JP5221977B2 - Video display device and program - Google Patents

Description

The present invention relates to a Film image display apparatus and a program.

  With the progress of digital technology in recent years, the television broadcasting system is also shifting to a digital high-definition system capable of transmitting HD (High Definition) video. Along with this, the environment for enjoying high-definition and high-quality digital high-definition broadcasting has spread to homes, and television receivers and recorders that support HD video have become widespread. In addition, a digital interface called HDMI (High-Definition Multimedia Interface) is used as one of output methods from a digital broadcast tuner or recorder to a television receiver.

  HDMI was developed for digital home appliances based on DVI (Digital Visual Interface), which is a digital interface for video input / output for personal computer displays. According to HDMI, a bidirectional control signal for remote control between devices can be transmitted with a single cable together with video data and audio data.

  In HDMI, bidirectional control between devices is realized using a device control protocol called CEC (Consumer Electronics Control). By using the CEC command defined in CEC, for example, it is possible to switch the input of the television receiver to the input by HDMI simply by turning on the power of the recorder. Further, for example, it is possible to turn on the power of the recorder and start recording the program being viewed simply by pressing the recording button of the remote control commander for remotely operating the television receiver.

  In addition to recorders, products equipped with video output terminals are becoming popular. For example, products having video output terminals for digital cameras, video cameras, printers, mobile phones with cameras, and the like have been developed. With such a device, you can enjoy photos taken with a digital camera as a slide show on a television set, or check the print image on the screen of the television set before printing, and then print it. It is possible to do. As described above, a product that allows a user to easily view a photograph, a moving image, etc. taken by a user simply by connecting a digital camera or the like to the television receiver is highly convenient for the user.

  By the way, the number of pixels of a photographed image has been increasing rapidly with the recent enhancement of the functions and performance of imaging devices represented by digital cameras and the like. For this reason, there are many examples of handling image data having a larger number of pixels than the number of pixels of a television receiver.

  As described above, HDMI can control display between two devices using a CEC command. Here, a printer having a video enlargement function and a television receiver are both connected by HDMI, and the printer outputs video data based on image data such as a photograph to the television receiver. Think.

  In such a case, when enlarging and displaying the image displayed on the television receiver, it is conceivable to transmit a command for enlarging the displayed image using the remote control commander of the television receiver. At this time, if the enlargement process is performed on the television receiver side in accordance with the display image enlargement command, the enlargement process is performed on the input image, so that it becomes a simple electronic zoom and the image quality deteriorates.

  Therefore, the enlargement command transmitted from the remote control commander to the television receiver is transmitted to the printer side using the HDMI CEC command. Based on this enlargement instruction, the enlargement process is performed on the printer side. The enlarged image data is transmitted from the printer to the television receiver via HDMI and displayed on the television receiver. Since the enlarged video can be generated from the original image data held by the printer and output to the television receiver, the enlarged video can be displayed without image quality deterioration.

  In this case, the enlargement command transmitted by the user operating the remote control commander of the television receiver is finally processed by the printer. In this way, when HDMI is used, processing between the television receiver and the printer can be performed seamlessly without making the user aware of it.

Japanese Patent Application Laid-Open No. 2004-228561 describes a technique for connecting a printer and an external display and controlling display contents on the external display. According to the description in Patent Document 1, an image input from a memory card to a printer is output to an external display, and an operation unit of the printer is operated to display a print preview or the like.
JP 2002-254751

  Here, for example, a case is considered in which a television receiver and a printer capable of outputting video are connected by the above-described HDMI, and the printer is controlled from the television receiver side. As an example, enlargement / reduction and scroll processing of video output from a printer and displayed on a television receiver are controlled from the television receiver side using a CEC command.

  In this case, it is necessary to transmit an enlargement command or a scroll command from the television receiver to the printer at any time during the enlargement process or the scroll process. Furthermore, it is necessary to transmit information indicating the display area of the video displayed on the television receiver relative to the original image from the television receiver to the printer as needed. For this reason, there has been a problem that the response to the user operation may be delayed due to command processing in the printer or communication loss between the television receiver and the printer. The same applies to a print area corresponding to an image displayed on the television receiver when the television receiver instructs the printer to perform trim printing.

  In addition, the above-described Patent Document 1 discloses a method of controlling each device by two-way communication because an image displayed on an external display is controlled by operating an operation unit of a printer on the image output side. Not.

SUMMARY OF THE INVENTION An object of the present invention is to display video data without image quality deterioration while increasing the response speed to operations relating to displayed video data.

Video display apparatus according to the present invention is a video display apparatus for displaying an image data acquired from an external device to the display means, for changing the display range of the first video data to be displayed on said display means when receiving a predetermined instruction, a generating means for generating a second video data corresponding to the display range of the first video data changed in accordance with the predetermined instruction, changes in response to the predetermined instruction communicating means for transmitted the third instructions because the processing for generating the image data to perform the external device corresponding to the display range of the first image data to said external device, said predetermined instruction Control means for controlling the display means so that the third video data is displayed on the display means, wherein the control means receives the third video data from the external device. put in until it is acquired Period, the second video data shall be the controls said display means to be displayed on the display means.

The program according to the present invention includes the step of displaying the image data acquired from an external device to the display unit, the predetermined instruction for changing the display range of the first video data to be displayed on said display means If it received, and generating a second image data corresponding to the display range of the first video data changed in accordance with the predetermined instruction, the first that have been changed according to the predetermined instruction when receiving and transmitting an indication of the order to perform the processing for generating a third video data corresponding to the display range of the image data to the external device to the external device, the predetermined instruction, the a step of the third image data to control the display means to be displayed on the display unit, the period in up to the third image data is acquired from the external device, the second video data It is a program for executing and controlling the display means to be displayed on the display unit to the computer.

According to the present invention, it is possible to display video data without degrading image quality while increasing the response speed to an operation related to the displayed video data.

  A first embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an example of a system configuration to which the present invention can be applied. The photo printer 101 and the digital television 201 are connected by an HDMI cable 501 compliant with the HDMI (High-Definition Multimedia Interface) standard. The digital television 201 is a television receiver that can display a digital video signal input via the HDMI cable 501. Bidirectional control can be performed between the photo printer 101 and the digital television 201 by using CEC (Consumer Electronics Control), which is a device control protocol compliant with the HDMI standard.

  The remote control commander 301 is provided with a button as an operator. When this button is pressed, a command corresponding to the pressed button is modulated into an infrared signal or a radio wave and transmitted. Hereinafter, the remote control commander 301 is abbreviated as a TV remote controller 301. A signal transmitted from the TV remote control 301 is received by the receiving unit 250 of the digital TV 201. That is, the digital television 201 and the television remote controller 301 can communicate with each other by wireless communication means such as radio waves and infrared signals. The user can control the operation of the digital television 201 by operating the television remote controller 301.

  The photo printer 101 includes a paper supply / discharge unit 602, a memory card slot unit 402, an operation unit 104, and a display unit 110. The paper supply / discharge unit 602 supplies and discharges the recording paper 601. The memory card slot 402 is loaded with a memory card 401 so that it can be inserted and removed. The memory card 401 stores, for example, image data taken with a digital camera. The operation unit 104 includes buttons and other controls, and accepts user operations on the photo printer 101. The display unit 110 includes, for example, an LCD (Liquid Crystal Display), and displays image data, a menu screen, and the like. The photo printer 101 can output a video signal based on HD video to the digital television 201 which is an external display device via the HDMI cable 501.

