JP2007116311A - Receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To change an audio output mode in response to operations of various operation sections having no exclusive key for changing the audio output mode. <P>SOLUTION: This receiver is provided with a receiving section for receiving a video audio signal; a video audio processor for generating a video signal based on the video audio signal to output the generated signal to a display device, and generating an audio signal based on the video audio signal to output the generated signal to an audio output device; and a control unit for causing a receiver to receive the video audio signal of a designated channel, causing the video audio processor to generate the video signal and the audio signal, and controlling the video audio processor to change the audio output mode of the audio signal to be generated based on the video audio signal. In a state where the video audio signal capable of selecting an arbitrary audio output mode from a plurality of kinds of audio output modes is being received, when the channel same as the above channel is designated by an operation of a channel designating key (step S31), the control unit changes the audio output mode (step S38). <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a receiving apparatus configured to generate an audio signal in a selected audio output mode and output it to an audio output apparatus.

As this type of receiving apparatus, Japanese Patent Application Laid-Open No. 2004-15486 discloses a broadcast receiving apparatus configured to be able to change an audio output mode by remote control operation when receiving an audio multiplex broadcast. In this broadcast receiving apparatus, for example, when an audio key of a remote control transmitter is operated during reception of a digital broadcast, the CPU displays the current audio output mode (for example, a character string “MAIN”) on the display screen. To do. When the audio key is operated again within 3 seconds from the operation of the audio key, the CPU changes the audio output mode to the next mode and replaces the main audio (MAIN) with the sub audio (SUB-1). And the changed voice output mode (in this example, a character string “SUB-1”) is displayed on the display screen. Further, when the enter key is operated within 3 seconds from the second audio key operation, the CPU memorizes the audio output mode at the time of the enter key operation as a steady audio output mode for the channel. Remember. Thus, for example, when viewing the channel when the power is turned on again, it is possible to immediately output the secondary sound without operating the audio key.
Japanese Patent Laying-Open No. 2004-15486 (page 3-6, FIG. 1-6)

  However, the conventional broadcast receiving apparatus has the following problems. That is, this broadcast receiving apparatus employs a configuration in which the audio output mode is changed by operating an audio key in a remote control transmitter. In this case, today, not only a dedicated remote controller attached to a receiving device (TV or the like), but also a remote controller attached to an external device such as a DVD recorder or a general-purpose remote controller capable of remotely controlling various TVs of different manufacturers. The usage form in which the receiving device is remotely operated is generally used. However, many remote controllers attached to external devices and general-purpose remote controllers do not have a dedicated key (“audio key” in the above example) for changing the audio output mode. Therefore, in the conventional broadcast receiving apparatus configured to change the audio output mode by operating the audio key, the audio output mode is controlled by various remote controllers (remote controller attached to the external apparatus or general-purpose remote controller) that do not have a dedicated key. There is a problem that cannot be changed.

  The present invention has been made in view of such a problem, and provides a receiving apparatus that can change the sound output mode in accordance with operations of various operation units that do not have a dedicated key for changing the sound output mode. The main purpose.

  In order to achieve the above object, a receiving apparatus according to the present invention includes a receiving unit that receives a video / audio signal, generates a video signal based on the video / audio signal, outputs the video signal to a display device, and based on the video / audio signal. A video / audio processing unit that generates an audio signal and outputs the audio signal to an audio output device; and the reception unit receives the video / audio signal of a designated channel, and the video / audio processing unit receives the video signal and the audio signal. And a control unit that controls the video / audio processing unit to change the audio output mode of the audio signal that is generated based on the video / audio signal, and arbitrarily selects one of the plurality of audio output modes. In a state where the audio / video signal capable of selecting the audio output mode is received by the receiving unit, the same channel as the received channel is set to the channel. Wherein the control unit is to change the audio output mode when it is designated by the operation of the channel specified key. The “voice” in the present specification includes not only a human voice but also various “sounds” such as bird calls, wind sounds, and music.

  According to this receiving apparatus, the same channel as the channel being received in a state where the audio / video signal capable of selecting an arbitrary audio output mode from among a plurality of audio output modes is received by the receiving unit is the channel designation key. When the control unit controls the video / audio processing unit to change the audio output mode when designated by the operation of, it is arranged in a general remote control such as a remote control attached to the external device or a general-purpose remote control. The desired audio output mode can be changed by operating the channel designation key. Therefore, a desired type of sound can be output by operating various operation units that do not have a dedicated key for changing the sound output mode.

