JP2007150403A - Television set - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a television set which prevents negligence to turn off the power source of an external device without interfering appreciation of television video images or video images from the external device. <P>SOLUTION: The television set is provided with a display section 17, a control section 22 for controlling the display section 17, and input terminals 24a-24e for inputting external signals Sb from the external devices 100a-100e. The television set is configured so that the display section 17 can display video images based on the external signals Sb input from the input terminals 24a-24e. While the external signals Sb are being input when an operation for instruction of display stop processing of a video image is performed, the control section 22 causes the display section 17 to display a notification video image for reporting that the external signals Sb are input, for a predetermined time, prior to execution of the display stop processing. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a television configured to be able to display an image based on an external signal input from an input terminal on a display unit.

For example, when an external device such as a VTR is connected to a television and the power of the external device and the television is turned off in a usage mode in which video from the external device and television video (video from a TV tuner) are switched and displayed. In general, it is necessary to separately perform a power-off operation for both the operation units and the remote controller. In this case, for example, when the video of the external device is switched from the video of the external device to the TV video while the video signal is output from the external device, and then the TV is turned off, the video is displayed with the power of the external device turned on. In spite of the output of the signal, the user may not be aware of this and may be left in a state where the power is on. As means that can eliminate such inconvenience, a television receiver disclosed in Japanese Patent Laid-Open No. 2001-157135 is known. The television receiver includes a tuner, a signal detection unit, an MPU (Central Processing Unit), and the like. In this television receiver, when a signal from the VTR is input to the external input terminal while an on-air video from the tuner is displayed, the signal detection unit detects the input of the signal, and the MPU responds accordingly. For example, a character image indicating signal input is displayed in the OSD display mode. For this reason, it is possible to make the user recognize that a signal is being input to the external input terminal, that is, that the external device is powered on.
JP 2001-157135 A (pages 3-5, FIGS. 1 and 5)

  However, the above television receiver has the following problems. That is, in the above television receiver, when a signal is input to the external input terminal in a state where an on-air image is displayed, a character image indicating that is displayed. For this reason, this television receiver displays, for example, an on-air video in a usage mode in which an on-air video and a VTR video are switched and viewed while the signal from the VTR is input. However, since the character image is constantly displayed, there is a problem that the viewing of the on-air image is hindered. In this case, a method of displaying a character image for a predetermined time may be considered, but in this method, the character image was displayed when the TV receiver was turned off while watching the on-air image for a while. There is still a problem that the device itself is forgotten and left with the VTR powered on.

  The present invention has been made in view of such problems, and a main object of the present invention is to provide a television capable of preventing the external device from being forgotten to be turned off without disturbing the viewing of the television image or the image from the external device. .

  In order to achieve the above object, a television according to the present invention includes a display unit, a control unit that controls the display unit, and an input terminal that inputs an external signal from an external device, and inputs from the input terminal. The television is configured to be able to display a video based on the external signal on the display unit, and the control unit receives the external signal when an operation for instructing a video display stop process is performed. When the display is in progress, a notification video for notifying that the external signal is input is displayed on the display unit for a predetermined time prior to the execution of the display stop process.

  In this television, when an external signal is input at the time when an operation for instructing a video display stop process is performed, a notification video for informing that is displayed on the display unit for a predetermined time prior to the display stop process. Let For this reason, unlike conventional television receivers in which text images are constantly displayed while a signal from the external device is being input, a video for notification is displayed after the video from the tuner or external device that has finished watching is stopped. Can be displayed. Therefore, according to this television, it is indicated that the external signal from the external device is input at the time when the operation for instructing the display stop process is performed, that is, that the power of the external device is turned on at that time. As a result of reliably reporting without obstructing the viewing of the video, forgetting to turn off the external device can be reliably prevented.

  In the television according to the present invention, the notification video is configured to be able to identify the external device.

  In this television, the notification video is configured so that the external device can be specified. For this reason, even if a plurality of external devices are connected, it is possible to reliably and easily recognize which external device outputs an external signal, that is, which external device is powered on. .

  In the television according to the present invention, in the television described above, the notification video is configured by superimposing an image including one or more of characters, figures, and symbols on a background screen.

