JP2010200189A - Receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a receiver which reduces the time and effort required for settings of signal processing, relating to image quality and sound quality of output image and output audio. <P>SOLUTION: The receiver includes at least one external input system (external analog input part 12, external digital input part 13) for inputting an external input signal and a storage means (storage memory 16) for storing a connection history for each external input system, wherein the connection history includes setting information of signal processing related to image quality and sound quality of output image (output image on a display section 10) and output audio (output audio from a speaker 11). <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a receiver for receiving broadcasts, and more particularly to a receiver having an external input system for inputting an external input signal.

  In recent years, receivers for general households are equipped with various types of external input terminals, and have become hard specs capable of simultaneously connecting many external devices. In addition, many receivers are equipped with an HDMI terminal compatible with HDMI (High-Definition Multimedia Interface) capable of bidirectional communication. Under such circumstances, in addition to a playback device such as a conventional VTR or DVD player, a digital camera, a digital video, or the like is connected to the receiver as an external device.

  There are many digital cameras and digital videos that output operation sounds according to user operations as output sound. Such external devices are connected to the receiver and the operation sound of the external device is output from the receiver as output sound. When it is output, it may sound very loud with the volume setting during normal viewing. Also, when the external device is connected to the receiver and the output video of the external device is displayed by the receiver, the bias of the output video unique to the external device (for example, reddish or too bright) may be noticeable. .

  However, in external devices (digital home appliances that can be externally connected to a receiver), there are currently no standards for operating sounds and regulations regarding output video bias.

JP 2008-28829 A

  Due to the above situation, in the conventional receiver, when the selection of the external input system is switched, there is a problem in the image quality and sound quality of the output image and output sound (for example, the problem that the volume of the output sound is unusually high) If the output image appears reddish or floats white due to the bias of the output video unique to the external device or the display panel habit of the receiver, In addition, using the menu screen for changing the signal processing settings related to the image quality and sound quality of the output sound, the signal processing settings related to the image quality and sound quality of the output image and output sound must be adjusted appropriately. If the signal processing settings related to the image quality and sound quality of the output image and output sound are changed by the adjustment, the settings before the change are deleted.

  For this reason, every time the selection of the external input system is switched, it may be necessary to change the settings of the output image and output sound and the signal processing related to the sound quality.

  Note that Patent Literature 1 proposes a broadcast viewing system that transmits data necessary for viewing a broadcast from the first device to the second device via, for example, an HDMI cable. Is not a technique related to the image quality of the output image and output sound of the receiver and the signal processing settings related to the sound quality. In Patent Document 1, data necessary for viewing a broadcast is transmitted and received using, for example, a CEC command. In this case, the CEC command is not a common command among manufacturers, but a command ( Vendor command). In such an embodiment, since it is not possible to develop both the external device and the receiver after setting the data structure of the vendor command in advance, the compatibility between a plurality of devices becomes extremely low.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a receiver that can reduce the time and effort required to set signal processing related to the image quality and sound quality of output images and output sounds.

  In order to achieve the above object, a receiver according to the present invention includes at least one external input system for inputting an external input signal, and includes storage means for storing a connection history for each external input system, The image processing apparatus includes signal processing setting information related to the image quality and sound quality of the output image and output sound. According to such a configuration, when the selection of the external input system is changed, the output image and the image quality of the output sound included in the connection history and the signal processing setting information related to the sound quality are used to output the output image. In addition, since it is possible to change the signal processing settings related to the image quality and sound quality of the output sound, it is possible to reduce time and effort required for the signal processing settings related to the image quality and sound quality of the output image and output sound.

  Moreover, you may make it provide the list display means to display the said connection log | history by a list, and the 1st selection means to select the specific item of the said list | wrist. As a result, even if the connected device connected to the selected external input system is different from the connected device connected last time, the image quality and sound quality of the output image and the output sound can be improved by the selection by the first selection means. It becomes possible to make relevant signal processing settings appropriate.

  In addition, the connection history includes information on a connected device, and the external input system includes at least one external input system with a communication unit having a communication unit that can identify the connected device. And when the external input system with the communication means is selected, the image related to the image quality and the sound quality of the output image and the output sound when the same device as the connection device specified by the communication means is connected You may make it provide the 2nd selection means to select the setting information of a process from the said connection history. As a result, even when the connected device connected to the selected external input system is different from the previously connected device, the image quality of the output image and output audio and the signal processing settings related to the sound quality are automatically and appropriately set. It becomes possible to do.

