JP4658640B2 - Information output device and display device - Google Patents

Description

  The present application relates to a technical field such as prevention of alteration of output modes such as image quality and sound quality output by an information output device.

  Conventionally, an information output device typified by a display device such as a display device changes an output mode of information such as an image and sound output by the owner by operating an operation panel, a remote control, etc. You can set it to your liking.

  Here, the output mode means, for example, the output sound volume, sound quality, stereo / monaural, left / right balance, etc., such as image contrast, brightness, color density, etc., and other output channels, broadcast stations, performances, etc. The quality, content, etc. of information output by the information output device determined by various states that can be changed by the owner or the like.

  Further, the video signal processing apparatus disclosed in Patent Document 1 is configured such that contrast information is not D / A (digital / analog) converted or A / D (analog / digital) converted, and the dynamic γ processing circuit is directly connected. By processing using the contrast information, the S / N ratio is improved and the gamma correction is made accurate.

Against the background of such technology, output quality such as image quality and sound quality of information output devices has been dramatically improved, and accordingly, the range of output modes in which settings can be changed has become wide.
JP-A-8-190363

  By the way, when an information output device is displayed at a store or an exhibition hall, the contrast of the image is extremely reduced from the viewpoint of sales promotion or the like, for reasons such as making the exhibit stand out or highlighting features. In some cases, the output mode is set to flashy, such as making it higher or brighter.

  However, since the conventional information output device can freely change the output mode, for example, the output mode of the device on which customers, visitors, etc. were exhibited was changed, and the changed state was left unattended. In such a case, there is a problem that it is not preferable from the viewpoint of sales promotion. On the other hand, since there are circumstances in which the output mode is changed in order for customers, visitors, etc. to check the performance of the device, prohibiting the change of the output mode uniformly is from the viewpoint of sales promotion etc. It is not valid.

  Therefore, the present application has been made in view of the above-mentioned problems, and as its problem, it is possible to change the output mode by a customer or the like, but to prevent the output mode from being left unchanged. One example is to provide an information output device and a display device.

In order to solve the above problems, the invention according to claim 1 is a receiving device for receiving a digital broadcast signal in an information output device for outputting the information based on setting information for setting an information output mode. To recognize the identification number recorded on the recording medium on which the information used for releasing the reception restriction of the digital broadcast signal is recorded, and change the setting information based on the recognized identification number. An operation mode identifying means for identifying an operation mode used for determining whether to return to the original setting information, and the setting for outputting the information in the specific output mode in which the setting information is set in advance. Change detection means for detecting whether or not the specific setting information as information has been changed to other setting information for outputting the information in another output mode; and the setting information The case where it has been changed from the specific configuration information to the other setting information is detected, based on the operation mode identified by said operating mode identifying means, wherein the specific setting information of the setting information of the original after change Return control means for determining whether to return to the original setting information, and when it is determined to return the changed setting information to the original specific setting information, the changed setting information is returned to the original specific setting information. Return means for outputting the information.

In order to solve the above problem, the invention according to claim 4 includes the information output device according to any one of claims 1 to 3 as output means, wherein the output means outputs image information, The image processing apparatus further includes display means for displaying the output image information.

In order to solve the above-mentioned problem, the invention according to claim 6 is a receiving device for receiving a digital broadcast signal in an information output method for outputting information based on setting information for setting an information output mode. To recognize the identification number recorded on the recording medium on which the information used for releasing the reception restriction of the digital broadcast signal is recorded, and change the setting information based on the recognized identification number. An operation mode identifying step for identifying an operation mode used for determining whether or not to return to the original setting information, and the setting for outputting the information in a specific output mode in which the setting information is set in advance. A change detection step for detecting whether or not the setting information is changed to the other setting information for outputting the information in another output mode from the specific setting information that is information; and the setting information The case where it has been changed from the specific configuration information to the other setting information is detected, based on the identified the operation mode in the operation mode identification process, the specific setting information of the setting information of the original after change A return control step for determining whether or not to return to the original setting information, and when it is determined to return the changed setting information to the original specific setting information, the changed setting information is returned to the original specific setting information. characterized in that it comprises a and a return step of outputting the information.