  When the photo printer 101 is connected to the digital television 201 via the HDMI cable 501, mutual device authentication using EDID (Extended Display Identification) is performed. During the device authentication, information indicating the display resolution of the digital television 201 is transmitted from the digital television 201 to the photo printer 101. The photo printer 101 is set to output a signal having an optimal resolution to the connected digital television 201 based on the received information indicating the resolution.

  FIG. 2 shows an example of the configuration of the photo printer 101 applicable to the first embodiment of the present invention. In the photo printer 101, a memory 103, an operation unit 104, an image / audio data processing unit 105, and a print control unit 108 are connected to the printer control unit 102, and a control signal processing unit 123 in the HDMI signal processing unit 120 is connected. Is connected. In the photo printer 101, an interface 106, a print control unit 108, a video generation unit 109, a display unit 110, and a speaker 111 are further connected to the image / audio data processing unit 105.

  In the photo printer 101, the HDMI signal processing unit 120 includes a video signal processing unit 121, an audio signal processing unit 122, a control signal processing unit 123, and an HDMI transmission / reception unit 124. By connecting the HDMI cable 501, the HDMI signal processing unit 120 can perform bidirectional communication of control commands such as output of video signals and audio signals to an external display device that supports HDMI, and a CEC command.

  A printer control unit 102 as a control unit and a region setting unit controls all operations in the photo printer 101 in an integrated manner. The printer control unit 102 includes, for example, a CPU and a ROM, and operates using the memory 103 as a work memory according to a program stored in advance in the ROM, and controls each unit of the photo printer 101. For example, the printer control unit 102 controls the entire photo printer 101 so that an operation instructed by the user such as an operation command corresponding to an operation performed on the operation unit 104 or a system setting command is executed. .

  The operation unit 104 is provided with various operators such as a power switch, a menu screen operation key, a print button, and a print image enlargement / reduction button, and serves as a user interface in the photo printer 101.

  The memory 103 is used as a work memory when the printer control unit 102 controls the photo printer 101 as described above, and also stores print setting information such as a print size, the number of prints, and print quality.

  The image / audio data processing unit 105 includes, for example, a memory, performs predetermined processing on the image data read from the memory card 401 using the memory, and displays the data in a format that the display unit 110 can display. To supply. For example, if the image data read from the memory card 401 is compressed and encoded by the JPEG (Joint Photographic Experts Group) method, the compressed code is decoded to be supplied to the display unit 110.

  The image / audio data processing unit 105 has a function of generating a thumbnail image used when displaying an index screen or the like on the display unit 110. Further, the image / audio data processing unit 105 has a function of performing a slide show reproduction for continuously displaying the image data recorded on the memory card 401. Furthermore, the image / audio data processing unit 105 has a function of performing image editing such as enlargement, reduction, rotation, and color inversion of image data displayed on the display unit 110 and video data output to the external display device. The image / audio data processing unit 105 can generate image data for displaying an OSD (On Screen Display).

  On the other hand, if audio data is stored in the memory card 401, the image / audio data processing unit 105 can read out the audio data from the memory card 401 and output it to the speaker 111. If the audio data read from the memory card 401 is compressed and encoded by a predetermined method, the image / audio data processing unit 105 decodes and outputs the compressed code and supplies it to the speaker 111. For example, MP3 (Moving Pictures Experts Group 1 Audio Layer 3) system can be applied as a compression encoding system for audio data. Thereby, for example, music can be played back during slide show playback. The image / audio data processing unit 105 can transfer image and audio data for outputting video and audio to an externally connected device.

The print control unit 108 controls the printing mechanism unit 107 in accordance with a command supplied from the printer control unit 102 and performs printing on the recording paper 601. For example, when a print start command is issued from the operation unit 104 in response to an operation on the operation unit 104, the printer control unit 102 transmits a print start command to the print control unit 108. In response to the print start command, the print control unit 108 reads the print setting information from the memory 103 and controls the print mechanism unit 107 in accordance with the read print setting information. The printing mechanism unit 107 performs feeding and discharging of the recording paper 601 and ejection of color ink according to the control of the printing control unit 108. Printing control unit 108 and the printing mechanism part 107 constitute a printing means cooperate.

  The display unit 110 includes, for example, an LCD (Liquid Crystal Display) and a drive circuit for driving the LCD. An image, an index screen, a slide show, a print setting screen, a menu screen, and the like are appropriately displayed on the display unit 110 according to a user operation on the operation unit 104.

  The video generation unit 109 generates HD video to be output to the external display device from the image data and OSD data supplied from the image / audio data processing unit 105. The video generation unit 109 can generate video data for displaying HD video with a signal that matches the display resolution of the external display device connected by the HDMI cable 501.

  Each of the video signal processing unit 121 and the audio signal processing unit 122 converts the supplied video data and audio data into data conforming to the HDMI standard, and is connected to, for example, an external HDMI cable 501 via the HDMI transmission / reception unit 124. Send to display device. The video signal processing unit 121 and the HDMI transmission / reception unit 124 cooperate to constitute a video signal output unit.

  The control signal processing unit 123 transmits and receives control signals such as CEC commands conforming to the HDMI standard. For example, the CEC command is supplied from the printer control unit 102 to the HDMI transmission / reception unit 124 via the control signal processing unit 123, and is transmitted from the HDMI transmission / reception unit 124 to the external display device connected by the HDMI cable 501. Further, the CEC command received by the control signal processing unit 123 via the HDMI transmission / reception unit 124 is passed to the printer control unit 102, for example. The control signal processing unit 123 and the HDMI transmission / reception unit 124 cooperate to configure a communication unit.

  The CEC includes a command Vender Specific Commands that can define a maker-specific command in addition to the command defined as the standard command.

  Next, normal zoom processing in the photo printer 101 will be described with an example of enlargement. In the photo printer 101, when the image is displayed on the display unit 110, the user can operate the enlarge button on the operation unit 104 to enlarge the display image. It is assumed that image data to be displayed on the display unit 110 is stored in a memory included in the image / audio data processing unit 105, for example.

  In response to an operation on the operation unit 104, an enlargement instruction command is supplied from the operation unit 104 to the printer control unit 102. The printer control unit 102 transmits an enlargement command to the image / audio data processing unit 105 in response to the enlargement instruction command. At this time, enlargement setting information such as the enlargement magnification and the coordinates of the display area is transmitted to the image / audio data processing unit 105 together with the enlargement command. The enlargement setting information is determined by, for example, the button type of the operation unit 104, the number of times the button is pressed, the pressing time, and the like.

  When the image / sound data processing unit 105 receives the enlargement command, the image / sound data processing unit 105 extracts a region to be displayed from the image data based on the received enlargement setting information, converts it into data that can be displayed on the display unit 110, and outputs it. In addition, the image / audio data processing unit 105 supplies pixel data of an area extracted based on the enlargement setting information to the video generation unit 109, so that the area (output area) of the area enlarged according to the operation on the operation unit 104 can be obtained. The video can be output to an external device (external display device). In general, the number of pixels of the display unit 110 is smaller than the number of pixels of the image data, so that the image quality does not deteriorate until the same size display is performed.