  In addition, the output image and the output sound included in the connection history selected by the first selection unit and / or the second selection unit may be the same as the image quality of the output sound and the signal processing setting information related to the sound quality. The image processing apparatus may include a setting changing unit that changes signal processing settings related to the image quality and sound quality of the output image and output sound.

  ADVANTAGE OF THE INVENTION According to this invention, the receiver which can reduce the effort concerning the setting of the signal processing relevant to the image quality and sound quality of an output image and output audio | voice can be implement | achieved.

These are figures which show the example of 1 structure of the receiver concerning this invention. These are figures which show notionally the data structure example of the connection history memorize | stored in the memory. These are the flowcharts which show the setting operation example of the signal processing relevant to the image quality and sound quality of an output image and output sound. FIG. 10 is a diagram showing a list display example.

  Embodiments of the present invention will be described below with reference to the drawings. A configuration example of a receiver according to the present invention is shown in FIG. The receiver shown in FIG. 1 is a digital receiver that receives digital broadcasts, and includes a tuner 2, a demultiplexer (hereinafter referred to as DEMUX) 3, a decoder 4, a CPU 5, a scaler 6, and a frame memory 7. , Video processing unit 8, audio processing unit 9, display unit 10, speaker 11, external analog input unit 12, external digital input unit 13, A / D conversion unit 14, history search / setting extraction unit 15, a storage memory 16, a history update / setting update unit 17, and a remote control light receiving unit 18.

  The antenna 1 receives a digital broadcast signal sent from a broadcasting station, a satellite, or the like, and sends a high frequency digital modulation signal including video data and audio data to the tuner 2.

  The tuner 2 extracts a signal having a specific frequency from the high frequency digital modulation signal in accordance with the channel selection signal from the CPU 5. The tuner 2 also includes a demodulation unit (not shown) including a demodulation circuit, a deinterleave circuit, an error correction circuit, and the like. The selected digital modulation signal is demodulated by the demodulation unit and a transport stream (hereinafter referred to as a transport stream). , TS).

  The DEMUX 3 separates the TS into an MPEG-2 (Moving Picture Experts Group-2) video stream, an audio stream, and PSI / SI (Program Specific Information / Service Information). The DEMUX 3 supplies a video stream and an audio stream to the decoder 4, analyzes program information included in the PSI / SI by the CPU 5, and provides a user service. Originally, the decoder 4 is separated into an MPEG decoder for digital broadcasting, a video decoder for composite signals, and an audio decoder, but FIG.

  The external analog input unit 12 inputs analog signals such as composite signals and component signals from the outside. The external analog input unit 12 has a composite terminal and an S terminal when the composite signal is input from the outside, and has a component terminal and a D terminal when the component signal is input from the outside. ing. The external digital input unit 13 inputs a digital signal such as a TMDS data signal transmitted via the HDMI cable from the outside. The external digital input unit 13 has an HDMI terminal and an HDMI receiver when the digital signal such as a TMDS (Transition Minimized Differential Signaling) data signal transmitted via the HDMI cable is input from the outside.

  The video data included in the analog signal output from the external analog input unit 12 is converted into digital data by the A / D conversion unit 14 and then input to the scaler 6 via the decoder 4 if it is a composite signal. The component signal is input to the scaler 6 without going through the decoder 4. On the other hand, video data included in a digital signal output from the external digital input unit 13 is directly input to the scaler 6.

  Video data output from the decoder 4, the A / D converter 14, or the external digital input unit 13 is written to the frame memory 7, which is a memory area for storing video data, via the scaler 6. The video processing unit 8 performs various signal processing on the video data sent from the frame memory 7 via the history search / setting extraction unit 15, and then passes through the history update / setting update unit 17. This is sent to the display unit 10. Thereby, an image is displayed on the screen of the display unit 10. The video processing unit 8 also has an OSD (On Screen Display) function for generating video data based on character information and color information instructed by the CPU 5.