  In this television, an image for notification is configured by superimposing an image including one or more of characters, figures and symbols on a background screen. For this reason, the video from the tuner or the external device and the video for notification can be clearly distinguished by the user, so that the video for notification can be surely noticed by the user.

  Hereinafter, the best mode of a television according to the present invention will be described with reference to the accompanying drawings. A projection television (hereinafter also simply referred to as “TV”) 1 shown in FIG. 1 is an example of a television according to the present invention, and includes a main body 2 and a remote controller 3 as shown in FIG. . The main unit 2 includes a channel selection processing unit 11, a tuner 12, a preset information storage unit 13, a signal switching unit 14, a video / audio processing unit 15, a video output unit 16, a display unit 17, an audio output unit 18, a speaker 19, and a light receiving unit. 20a, a key input processing unit 20, a power supply unit 21, a control unit 22, and a RAM 23.

  The channel selection processing unit 11 causes the tuner 12 to select a predetermined channel under the control of the control unit 22 and extracts the broadcast signal Sa of that channel. As an example, the tuner 12 is configured to be able to receive BS digital broadcasting, 110-degree CS digital broadcasting, terrestrial digital broadcasting, and terrestrial analog broadcasting, and selects a predetermined channel under the control of the channel selection processing unit 11. The broadcast signal Sa of the channel is extracted from the broadcast wave received by the antenna not shown in the figure and output to the signal switching unit 14.

  The preset information storage unit 13 stores preset data Dc that associates channel designation keys 32a to 32l (see FIG. 2) of the remote controller 3 with channels (channel numbers) assigned to the channel designation keys 32a to 32l. Under the control of the control unit 22, the signal switching unit 14 inputs external devices 100 a to 100 e (hereinafter referred to as “input terminals 24” when not distinguished from each other) shown in FIG. When not distinguished, the external signal Sb from the “external device 100”) and the broadcast signal Sa extracted by the tuner 12 are switched and output. The video / audio processing unit 15 sends the video signal Dp and the audio signal Dv based on the broadcast signal Sa or the external signal Sb output from the signal switching unit 14 to the video output unit 16 and the audio output unit 18 according to the control of the control unit 22, respectively. Output.

  The video output unit 16 controls the video signal Dp output from the video / audio processing unit 15 according to the control of the control unit 22 as video P1 to P3 (see FIGS. 2, 4 and 5; hereinafter, also referred to as “video P” when not distinguished). ) And a video signal Sp for displaying the notification video Ps (see FIG. 6) is generated and output to the display unit 17. For example, the display unit 17 includes an optical engine and a screen panel (both not shown), and displays a video corresponding to the video signal Sp output from the video output unit 16. Specifically, the display unit 17 displays various images by optically modulating the projection light from the light source lamp based on the output video signal Sp and projecting the light onto the screen panel from the back side. In this case, the optical engine includes, for example, a light modulation element (for example, a digital micromirror device or a liquid crystal light valve) and a projection lens (both not shown). In addition, the light source lamp is configured by a metal halide lamp or a high-pressure mercury lamp, for example, and is turned on by a light source lamp driving pulse supplied from a light source lamp driving control unit to emit white projection light.

  The audio output unit 18 amplifies the audio signal Dv output from the video / audio processing unit 15 and outputs the amplified audio signal Sv to the speaker 19 according to the control of the control unit 22. The speaker 19 outputs audio based on the audio signal Sv output from the audio output unit 18. The “voice” in the present specification includes not only a human voice but also various “sounds” such as bird calls, wind sounds, and music. The light receiver 20a receives the infrared signal Si output from the remote controller 3 and outputs a demodulated signal Sd. The key input processing unit 20 outputs an operation signal So corresponding to the demodulated signal Sd output from the light receiving unit 20a (that is, corresponding to the operation key of the remote controller 3) to the control unit 22. The power supply unit 21 supplies power to each component of the television 1 under the control of the control unit 22.