  In the case of the same size display, a region corresponding to the number of pixels of the display unit 110 is extracted from the image data. On the other hand, when the display unit 110 displays an area smaller than the same size display, that is, a larger area than the case of the same size display in the image data, the number of pixels of the extracted area matches the number of pixels of the display unit 110. Perform the conversion process.

  Further, it is conceivable that the region to be displayed is extracted so as to be centered with the video displayed on the display unit 110, for example. The same applies to the reduction of video.

FIG. 3 shows an exemplary configuration of the digital television 201 applicable to the first embodiment of the present invention. In the digital television 201, a memory 203, an operation unit 204, a remote control reception unit 205, a video setting unit 206, a selector 209, a digital broadcast signal processing unit 210, and an HDMI signal processing unit 220 are connected to the television control unit 202. The digital broadcast signal processing unit 210 includes a tuner 211, a signal analysis unit 212, a video decoding unit 213, and an audio decoding unit 214. The HDMI signal processing unit 220 includes an HDMI transmission / reception unit 221, a video signal processing unit 222, an audio signal processing unit 223, and a control signal processing unit 224. The control signal processing unit 224 is connected to the television control unit 202.

  The digital television 201 as a video display device has a function of receiving digital broadcast signals and reproducing video and audio, and a function of reproducing video and audio input from the outside via the HDMI cable 501.

  A digital broadcast signal processing system in the digital television 201 will be described. A digital broadcast signal received by the antenna 260 is supplied to the tuner 211. The tuner 211 sends a signal of a predetermined channel selected to the signal analysis unit 212. The signal analysis unit 212 detects video data and audio data from the digital broadcast signal supplied from the tuner 211. The video data and audio data detected by the signal analysis unit 212 are compressed data that has been compression-encoded in accordance with digital broadcasting standards. For example, MPEG2 (Moving Pictures Experts Group 2) is used as the compression encoding method.

  The compressed video data and compressed audio data detected by the signal analysis unit 212 are supplied to the video decoding unit 213 and the audio decoding unit 214, respectively. The video decoding unit 213 decodes the compression code of the supplied compressed video data, converts it into video data that can be displayed by the video display unit 207, and outputs the video data. The video data output from the video decoding unit 213 is supplied to the selector 209. Similarly, the audio decoding unit 214 decodes the compression code of the supplied compressed audio data, converts it into audio data that can be reproduced by the audio reproduction unit 208, and outputs the audio data. The audio data output from the audio decoding unit 214 is supplied to the selector 209.

  An HDMI signal processing system in the digital television 201 will be described. The HDMI signal transmitted via the HDMI cable 501 is received and analyzed by the HDMI transmission / reception unit 221. The HDMI signal is divided into a video signal, an audio signal, and a control signal by the HDMI transmission / reception unit 221, converted into data of a format that can be processed by the video signal processing unit 222, the audio signal processing unit 223, and the control signal processing unit 224, respectively, and transmitted. Is done. The video signal processing unit 222 and the audio signal processing unit 223 perform predetermined signal processing on the supplied video data and audio data, respectively, and supply the result to the selector 209.

  The HDMI transmission / reception unit 221 and the video signal processing unit 222 cooperate to constitute a video signal input unit. Also, the HDMI transmission / reception unit 221 and the video signal processing unit 222, the video signal processing unit 121, the HDMI transmission / reception unit 124, and the HDMI cable 501 cooperate to constitute a video signal transmission unit.

  The control signal processing unit 224 analyzes EDID data for performing inter-device authentication and a CEC command for bidirectional control on the control signal supplied from the HDMI transmitting / receiving unit 221. The HDMI transmitting / receiving unit 221 and the control signal processing unit 224 cooperate to configure a communication unit.

  The selector 209 appropriately selects data supplied from the digital broadcast signal processing unit 210 and the HDMI signal processing unit 220 according to the current display setting, and outputs them to the video display unit 207 and the audio playback unit 208, respectively. The video data output from the selector 209 is supplied to the video display unit 207 via the video setting unit 206.

  The sound reproduction unit 208 includes a sound processing unit that performs sound processing such as sound quality adjustment on the supplied sound data and amplification processing, and a speaker. The video display unit 207 is a video processing unit that performs color tone adjustment and contrast adjustment on the supplied video data, a display unit such as an LCD or PDP (Plasma Display Panel), and a display unit for driving the display unit based on the video data. And a drive unit.

  The video setting unit 206 performs display settings for the video data selected by the selector 209. The display settings here include video processing such as enlargement processing, reduction processing, rotation processing, color inversion processing, brightness and contrast change processing for video data, and generation and composition of OSD data for displaying channel names and TV setting contents. Processing.

  For example, the video setting unit 206 has a memory, temporarily stores the supplied video data in the memory, and performs the various display setting processes described above on the video data on the memory. The video data subjected to the display setting process is stored again in the memory. Then, the video data is read from the memory and supplied to the video display unit 207. The video setting unit 206 and the television control unit 202 cooperate to constitute display area changing means.

  A television control unit 202 as a control unit controls all operations in the digital television 201 in an integrated manner. The television control unit 202 has, for example, a CPU and a ROM, and operates using the memory 203 as a work memory in accordance with a program stored in advance in the ROM, thereby controlling the entire digital television 201. For example, the television control unit 202 performs an operation instructed by the user such as an operation on the operation unit 204, an operation command according to a signal transmitted from the TV remote control 301, or a system setting command. Is controlling the whole.

  The remote control receiving unit 205 receives a signal transmitted from the TV remote control 301 and outputs a command based on the received signal. For example, the remote control receiving unit 205 receives a infrared signal and converts it into an electrical signal, and converts the signal output from the light receiving unit into a command that can be interpreted by the television control unit 202 and output it. Part. The command output from the remote control receiving unit 205 is supplied to the television control unit 202. The TV remote control 301 and the remote control receiving unit 205 cooperate to constitute a user operation receiving means.

  The operation unit 204 is provided with various operators used for operating the digital television 201, such as a power switch, a channel selection button, a volume adjustment button, and a menu screen operation button. The operation unit 204 outputs a command corresponding to the operation on the operation element. The command output from the operation unit 204 is supplied to the television control unit 202.

A power supply unit 230 is further connected to the television control unit 202. The power supply unit 230 supplies power to each unit of the digital television 201 under the control of the television control unit 202. The power supply unit 230 supplies power to a part of the digital TV 201 until, for example, a power ON operation is performed on a power button of the TV remote control 301 described later. Thereby, the digital television 201 is set in a standby state. In the standby state, for example, it is conceivable to supply power only to the parts necessary for the digital television 201 to return from the standby state, such as the television control unit 202, the remote control reception unit 205, the memory 203, and the HDMI transmission / reception unit 221.