  Next, the best mode for carrying out the present application will be described with reference to the drawings. In addition, embodiment described below is embodiment at the time of applying this application with respect to the plasma display television with a built-in digital tuner.

  FIG. 1 is a block diagram showing an example of a schematic configuration of a plasma display television with a built-in digital tuner according to the present embodiment.

  As shown in FIG. 1, a plasma display television with a built-in digital tuner (hereinafter simply referred to as a plasma display) according to this embodiment includes a microcomputer 1 that controls each part of the plasma display according to this embodiment, a customer, and the like. An operation unit 2 that notifies the microcomputer 1 of the contents of operation of buttons and the like arranged on the operation panel, an E2PROM (E squared Programmable Read Only Memory) 3 that stores specific setting information according to the present embodiment, and the present embodiment Is converted from an analog signal to a digital signal by a flash memory 4 that stores the operation mode and setting information, a tuner unit 5 that outputs a received broadcast signal as a composite signal, and an A / D (Analog / Digital) converter (not shown). Y to separate luminance (Y axis) and color signal (C) from the composite signal C separation unit 6, chroma demodulation unit 7 for generating color difference signals Cb and Cr, luminance signal Y and color difference of the composite signal converted from an analog signal to a digital signal by an A / D conversion unit (not shown) A matrix circuit 8 that generates RGB (Red Green Blue) signals based on the signals Cb and Cr, an image quality adjustment unit 9 that performs image quality adjustment by processing the RGB signals output from the matrix circuit 8, and an image quality adjustment unit 9 And a PDP (Plasma Display Panel) 10 for inputting and outputting a predetermined image.

  The microcomputer 1, the operation unit 2, the E2PROM 3, the flash memory 4, the tuner unit 5, the Y / C separation unit 6, the chroma demodulation unit 7, the matrix circuit 8, and the image quality adjustment unit 9 according to the present embodiment are related to the present application. An output unit is configured, and the PDP 10 configures a display unit.

  The output mode in the present embodiment is the image quality of the image output from the PDP 10, and includes image quality adjustment parameters such as a luminance signal Y output level, a color difference signal Cb, a Cr output level, an R, G, B output level, and a white balance. Determined by the setting information.

  In addition, as the image quality mode indicating the output mode in the present embodiment, three types of modes are prepared: a dynamic mode, a standard mode, and a manual mode. Here, the dynamic mode is an image quality mode in which each image quality adjustment parameter is set in advance as specific setting information in order to increase levels such as brightness, contrast, and color density of an image output from the PDP 10. The standard mode is an image quality mode in which each image quality adjustment parameter is set in advance as specific setting information so that the levels of image brightness, contrast, color density, etc. are about the middle. The manual mode is an image quality mode in which each image quality adjustment parameter can be arbitrarily changed by a customer or the like operating the operation unit 2.

  As an operation mode in this embodiment, a storefront mode as an operation mode in which the setting information is returned by the return means and a user mode as an operation mode in which the setting information is not returned by the return means are prepared. Yes. Here, the storefront mode is an operation mode assuming that the plasma display is displayed at a store or the like, corresponds to a dynamic mode as a preset image quality, and when the image quality is changed by a customer or the like, The image quality returns to the dynamic mode after 10 minutes. In addition, the user mode is an operation mode that assumes that the general user will change to the desired image quality when using it at home after purchasing a plasma display, and corresponds to the standard mode as the preset image quality. To do.

  The microcomputer 1 is constituted by a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), and the like, and the CPU 1 reads and executes a program stored in the ROM. While controlling the plasma display which concerns on a form, it functions as a change detection means, a return means, an operation mode identification means, and a return control means.

  In addition to a power switch, a volume adjustment button, a channel switching button, various buttons for image quality adjustment, and the like that can be directly operated by the customer, the operation unit 2 is an infrared ray transmitted from the remote control when the customer operates the remote control. A light receiving unit for receiving signals is provided, and the contents of operations by customers and the like are notified to the microcomputer 1.

  The E2PROM 3 stores image quality adjustment parameters corresponding to the dynamic mode and the standard mode. Since the E2PROM 3 is a rewritable ROM, for example, when the specifications relating to image quality are changed, the image quality adjustment parameters can be rewritten at the time of product shipment.