  The receiving device according to the present invention includes a receiving unit that receives a video / audio signal, generates a video signal based on the video / audio signal, outputs the video signal to a display device, and generates an audio signal based on the video / audio signal. The video / audio processing unit for outputting to the audio output device, the video / audio signal of the designated channel received by the reception unit, the video / audio processing unit generating the video signal and the audio signal, and the video A control unit that controls an audio processing unit to change an audio output mode of the audio signal generated based on the video and audio signal, and selects an arbitrary audio output mode from a plurality of types of the audio output modes. Either the channel up key or the channel down key is operated while the selectable video / audio signal is received by the receiving unit. Wherein the control unit is to change the audio output mode when.

  According to this receiving apparatus, any one of the channel up key and the channel down key is operated in a state where a video / audio signal capable of selecting an arbitrary audio output mode from a plurality of types of audio output modes is received by the receiving unit. When the control unit controls the video / audio processing unit to change the audio output mode, a channel up key provided on a general remote controller such as a remote controller attached to the external device or a general-purpose remote controller and The desired audio output mode can be changed by operating the channel down key. Therefore, it is possible to output various types of operation units (a desired type of sound can be output by an example) that does not have a dedicated key for changing the sound output mode.

  Furthermore, in the receiving apparatus according to the present invention, when one of the channel up key and the channel down key is operated in a state where the channel switching condition is satisfied, the control unit responds to the operation of any one of the keys. The video / audio signal of another channel is received by the receiving unit.

  According to this receiving device, when either the channel up key or the channel down key is operated in a state where the channel switching condition is satisfied, the control unit causes the receiving unit to receive the video / audio signal of the other channel, thereby Not only can the desired sound be output by operating various operation units that do not have a dedicated key for changing the output mode, but the original function assigned to the channel up key and the channel down key can be used to select the desired channel. Switching operation can be performed.

  The receiving device according to the present invention includes a receiving unit that receives a video / audio signal, generates a video signal based on the video / audio signal, outputs the video signal to a display device, and generates an audio signal based on the video / audio signal. The video / audio processing unit for outputting to the audio output device, the video / audio signal of the designated channel received by the reception unit, the video / audio processing unit generating the video signal and the audio signal, and the video A control unit that controls an audio processing unit to change an audio output mode of the audio signal generated based on the video and audio signal, and selects an arbitrary audio output mode from a plurality of types of the audio output modes. A channel designation key, a channel up key, and a channel down key in a state where the selectable video / audio signal is received by the receiving unit. Either said controller when the cursor key is operated within a predetermined time after being operated to change the audio output mode.

  According to this receiving apparatus, the channel designation key, the channel up key, and the channel down key can be selected in a state in which a video / audio signal capable of selecting an arbitrary audio output mode from a plurality of types of audio output modes is received by the receiving unit. When the cursor key is operated within a predetermined time after any of them is operated, the control unit controls the audio / video processing unit to change the audio output mode, so that a remote controller attached to the external device, a general-purpose remote controller, etc. The voice output mode can be changed by operating a channel up key, a channel down key, a channel designation key, and a cursor key arranged in a general remote controller. Therefore, a desired sound can be output by operating various operation units that do not have a dedicated key for changing the sound output mode.

  Furthermore, in the receiving apparatus according to the present invention, when the audio output mode is changed, the control unit changes the plurality of types of the audio output modes according to a predetermined order.

  According to this receiving apparatus, when changing the audio output mode, for example, the control unit changes the audio output mode in accordance with a predetermined order, so that, for example, the audio output mode is changed randomly. The voice output mode can be switched after recognizing in advance which type of voice output mode is to be switched by operating the channel designation key. Therefore, it is possible to switch to a desired type of audio output mode with few key operations.

  The receiving apparatus according to the present invention is configured to be able to set the predetermined order.

  According to this receiving apparatus, since the order in which the audio output mode is changed can be set, the audio output mode that is frequently selected during viewing can be set in advance so that it can be selected at an early stage. This type of voice can be easily output with few key operations.

  Furthermore, the receiving apparatus according to the present invention is configured such that in the above-described receiving apparatus, an audio output mode allowing the change can be set.

  According to this receiving apparatus, since it is possible to set an audio output mode that allows change, even if there are a large number of selectable audio output modes, a desired audio output mode can be easily specified with few key operations. be able to.