  FIG. 4 schematically shows an appearance of an example of a TV remote control 301 for remotely operating the digital TV 201. The television remote control 301 is provided with a plurality of buttons as shown. The TV remote control 301 generates a remote control command corresponding to the button operated by the user, modulates the remote control command into an infrared signal, and transmits the infrared signal. However, the present invention is not limited to this, and the remote control command may be modulated into a radio wave and transmitted. In this case, the remote control receiving unit 205 is configured to receive a signal transmitted as a radio wave. Hereinafter, only buttons that are deeply related to the present invention will be described.

  The power button 310 is a button for returning the standby state of the digital television 201 described above. In FIG. 4, a button group including an input switching button for switching the selector 209 is disposed below the power button 310, and four-way buttons 311, 311, 311, 311 are disposed below the button group. The four-direction buttons 311, 311, 311, 311 can respectively specify the up / down / left / right directions. A channel designation button group for instructing channel selection by the tuner 211 is arranged below the four-way buttons 311, 311, 311, 311. A channel number increase / decrease button group and a volume adjustment button group are arranged below the channel designation button group. The

  In FIG. 4, a zoom-in button 312 and a zoom-out button 313 for requesting zoom-in and zoom-out of the display image are arranged below the channel number increase / decrease button group and the volume adjustment button group. When the zoom-in button 312 is pressed, the digital television 201 is requested to display an enlarged image being displayed. When the zoom-out button 313 is pressed, the digital television 201 is requested to reduce the displayed video. The display area changing operation by the user is accepted by the four-direction buttons 311, 311, 311, 311, the zoom-in button 312 and the zoom-out button 313.

  Further, a print button 314 is arranged on the left side of the zoom-out button 313 in FIG. By pressing the print button 314, the digital television 201 can be requested to print to a printer connected via the HDMI cable 501.

  Next, normal zoom processing of the digital television 201 will be described by taking the case of enlargement as an example. In the digital television 201, when the video is displayed on the display unit, the user can enlarge the display video by operating the zoom-in button 312 of the TV remote control 301, for example.

  In response to pressing of the zoom-in button 312 on the TV remote control 301, an enlargement instruction command is transmitted from the TV remote control 301 to the digital TV 201. This enlargement instruction command is received by the remote control receiving unit 205 of the digital television 201 and supplied to the television control unit 202. In response to the enlargement instruction command, the television control unit 202 transmits a video enlargement command to the video setting unit 206. At this time, enlargement setting information such as an enlargement magnification and display area coordinates is also transmitted. The enlargement setting information is determined by the type of button on the TV remote control 301, the number of times of pressing, the time during which the pressed state is maintained, and the like.

  The video setting unit 206 performs electronic zoom processing on the video signal supplied from the selector 209. In the electronic zoom process, a pixel is generated according to the enlargement magnification based on each pixel in the horizontal direction and the vertical direction of the video data, and an enlargement process for enlarging a partial area of the video is performed. The generation of a pixel corresponding to the enlargement magnification is performed by an interpolation process for the original pixel. Therefore, the image quality of the enlarged video is degraded with respect to the image quality of the original video. The video data enlarged by the video setting unit 206 is supplied to the video display unit 207 and displayed.

  It should be noted that while the zoom-in button 312 of the TV remote control 301 is continuously pressed and held down, the enlargement command at the next enlargement magnification is issued when the enlargement process in one enlargement command is completed. In this case, the enlargement magnification is updated by the television control unit 202, for example.

  In addition, it is conceivable that a part of the image to be enlarged by the enlargement process is centered on the image displayed on the display unit. The same applies to video reduction.

  Next, video enlargement processing according to the first embodiment will be described. The first embodiment relates to an enlargement process when a video based on a video signal output from the photo printer 101 connected to the digital television 201 via the HDMI cable 501 is displayed.

  A video based on the video data output from the photo printer 101 connected via the HDMI cable 501 is displayed on the digital television 201. For example, the zoom-in button 312 of the TV remote control 301 is pressed to request the digital TV 201 to enlarge the display image. While the state in which the zoom-in button 312 is pressed is maintained, the digital television 201 enlarges the display image by the image enlargement function of the digital television 201, that is, the normal zoom processing of the digital television 201 described above. .

  When the push-down state of the zoom-in button 312 is released, a command is issued from the digital television 201 to the photo printer 101 so that the image enlargement process is performed at the magnification at the time when the push-down state of the zoom-in button 312 is released. Sent. In response to this command, the photo printer 101 performs an enlargement process on the image data by the image enlargement function of the photo printer 101, that is, the normal zoom process in the photo printer 101 described above. The enlarged video data is transmitted from the photo printer 101 to the digital television 201.

  Since the image enlargement process corresponding to the final enlargement magnification is performed on the photo printer 101 side, an enlarged image with little deterioration in image quality can be obtained. Further, while the zoom-in button 312 is kept pressed, enlargement processing is performed on the digital television 201 side, so there is no need to send an enlargement instruction command to the photo printer 101 during that time. Therefore, it is possible to reduce a communication loss between devices due to transmission of the enlargement instruction command, and it is possible to improve a response to a user operation.

  The first embodiment can be applied not only to video enlargement processing based on video data transmitted from the photo printer 101 but also to video reduction processing, scroll processing, and the like. In the following, a video enlargement process based on video data transmitted from the photo printer 101 will be described as an example.

  5 and 6 show an example of a control sequence at the time of enlargement processing in the system configuration of FIG. 1 described above. FIG. 5 shows an exemplary operation of the photo printer 101 and the digital television 201 when the power of the photo printer 101 is turned on. It is assumed that the photo printer 101 and the digital television 201 are connected via the HDMI cable 501 prior to the sequence of FIG.

  First, the user operates the operation unit 104 of the photo printer 101 to turn on the power of the photo printer 101 (step S101). In response to this operation, power is supplied to each unit in the photo printer 101, and the photo printer 101 is activated. When the photo printer 101 is activated, the printer control unit 102 of the photo printer 101 issues a CEC command requesting to turn on the power of the digital television 201. This CEC command is transmitted to the digital television 201 via the control signal processing unit 123 (step S102). At this time, device authentication by EDID can be performed.

  The power-on request CEC command transmitted from the photo printer 101 is received by the control signal processing unit 224 of the digital television 201 and passed to the television control unit 202. In response to the received CEC command, the television control unit 202 controls the power supply unit 230 to turn on the digital television 201. When the power of the digital television 201 is turned on, power is supplied to each part of the digital television 201 and the activation of the digital television 201 is started (step S103). Thereafter, the television control unit 202 issues a CEC command indicating completion of power ON. The CEC command is transmitted to the photo printer 101 via the control signal processing unit 224 (step S104). This CEC command is received by the control signal processing unit 123 of the photo printer 101 and passed to the printer control unit 102.

  After starting the system in response to a power-on request from the photo printer 101, the digital television 201 inquires of the photo printer 101 whether the photo printer 101 has a video enlargement function (step S105). For example, the TV control unit 202 issues a CEC command for inquiring whether or not the photo printer 101 has a video enlargement function. This CEC command is transmitted to the photo printer 101 via the control signal processing unit 224.