  The flash memory 4 stores an operation mode identified by the microcomputer 1 and an image quality adjustment parameter for setting the current output image quality, and such information is not erased even when the plasma display is turned off. .

  When the dynamic mode or the standard mode is selected by the image quality mode changing operation of the operation unit 2 by the customer or the like, the microcomputer 1 reads the image quality adjustment parameter corresponding to the selected image quality mode from the E2PROM 3 and stores it in the flash memory 4. . When the manual mode is selected and the image quality adjustment parameter is changed by the image quality mode change operation of the operation unit 2 by the customer or the like, the microcomputer 1 rewrites the image quality adjustment parameter stored in the flash memory 4.

  Then, the microcomputer 1 sets the adjustment parameters of the luminance signal output level and the output levels of the color difference signals Cb and Cr stored in the flash memory 4 to the chroma demodulator 7 and the adjustment parameters of the R, G and B output levels in a matrix. The wide-width balance adjustment parameters are sent to the circuit 8 to the image quality adjustment unit 9, respectively. Then, the chroma demodulator 7, the matrix circuit 8, and the image quality adjustment unit 9 execute respective processes according to the received image quality adjustment parameters.

  The tuner unit 5 receives a signal corresponding to a broadcast selected by a channel operation of the operation unit 2 by a customer or the like through a television antenna (not shown), and an image signal included in the broadcast signal is used as a composite signal as a Y / C separation unit 6. Are output to the matrix circuit 8 as component signals.

  However, some broadcast signals are scrambled, and when a B-CAS (registered trademark: BS Conditional Access Systems) card 100 is inserted into the tuner unit 5, the tuner unit 5 is attached to an IC chip embedded in the card. The recorded identification number is read out, and the scramble is canceled based on the identification number, so that an appropriate image signal can be output.

  Here, the B-CAS card (hereinafter also referred to as a card as appropriate) is a card necessary for receiving various broadcasts such as terrestrial digital television broadcast, BS digital broadcast, and CS digital broadcast. -Issued, operated and managed by Conditional Access Systems.

  As described above, an IC (Integrated Circuit) chip in which an identification number for identifying the owner of the card is recorded is embedded in the card 100. The card 100 is classified into a general user, a manufacturer, and a store, and can be identified by a number band of an identification number recorded on the card. This identification number is composed of 20 digits, and the four digits from the fifth digit to the eighth digit indicate the classification of the owner. When the 4-digit number is in the 1000s, 2000s, and 3000s, it is for general users, the 0000s is for manufacturers, and the 4000s is for stores.

  The general user card and the manufacturer card correspond to the user mode, and the store card corresponds to the storefront mode. When the card 100 is mounted on the tuner unit 5, the microcomputer 1 records the card 100 by the operation mode identification means. The recognized identification number is recognized, and the operation mode is identified based on the number band of the recognized identification number. When the card 100 is not loaded, the operation is performed in the user mode.

  Next, the operation of the plasma display according to the present embodiment will be described. First, the operation from when the power is turned on until the image quality is changed will be described with reference to FIG. FIG. 2 is a flowchart showing an example of processing of the microcomputer 1 from when the power is turned on until the image quality is changed.

  When the power is turned on by a power switch operation of the operation unit 2 by a customer or the like, the microcomputer 1 determines whether or not the card 100 is attached to the tuner unit 5 as shown in FIG. 2 (step S1). When 100 is not attached (step S1: NO), the microcomputer 1 identifies the operation mode as the user mode (step S5).

  When the card 100 is loaded (step S1: YES), the microcomputer 1 recognizes the identification number of the card 100 (step S2). Here, it is determined whether or not the number band of the recognized identification number is in the 4000 range (step S3). If the number band is in the 4000 range, that is, if the card 100 is for a store (step S3: YES). The microcomputer 1 identifies the operation mode as the storefront mode (step S4). When the number band is other than 4000, that is, when the card 100 is for a general user or a manufacturer (step S3: NO), the microcomputer 1 identifies the operation mode as the user mode (step S5).

