal.
Furthermore, the video processing unit 2 also has an EPG extraction function that extracts EPG information (electronic program guide information) included in the broadcast signal of the program extracted by the tuner 1 and delivers it to the control unit 6.

The control unit 6 includes an MPU that is a calculation means, a ROM (EPROM) that is a storage means in which a control program executed by the MPU is stored in advance, an EEPROM that stores various information read and written in processing executed by the MPU, and the like And controls the entire video display device X. The processing and functions of the control unit 6 described below are realized by the MPU executing a program stored in the ROM.
In addition, the control unit 6 executes the process of setting the secondary information and delivering the secondary information to the OSD generation unit 11 while the video processing unit 2 outputs the ornamental video signal. (An example of the display target information setting means). For example, the control unit 6 sets the volume information as the secondary information when adjusting the volume, and sets the broadcast channel information as the secondary information when displaying the broadcast channel.
The remote controller 8 is a remote controller that outputs a wireless signal (for example, an infrared signal) for controlling the operation of the video display device X, and includes an operation input unit (not shown), a wireless signal output circuit, and the like.
The operation input unit is an operation unit for inputting information, such as a channel selection key and a volume control key, and a signal corresponding to the operation content is transmitted to the wireless signal output circuit. The operation input unit is also provided with an OSD separation key which is an operation key for switching the display mode of the secondary information. The OSD separation key separates the video of the secondary information from the composition mode for synthesizing and displaying the video of the secondary information on the video for viewing displayed on the video display unit 5 and the video for viewing. This is an operation key for switching between a separation mode to be displayed on another video display unit (by separation). In the separation mode, the video processing unit 2 transmits the secondary information video signal generated by the OSD generation unit 11 to the external video display device Z through the TMDS line 41. Thereby, the video of the secondary information is displayed by the video display unit 35 provided in the external video display device Z. The initial state of the secondary information display mode is the composite mode.
The wireless signal output circuit converts a signal transmitted from the operation input unit (that is, a control signal for the operation of the video display device X) into a wireless signal (for example, an infrared signal), and transmits the signal from the remote controller 8. This is wirelessly transmitted to the main body of the video display device.
On the other hand, the light receiving unit 7 receives a radio signal (infrared signal or the like) transmitted from the remote controller 8 and converts it into an electrical signal, thereby acquiring various information transmitted from the remote controller 8, and The acquired information is transmitted to the control unit 6.
The front microcomputer 9 is a microcomputer that executes processing for relaying information transmission between the control unit 6 and the light receiving unit 7 and the CEC interface 13.