  The best mode of a receiving apparatus according to the present invention will be described below with reference to the accompanying drawings. A projection television (hereinafter also referred to as a “television”) 1 shown in FIG. 1 is an example of a device in which a receiving device and a display device (rear projector) according to the present invention are integrally formed. 3. The main unit 2 includes an operation unit 11, a light receiving unit 12, a key input processing unit 13, a tuner 14, a channel selection processing unit 15, a video / audio processing unit 16, an audio processing unit 17, an audio output mode storage unit 18, and an audio output. A unit 19, a speaker 20, a video output unit 21, a display unit 22, and a main control unit 23 are configured. As will be described later, the television 1 includes not only a dedicated remote controller 3 attached to the television 1 but also a remote controller 4 attached to an external device (DVD player, DVD recorder, VCR, etc.) and various types of manufacturers that are different. Remote control using a general-purpose remote controller (not shown) that can remotely control the TV of the TV. In this case, as an example, the remote controller 4 uses the television 1 as a remote-controllable key, channel designation keys (for example, 10 keys “0” to “9”: direct channel key), channel up key, channel Various keys (not shown) such as a down key, a cursor key, an enter key, a cancel key, and a power key are provided so that an operation signal S1 (optical signal) corresponding to each key can be output. .

  On the other hand, for example, the operation unit 11 is provided with various keys (not shown) such as a channel up key, a channel down key, a volume up key, and a volume down key, and receives an operation signal S2 corresponding to each key. It is configured to allow output. The light receiving unit 12 receives the operation signal S1 output from the remote controllers 3 and 4 to generate the operation signal S2, and outputs the generated operation signal S2 to the key input processing unit 13. The key input processing unit 13 outputs a control signal S3 (information that can specify the operation content of each key) corresponding to the operation signal S2 output from the operation unit 11 and the light receiving unit 12 to the main control unit 23. The tuner 14 corresponds to a receiving unit in the present invention, receives a broadcast signal S of a designated channel (an example of a video / audio signal in the present invention) with an antenna outside the figure, and generates a video / audio signal Sav. The video / audio signal Sav is output to the video / audio processing unit 16. In this case, as an example, the tuner 14 is configured to receive various broadcast signals S such as BS digital broadcast, 110-degree CS digital broadcast, terrestrial digital broadcast, and terrestrial analog broadcast. Under the control of the main control unit 23, the channel selection processing unit 15 selects the channel specified by the key operation of the channel up key and the channel down key on the remote control 3, 4 or the operation unit 11 or the channel designation key on the remote control 3, 4. The broadcast signal S is received by the tuner 14 (channel switching is controlled).

  The video / audio processing unit 16 extracts the audio signals Sa1, Sa2 included in the video / audio signal Sav (generates the audio signals Sa1, Sa2 based on the video / audio signal Sav) and outputs the audio signals Sa1, Sa2 to the audio processing unit 17. . In this case, as an example, the audio signal Sa1 is composed of an audio signal for main audio in audio multiplex broadcasting, and the audio signal Sa2 is composed of an audio signal for sub audio in audio multiplex broadcasting. Also, the video / audio processing unit 16 extracts the video signal Sv included in the video / audio signal Sav (generates the video signal Sv based on the video / audio signal Sav) and outputs the video signal Sv to the video output unit 21. In this case, the video signal Sv corresponds to the video signal in the present invention. The audio processing unit 17 generates any one of the audio signals Sa11 to Sa13 on the basis of the audio signals Sa1 and Sa2 output from the video / audio processing unit 16 according to the control of the main control unit 23 and supplies the audio output unit 19 with the audio signal Sa11 to Sa13. Output. In this case, in the television 1, the video / audio processing unit 16 and the audio processing unit 17 constitute the video / audio processing unit according to the present invention.

  In the television 1, the audio signals Sa11 to Sa13 output from the audio processing unit 17 correspond to the audio signals in the present invention. In this case, the audio signal Sa11 is composed of an audio signal capable of outputting only the main audio based on the audio signal Sa1, and the audio signal Sa12 is composed of an audio signal capable of outputting only the sub audio based on the audio signal Sa2. The audio signal Sa13 is composed of an audio signal that can simultaneously output the main audio based on the audio signal Sa1 and the sub audio based on the audio signal Sa2. In the following description, the audio output mode for outputting only the main audio based on the audio signal Sa11 is set as mode 1, the audio output mode for outputting only the sub audio based on the audio signal Sa12 is set as mode 2, and the audio signal is output. A sound output mode for outputting both the main sound and the sub sound based on Sa13 is referred to as mode 3. The audio output mode storage unit 18 stores information about an audio output mode for each channel that can be received by the tuner 14 (a flag that can specify an audio output mode for each channel). In this case, when the sound output mode of the sound to be output for a predetermined channel is mode 1, the flag in the sound output mode storage unit 18 is “1”, and when it is mode 2, the flag is “2”. In this case, the flag is “3”.