  The transmitted CEC command is received by the control signal processing unit 123 of the photo printer 101 and transferred to the printer control unit 102. Upon receiving this CEC command, the printer control unit 102 issues a CEC command for returning the presence / absence of the enlargement function to the digital television 201. This CEC command is transmitted to the digital television 201 via the control signal processing unit 224 (step S106). Here, it is assumed that the photo printer 101 has a video enlargement function.

  In step S107, the activation process of the digital television 201 is completed and the standby state is set. The television control unit 202 of the digital television 201 transmits a CEC command for requesting the start of video and audio output to the photo printer 101 via the control signal processing unit 224 (step S108). This CEC command is received by the control signal processing unit 123 of the photo printer 101 and passed to the printer control unit 102. In response to the received CEC command, the printer control unit 102 instructs the image / audio data processing unit 105 to prepare the digital television 201 to start outputting video and audio signals.

  When the output preparation of the video signal and the audio signal is completed, the printer control unit 102 issues a CEC command for notifying the digital television 201 that the preparation for starting the output of the video signal and the audio signal is completed. This CEC command is transmitted to the digital television 201 via the control signal processing unit 123 (step S109). The transmitted CEC command is received by the control signal processing unit 224 of the digital television 201 and passed to the television control unit 202. Then, video data and audio data are output from the photo printer 101 (step S110), and transmitted to the digital television 201 via the HDMI cable 501.

  These video data and audio data are received by the HDMI transmission / reception unit 221 in the digital television 201 and supplied to the video signal processing unit 222 and the audio signal processing unit 223, respectively. The video data and audio data that have been subjected to predetermined processing by the video signal processing unit 222 and the audio signal processing unit 223 are supplied to the selector 209, the audio data is supplied to the audio reproduction unit 208, and the video data is the video setting unit 206. To the video display unit 207.

  FIG. 6 illustrates the photo printer 101 and the digital television 201 when the video output from the photo printer 101 and displayed on the digital television 201 as described with reference to FIG. An example of the operation will be described.

  When the user presses the zoom-in button 312 of the television remote control 301 (step S201), an enlargement instruction command for requesting enlargement of the image being displayed on the digital television 201 is issued in the television remote control 301 (step S202). This enlargement instruction command is, for example, modulated into an infrared signal and transmitted from the TV remote control 301, received by the remote control receiving unit 205 of the digital TV 201, demodulated to a predetermined level, and supplied to the TV control unit 202.

  In response to the supplied enlargement instruction command, the television control unit 202 issues a CEC command for inquiring whether or not the video currently output from the photo printer 101 is a video that can be enlarged. This CEC command is transmitted from the control signal processing unit 224 and is transmitted to the photo printer 101 via the CEC line of the HDMI cable 501 (step S203). This CEC command is received by the control signal processing unit 123 of the photo printer 101 and passed to the printer control unit 102.

  Upon receiving this CEC command, the printer control unit 102 issues a CEC command indicating whether enlargement processing can be performed on the currently output video, and transmits the CEC command to the digital television 201 via the control signal processing unit 123 (step S204).

  Whether or not enlargement processing is possible is determined based on whether or not enlargement processing is possible when the operation unit 104 of the photo printer 101 is operated. As an example, if the photo printer 101 is set to be incapable of enlarging during index display or setting menu display, enlarging processing is not possible if the currently output video is an image for index display or setting menu display. It is judged that. Note that the index display is, for example, a reduction of images stored in the memory card 401, thumbnail display, and a list display. The setting menu display is a display for performing various settings for the photo printer 101, for example.

  If it is determined that the currently output video can be enlarged, the printer control unit 102 controls the video generation unit 109 to hide the OSD video generated by the video generation unit 109 (step S205). ). This is to prevent the OSD display of the photo printer 101 from being enlarged when the enlargement process is performed by the digital television 201 as will be described later.

  The CEC command transmitted from the photo printer 101 in step S <b> 204 and indicating whether or not enlargement processing is possible is received by the control signal processing unit 224 of the digital television 201 and passed to the television control unit 202. If the received CEC command indicates that enlargement processing is possible, the television control unit 202 issues a CEC command requesting the photo printer 101 to stop outputting the video signal. This CEC command is transmitted to the photo printer 101 via the control signal processing unit 224 (step S206).

  This CEC command for requesting the output stop of the video signal is received by the control signal processing unit 123 of the photo printer 101 and is passed to the printer control unit 102. Based on the received CEC command, the printer control unit 102 requests the video signal processing unit 121 to stop video output. In response to this request, the video signal processing unit 121 stops outputting the video signal (step S207). When the output of the video signal is stopped, the printer control unit 102 issues a CEC command indicating that the stop of the output of the video signal is completed. This CEC command is transmitted to the digital television 201 via the control signal processing unit 123 (step S208).

  A CEC command indicating that the output stop of the video signal is completed is received by the control signal processing unit 224 of the digital television 201 and passed to the television control unit 202. In response to the received CEC command, the television control unit 202 performs video data enlargement processing by normal zoom processing in the digital television 201 as described above. The TV control unit 202 issues a video data enlargement command to the video setting unit 206, and the video setting unit 206 performs an actual enlargement process (step S209).

  The enlargement process in step S209 is performed, for example, by performing the normal electronic zoom process in the photo printer 101 described above on the video signal output immediately before reception of the CEC command transmitted from the photo printer 101 in step S207. Made. For example, in the video setting unit 206, the video signal stored in the memory included in the video setting unit 206 is subjected to interpolation processing based on each pixel in the horizontal direction and the vertical direction of the video signal according to the enlargement magnification. To enlarge a part of the image.

  The enlargement process in step S209 is repeatedly performed while the user continues to press the zoom-in button 312 of the TV remote control 301 and the pressed state of the button is maintained. As an example, while the zoom-in button 312 is continuously pressed, each time the enlargement process is completed, the enlargement magnification is sequentially increased stepwise and the enlargement process is repeatedly performed. In this case, the television control unit 202 can know the enlargement magnification by counting the number of executed enlargement processes. Further, it is possible to know the position information of the display area with respect to the original video data based on the enlargement magnification. When the user releases the zoom-in button 312 and the pressed state of the button is released, the final enlarged display area is determined.

  When the pressed state of the zoom-in button 312 is released (step S210), a notification to that effect is sent from the TV remote control 301 to the TV control unit 202 of the digital TV 201 (step S211). For example, the television control unit 202 can know that the pressed state of the zoom-in button 312 has been released when the infrared signal including the enlargement command transmitted from the television remote controller 301 is stopped. Not limited to this, the television remote controller 301 may transmit a command indicating that the zoom-in button 312 has been pressed and a command indicating that the pressing has been released.

  When the release of the pressed-down state of the zoom-in button 312 is notified, the television control unit 202 notifies the photo printer 101 of information indicating the enlarged display area when the pressed-down state of the zoom-in button 312 is released, and a display image. Information is transmitted (step S212). The information indicating the enlarged display area and the display image information are transmitted as, for example, a CEC command.

  Note that the display image information here refers to enlargement magnification information, display area position information with respect to the original video signal, setting information such as aspect ratio and resolution. When a photo printer 101 cuts out an enlarged area from image data to generate a video, the area cut out from the image data on the photo printer 101 side can be determined based on this display image information.