Next, a schematic configuration of the recording / playback apparatus Y will be described. As shown in FIG. 1, the recording / playback apparatus Y includes a tuner 21, a video processing unit 22, a CEC interface (I / F) 23, an HDMI output unit 25, a control unit 26, a recording / playback unit 27, a front microcomputer 29, and the like. It is comprised.
Here, the tuner 21, the video processing unit 22, the CEC interface (I / F) 23, the HDMI output unit 25, the control unit 26, and the front microcomputer 29 are respectively connected to the tuner 1, the video processing unit 2, and the CEC in the video display device X. This is the same as the interface (I / F) 13, the HDMI output unit 15, the control unit 6, and the front microcomputer 9.
The recording / playback unit 27 executes broadcast program recording processing and recorded program playback processing. That is, the recording / playback unit 27 acquires the broadcast signal (video signal and audio signal) of the program extracted by the tuner 21 through the video processing unit 22, compresses and encodes it, and records it in a memory such as an internal HDD. Execute. Further, the recording / reproducing unit 27 delivers the broadcast program data recorded (recorded) on the HDD or the like to the video processing unit 22 while decoding the data. The video processing unit 22 executes a reproduction process that is externally output through the HDMI output unit 25.
The video processing unit 22 also has an EPG acquisition function that extracts EPG information (electronic program guide information) contained therein from the broadcast signal of the program extracted by the tuner 21 and delivers it to the recording / playback unit 27. This EPG information includes a process for generating a reserved program selection menu screen in the recording reservation process, a program title recorded on the HDD in association with a video signal and an audio signal of the recorded program (recorded program), and a broadcast. It is used when executing processing for specifying date and time.
The HDMI output unit 25 (denoted as HDMI-TX in the figure) is a signal transmission interface compliant with the HDMI standard. The HDMI output unit 25 outputs a video signal and an audio signal by the baseband method to the HDMI input unit 14 of the video display device X through the TMDS line 41.
Similar to the CEC interface 13 in the video display device X, the CEC interface 23 is a signal transmission interface compliant with the CEC standard in the HDMI standard. The CEC interface 23 transmits and receives information to and from the CEC interface 13 of the video display device X and the interface 33 of the external video display device Z through the CEC line 42. The direct transmission destination of the reception information of the CEC interface 23 and the direct supply source of the transmission information are the front microcomputer 29.
The control unit 26 includes an MPU that is an arithmetic means, a ROM (EPROM) that is a storage means in which a control program executed by the MPU is stored in advance, an EEPROM that stores various information read and written in processing executed by the MPU, and the like. And controls the entire recording / playback apparatus Y. The processing and functions of the control unit 26 described below are realized by the MPU executing a program stored in the ROM.
In addition, the control unit 26 of the recording / playback apparatus Y is configured to transmit broadcast programs (video and audio) based on the EPG information recorded in the HDD or the like by the recording / playback unit 27 and the program reservation information recorded in the HDD in advance. It also has a scheduled recording function for performing scheduled recording. Since the reserved recording function is a well-known function, detailed description thereof is omitted here.
When the recording / playback unit 27 records a broadcast program, the control unit 26 records recorded program identification information (for example, a program title) in the HDD or the like in association with the recorded data. The recorded program identification information is information included in the EPG information extracted by the recording / playback unit 27.
Furthermore, the control unit 26 sets the secondary information while the video processing unit 22 outputs the ornamental video signal, and also executes a process of passing the secondary information to the video processing unit 22. (An example of the display target information setting means).
As will be described later, in response to a request (instruction) from the video display device X, the recording / playback device Y delivers the recorded program information including the recorded program identification information to the video display device X.
Although not shown in FIG. 1, the recording / playback apparatus Y also includes a remote controller and a light receiver corresponding to the remote controller 8 and the light receiver 7 included in the video display device X, and responds to operations on the remote controller. The information is transmitted to the control unit 26 through the light receiving unit and the front microcomputer 29.

Next, a schematic configuration of the external video display device Z will be described. As shown in FIG. 1, the external video display device Z includes a tuner 31, a video processing unit 32, a CEC interface (I / F) 33, an HDMI input unit 34, a control unit 36, a front microcomputer 39, and the like. It is configured.
Here, the tuner 31, the video processing unit 32, the CEC interface (I / F) 33, the HDMI input unit 34, the control unit 36, and the front microcomputer 39 are respectively a tuner 1, a video processing unit 2, and a CEC interface in the video display device X. (I / F) 13, the HDMI input unit 14, the control unit 6, and the front microcomputer 9 are the same.
The HDMI input unit 34 (denoted as HDMI-RX in the figure) is a signal transmission interface compliant with the HDMI standard. The HDMI input unit 34 receives a video signal and an audio signal by the baseband method from the HDMI output unit 15 of the video display device X through the TMDS line 41.
Similar to the CEC interface 13 in the video display device X, the CEC interface 33 is a signal transmission interface compliant with the CEC standard in the HDMI standard. The CEC interface 33 transmits / receives information to / from the CEC interface 13 of the video display device X and the interface 23 of the recording / playback device Y through the CEC line 42. The direct transmission destination of the reception information of the CEC interface 33 and the direct supply source of the transmission information are the front microcomputer 39.
In the external video display device Z, the HDMI input unit 34 and the CEC interface 33 of the HDMI interface, the front microcomputer 39, and the external video display device Z are always energized when connected to a commercial power source. It is in a state. On the other hand, the tuner 31, the video processing unit 32, the control unit 36, and the like are in an operating state in which the external video display device Z is connected to a commercial power source, It is switched to two states, that is, the blocked standby state. The switching between the two states is realized by the front microcomputer 39 performing switching control of an energization switch (not shown).
That is, when the front microcomputer 39 detects that any command addressed to itself is received from the video display device X through the CEC interface 33 when the external video display device Z is in the standby state, the power switch Is switched from the OFF state to the ON state, thereby switching (that is, starting) the external video display device Z from the standby state to the operating state.
Further, when the front microcomputer 39 detects that a stop command is received from the video display device X through the CEC interface 33 when the external video display device Z is in the operating state, the front microcomputer 39 switches the energization switch from the ON state. By switching to the OFF state, the external video display device Z is switched from the operating state to the standby state.
Thus, the external video display device Z is switched between the operating state and the standby state by remote control from the video display device X.