  The audio output unit 19 generates an audio signal Sa based on the audio signals Sa11 to Sa13 output from the audio processing unit 17, and outputs the generated audio signal Sa to the speaker 20. The speaker 20 outputs a sound based on the sound signal Sa output from the sound output unit 19. In the television 1, the audio output device 19 and the speaker 20 constitute an audio output device according to the present invention. The video output unit 21 generates a display video signal Svo based on the video signal Sv output from the video / audio processing unit 16, and outputs the generated video signal Svo to the display unit 22. For example, the display unit 22 includes an optical engine, a screen panel, and the like (not shown), and displays a video corresponding to the video signal Svo output from the video output unit 21. Specifically, the display unit 22 displays various images by optically modulating the projection light from the light source lamp based on the output video signal Svo and projecting it from the back side on the screen panel. 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. In the television 1, the video output unit 21 and the display unit 22 constitute a display device according to the present invention.

  The main control unit 23 corresponds to the control unit in the present invention, and comprehensively controls each unit of the television 1. Moreover, the main control part 23 performs the change process 30 shown in FIG. 2, and changes audio | voice output mode so that it may mention later. In the television 1, the receiving device according to the present invention is configured by the constituent elements other than the audio output unit 19, the speaker 20, the video output unit 21, and the display unit 22.

  Next, the overall operation of the television 1 will be described with reference to the drawings. In the television 1, for example, when the power key of the remote controller 4 is operated, the operation signal S 2 corresponding to the operation signal S 1 is output to the key input processing unit 13 by the light receiving unit 12 that receives the operation signal S 1 output from the remote controller 4. Is done. In response to this, the key input processing unit 13 outputs a control signal S3 corresponding to the operation signal S2 to the main control unit 23. At this time, the main control unit 23 controls the channel selection processing unit 15 to cause the tuner 14 to receive the broadcast signal S of the channel that was selected when the power was turned off. In response to this, the video / audio processing unit 16 generates audio signals Sa1 and Sa2 based on the video / audio signal Sav output from the tuner 14 and outputs them to the audio processing unit 17, and also generates the video signal Sv to generate video. Output to the output unit 21.

  At this time, the main control unit 23 controls the audio processing unit 17 to generate an audio signal to be output to the audio output unit 19 based on which of the audio signals Sa1 and Sa2 (in any audio output mode). Whether to output sound) is determined based on information (flag) about the sound output mode stored in the sound output mode storage unit 18. Specifically, for example, when the flag for the channel on which the broadcast signal S is received by the tuner 14 is “1”, the audio processing unit 17 performs the audio based on the audio signal Sa1 according to the control of the main control unit 23. A signal Sa11 is generated and output to the audio output unit 19. Thereby, the audio signal Sa based on the audio signal Sa11 is generated by the audio output unit 19, and the audio based on the audio signal Sa (the main audio corresponding to the audio signal Sa1) is output from the speaker 20. The video output unit 21 generates a video signal Svo based on the video signal Sv output from the video / audio processing unit 16 and outputs the video signal Svo to the display unit 22. As a result, a video corresponding to the video signal Svo is displayed on the screen panel of the display unit 22.

  On the other hand, when the control signal S3 instructing to turn on the power is output from the key input processing unit 13, the main control unit 23 controls the power supply unit (not shown) to supply power to each unit of the television 1, and thereafter The control signal S3 output from the key input processing unit 13 is monitored. When it is determined that the channel designation key has been operated based on the control signal S3 output from the key input processing unit 13, the main control unit 23 starts the changing process 30 shown in FIG. In the change process 30, the main control unit 23 first determines whether or not the channel designated by the operation of the channel designation key is the same channel as the channel (viewing channel) received by the tuner 14. (Step 31).

  At this time, if it is determined that a different channel is designated, the main control unit 23 controls the channel selection processing unit 15 to cause the tuner 14 to receive the broadcast signal S of the designated channel (channel switching: Step 32). The main control unit 23 controls the audio processing unit 17 to reset the flag in the audio output mode storage unit 18 for the channel after switching to “1”, thereby resetting the flag (step 33). It is determined whether or not the broadcast signal S received by the tuner 14 is an audio multiplex broadcast (step 34). At this time, when it is not the audio multiplex broadcast, the main control unit 23 ends the change process 30. In the case of audio multiplex broadcasting, an audio signal corresponding to information (flag) about the audio output mode stored in the audio output mode storage unit 18 by controlling the audio processing unit 17 (in this example, the mode 1 is set). A corresponding audio signal Sa11) is generated (change of the audio output mode: step 35), and the change process 30 is terminated.