  The control unit 22 controls the channel selection processing unit 11, the signal switching unit 14, the video / audio processing unit 15, the video output unit 16, the audio output unit 18, and the power supply unit 21 according to the operation signal So output from the key input processing unit 20. Control. In addition, the control unit 22 outputs the operation signal So corresponding to the power key 31 (see FIG. 2) of the remote controller 3 from the key input processing unit 20 in a state where the video P is displayed on the display unit 17 (this book). When the operation for instructing the display stop process in the invention is performed), the notification video display process 50 shown in FIG. 3 is executed. In this case, when the external signal Sb is input from the input terminal 24 at the time of execution of the notification video display processing 50, the control unit 22 specifies the input terminal 24 and generates the specific information Dm. The notification video Ps (see FIG. 6) is displayed based on the information Dm. The RAM 23 stores the specific information Dm according to the control of the control unit 22.

  The remote controller 3 corresponds to the operation unit in the present invention, and is formed separately from the main body unit 2 as shown in FIG. The remote controller 3 is configured by arranging various operation keys such as a power key 31, twelve channel designation keys 32a to 32l, and a signal switching key 33. When these operation keys are operated, The infrared signal Si corresponding to is output (transmitted).

  Next, the overall operation of the television 1 will be described with reference to the drawings. In this case, as shown in FIG. 1, a VTR as an example of the external device 100a is connected to the input terminal 24a, and an external tuner as an example of the external device 100c is connected to the input terminal 24c. To do. It is assumed that an external signal Sb is output from the external tuner. In the television 1, when the power key 31 of the remote control 3 shown in FIG. 2 is operated and the power is turned on, the control unit 22 controls the power supply unit 21 to supply power to the optical engine of the display unit 17, thereby The light source of the engine emits light. In addition, the control unit 22 controls the channel selection processing unit 11 to cause the tuner 12 to extract the broadcast signal Sa of the channel (for example, BS102 channel) that was selected when the power was turned off immediately before. Further, the control unit 22 controls the signal switching unit 14 to cause the video / audio processing unit 15 to output the broadcast signal Sa input from the tuner 12.

  The video / audio processing unit 15 outputs the video signal Dp and the audio signal Dv based on the broadcast signal Sa output from the signal switching unit 14 to the video output unit 16 and the audio output unit 18, respectively. Subsequently, the video output unit 16 converts the video signal Dp into a video signal Sp for displaying the video P and outputs the video signal Sp to the display unit 17. Next, the optical engine of the display unit 17 projects the projection light modulated based on the video signal Sp onto the screen panel. As a result, as shown in FIG. 2, the video image P1 of the BS102 channel is displayed. The audio output unit 18 amplifies the audio signal Dv output from the video / audio processing unit 15 and outputs the audio signal Sv to the speaker 19. The speaker 19 outputs BS102 channel audio based on the audio signal Sv. .

  Next, when viewing the video P and audio from the VTR as the external device 100a connected to the input terminal 24a shown in FIG. 1, the power of the VTR is turned on to start reproduction. Next, the signal switching key 33 of the remote controller 3 shown in FIG. 2 is operated. At this time, the remote controller 3 outputs an infrared signal Si corresponding to the signal switching key 33, and the light receiving unit 20a receives the infrared signal Si and outputs a demodulated signal Sd. Further, the key input processing unit 20 outputs an operation signal So corresponding to the demodulated signal Sd to the control unit 22. In response to this, the control unit 22 controls the signal switching unit 14 according to the operation signal So, and replaces the broadcast signal Sa from the tuner 12 with the external signal Sb from the VTR that is input via the input terminal 24a. And the video / audio processing unit 15 outputs it. Subsequently, the video / audio processing unit 15 outputs the video signal Dp and the audio signal Dv based on the external signal Sb output from the signal switching unit 14 to the video output unit 16 and the audio output unit 18, respectively. Next, the video output unit 16, the display unit 17, the audio output unit 18, and the speaker 19 operate in the same manner as described above, whereby the video P2 of the VTR is displayed and the audio of the VTR is displayed as shown in FIG. Is output.