Hereinafter, an example of a procedure for displaying display target information on an external video display device, which is executed by the control unit 6 of the video display device X according to the first embodiment of the present invention, will be described with reference to the flowchart of FIG. . In the following, S1, S2,... Represent identification codes of processing procedures (steps).
The control unit 6 executes the following processing according to a control program stored in advance in a ROM or the like, and the video processing unit 2 performs the processing by using the video display unit 5 for the viewing video signal. To start during output.
First, the control unit 6 monitors the input information from the light receiving unit 7 to detect whether or not the OSD separation key is pressed on the remote control 8 until the operation is detected. Repeat (S1). When the control unit 6 detects that the OSD separation key has been operated (Yes), the control unit 6 shifts the processing to the next step S2.
Next, in step S2, the control unit 6 determines whether the display mode of the secondary information at that time is the synthesis mode or the separation mode. Specifically, the control unit 6 determines whether the value of the flag information indicating the display mode of the secondary information stored in the main memory is the value indicating the separation mode or the value indicating the synthesis mode. The mode is discriminated depending on whether or not. Here, if the control unit 6 determines that the mode is the synthesis mode, the process proceeds to the next step S3. If the control unit 6 determines that the mode is the separation mode, the process proceeds to step S10 described later. Let

Next, in step S3, the control unit 6 switches the display mode of the secondary information from the synthesis mode to the separation mode. Specifically, the control unit 6 sets (updates) the value of the flag information indicating the display mode of the secondary information stored in the main memory to the value indicating the separation mode.
Next, in step S4, the control unit 6 detects whether or not the external video display device Z is in operation through the CEC interface 13 and the CEC line 42 (an example of the operation detection unit). Here, “operating” means that power is supplied to the video display unit 35 and the video processing unit 32 included in the external video display device Z, and the video display unit 35 can display video.
For example, the control unit 6 makes a predetermined inquiry to the external video display device Z through the CEC interface 13 and the CEC line 42, and the external video display device Z is operating based on a response thereto. It is detected whether or not. In step S4, when it is detected that the external video display device Z is not in operation (No), the control unit 6 transmits the external video display device Z to the external video display device Z through the CEC interface 13 and the CEC line 42. An activation command is transmitted to the server (S5) (an example of the activation command output means). As a result, in the external video display device Z, the front microcomputer 39 controls a power supply switch circuit (not shown) to start power supply to each device including the video display unit 35 and the video processing unit 32. The external video display device Z is automatically activated. On the other hand, when it is detected in step S4 that the external video display device Z is operating (Yes), the control unit 6 shifts the process to step S6.
Thus, the control unit 6 outputs the secondary information video signal to the external video display device Z only when the display mode of the secondary information is the separation mode. Only when necessary, the external video display device Z is forcibly activated through the HDMI interface. As a result, the external video display device Z is in a power-off (non-operating) state when it is not necessary to display the secondary information, and does not waste power. Further, it is not necessary for the user to bother to activate the external video display device Z, and the operation is simple.