  The microcomputer 1 compares the identified operation mode with the operation mode stored in the flash memory 4 (step S6), and if they are the same (step S6: YES), the microcomputer 1 proceeds to step S8. Is different (step S6: NO), the image quality adjustment parameter of the image quality mode corresponding to the identified operation mode is read from the E2PROM 3, and the image quality adjustment parameter stored in the flash memory 4 is rewritten and stored in the flash memory 4. The current operation mode is rewritten to the identified operation mode (step S7).

  In step 8, the microcomputer 1 reads out the image quality adjustment parameters stored in the flash memory 4 and sends them to the chroma demodulation unit 7, the matrix circuit 8 and the image quality adjustment unit 9. The chroma demodulation unit 7, the matrix circuit 8, and the image quality adjustment unit 9 perform signal processing according to the image quality adjustment parameters, respectively, and finally the PDP 10 displays and outputs an image according to the signal output from the image quality adjustment unit 9 (step S9). Thereafter, the microcomputer 1 waits for reception of the operation content from the operation unit 2 (step S10).

  Thus, if the identified operation mode is different from the one identified at the previous power-on, an image is output with an image quality corresponding to the currently identified operation mode. In this way, for example, when a general customer purchases an over-the-counter display item and uses it at home, the customer can change the card from the store to the general user. Thus, an image can be output in an appropriate output mode without an image quality changing operation due to the above.

  In step S10, the microcomputer 1 receives the operation content from the operation unit 2 when the operation unit 2 is operated by a customer or the like.

  Then, it is determined whether or not the operation content is power off (step S11). When the operation content is power off (step S11: YES), the operation of the plasma display is stopped, and when the power content is not off (step S11). Step S11: NO), the process proceeds to step S12.

  In step S12, the microcomputer 1 determines whether or not the operation content is an image quality adjustment parameter change. If the operation content is an image quality adjustment parameter change (step S12: YES), the microcomputer 1 proceeds to step 13 and changes the image quality adjustment parameter. If not (step S12: NO), the process proceeds to step S10.

  In step 13, the microcomputer 1 rewrites the image quality adjustment parameter stored in the flash memory 4.

  Then, when the changed image quality adjustment parameters are sent to the chroma demodulation unit 7, the matrix circuit 8 and the image quality adjustment unit 9 (step S14), the chroma demodulation unit 7, the matrix circuit 8 and the image quality adjustment unit 9 change the image quality adjustment parameters after the change. The PDP 10 displays and outputs an image according to the signal finally output from the image quality adjustment unit 9 (step S15).

  Next, it is determined whether or not the operation mode stored in the flash memory 4 is the storefront mode (step S16). If the operation mode is the storefront mode (step S16: YES), the process proceeds to step S17 and is not the storefront mode. In the case (step S16: NO), the process proceeds to step S10.

  In step S <b> 17, the microcomputer 1 sets 600000 milliseconds (10 minutes × 60 seconds × 1000 mm) in the RAM of the microcomputer 1 as the image quality restoration waiting time. Then, a setting for performing image quality restoration processing is performed by a timer interrupt described later (step S18). More specifically, the address information of the timer interrupt routine is stored in the RAM of the microcomputer 1, and this information is rewritten to the start address of the routine that performs the return process.

  Thereafter, the microcomputer 1 proceeds to step 10 and waits for reception of the operation content from the operation unit 2.

  Next, the operation for restoring the changed image quality will be described with reference to FIG. FIG. 3 is a flowchart illustrating an example of processing of the microcomputer 1 when the changed image quality is restored.

  The timer circuit in the microcomputer 1 outputs a timer interrupt signal every 10 milliseconds. When the CPU receives this timer interrupt signal, the microcomputer 1 temporarily suspends the processing currently being performed, and performs the processing necessary at the time of timer interrupt based on the address information of the timer interrupt routine. Here, when the image quality is changed when the operation mode is the storefront mode, the address information of the timer interrupt routine indicates the start address of the routine that performs the return process by rewriting in step S18. Performs the return processing described below.