  On the other hand, when the main control unit 23 determines that the designated channel is the same channel as the channel (the channel being viewed) received by the tuner 14 (step 31), the broadcast signal S of that channel is It is determined whether or not the audio multiplex broadcasting is performed (step 36). At this time, if the main control unit 23 determines that it is not an audio multiplex broadcast, the main control unit 23 ends the change process 30, and if it is determined that the audio multiplex broadcast is selected, it controls the audio processing unit 17 to store the audio output mode. The flag in the unit 18 is counted up (flag change: step 37). In this case, when the flag after counting up is “4”, the main control unit 23 changes the flag from “4” to “1”. Specifically, when the flag for the channel in which the video / audio signal Sav is received by the tuner 14 is “1” when it is determined that the audio multiplex broadcast is performed, the audio processing unit 17 is controlled according to the control of the main control unit 23. Rewrites the flag in the audio output mode storage unit 18 to “2” and determines that the flag after counting up is not “4” and proceeds to the next process. Next, the main control unit 23 controls the audio processing unit 17 to correspond to the audio signal (corresponding to mode 2) corresponding to the flag (in this example, flag = “2”) stored in the audio output mode storage unit 18. The audio signal Sa12) is generated (change of the audio output mode: step 38), and the changing process 30 is ended. As a result, the audio signal Sa12 generated by the audio processing unit 17 is output to the audio output unit 19, and the sub audio is output from the speaker 20.

  When the main control unit 23 determines that the channel designation key for designating the same channel as the channel received by the tuner 14 has been operated again (step 31), the broadcast signal S of the channel is transmitted by audio multiplex broadcasting. It is discriminated that there is (step 36), and the sound processing unit 17 is controlled to increment the flag in the sound output mode storage unit 18 (step 37). At this time, the sound processing unit 17 rewrites the flag in the sound output mode storage unit 18 to “3” according to the control of the main control unit 23. Next, the main control unit 23 controls the audio processing unit 17 to correspond to the audio signal (corresponding to mode 3) corresponding to the flag (in this example, flag = “3”) stored in the audio output mode storage unit 18. The audio signal Sa13) is generated (step 38), and the changing process 30 is terminated. As a result, the audio signal Sa13 generated by the audio processing unit 17 is output to the audio output unit 19, and the main audio and sub audio are output from the speaker 20.

  Thereafter, when the same channel designation key is operated again, the main control unit 23 controls the audio processing unit 17 to count the flag in the audio output mode storage unit 18 from “3” to “4”. After the count-up, it is determined that the flag after the count-up is “4”, and the flag is changed from “4” to “1” (step 37). Next, the main control unit 23 controls the audio processing unit 17 to change the audio output mode from “mode 3” to “mode 1”. In addition, each time the same channel designation key is operated thereafter, the main control unit 23 sequentially switches the audio output mode of the television 1 in the order of mode 2 and mode 3 and then switches to “mode 1” again. Thus, in this television 1, every time the same channel designation key is operated, the audio output mode is cyclically switched by the main control unit 23 in the order of “mode 1” to “mode 3”. Although the example when the channel designation key of the remote controller 4 is operated has been described, in this television 1, the channel designation key of the remote controller 3, the channel designation keys of various remote controllers other than the remote controllers 3 and 4, or When the key of the operation unit 11 is operated, the sound output mode is changed in the same manner as in the above example.

  As described above, according to the television 1, the same channel as the channel that is received in a state where the tuner 14 receives the broadcast signal S that can select an arbitrary audio output mode from among a plurality of types of audio output modes. Is designated by the operation of the channel designation key, the main control unit 23 controls the video / audio processing unit (the video / audio processing unit 16 and the audio processing unit 17) to change the audio output mode, thereby attaching to the external device. The desired audio output mode can be changed by operating a channel designation key provided on a general remote controller such as a remote controller or a general-purpose remote controller. Therefore, a desired type of sound can be output by operating various operation units (for example, the remote controller 4 attached to the external device) that do not have a dedicated key for changing the sound output mode.

  Further, according to the television 1, when the audio output mode is changed, the main control unit 23 changes the audio output mode to a predetermined audio output mode according to a predetermined order from among a plurality of types of audio output modes. Unlike the configuration in which the audio output mode is changed randomly, the audio output mode can be switched after recognizing in advance what type of audio output mode is to be switched by operating the channel designation key. Therefore, it is possible to switch to a desired type of audio output mode with few key operations.

  In addition, this invention is not limited to said structure. For example, although the configuration in which the audio output mode is changed by operating the channel designation key has been described, a configuration in which the audio output mode is changed by operating either the channel up key or the channel down key may be employed. In the television 1 configured as described above, the main control unit 23 executes the change process 40A shown in FIG. 3 when the key input processing unit 13 outputs the control signal S3 corresponding to the operation of the channel up key, When the control signal S3 corresponding to the operation of the channel down key is output from the input processing unit 13, the change process 40B shown in FIG. 4 is executed.