  Display image information transmitted from the digital television 201 is received by the control signal processing unit 123 of the photo printer 101 and transferred to the printer control unit 102. Upon receiving the display image information, the printer control unit 102 causes the video generation unit 109 to calculate the coordinates of the area to be cut out from the original image data based on the display image information (step S213). When the region to be clipped is determined, the video generation unit 109 extracts the data of the region to be clipped from the image data output from the image / audio data processing unit 105 (step S214).

The video generation unit 109 generates HD video to be output to the digital television 201 based on the image data of the extracted area (step S215). The image data used for generating the HD video is data generated by extracting a display area from the original image data. Therefore, the generated HD video is a higher definition video than the video that has been electronically zoomed by the digital television 201. When the HD video with the enlarged image is generated by the video generation unit 109, the OSD display hidden in step S205 is displayed again (step S216). Then, the printer control unit 102 issues a CEC command indicating that the video output preparation is completed, and transmits this CEC command to the digital television 201 via the control signal processing unit 123 (step S217) .
In the digital television 201, a CEC command for completion of video output preparation is received by the control signal processing unit 224 and passed to the television control unit 202. The television control unit 202 turns off the enlargement function of the digital television 201 according to the received CEC command (step S218). This is to prevent further enlargement processing from being performed on the video output from the photo printer 101 thereafter. In this case, the video display unit 207 to be kept to display the enlarged processed image at step S20 9 described above. For example, the input of the video data to the video setting unit 206 is stopped, and the image data stored in the memory included in the video setting unit 206 is supplied to the video display unit 207.

  Thereafter, the digital television 201 transmits a CEC command for requesting the start of video output to the photo printer 101 (step S219), and the photo printer 101 starts outputting video data enlarged in accordance with the CEC command. (Step S220). In the photo printer 101, the printer control unit 102 controls to start outputting video data and issues a CEC command requesting the digital television 201 to switch video display. This CEC command is transmitted to the digital television 201 via the control signal processing unit 123 (step S221).

  The digital television 201 performs control to supply the video signal output from the photo printer 101 to the video display unit 207 in response to the CEC command of the video display switching request (step S222).

  As an example, in the digital television 201, a CEC command for a video display switching request is received by the control signal processing unit 224 and passed to the television control unit 202. In response to the CEC command, the television control unit 202 starts supplying video data to the video setting unit 206. The enlarged video data output from the photo printer 101 is received by the video signal processing unit 222 via the HDMI transmission / reception unit 221 and processed in a predetermined manner. The video data output from the video signal processing unit 222 and enlarged by the photo printer 101 is supplied to the video setting unit 206 via the selector 209 and stored in the memory. The video setting unit 206 reads out the video data enlarged by the photo printer 101 from the memory and supplies it to the video display unit 207.

  Note that it may be determined that the enlargement process is not possible for the CEC command transmitted from the digital television 201 in the above-described step S203 and inquiring whether the enlargement process is possible. In this case, the photo printer 101 transmits to the digital television 201 a CEC command indicating that enlargement processing is not possible in step S204 of FIG. Then, it is conceivable that the zoom processing is executed by the video setting unit 206 of the digital television 201 without performing the processing in step S205 and subsequent steps.

  In the above description, the video enlargement processing has been described. However, this is not limited to this example, and the first embodiment is suitable for use in video reduction processing, scroll processing, and the like. . The reduction process is performed, for example, by pressing a zoom out button 313 of the TV remote control 301. Since the operations of the digital television 201 and the photo printer 101 in the reduction process are the same as those in FIGS. 5 and 6 described above, description thereof is omitted.

  In the scroll process, the position of the display area cut out from the original image data is moved with respect to the original image data without changing the magnification of the display image. The scroll process can be performed, for example, by pressing four-way buttons 311, 311, 311, 311 of the TV remote control 301.

  Note that the reduction process and the scroll process may be performed within the range of image data that the digital television 201 has. At this time, image data in a range wider than the display area of the digital television 201 regarding the currently displayed video output from the photo printer 101 may be obtained in advance from the photo printer 101.

  As an example, it is conceivable that the image data that is the source of the video is temporarily reduced to a size corresponding to the number of pixels of the video display unit 207 of the digital television 201 on the photo printer 101 side. On the digital television 201 side, this reduced image data is stored in, for example, the memory of the video setting unit 206, and an area corresponding to the enlargement magnification at the time of scroll processing is cut out and enlarged to the size of the number of pixels of the video display unit 207. It is displayed on the video display unit 207. The scrolling process is performed by moving the area cut out from the image data stored in the memory in response to pressing of the four-way buttons 311, 311, 311, 311.

  The scroll process is repeatedly performed while the user continues to press any one of the four-way buttons 311, 311, 311, 311 of the television remote controller. As an example, while any one of the four-way buttons 311 is continuously pressed, the display area is moved in units of predetermined pixels so that the display image moves in the direction indicated by the pressed four-way button. When one movement for a predetermined pixel is completed, the next movement is performed. In this case, the television control unit 202 can know the position information of the display area with respect to the original video data by counting the number of movements performed.

  When pressing of the four-way buttons 311, 311, 311, 311 is released, information indicating an enlarged display area and display image information are transmitted from the digital television 201 to the photo printer 101. The photo printer 101 extracts an area to be displayed from the original image data based on the received information indicating the enlarged display area and the display image information, and transmits the area to the digital television 201.

  As described above, in the first embodiment of the present invention, when the television remote controller 301 is used to continuously output commands such as enlargement, reduction, and scrolling, corresponding processing is performed on the digital television 201 side. That is, when a command for changing the display area in the original image is continuously output using the operation system on the digital television 201 side, the corresponding processing is performed on the digital television 201 side. When the area to be displayed in the original image is finally determined, the area to be displayed is cut out from the image data on the photo printer 101 side, and HD video is generated and output. Therefore, it is possible to reduce communication loss such as a CEC command between devices due to the display area changing process, and the process associated therewith, and it is possible to make the response to the user operation faster.

  In the first embodiment described above, a photo printer is described as an example of a video output device that outputs video data to the digital television 201, but the present invention can also be applied to other video output devices. For example, it is conceivable to apply a digital camera, a digital video camera, or a mobile phone with a camera function to the video output apparatus according to the first embodiment.

  Next explained is the second embodiment of the invention. According to the second embodiment, in accordance with the method described in the first embodiment described above, the enlargement / reduction and scrolling processing of the image is performed by the operation on the digital television 201 side, and the final image data on the photo printer 101 side is finalized. Determine the display area. Then, the image data of the determined display area is printed on the photo printer 101 by an operation on the digital television 201 side.

  According to the second embodiment, similar to the first embodiment described above, the response to the user operation in the enlargement, reduction, scrolling process, etc. of the video can be made faster. At the same time, according to the second embodiment, the user can determine the print area and cause the photo printer 101 to perform printing only by an operation on the digital television 201 side.

  In the second embodiment, the system configuration described with reference to FIG. 1 in the first embodiment can be applied as it is. Similarly, the photo printer 101, the digital television 201, and the television remote controller 301 described with reference to FIGS. 2 to 4 in the first embodiment can be applied as they are to the second embodiment. Therefore, in the following, detailed descriptions of these system configurations and the photo printer 101, the digital television 201, and the television remote controller 301 are omitted.