  As shown in FIG. 3, the microcomputer 1 rewrites the return waiting time set at the time of changing the image quality by subtracting 10 milliseconds (step S51). Then, it is determined whether or not the subtracted return waiting time is 0 (step S52). If it is 0 (step S52: YES), the process proceeds to step S53, and if it is not 0 (step S53: NO). The interrupt process is terminated.

  In step S53, the microcomputer 1 reads from the E2PROM 3 the dynamic mode image quality adjustment parameters, which are specific setting information corresponding to the storefront mode, and stores the image quality adjustment parameters stored in the flash memory 4 in the original dynamic mode read out. Rewrite to the image quality adjustment parameter.

  Next, when the changed image quality adjustment parameters are sent to the chroma demodulation unit 7, the matrix circuit 8 and the image quality adjustment unit 9 (step S54), the chroma demodulation unit 7, the matrix circuit 8 and the image quality adjustment unit 9 follow the original image quality adjustment parameters. Each signal processing is performed, and the PDP 10 displays and outputs an image according to the signal finally output from the image quality adjustment unit 9 (step S55).

  Then, the address information of the timer interrupt routine is returned to the original information to cancel the timer interrupt (step S56), and the interrupt process is terminated.

  Thus, when the image quality is changed in the storefront mode, the image quality of the image displayed and output by the PDP 10 returns to the dynamic mode 10 minutes after the change is made.

  As described above, according to the plasma display of the present embodiment, when the output mode is detected and the output mode is changed, the output mode is returned to the preset specific output mode. Therefore, it is possible to prevent the customer from being left in a state in which the output mode is changed while allowing the customer to change the output mode.

  In addition, since the output mode is restored after a certain period of time has elapsed since the output mode was changed, after the customer or the like has changed the output mode, a certain period of time can be secured so that the changed output mode can be confirmed. Can sufficiently check the performance of the information output device.

  Also, the store mode that restores the output mode and the user mode that does not return are identified, and the output mode is restored only in the store mode. For example, when displaying at a store, set to the store mode However, by setting the user mode after the purchase, the customer etc. can freely change the output mode, and can be prevented from forcibly returning to the output mode contrary to the customer's intention. .

  In addition, since the operation mode is identified based on the identification information recorded on the B-CAS card, in a digital tuner built-in television or the like in which the broadcast content cannot be viewed unless the card is attached to the tuner, Since the card owner can be specified by the recorded identification number, etc., it can be determined reliably whether the owner is a store or a general user, etc., with the card installed, It is possible to reliably determine in which operation mode to operate.

  Furthermore, since the B-CAS card has already been issued and is operated and managed, it is not necessary to prepare a special recording medium. In addition, since devices such as tuners and televisions corresponding to this card are generally developed, it is not necessary to separately develop means for recognizing identification information. Therefore, it becomes possible to facilitate the development, manufacture, etc. of the information output device according to the present application.

  In the above embodiment, the information defining the output mode according to the present application is applied only to information relating to the image quality of the output image. However, the present invention is not limited to this, and the volume and sound quality of the output audio are not limited thereto. Further, the present invention may be applied to other information such as stereo / monaural, left / right balance, and other output channels and broadcasting stations.

  In the above embodiment, the tuner unit 5 is built in the plasma display. However, the present invention is not limited to this, and the tuner is a separate device, and the tuner and the plasma display are connected by a cable or the like, and are identified from the tuner. You may make it receive a number.

  In the above embodiment, the operation mode is identified based on the identification number recorded on the IC chip embedded in the card. However, the present invention is not limited to this. For example, the operation mode is recorded on the magnetic stripe. You may identify based on information, and you may identify based on patterns, colors, etc., such as a character recorded on the card | curd surface and barcode.

  In the above embodiment, the recording medium according to the present application is applied to a card on which an identification number is recorded. However, the present invention is not limited to this. For example, the recording medium may be applied to a recording medium such as an IC memory. Good.

  In the above embodiment, the identification number recorded on the card is recognized and the operation mode is identified based on this identification number. However, the present invention is not limited to this. The selected operation mode may be identified by performing the operation mode change operation 2 or the like.