  Next, for example, when the channel designation key 32b with the numeral “2” shown in FIG. 2 is operated, the remote controller 3 outputs an infrared signal Si corresponding to the channel designation key 32b, and a key input processing unit. 20 outputs an operation signal So to the control unit 22. In response to this, the control unit 22 specifies a channel (for example, BS103 channel) associated with the channel designation key 32b based on the preset data Dc stored in the preset information storage unit 13, and broadcast signals of the channel are specified. Sa is extracted by the tuner 12. Further, the control unit 22 controls the signal switching unit 14 to switch to the broadcast signal Sa from the tuner 12 instead of the external signal Sb from the VTR, and to output it to the video / audio processing unit 15. Next, the control unit 22 controls the video / audio processing unit 15 to send the video signal Dp and the audio signal Dv based on the broadcast signal Sa output from the signal switching unit 14 to the video output unit 16 and the audio output unit 18, respectively. Output. Next, the video output unit 16, the display unit 17, the audio output unit 18, and the speaker 19 operate in the same manner as described above, whereby the BS103 channel video P3 is displayed and the BS103 channel as shown in FIG. Is output.

  Next, when the viewing of the television 1 is finished and the television 1 is turned off (the display of the video P3 is stopped), the power key 31 of the remote controller 3 is operated. At this time, the remote controller 3 outputs an infrared signal Si corresponding to the power key 31, and the key input processing unit 20 outputs an operation signal So to the control unit 22. In response to this, the control unit 22 executes the notification video display process 50 shown in FIG. In the notification video display processing 50, the control unit 22 erases the specific information Dm stored in the RAM 23 and initializes the RAM 23 (step 51). Next, the control unit 22 connects to one of the input terminals 24a to 24e (for example, the input terminal 24a) via the signal switching unit 14 (step 52), and the external signal Sb is input from the input terminal 24. It is checked whether or not it has been done (step 53). In this case, when the external signal Sb is input from the input terminal 24, the control unit 22 generates specific information Dm that can specify the input terminal 24 and stores it in the RAM 23 (step 54). When the external signal Sb is not input from 24, the next step is executed without executing step 54.

  Subsequently, the control unit 22 determines whether or not the above check has been completed for all the input terminals 24 (step 55). In this case, since the control unit 22 has not completed the check for all the input terminals 24, the control unit 22 is connected to the next input terminal 24 (for example, the input terminal 24b) (step 56), and steps 53 to 55 (or Steps 53 and 55) are executed. Next, the control unit 22 repeatedly executes Steps 53 to 55 (or Steps 53 and 55) until the above check for all the input terminals 24 is completed. In this case, for example, when the external signal Sb is input to the input terminal 24a and the input terminal 24c, that is, from the VTR connected to the input terminal 24a and the external tuner connected to the input terminal 24c. Is output, the RAM 23 stores specific information Dm for specifying the input terminal 24a and specific information Dm for specifying the input terminal 24c.

  Next, when it is determined in step 55 that the checks for all the input terminals 24 have been completed, the control unit 22 determines whether or not the specific information Dm is stored in the RAM 23 (step 57). In this case, as described above, the specific information Dm for specifying the input terminals 24 a and 24 c is stored in the RAM 23. For this reason, the control unit 22 specifies the input terminals 24a and 24c based on each specification information Dm and controls the video output unit 16 to thereby control the external device 100 connected to the input terminals 24a and 24c (this In this case, the video signal for displaying the notification video Ps in which the character image Pc for notifying that the power of the external devices 100a and 100c) is turned on is superimposed on the dark background video (for example, blue background) Pb, for example. Sp is output. In this case, the character image Pc includes a character string that can identify the external devices 100a and 100c, specifically, for example, “VTR” associated with the input terminals 24a and 24c to which the external devices 100a and 100c are connected. And the string "External tuner".

  Next, the display unit 17 operates in the same manner as described above, thereby notifying that the power of the external devices 100a and 100c is turned on instead of the video image P3 of the BS 103 channel as shown in FIG. The notification video Ps is displayed on the display unit 17 (step 58). In this case, since the notification video Ps is displayed after the display of the video P is stopped by operating the power key 31, a conventional television in which character video is continuously displayed while a signal from the external device is input. Unlike the receiver, the external signal Sb from the external device 100 is input without interfering with the viewing of the video P, that is, the external device 100 is turned on. Forgetting to turn off the power of the apparatus 100 is reliably prevented. In addition, since the notification video Ps in which the character image Pc is superimposed on the dark background screen Pb is displayed, the notification video Ps can be surely noticed by the user. Subsequently, the control unit 22 controls the video output unit 16 to output the video signal Sp for the notification video Ps when the notification video Ps is displayed for a predetermined time t (3 seconds as an example). At the same time, the power supply unit 21 is controlled to stop the supply of power to the optical engine of the display unit 17 (display stop process in the present invention) (step 59), and the notification video display process 50 ends. As a result, the display of the notification video Ps is stopped, and the display unit 17 is not displayed.