In the next step S6 and step S7, the control unit 6 monitors the input information from the light receiving unit 7 to perform an operation that requires the secondary information to be displayed on the remote controller 8 (hereinafter referred to as secondary operation). A process for detecting whether or not an OSD separation key operation has been performed and a process for detecting whether or not the OSD separation key has been operated as in step S1 are repeated until either of them is detected (S6). , S7). When the control unit 6 detects that the secondary information display operation has been performed (Yes in S6), the control unit 6 shifts the processing to the next step S8 and confirms that the OSD separation key has been operated. If detected (Yes in S7), the process proceeds to step S10 described later.
Here, as the secondary information display operation, for example, the following operations (a) to (d) can be considered.
(A) Operation of a volume adjustment key that requires display of volume adjustment information. The volume adjustment information is information that is set by the control unit 6 according to the detection result of the operation of the volume adjustment key and is stored in the EEPROM provided in the control unit 6.
(B) Operation of a program information key that requires display of program information such as a program title and a broadcast time zone corresponding to the viewing video currently being viewed (displayed on the video display unit 5). The program information is information that the control unit 6 extracts from the EPG information acquired from the video processing unit 2 and stored in the EEPROM, information corresponding to the video for viewing.
(C) Channel identification information (an example of channel information) of the program corresponding to the viewing video currently being viewed, and information on the supply source of the viewing video signal currently being output (built-in tuner 1, external device, etc.) ) Channel display key operation that requires display. The channel identification information and the supply source information are information stored in the EEPROM when the control unit 6 controls the tuner 1 and the video processing unit 2.
(D) Operation of a video adjustment key that requires display of image adjustment information (brightness, contrast, hue, etc.) on the video display unit 5. The image adjustment information is information stored in the EEPROM in advance by the control unit 6 executing a predetermined image adjustment process.
In step S8, the control unit 6 sets information corresponding to the secondary information display operation detected in step S6 (information shown in the (a) to (d)) as the secondary information, The secondary information is delivered to the OSD generation unit 11. As a result, the OSD generation unit 11 generates a video signal (secondary information video signal) representing the secondary information set by the control unit 6 and sends the video signal to the video processing unit 2. To transmit.

In the next step S9, the video processing unit 2 inputs the video signal corresponding to the secondary information set in step S8 (that is, input from the OSD generation unit 11) in accordance with the control command from the control unit 6. The secondary information video signal) is output to the external video display device Z through the HDMI output unit 15 and the TMDS line 41. The video processing unit 2 performs a process of outputting the ornamental video signal to the video display unit 5 and a process of outputting the secondary information video signal to the external video display device Z in parallel. And run.
FIG. 3 is an example of a display screen in the first embodiment of the present invention. In FIG. 3, the ornamental video g1 is displayed on the video display unit 5 in the video display unit X, and at the same time, the secondary information video is displayed on the video display unit 35 in the external video display device Z. An example of a screen showing how g2 is displayed is shown.
As shown in FIG. 3, in an AV system including the video display device X and the external video display device Z, the secondary information (information to be displayed) that needs to be displayed simultaneously with the ornamental video. Image g2) is displayed on the video display unit 35 of the external video display device Z different from the video display unit 5 for displaying the ornamental video g1. As a result, the video display device X can simultaneously display the video g2 of the secondary information without causing a state in which the viewing video g1 is difficult to see (a state in which the aesthetic appearance is impaired).

On the other hand, if it is determined in step S2 that the secondary information display mode is the composite mode (No in S2), or if the operation of the OSD separation key is detected in Step S7 (Yes in S7). In step S10, the control unit 6 switches the secondary information display mode from the separation mode to the synthesis mode. Specifically, the control unit 6 sets (updates) the value of the flag information indicating the display mode of the secondary information stored in the main memory to the value indicating the synthesis mode.
Next, in step S11, the control unit 6 executes the secondary information display process in the synthesis mode (S11), and then shifts the process to step S1.
In step S11, when the control unit 6 detects that the secondary information display operation has been performed, the control unit 6 synthesizes the secondary information corresponding to the operation on the ornamental video (super-in). A conventionally well-known process for causing the image display unit 5 to display a pause) is executed.

In the first embodiment described above, the secondary information is output to the external video display device Z as a video signal through the TMDS line 41. However, the secondary information may be output as text information to the external video display device Z through the CEC line 42, and the secondary information (text information) may be converted into a video signal in the external video device Z. Conceivable. In this case, in step S8, the control unit 6 transmits the set secondary information signal to the front microcomputer 9 as text information. In the next step S9, the front microcomputer 9 converts the secondary information set in step S8 as text information through the CEC interface 13 and the CEC line 42 in accordance with a control command from the control unit 6. Output to the external video display device Z.
On the other hand, in the external video display device Z that has received the secondary information as text information, the secondary information is transmitted to the video processing unit 32 through the CEC interface 33, the front microcomputer 39, and the control unit 36. Is transmitted. Further, the video processing unit 32 converts the secondary information into a video signal, and outputs the video signal to the video display unit 35, whereby the video of the secondary information is displayed on the video display unit 35. Display.