  It is assumed that the photo printer 101 applied to the second embodiment has a printing function. For example, the image data processed by the image / audio data processing unit 105 is supplied to the print control unit 108 in accordance with a command from the printer control unit 102. The print control unit 108 controls the printing mechanism unit 107 based on the control of the printer control unit 102 to print image data on the recording paper 601.

  Also, the photo printer 101 can enlarge the specified area of the image data to a predetermined size and display it on the display unit 110, and can cut out the area displayed on the display unit 110 from the original image data for printing. Has been. This is called trimming printing.

  Furthermore, the television remote controller 301 applied to the second embodiment can transmit a print request using the print button 314 described above. Further, it is assumed that the television remote controller 301 can transmit a signal for instructing creation of DPOF (Digital Print Order Format) information by a button or a group of buttons (not shown). The DPOF information includes print number, print type, number of copies, image data format, image data path information, and editing information for image data such as trimming and rotation.

  7 and 8 show a control sequence of an example of the printing process in the second embodiment. In the description of FIGS. 7 and 8, the description of the portions common to those described with reference to FIGS. 5 and 6 is omitted as appropriate.

  FIG. 7 shows an example of operations of the photo printer 101 and the digital television 201 when the power of the photo printer 101 is turned on. It is assumed that the photo printer 101 and the digital television 201 are connected via the HDMI cable 501 prior to the sequence of FIG.

  First, the user operates the operation unit 104 of the photo printer 101 to turn on the power of the photo printer 101 (step S301), and the photo printer 101 is activated. When the photo printer 101 is activated, a CEC command requesting to turn on the power of the digital television 201 is transmitted from the photo printer 101 to the digital television 201 (step S302). At this time, device authentication by EDID can be performed.

  The power-on request CEC command transmitted from the photo printer 101 is received by the digital television 201. In the digital television 201, the power is turned on in response to the received CEC command of the power-on request, and the digital television 201 is started (step S303). Thereafter, a CEC command indicating completion of power ON is transmitted from the digital television 201 to the photo printer 101 (step S304).

  In the digital television 201, the television control unit 202 issues a CEC command for inquiring whether or not the photo printer 101 has a printing function after the system is activated by a power-on request from the photo printer 101. This CEC command is transmitted to the photo printer 101 via the control signal processing unit 224 (step S305). This CEC command is received by the control signal processing unit 123 of the photo printer 101 and passed to the printer control unit 102. Upon receiving this CEC command, the printer control unit 102 issues a CEC command for returning the presence / absence of a printing function to the digital television 201 and transmits it via the control signal processing unit 224 (step S306).

  The CEC command that returns the presence / absence of the printing function is received by the control signal processing unit 224 of the digital television 201 and passed to the television control unit 202. If this CEC command indicates that the photo printer 101 has a printing function, the television control unit 202 issues a CEC command for inquiring whether or not it has a DPOF information creation function. This CEC command is transmitted to the photo printer 101 via the control signal processing unit 224 (step S307).

  A CEC command inquiring whether the photo printer 101 has a DPOF information creation function is received by the control signal processing unit 123 and passed to the printer control unit 102. In response to the CEC command, the printer control unit 102 issues a CEC command indicating the presence or absence of the DPOF information creation function, and transmits the CEC command to the digital television 201 via the control signal processing unit 123 (step S308). Here, it is notified by this CEC command that it has a DPOF information creation function.

When the activation process of the digital television 201 is completed and the standby state is set (step S309), the digital television 201 transmits a CEC command requesting the start of video and audio output to the photo printer 101 (step S310). The photo printer 101 prepares to start outputting video data and audio data to the digital television 201 in response to the CEC command. When the video data and audio data are ready to be output, the photo printer 101 sends a CEC command to the digital television 201 to notify the completion of the video data and audio data output start preparation (step S31 1 ). .

  FIG. 8 illustrates the photo printer 101 and the digital television when the television remote controller 301 is operated to enlarge and / or scroll the image displayed on the video display unit 207 and perform trimming printing corresponding to the display on the video display unit 207. An example operation of 201 is shown.

  While referring to the image displayed on the video display unit 207, the user operates the television remote control 301 to instruct the enlargement of the image (step S401), scrolling (step S402), etc. so that a desired print area can be obtained. To do. The image enlargement processing in step S401 is performed in the same manner as the processing in steps S201 to S211 described with reference to FIG. Similarly, the image scroll processing in step S402 is performed in the same manner as the processing in steps S201 to S211 in FIG. 6 as described above. Here, in order to avoid complexity, the description of the processing in step S401 and step S402 is omitted.

  The processes in steps S401 and S402 can be repeatedly performed in an arbitrary order until the user obtains a desired print area in accordance with the user's operation on the television remote controller 301. As described above, in the second embodiment, enlargement processing and scroll processing for determining a print area are performed using a normal zoom processing function and scroll function in the digital television 201. Therefore, the response to the button operation for instructing enlargement or scrolling can be speeded up, and the user can comfortably perform the operation for determining the print area.

  When the print area desired by the user is obtained, the user presses the print button 314 of the television remote controller (step S403). In response to pressing of the print button 314 on the TV remote control 301, a print instruction command is transmitted from the TV remote control 301 to the digital TV 201 (step S404). This print instruction command is received by the remote control receiving unit 205 of the digital television 201 and supplied to the television control unit 202.

  The TV control unit 202 issues a print request CEC command in response to a print instruction command from the TV remote control 301. The print request CEC command is transmitted from the television control unit 202 to the photo printer 101 via the control signal processing unit 224 (step S405).

  The print request CEC command is received by the control signal processing unit 123 of the photo printer 101 and passed to the printer control unit 102. The printer control unit 102 issues a print request acceptance CEC command in response to the received print request CEC command. The print request acceptance CEC command is transmitted to the digital television 201 via the control signal processing unit 123 (step S406).

  Along with the transmission of the print request acceptance CEC command, the printer control unit 102 controls each unit of the photo printer 101 in a predetermined manner so as to start print preparation in accordance with the received print request CEC command (step S407). For example, the printer control unit 102 controls the print control unit 108 in a predetermined manner and causes the display unit 110 to display status information regarding printing. When the photo printer 101 starts preparation for printing, an icon indicating that printing is in progress may be added to the video data to be transmitted to the digital television 201 as OSD data.

  When the print preparation is started, the printer control unit 102 issues a CEC command for inquiring the display image information to the digital television 201 for the image displayed on the video display unit 207 of the digital television 201 (step S408). The display image information here refers to enlargement magnification information, position information of the display area with respect to the original video signal, setting information such as aspect ratio and resolution. When the photo printer 101 designates a predetermined area in the image data as a print area, the designated print area can be determined based on the display image information.

  A CEC command for inquiring display image information is transmitted to the digital television 201 via the control signal processing unit 123. This CEC command is received by the control signal processing unit 224 of the digital television 201 and passed to the television control unit 202. The television control unit 202 acquires display image information from the video setting unit 206 in accordance with the received CEC command. The video setting unit 206 passes the position information of the display area of the video input to the digital television 201 and displayed on the video display unit 207 to the television control unit 202 as display image information.