  In the above embodiment, the information output apparatus according to the present application is applied to a plasma display. However, the present invention is not limited to this. For example, a liquid crystal display, a CRT (Cathode Ray Tube) display, an organic EL (Electronic Luminescent) ) It may be applied to a display device such as a display or a rear projection television. Further, the information output device according to the present application may be applied to, for example, an image output device or an image / audio output device such as a DVD player or a video recorder, or may be applied to an audio output device such as a radio or an audio amplifier. However, the present invention may be applied to other information output devices.

  In the above embodiment, the output mode is restored after a lapse of a certain time after the output mode is changed. However, the present invention is not limited to this, for example, the current setting information and the specific setting every fixed time. When the information is compared and the setting information is changed when they are different, the return operation may be performed, or the return operation may be performed based on an operation by the owner or the customer such as turning on the power. You may do it.

It is a block diagram which shows an example of schematic structure of the plasma display television with a built-in digital tuner which concerns on this embodiment. 4 is a flowchart illustrating an example of processing of the microcomputer 1 from when the power is turned on until the image quality is changed. It is a flowchart which shows an example of a process of the microcomputer 1 in the case of returning the changed image quality.

Explanation of symbols

1 Microcomputer 2 Operation section 3 E2PROM
4 Flash memory 5 Tuner unit 6 Y / C separation unit 7 Chroma demodulation unit 8 Matrix circuit 9 Image quality adjustment unit 10 PDP
100 B-CAS card

Claims (6)

In the information output device that outputs the information based on the setting information for setting the output mode of the information,
Recognizing an identification number recorded on a recording medium on which information used for releasing the reception restriction of the digital broadcast signal is recognized by a receiving device that receives the digital broadcast signal, and based on the recognized identification number An operation mode identifying means for identifying an operation mode used for determining whether to return the changed setting information to the original setting information;
Other setting information for outputting the information in another output mode from the specific setting information which is the setting information for outputting the information in the specific output mode set in advance. A change detection means for detecting whether or not
When it is detected that the setting information has been changed from the specific setting information to the other setting information , based on the operation mode identified by the operation mode identification unit, the changed setting information is changed to the original setting information. Return control means for determining whether or not to return to the specific setting information;
When it is determined that the changed setting information is to be returned to the original specific setting information, return means for returning the changed setting information to the original specific setting information and outputting the information;
An information output device comprising: The information output device according to claim 1,
When the return means determines that the changed setting information is to be returned to the original specific setting information, it is detected that the setting information has been changed from the specific setting information to the other setting information. From the above, the information output apparatus is characterized in that after a predetermined time elapses, the changed setting information is returned to the original specific setting information to output the information. In the information output device according to claim 1 or 2,
The information output device, wherein the recording medium is a B-CAS card. The information output device according to any one of claims 1 to 3 is provided as output means,
The output means outputs image information;
The display device further comprises display means for displaying the output image information. The display device according to claim 4,
The output mode is the image quality of the image information output by the output means,
The output means outputs the image information based on the setting information corresponding to an image quality mode indicating an image quality of the image information;
Whether the change detection means has changed the setting information from the specific setting information corresponding to the specific image quality mode set in advance to the other setting information corresponding to the other image quality mode. Detect whether or not
When it is determined that the setting information after the change is returned to the original specific setting information, the return means returns the setting information after the change to the original specific setting information and the output means performs the specific image quality. A display device, wherein the image information is output with an image quality indicated by a mode, and the image information is further displayed by the display means. In an information output method for outputting the information based on setting information for setting an output mode of information,
Recognizing an identification number recorded on a recording medium on which information used for releasing the reception restriction of the digital broadcast signal is recognized by a receiving device that receives the digital broadcast signal, and based on the recognized identification number An operation mode identification step for identifying an operation mode used for determining whether to return the changed setting information to the original setting information;
Other setting information for outputting the information in another output mode from the specific setting information which is the setting information for outputting the information in the specific output mode set in advance. A change detection step for detecting whether or not
When it is detected that the setting information has been changed from the specific setting information to the other setting information, the setting information after the change is restored to the original based on the operation mode identified in the operation mode identification step. A return control step for determining whether to return to the specific setting information;
If it is determined that the changed setting information is to be returned to the original specific setting information, a return step for returning the changed setting information to the original specific setting information and outputting the information;
An information output method comprising:

Images