[Second Embodiment]
Next, a second embodiment of the present invention will be described using the block diagrams of FIG. 1 and FIG. The schematic configuration of the recording / playback apparatus Y, which is an example of a video processing apparatus according to the second embodiment of the present invention, is as described above with reference to FIG. In the second embodiment, the recording / playback apparatus Y is connected to each of the video display apparatus X and the external video display apparatus Z via the TMDS line 41 of the HDMI interface, as shown in FIG. A video signal and an audio signal are output through the TMDS line 41 by the baseband method. In the second embodiment, for convenience, the video display device X is referred to as a first external video display device X, and the external video display device Z is referred to as a second external video display device. Called Z.
In the second embodiment, the recording / playback apparatus Y is connected to each of the first external video display apparatus X and the second external video display apparatus Z by a CEC line 42 in the HDMI interface. ing. The CEC interface 13 of the recording / playback apparatus Y can transmit / receive information to / from each of the video display apparatuses X and Z through the CEC line 42 (an example of communication means).
The video processing apparatus according to the second embodiment of the present invention may be implemented as a tuner for sanitary broadcasting or cable broadcasting, in addition to the recording / playback apparatus Y such as a DVD recorder.

Hereinafter, a procedure in which the recording / reproducing apparatus Y displays the secondary information on the second external video display apparatus Z will be described with reference to the flowchart shown in FIG. In the first embodiment, the secondary information is output to an external video display device through the TMDS line 41. However, in the second embodiment, the secondary information is transmitted through the CEC line 42 to the second information. An example of output to an external video display device Z is shown. In the following, S21, S22,... Represent identification codes of processing procedures (steps).
The processing of each step shown in FIG. 5 is executed by the control unit 26 of the recording / reproducing apparatus Y according to a control program stored in advance in a ROM or the like. Moreover, each process of step S21-S31 shown in FIG. 5 is corresponded to each process of step S1-S11 shown in FIG. 2, respectively.
Further, the control unit 26 performs the processing of each step shown in FIG. 5, and the video processing unit 22 sends the ornamental video signal from the HDMI output unit 25 to the first external video display device X through the TMDS line 41. On the other hand, it is started during output.
In the second embodiment, it is assumed that the remote controller operated by the user is a remote controller included in the recording / playback apparatus Y. Therefore, the remote controller for the recording / playback device Y includes the OSD separation key, the first external video display device X, the second remote controller 8 and the remote controller 8 for the video display device X in the first embodiment. Volume adjustment key for adjusting the volume of each external video display device Z and whether the remote control object is the first external video display device X or the second external video display device Z A control destination switching key or the like for switching is provided.
Then, every time the control unit 26 in the recording / reproducing apparatus Y detects that the control destination switching key has been operated, the control target subsequent to the remote control operation is set as the first external video display device. It is switched between X and the second external video display device Z. In the second embodiment, the control target corresponding to the operation of the remote controller for the recording / playback apparatus Y is set on the first external video display apparatus X side by the control destination switching key. To do.

First, in Steps S21 to S23, the control unit 26 executes the same processing as Steps S1 to S3 by the control unit 6 of the video display device X.
Next, in step S24, the control unit 26 determines whether or not the second external video display device Z is operating through the CEC interface 23 and the CEC line 42 as in the process of step S4. Is detected (an example of the motion detection means).
If it is detected in step S24 that the second external video display device is not operating (No), the control unit 26 performs the CEC interface 23 and the CEC similarly to the processing in step S5. A start command is transmitted to the second external video display device Z through the line 42 (an example of the start command output means). As a result, the second external video display device Z is automatically activated. On the other hand, when it is detected in step S24 that the second external video display device Z is operating (Yes), the control unit 26 shifts the process to step S26.