  The audio data included in the analog signal output from the external analog input unit 12 is converted into digital data by the A / D conversion unit 14, and then output to the history search / setting extraction unit 15, where the history search / setting extraction unit 15 is sent to the voice processing unit 9 via 15. On the other hand, the audio data included in the digital signal output from the external digital input unit 13 is directly output to the history search / setting extraction unit 15 and sent to the audio processing unit 9 via the history search / setting extraction unit 15. . The voice processing unit 9 performs various signal processing on the voice data sent via the history search / setting extraction unit 15, and then sends it to the speaker 11 via the history update / setting update unit 17. Thereby, sound is emitted from the speaker 11.

  In the history search / setting extraction unit 15 provided in the preceding stage of the video processing unit 8 and the audio processing unit 9, the CPU 5 switches the output image and the image quality of the output audio and the signal to be processed in the signal processing related to the sound quality. When the timing is detected and the selected external input system is specified, the connection history is read from the storage memory 16 and, in principle, the latest one of the connection histories corresponding to the external input system specified by the CPU 5 is read. Extraction is further performed, and image processing setting information related to the image quality and sound quality of the output image and output sound included in the latest one is extracted, and the extracted setting information is sent to the video processing circuit 8 and the sound processing circuit 9. send. The video processing circuit 8 and the audio processing circuit 9 execute setting signal processing according to the information transmitted from the history search / setting extraction unit 15.

  Here, a data structure example of the connection history stored in the storage memory 16 is conceptually shown in FIG. In each connection history corresponding to each external input system, history number 1 is the latest.

  The history update / setting update unit 17 provided in the subsequent stage of the video processing unit 8 and the audio processing unit 9 has a calendar function, and the detection timing of the signal switching timing by the CPU 5 and the result of specifying the external input system, Based on the result of setting extraction by the history search / setting extraction unit 15, information on the currently selected external input system is added to the connection history to update the connection history and store it in the storage memory 16. In the state where the selection of the external input system is maintained, the image processing of the output image and output sound and the signal processing related to the sound quality are performed by the remote control signal from the remote control transmitter or the key operation of the operation unit provided in the receiver body. When a setting change is instructed, the image quality and sound quality of the output image and output sound included in the information related to the currently selected external input system added to the connection history Update the configuration information of the signal processing for communication with in the storage memory 16. By the way, the signal processing setting information related to the image quality and sound quality of the output image and output sound is setting parameters such as contrast and backlight brightness for the video, and volume, treble and bass settings for the sound. It is a parameter. Note that connection date data is not essential in the connection history data structure, and if the connection date data is not included in the connection history data structure, the history update / setting update unit 17 may not have a calendar function. In this case, the connection history data is arranged in accordance with the update order of the connection history.

  When a key provided on a remote control transmitter (not shown) is operated, a remote control signal corresponding to the key is transmitted from the light emitting unit of the remote control transmitter. The remote control light receiving unit 18 receives a remote control signal, converts it into an electrical signal, and gives it to the CPU 5.

  The CPU 5 executes processing according to a remote control signal from the remote control transmitter or a signal by a key operation of an operation unit provided in the receiver body, and controls the entire receiver.

  Next, with reference to the flowchart shown in FIG. 3, an example of the setting operation of the signal processing related to the image quality and the sound quality of the output image and output sound performed by the receiver shown in FIG. Explained.

  The CPU 5 determines the image quality of the output image and the output sound and the timing at which the signal to be processed in the signal processing related to the sound quality is switched (for example, when the power is turned on or the selection of the external input system is switched, When the signal is restored), the flowchart operation shown in FIG. 3 is started.

  First, the CPU 5 determines whether or not an external input system is selected (step S10). If the external input system is not selected (NO in step S10), that is, the signal based on the digital modulation signal selected by the tuner 2 is the processing target of the signal processing related to the image quality and sound quality of the output image and output sound. If there is, the history search / setting extraction unit 15 sets the image quality of the output image and output sound and the signal processing settings related to the sound quality as defaults (step S100), and the flow operation ends. On the other hand, if the external input system is selected (YES in step S10), the process proceeds to step S20. Information relating to the image quality of the output image and output sound and the default setting of signal processing related to the sound quality is stored in the storage memory 16, and when the broadcast program is viewed by the tuner 2, for example, in the remote control transmitter or the receiver main body. When volume adjustment or the like is performed by a key operation of an operation unit provided, the content is updated and stored in the storage memory 16.