  At this time, for example, when the channel up key of the remote controller 4 is operated and the corresponding control signal S3 is output, the main control unit 23 starts the change process 40A and receives the channel (viewing) It is determined whether or not the broadcast signal S of the channel is a sound multiplex broadcast (step 41). In this case, when it is not an audio multiplex broadcast (an example of a state where the “channel switching condition” in the present invention is satisfied), the main control unit 23 controls the channel selection processing unit 15 to send the broadcast signal S to the tuner 14. Are switched in ascending order (step 42), and the flag is reset by controlling the audio processing unit 17 to rewrite the flag in the audio output mode storage unit 18 to "1" (step 43). Next, the main control unit 23 determines whether or not the broadcast signal S received by the tuner 14 after channel switching is an audio multiplex broadcast (step 44). finish. When it is determined that the broadcast is an audio multiplex broadcast, the main control unit 23 controls the audio processing unit 17 and the audio corresponding to the information (flag) about the audio output mode stored in the audio output mode storage unit 18. A signal (for example, an audio signal Sa11 corresponding to mode 1) is generated (change of the audio output mode: step 45), and the change process 40A is terminated.

  On the other hand, when the main control unit 23 determines that the broadcast signal S of the channel (the channel being viewed) received by the tuner 14 at the time of operating the channel up key is an audio multiplex broadcast (step 41), The processing unit 17 is controlled to increment the flag in the audio output mode storage unit 18 (flag change: step 46). In this case, when the flag after counting up is “4”, the main control unit 23 changes the flag from “4” to “1”. Specifically, when the flag for the channel in which the video / audio signal Sav is received by the tuner 14 is “1”, the audio processing unit 17 is in the audio output mode storage unit 18 according to the control of the main control unit 23. While rewriting the flag to “2”, it is determined that the flag after the count-up is not “4”, and the process proceeds to the next process. Next, the main control unit 23 determines whether or not the flag in the audio output mode storage unit 18 is “1” (step 47), and when determining that the flag is not “1”, the audio processing unit 17 To generate an audio signal (audio signal Sa12 corresponding to mode 2) corresponding to the flag (in this example, flag = “2”) stored in the audio output mode storage unit 18 (audio output mode). Change: Step 48), the change process 40A is terminated. As a result, the audio signal Sa12 generated by the audio processing unit 17 is output to the audio output unit 19, and the sub audio is output from the speaker 20.

  When the channel up key is operated again, the main control unit 23 determines that the broadcast signal S of the channel being viewed is an audio multiplex broadcast (step 41), and controls the audio processing unit 17 to output audio. The flag in the mode storage unit 18 is counted up (step 46). At this time, the flag for the channel is rewritten to “3”. Next, the main control unit 23 determines that the flag in the audio output mode storage unit 18 is not “1” (step 47), and controls the audio processing unit 17 to be stored in the audio output mode storage unit 18. An audio signal (audio signal Sa13 corresponding to mode 3) corresponding to the flag (flag = “3” in this example) is generated (change of audio output mode: step 48). As a result, the audio signal Sa13 generated by the audio processing unit 17 is output to the audio output unit 19, and the main audio and sub audio are output from the speaker 20.

  Further, when the channel up key is operated again, the main control unit 23 determines that the broadcast signal S of the channel being viewed is an audio multiplex broadcast (step 41), and controls the audio processing unit 17 to output audio. The flag in the mode storage unit 18 is counted up (step 46). In this case, the flag for the channel is counted up from “3” to “4” and then rewritten to “1”. Next, the main control unit 23 determines that the flag in the audio output mode storage unit 18 is “1” (another example of the state in which the “channel switching condition” in the present invention is satisfied: step 47), and selects it. The station processing unit 15 is controlled to switch the channel in which the tuner 14 receives the broadcast signal S in ascending order (step 42). In this way, by operating the channel up key while operating the audio multiplex broadcast television program in mode 1 to switch to modes 2 and 3 in sequence, the channel up key is further operated to move to the next channel. Can be switched.

  On the other hand, when the channel down key is operated, the main control unit 23 starts the change process 40B shown in FIG. In the change process 40B, unlike the change process 40A, the flag in the audio output mode storage unit 18 is counted down in step 46, and the channel for causing the tuner 14 to receive the broadcast signal S in step 42 is in descending order. Switch with. In this case, when the flag after the countdown is “0” in step 46, the main control unit 23 changes the flag from “0” to “3”. Note that, for each of the other steps in the change process 40B, the same process as the process corresponding to the change process 40A is executed. Therefore, the same reference numerals are assigned to these steps, and redundant description is omitted. .