In the next step S26 and step S27, the control unit 26 monitors the input information from the light receiving unit (not shown) in the same manner as the processing in steps S6 and S7, so that the remote controller of the recording / playback apparatus Y A process for detecting whether or not an operation that requires display of secondary information (the secondary information display operation) has been performed, and a process for detecting whether or not the OSD separation key has been operated. The process is repeated until either one is detected (S26, S27). When the control unit 26 detects that the secondary information display operation has been performed (Yes in S26), the control unit 26 shifts the processing to the next step S28 and confirms that the OSD separation key has been operated. If detected (Yes in S27), the process proceeds to step S30 described later. Note that, as the secondary information display operation in the second embodiment, for example, the following operations (e) to (h) can be considered.
(E) Operation of a volume adjustment key that requires display of volume adjustment information (volume level information). The volume adjustment information is information that the control unit 26 acquires from the first external video display device X. Specifically, when the control unit 26 detects the operation of the volume adjustment key, information on the operation (volume up or volume down) is sent to the first external video through the front microcomputer 29 and the CEC line 42. The volume adjustment information transmitted to the display device X and returned in response thereto is received (acquired) through the CEC line 42 and the front microcomputer 29. The control unit 6 of the first external video display device X receives the volume adjustment key operation information (volume up or volume down) via the CEC line 42, and the volume adjustment key of the remote control 8 is received. The volume adjustment process is executed in the same manner as when the above operation is detected, and the volume adjustment information (volume level information) is transmitted (response) to the recording / playback apparatus Y through the CEC line 42 as a result of the process.
(F) Operation of a program information key that requires display of program information such as a program title and a broadcast time zone corresponding to the viewing video currently being viewed (outputting to the first external video display device) . The program information is information that the control unit 26 extracts from the EPG information acquired from the video processing unit 22 or the recording / playback unit 27 and stored in the EEPROM, information corresponding to the video for viewing. It is.
(G) Display of channel identification information (an example of channel information) of a program corresponding to the viewing video currently being viewed, and information (such as the built-in tuner 21) of the source of the viewing video signal currently being output Channel display key operation that requires. The channel identification information and the supply source information are information stored in the EEPROM when the control unit 26 controls the tuner 21, the video processing unit 22, and the recording / playback unit 27.
(H) Operation of a counter key that requires display of information (e.g., information on a reproduction counter) related to the elapsed time after the start of reproduction and the remaining time until the end of reproduction on the reproduced video signal currently being viewed. The reproduction counter information is information that the control unit 26 acquires and sets from the recording / reproduction unit 27 and stores the information in an EEPROM provided in the control unit 26.
In step S28, the control unit 26 sets information corresponding to the secondary information display operation detected in step S26 (information shown in (e) to (h)) as the secondary information, The information is transmitted to the front microcomputer 29 as text information.

In the next step S29, the front microcomputer 29 sends the secondary information (text information) set in step S28 through the interface 23 and the CEC line 42 in accordance with the control command from the control unit 26. 2 to an external video display device.
On the other hand, if it is determined in step S22 that the secondary information display mode is the composite mode (No in S22), or if the operation of the OSD separation key is detected in step S27 (Yes in S27). , Processes similar to S10 and S11 described above are performed in S30 and S31.
As described above, in the AV system including the recording / playback device Y, the first video display device X, and the second video display device Z according to the second embodiment, the viewing is performed as in the first embodiment. The secondary information (corresponding to the information to be displayed) that needs to be displayed at the same time as the video for use is different from the first external video display device X that displays the video for viewing. The image is displayed on the second external video display device Z. As a result, the recording / playback apparatus Y can simultaneously display the secondary information video without causing a state in which the video for viewing is difficult to view (a state in which the beauty is impaired).
In the second embodiment described above, the secondary information is output to the second external video display device Z through the CEC line 42. However, as in the first embodiment, the second information is output to the second external video display device Z. It is also conceivable to output a video signal representing secondary information through the TMDS line 41. In this case, as in S8 and S9 of the first embodiment, in step S28, the secondary information video signal set by the control unit 26 is transmitted to the video processing unit 22. In the next step S29, the video processing unit 22 converts the secondary information video signal set in step S28 into the HDMI output unit 25 and the TMDS line 41 in accordance with a control command from the control unit 26. To the second external video display device. In this case, a large amount of information such as an electronic program guide can be displayed on the second external video display device, and a state in which the viewing video is difficult to view (a state in which the aesthetic appearance is impaired) is generated. It is also possible to make a recording reservation or the like using the electronic program guide displayed on the second external video display device Z.

1 is a block diagram showing a schematic configuration of an AV system in which a video display device X, a recording / playback device Y, and an external video display device Z according to a first embodiment of the present invention are connected. The flowchart which shows the procedure in which the video display apparatus X displays secondary information on an external video display apparatus. The figure showing an example of the display screen in 1st Embodiment of this invention. The block diagram showing the schematic structure of AV system containing the recording / reproducing apparatus Y which concerns on 2nd Embodiment of this invention. The flowchart which shows the procedure in which the recording / reproducing apparatus Y displays secondary information on a 2nd external video display apparatus.