  In step S20, the CPU 5 tries to specify the selected external input system, and determines whether or not the specification is successful. If the selected external input system is not successfully identified (NO in step S20), an error message is displayed on the display unit 10 using the OSD function of the video processing unit 8 (step S25), and history search is performed. The setting extraction unit 15 sets the output image and output sound image quality and signal processing settings related to sound quality to default (step S100), and the flow operation ends. As an example of the case where the selected external input system is not successfully identified, the selected external input system is an HDMI TMDS data signal system, and HDCP (High-bandwidth Digital Content Protection) authentication has failed. And so on. On the other hand, if the selected external input system has not been successfully identified (YES in step S20), the process proceeds to step S30.

  The history search / setting extraction unit 15 reads the connection history from the storage memory 16 (step S30), and determines whether there is a connection history corresponding to the specified external input system (step S40). If there is no connection history corresponding to the identified external input system (NO in step S40), the history search / setting extraction unit 15 sets the output image and output audio image quality and signal processing settings related to the sound quality as default (step S40). S100), the flow operation is terminated. On the other hand, when there is a connection history corresponding to the specified external input system (YES in step S40), the process proceeds to step S50.

  In step S50, the history search / setting extraction unit 15 determines whether or not the specified external input system has a communication unit that can specify the connected device, such as HDMI-CEC.

  If the identified external input system has a communication unit that can identify the connected device (YES in step S50), the history search / setting extraction unit 15 uses the communication unit to specify the identification information of the connected device. Is acquired (step 60), and is compared with all the connected devices included in the connection history corresponding to the specified external input system, and the same device as the specified connected device is found. It is determined whether or not the connection history corresponding to the specified external input system exists (step S70). If the same device as the identified connected device does not exist in the connection history corresponding to the identified external input system (NO in step S70), the history search / setting extraction unit 15 determines the image quality and sound quality of the output image and output sound. The signal processing setting related to is made the default (step S100), and the flow operation is terminated. On the other hand, if the same device as the identified connected device exists in the connection history corresponding to the identified external input system (YES in step S70), the history search / setting extraction unit 15 outputs the current output. It is determined whether the image processing quality of the image and the output sound and the signal processing settings related to the sound quality are the same as the settings when the same device as the specified connected device is connected (step S80). If not (NO in step S80), the flow operation is terminated without doing anything to prevent the double setting, and if they are not identical (NO in step S80), the image quality of the output image and the output sound and the signal related to the sound quality The processing setting is changed to be the same as the setting when the same device as the identified connected device is connected (step S90), and then the flow operation is terminated.

  On the other hand, if the identified external input system does not have a communication means that can identify the connected device (NO in step S50), the history search / setting extraction unit 15 corresponds to the identified external input system. The latest information is extracted from the connection history, and the output image and output audio image quality and the signal processing setting information related to the sound quality included in the latest information are extracted. It is determined whether the image quality of the output image and the output sound and the signal processing settings related to the sound quality are the same (step S110).

  If it is determined in step S110 that they are the same (YES in step S110), the flow operation is terminated without doing anything to prevent double setting.

  If it is determined in step S110 that they are not the same (NO in step S110), the image quality of the output image and output audio and the signal processing settings related to the sound quality are set in the connection history corresponding to the specified external input system. May be changed to be the same as the setting information of the signal processing related to the image quality and the sound quality of the output image and the output sound included in the latest one in the present embodiment. A list of connection histories corresponding to the input system is temporarily displayed (step S120), and a history number (see FIG. 2) according to a remote control signal from the remote control transmitter or a signal by a key operation of an operation unit provided in the receiver body. Is selected (YES in step S130), the image quality of the output image and output sound and the signal processing settings related to the sound quality are set to the output image and the output corresponding to the selected history number. It was changed to be identical to the setting of the associated signal processing on the output speech quality and sound quality (step S140), so that to terminate the subsequent flow behavior.

  Note that there is no problem even if the processing in steps S120 to S140 can be executed as interrupt processing at any time by the key operation of the operation unit provided in the remote control transmitter or receiver main body.