  In this way, when either the channel up key or the channel down key is operated in a state where the tuner 14 receives the broadcast signal S that can select an arbitrary audio output mode from among a plurality of types of audio output modes. The main control unit 23 controls the video / audio processing unit (the video / audio processing unit 16 and the audio processing unit 17) to change the audio output mode, so that a general remote controller attached to the external device or a general-purpose remote control is used. A desired audio output mode can be changed by operating a channel up key and a channel down key provided on the remote control. Therefore, a desired type of sound can be output by operating various operation units (for example, the remote controller 4 attached to the external device) that do not have a dedicated key for changing the sound output mode.

  In addition, when either the channel up key or the channel down key is operated in a state where the channel switching condition in the present invention is satisfied, the main control unit 23 causes the tuner 14 to receive the broadcast signal S of the other channel, so that the audio is transmitted. Not only can the desired sound be output by operating various operation units that do not have a dedicated key for changing the output mode, but the original function assigned to the channel up key and the channel down key can be used to select the desired channel. Switching operation can be performed.

  Further, it is possible to adopt a configuration in which the audio output mode is changed by the operation of any one of the channel up key, the channel down key, and the channel designation key and the cursor key. Specifically, in the television 1 configured as described above, when the power input control signal S3 is output from the key input processing unit 13, the main control unit 23 starts the change processing 50 shown in FIG. . In the change processing 50, the main control unit 23 responds to any operation of the channel designation key, the channel up key, and the channel down key each time the control signal S3 is output from the key input processing unit 13. It is determined whether or not the control signal is S3 (whether or not each key has been operated) (step 51). At this time, for example, when it is determined that the channel designation key has been operated, the main control unit 23 determines whether or not a predetermined time (for example, 2 seconds) has elapsed since the operation point of the channel designation key (step 52). ). At this time, when the predetermined time has elapsed, the main control unit 23 determines whether or not the predetermined time has elapsed after the operation of the cursor key (step 53), determines that the cursor key has not been operated, and selects the channel. The processing unit 15 is controlled to cause the tuner 14 to receive the broadcast signal S of the channel corresponding to the control signal S3 (channel switching: step 54).

  On the other hand, when the cursor key is operated within the predetermined time after the channel designation key is operated (step 55), the main control unit 23 determines the channel (channel being viewed) received by the tuner 14. It is determined whether or not the broadcast signal S is an audio multiplex broadcast (step 56). At this time, when it is not the audio multiplex broadcast, the main control unit 23 controls the channel selection processing unit 15 to switch the channel (step 54). If it is determined that the audio multiplex broadcast is selected, the main control unit 23 controls the audio processing unit 17 to increment the flag in the audio output mode storage unit 18 (step 57). In this case, when the flag after counting up is “4”, the main control unit 23 changes the flag from “4” to “1”. Next, the main control unit 23 controls the audio processing unit 17 to output an audio signal corresponding to a flag (for example, flag = “2”) stored in the audio output mode storage unit 18 (audio corresponding to mode 2). Signal Sa12) is generated (change of audio output mode: step 58). As a result, the audio signal Sa12 generated by the audio processing unit 17 is output to the audio output unit 19, and the sub audio is output from the speaker 20. Thereafter, when the predetermined time has elapsed without the cursor key being operated again (step 52), the main control unit 23 determines that the predetermined time has elapsed after the operation of the cursor key (step 53), and the channel designation key. Then, it is monitored whether or not the control signal S3 corresponding to the operation of the channel up key and the channel down key is output (step 51).

  As described above, any one of the channel designation key, the channel up key, and the channel down key is selected in a state where the tuner 14 receives the broadcast signal S that can select an arbitrary audio output mode from among a plurality of types of audio output modes. The main control unit 23 controls the video / audio processing unit (the video / audio processing unit 16 and the audio processing unit 17) to change the audio output mode when the cursor key is operated within a predetermined time after the operation. It is possible to change to the audio output mode by operating channel up keys, channel down keys, channel designation keys, and cursor keys provided on a general remote controller such as a remote controller attached to an external device or a general-purpose remote controller. Therefore, a desired sound can be output by operating various operation units (for example, the remote controller 4 attached to the external device) that do not have a dedicated key for changing the sound output mode.

  Also, an example of outputting sound in any one of the three sound output modes of main sound output (mode 1), sub sound output (mode 2), and main sound and sub sound output (mode 3). However, the types of audio output modes are not limited to three. In this case, the number of types of audio that can be output based on one video / audio signal Sav such as Japanese audio, English audio, French audio, Spanish audio, Chinese audio, stereo and monaural (audio output in the present invention). When the number of types of modes) is large, it is preferable that the order of the audio output modes switched by the main control unit 23 can be set. Specifically, it is set so that the output mode can be switched in the order of, for example, a Japanese audio output mode, an English audio output mode, and a French audio output mode from among a number of national language audio output modes. As described above, since the order of changing the audio output mode can be set, it is possible to select a desired type of audio output mode by selecting in advance an audio output mode that is frequently selected at the time of viewing. Audio can be easily output with few key operations.