  On the other hand, in step 57, when the specific information Dm is not stored in the RAM 23, that is, when the external signal Sb is not input from the input terminal 24, the control unit 22 controls the channel selection processing unit 11 and described above. The output of the BS 103 channel broadcast signal Sa from the tuner 12 is stopped, and the power supply unit 21 is controlled to stop the supply of power to the optical engine of the display unit 17 (step 59). Exit.

  Thus, according to this television 1, when the external signal Sb is input at the time when the power key 31 of the remote controller 3 is operated, the control unit 22 displays the notification video Ps that notifies that fact. Unlike the conventional television receiver in which the character image is continuously displayed while the signal from the external device is input by displaying the time t on the display unit 17 prior to the stop processing, the video P that has been viewed is ended. The notification video Ps can be displayed after the display is stopped. Therefore, according to the television 1, the video P indicates that the external signal Sb from the external device 100 is input when the power key 31 is operated, that is, that the power of the external device 100 is turned on at that time. As a result, the user can be surely prevented from forgetting to turn off the power of the external device 100.

  Further, according to the television 1, since the notification video Ps is configured so that the external device 100 can be specified, which external device 100 outputs the external signal Sb even if a plurality of external devices 100 are connected. That is, that is, which external device 100 is powered on can be recognized reliably and easily.

  Further, according to the television 1, the notification image Ps is configured by superimposing the character image Pc including the character string that can specify the external device 100 outputting the external signal Sb on the background screen Pb. Since the notification video Ps and the video P can be clearly distinguished by the user, the notification video Ps can be surely noticed by the user.

  In addition, this invention is not limited to said structure. For example, the example applied to the projection television 1 including the display unit 17 having the optical engine and the screen panel has been described above. However, the present invention is applied to a television including a display unit composed of a CRT, a liquid crystal display panel, a plasma display, and the like. It can also be applied. In addition, the notification video Ps formed by superimposing the character image Pc on the background screen Pb has been described as an example, but the configuration and display form of the notification video Ps are not limited thereto. For example, the character image Pc can be displayed in the image P in the OSD (On Screen Display), and the image P and the character image Pc can be displayed in PIP (Picture In Picture) or in two screens. Furthermore, it is also possible to configure the notification video Ps for notifying that the external signal Sb is being input, using a figure or a symbol instead of the character or together with the character. Further, the example in which the notification video Ps is displayed only for a predetermined time t has been described above, but a configuration in which the time t can be arbitrarily set may be employed.

1 is a block diagram illustrating a configuration of a projection television 1. FIG. 1 is a front view of a projection television 1. FIG. 5 is a flowchart of notification video display processing 50. It is a display screen figure of the image | video P2. It is a display screen figure of the image | video P3. It is a display screen figure of video Ps for information.

Explanation of symbols

  1 projection television, 17 display unit, 22 control unit, 100a to 100e external device, P1 to P3 video, Pb background screen, Pc character image, Ps notification video, Sb external signal, t time

Claims (3)

A display unit, a control unit for controlling the display unit, and an input terminal for inputting an external signal from an external device, and displaying an image based on the external signal input from the input terminal on the display unit A TV configured to be possible,
When the external signal is input at the time when an operation for instructing a video display stop process is performed, the control unit stops displaying the notification video for notifying that the external signal is input. A television that displays on the display unit for a predetermined time prior to execution of processing.   The television according to claim 1, wherein the notification video is configured to be able to identify the external device.   The television according to claim 1 or 2, wherein the notification video is configured by superimposing an image including one or more of characters, figures and symbols on a background screen.

Images