  FIG. 4 shows a list display example in step S120 when the specified external input system is a composite signal system. The list display shown in FIG. 4 is realized when the video processing unit 8 uses the OSD function to generate OSD data for list display based on the connection history stored in the storage memory 16 under the control of the CPU 5. can do. The type of the external input system currently selected is indicated in the frame 19 and the past connection in the external input system is displayed in time series in the frame 20. The display information includes information regarding the connection date and the connected device. List item selection (specifically, history number selection) is performed by, for example, operating the up and down keys and the decision key of the remote control transmitter, and the CPU 5 executes selection / determination processing according to the remote control signal from the remote control transmitter. Is selected and determined. The currently selected history number is indicated by a mark 21.

  In addition to the connection history list, items corresponding to the default settings of the signal processing related to the image quality and the sound quality of the output image and the output sound may be added to the list display in step S120 to enable selection of the default settings. .

  When the signal to be processed in the signal processing related to the image quality and sound quality of the output image and output sound is switched by the above-described operation, the image quality and sound quality of the output image and output sound included in the connection history are changed as necessary. Since the signal processing setting related to the image quality and sound quality of the output image and output sound is changed using the signal processing setting information related to the signal processing, the signal processing related to the image quality and sound quality of the output image and output sound is changed. Time and effort required for setting can be reduced.

  In addition, by the above-described operation, in principle, the image quality of the output image and output sound and the signal processing settings related to the sound quality are included in the latest connection history corresponding to the specified external input system. It is set to be the same as the setting information of the signal processing related to the image quality and sound quality of the output image and output sound (see YES in step S110 in FIG. 3). The reason for this is that the type of connected device connected to the external input system is usually fixed for each external input system, and the connected device connected to the selected external input system is connected last time. This is because it is rare to be different from the connected device.

  However, if the connected device can be specified, the image processing quality of the output image and output sound and the signal processing settings related to the sound quality should be the same as the settings when the same device as the specified connected device is connected. (See steps S80 and S90 in FIG. 3). As a result, even when the connected device connected to the selected external input system is different from the previously connected device, the image quality of the output image and output audio and the signal processing settings related to the sound quality are automatically and appropriately set. In the case where a connected device having a connection history is connected to the selected external input system, the image quality and sound quality of the output image and output sound of the receiver are stabilized.

  Furthermore, even if the connected device connected to the selected external input system is different from the previously connected device by the processing of step S120 to step S140, it is possible to cope with the selection from the list display. It is.

  As mentioned above, although embodiment which concerns on this invention was described, the range of this invention is not limited to this, A various change can be added and implemented in the range which does not deviate from the main point of invention. For example, in the above-described embodiment, the external input system is classified according to the type of the external input signal, but different external input systems may be used for each external input terminal. In this case, for example, if the receiver has a composite terminal and an S terminal, the composite terminal and the S terminal are handled as different external input systems, and if the receiver has a plurality of HDMI terminals, for example. Each HDMI terminal may be handled as a different external input system.

1 Antenna 2 Tuner 3 DEMUX (Demultiplexer)
4 Decoder 5 CPU
6 Scaler 7 Frame memory 8 Video processing unit 9 Audio processing unit 10 Display unit 11 Speaker 12 External analog input unit 13 External digital input unit 14 A / D conversion unit 15 History search / setting extraction unit 16 Storage memory 17 History update / setting update Part 18 Remote control light-receiving part 19, 20 Frame 21 Mark

Claims (4)

At least one external input system for inputting external input signals,
Storage means for storing a connection history for each external input system;
The receiver characterized in that the connection history includes output image and output image quality and signal processing setting information related to sound quality. List display means for displaying the connection history in a list;
The receiver according to claim 1, further comprising first selection means for selecting a specific item in the list. The connection history includes information about the connected device;
Among the external input systems, there is at least one external input system with communication means having communication means capable of specifying a connected device,
When the external input system with communication means is selected, the image processing of the output image and the output sound when the same device as the connection device specified by the communication means is connected and the signal processing related to the sound quality The receiver according to claim 1, further comprising second selection means for selecting setting information from the connection history.   Output so as to be the same as the output information included in the connection history selected by the first selection means and / or the second selection means, the image quality of the output audio, and the signal processing setting information related to the sound quality 4. The receiver according to claim 2, further comprising setting changing means for changing signal processing settings related to the image quality and sound quality of the image and output sound.

Images