Explanation of symbols

1, 2, 31 ... tuners 2, 22, 32 ... video processing unit 3 ... switching unit 4 ... synthesis processing unit 5, 35 ... video display unit 6, 26, 36 ... control unit 7 ... light receiving unit 8 ... remote control 9, 29 , 39 ... Front microcomputer 11 ... OSD generator 12 ... Memory 13, 23, 33 ... CEC interface (I / F)
14, 34 ... HDMI input section 15, 25 ... HDMI output section 27 ... Recording / playback section 41 ... TMDS line 42 ... CEC line

Claims (12)

A video display device comprising video display means for displaying video based on a video signal and communication means for communicating with an external video display device having a video display function,
An ornamental video signal output means for outputting an ornamental video signal for causing the video display means to display a predetermined video for viewing;
Display target information setting means for setting information to be displayed during output of the video signal for viewing by the video signal output means for viewing;
Display for displaying the information to be displayed on the external video display device by transmitting the information to be displayed set by the display target information setting means or a video signal representing the information through the communication means. Target information external output means,
A video display device comprising:   The video display device according to claim 1, wherein the display target information setting unit sets the information to be displayed corresponding to the detected operation when an operation on a predetermined operation unit is detected.   The information to be displayed includes broadcast channel information corresponding to the ornamental video signal, information about the supply source of the ornamental video signal, electronic program guide information, and volume information of an audio signal corresponding to the ornamental video signal. The video display device according to claim 2, wherein one or more of them are set as the information to be displayed. The communication means is a signal transmission means for performing signal transmission in conformity with the HDMI standard;
4. The video display according to claim 1, wherein the display target information external output means transmits the information to be displayed through a CEC line which is a signal transmission medium compliant with the CEC standard in the HDMI standard. apparatus. The communication means is a signal transmission means for performing signal transmission in conformity with the HDMI standard;
The video according to any one of claims 1 to 3, wherein the display target information external output means transmits a video signal representing information to be displayed through a TMDS line which is a signal transmission medium compliant with the HDMI standard. Display device. Operation detection means for detecting whether or not the external video display device is operating through the CEC line before execution of information transmission by the display target information external output means;
A start command output means for transmitting a start command to the external video display device through the CEC line when the operation detection means detects that the external video display device is not in operation;
The video display device according to claim 4, further comprising: A video processing apparatus comprising: a first external video display device each having a video display function; and a communication means for communicating with each of the second external video display devices,
An ornamental video signal output means for transmitting an ornamental video signal for displaying a predetermined video for viewing on the first external video display device through the communication means;
Display target information setting means for setting information to be displayed during output of the video signal for viewing by the video signal output means for viewing;
By transmitting the display target information set by the display target information setting means or a video signal representing the information through the communication means, the display target information is transmitted to the second external video display device. Display target information external output means to be displayed;
A video processing apparatus comprising:   8. The video processing apparatus according to claim 7, wherein the display target information setting unit sets the information to be displayed based on information obtained from the first external video display device through the communication unit.   The information to be displayed is one of information stored together with broadcast channel information and volume information corresponding to the ornamental video signal, and image data that is the source of the ornamental video signal in a predetermined information storage medium. The video processing apparatus according to claim 7, wherein a plurality of information is set as the information to be displayed. The communication means is a signal transmission means for performing signal transmission in conformity with the HDMI standard;
The ornamental video signal output means transmits the ornamental video signal through a TMDS line which is a signal transmission medium compliant with the HDMI standard;
The video processing apparatus according to claim 7, wherein the display target information external output unit transmits the information to be displayed through a CEC line which is a signal transmission medium compliant with the HDMI standard. The communication means is a signal transmission means for performing signal transmission in conformity with the HDMI standard;
The ornamental video signal output means and the display target information external output means transmit the ornamental video signal and the video signal representing the information to be displayed through the TMDS line which is a signal transmission medium compliant with the HDMI standard, respectively. The video processing apparatus according to any one of claims 7 to 9. Operation detecting means for detecting whether or not the second external video display device is operating through the CEC line before execution of information transmission by the display target information external output means;
Activation command output means for transmitting an activation command to the second external video display device through the CEC line when the operation detection means detects that the second external video display device is not in operation. When,
The video processing apparatus according to claim 10, further comprising:

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