  Also, when there are a large number of types of audio that can be output based on one video / audio signal Sav (audio output mode in the present invention), the audio output mode in which the change by the above-described change processing 30, 40A, 40B, 50 is allowed Is preferably configured in advance. Specifically, for example, only two voice output modes, ie, a Japanese voice output mode and an English voice output mode are set from among a number of national language voice output modes. As described above, by configuring the audio output mode allowing change, even if there are a large number of selectable audio output modes, the desired audio output mode can be easily specified with few key operations. .

  Moreover, although the example which mounted the receiver which concerns on this invention in the television 1 was demonstrated, this invention is applicable to the receiver which is not provided with the display part, or the receiver mounted in the video recording apparatus. Further, although the rear projection type television has been described above, the present invention can also be applied to a television having various displays such as a liquid crystal display, a plasma display, an organic EL display, and a CRT. In addition, the video / audio signal received by the receiving apparatus according to the present invention is not limited to the broadcast signal S as in the above example, but the video / audio signal received via the network or the external connected to the receiving apparatus. This includes various video / audio signals such as video / audio signals output from the apparatus.

1 is a configuration diagram showing a configuration of a projection television 1. FIG. 5 is a flowchart of a change process 30. It is a flowchart of the change process 40A. It is a flowchart of the change process 40B. 10 is a flowchart of a change process 50.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Projection television, 3, 4 Remote control, 11 Operation part, 12 Light-receiving part, 13 Key input process part, 14 Tuner, 15 Channel selection process part, 16 Video | voice audio | voice process part, 17 Audio | voice process part, 18 Audio | voice output mode memory | storage part, 19 audio output unit, 20 speaker, 21 video output unit, 22 display unit, 23 main control unit, 30, 40A, 40B, 50 change processing, S broadcast signal, Sav video audio signal, Sa1, Sa2, Sa11 to Sa13 audio signal , Sv, Svo video signal, S1, S2 operation signal, S3 control signal, Sa audio signal, Sv video signal

Claims (7)

A receiving unit that receives a video / audio signal; a video / audio that generates a video signal based on the video / audio signal and outputs the video signal to a display device; A processing unit that causes the receiving unit to receive the video / audio signal of the designated channel, causes the video / audio processing unit to generate the video signal and the audio signal, and controls the video / audio processing unit to control the video / audio A controller that changes a sound output mode of the sound signal generated based on the signal,
The control unit has the same channel as the received channel in a state where the video / audio signal capable of selecting an arbitrary audio output mode from the plurality of types of audio output modes is received by the receiving unit. A receiving device that changes the audio output mode when designated by an operation of a channel designation key. A receiving unit that receives a video / audio signal; a video / audio that generates a video signal based on the video / audio signal and outputs the video signal to a display device; A processing unit that causes the receiving unit to receive the video / audio signal of the designated channel, causes the video / audio processing unit to generate the video signal and the audio signal, and controls the video / audio processing unit to control the video / audio A controller that changes a sound output mode of the sound signal generated based on the signal,
The control unit is one of a channel up key and a channel down key in a state where the video / audio signal capable of selecting an arbitrary audio output mode from the plurality of types of audio output modes is received by the receiving unit. A receiving device that changes the audio output mode when the is operated.   When one of the channel up key and the channel down key is operated in a state where the channel switching condition is satisfied, the control unit outputs the video / audio signal of another channel corresponding to the operation of any one of the keys. The receiving device according to claim 2, wherein the receiving unit receives the signal. A receiving unit that receives a video / audio signal; a video / audio that generates a video signal based on the video / audio signal and outputs the video signal to a display device; A processing unit that causes the receiving unit to receive the video / audio signal of the designated channel, causes the video / audio processing unit to generate the video signal and the audio signal, and controls the video / audio processing unit to control the video / audio A controller that changes a sound output mode of the sound signal generated based on the signal,
The control unit is configured to select a channel designation key, a channel up key, and a channel down in a state in which the video and audio signal capable of selecting an arbitrary audio output mode from the plurality of types of audio output modes is received by the receiving unit. A receiving device that changes the audio output mode when a cursor key is operated within a predetermined time after any of the keys is operated.   The receiving device according to any one of claims 1 to 4, wherein when the audio output mode is changed, the control unit changes a plurality of types of the audio output modes according to a predetermined order.   The receiving apparatus according to claim 5, wherein the receiving apparatus is configured to be able to set the predetermined order.   The receiving apparatus according to claim 1, wherein the receiving apparatus is configured to be able to set an audio output mode that allows the change.

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