  When receiving the display image information, the television control unit 202 issues this display image information as a CEC command. The CEC command of the display image information is transmitted to the photo printer 101 via the control signal processing unit 224 (step S409).

  The CEC command of the display image information is received by the control signal processing unit 123 of the photo printer 101 and passed to the printer control unit 102. The printer control unit 102 passes the display image information received as the CEC command to the image / audio data processing unit 105. Based on the received display image information, the image / audio data processing unit 105 calculates the coordinates of the region to be trimmed and printed from the original image data (step S410). When the coordinate calculation of the print area is completed, the printer control unit 102 issues a print instruction to the print control unit 108 and starts trimming printing in the print area based on the calculated coordinates (step S411).

  In the above description, the print command is issued using the TV remote controller 301 of the digital TV 201. However, this is not limited to this example. For example, a print command may be issued by operating the operation unit 104 of the photo printer 101. The operation after the photo printer 101 receives a print command by operating the operation unit 104 is the same as the operation after step S407 in FIG.

  In the above description, display image information is transmitted from the digital television 201 to the photo printer 101 only when a print command is issued. However, this is not limited to this example. For example, the display image information may be transmitted every time the display area displayed on the video display unit 207 is changed.

  Furthermore, in the above description, the video generated by the video processing on the digital television 201 side is displayed on the video display unit 207 even after the enlargement processing and scroll processing in steps S401 and S402 are completed and the print button 314 is pressed. The This is not limited to this example. For example, when the print button 314 is pressed, the processing in steps S212 to S222 described with reference to FIG. 6 may be performed.

  That is, when the print button 314 is pressed, image data corresponding to the determined print area is generated on the photo printer 101 side and transmitted to the digital television 201. By displaying the image data generated and transmitted by the photo printer 101 on the video display unit 207 on the digital television 201 side, an image corresponding to the print area can be confirmed with high definition.

Furthermore, in FIG. 7, it is conceivable that in step S306 and step S308 , it is confirmed that a device that does not have a print function or DPOF information creation function is connected. In this case, the digital television 201 can be prevented from issuing a CEC command for a print request or DPOF information creation request.

  According to the second embodiment, processing for changing the display area in the original image, such as enlargement, reduction, and scrolling, is performed using a television-side operation system such as the television remote controller 301. Then, trimming printing is performed by transmitting information indicating the display area for the original image to the photo printer 101 on the video output side by a CEC command. Thus, the user can perform trimming printing corresponding to the image displayed on the display unit of the video display device without being aware of which operation system of the video display device and the video output device is operated. It becomes.

  In the second embodiment described above, only the printing operation is described, but this is not limited to this example. For example, in the photo printer 101, DPOF information can be created based on display image information transmitted from the digital television 201. Even when the device connected to the digital television 201 does not have a printing function, DPOF information can be created by acquiring display image information with a CEC command.

  For example, the configuration on the photo printer 101 side of the second embodiment can also be applied to devices capable of video output, such as a digital camera, a digital video camera, and a mobile phone with a camera function. Not limited to this, the photo printer 101 can be realized by a combination of a general personal computer and a printer device.

  In the first and second embodiments described above, HDMI is used as a connection means between the digital television 201 and the photo printer 101. However, other connection means capable of transmitting video and audio and transmitting and receiving bidirectional control commands are used. May be used. For example, it is conceivable that video input to the video display device 100 is performed using the D terminal, and bidirectional communication of commands is performed using the RS-232C interface. In the first embodiment, CEC is used as a bidirectional control command, but it can also be applied to other bidirectional control commands.

  Furthermore, in the first and second embodiments described above, the digital television 201 is described as an example of the video display device that receives and displays the video data output from the photo printer 101. It is not limited. For example, the first embodiment can be applied to other video display devices such as a digital television receiver capable of receiving analog broadcasts, and a monitor device connected to a personal computer.

  The first and second embodiments described above can also be realized in software by a computer (or CPU, MPU, etc.) of a system or apparatus.

  Therefore, in order to implement the first and second embodiments described above with a computer, the computer program itself supplied to the computer also implements the present invention. That is, the computer program itself for realizing the functions of the first and second embodiments is also one aspect of the present invention.

  The computer program for realizing the first and second embodiments described above may be in any form as long as it can be read by a computer. For example, it can be composed of object code, a program executed by an interpreter, script data supplied to the OS, but is not limited thereto.

  The computer program for realizing the first and second embodiments described above is supplied to the computer via a storage medium or wired / wireless communication. Examples of the storage medium for supplying the program include a magnetic storage medium such as a flexible disk, a hard disk, and a magnetic tape, an optical / magneto-optical storage medium such as an MO, CD, and DVD, and a nonvolatile semiconductor memory.

  As a computer program supply method using wired / wireless communication, there is a method of using a server on a computer network. In this case, a data file (program file) that can be a computer program forming the present invention is stored in the server. The program file may be an executable format or a source code.

  Then, the program file is supplied by downloading to a client computer that has accessed the server. In this case, the program file can be divided into a plurality of segment files, and the segment files can be distributed and arranged on different servers.

  That is, a server apparatus that provides a client computer with a program file for realizing the first and second embodiments described above is also one aspect of the present invention.

  In addition, a storage medium that encrypts and stores the computer program for realizing the first and second embodiments described above is distributed, and key information for decryption is supplied to a user who satisfies a predetermined condition, You may permit the installation to the computer which a user has. The key information can be supplied by being downloaded from a homepage via the Internet, for example.

  The computer program for realizing the first and second embodiments described above may use an OS function already running on the computer.

  Furthermore, a part of the computer program for realizing the first and second embodiments described above may be configured by firmware such as an expansion board attached to the computer, or a CPU provided in the expansion board or the like. You may make it perform.

It is a basic diagram which shows an example system configuration which can apply this invention. 1 is a block diagram illustrating a configuration of an example of a photo printer applicable to a first embodiment of the present invention. It is a block diagram which shows the structure of an example of the digital television applicable to 1st Embodiment of this invention. It is a basic diagram which shows roughly the external appearance of an example of the television remote control for remotely operating a digital television. FIG. 6 is a sequence diagram illustrating an example of operations of a photo printer and a digital television when the power of the photo printer is turned on. FIG. 6 is a sequence diagram illustrating an example of operations of a photo printer and a digital television when an image output from a photo printer and displayed on a digital television is enlarged and displayed by operating a television remote controller. FIG. 6 is a sequence diagram illustrating an example of operations of a photo printer and a digital television when the power of the photo printer is turned on. Sequence diagram showing operations of an example of a photo printer and a digital television when an image displayed on the video display unit is operated by operating the TV remote control to be enlarged and / or scrolled and trimmed and printed corresponding to the display on the video display unit It is.

Explanation of symbols

101 Photo Printer 102 Printer Control Unit 104 Operation Unit 105 Image / Audio Data Processing Unit 107 Printing Mechanism Unit 108 Print Control Unit 109 Video Generation Unit 120 HDMI Signal Processing Unit 121 Video Signal Processing Unit 123 Control Signal Processing Unit 124 HDMI Transmission / Reception Unit 201 Digital TV 202 TV control unit 205 Remote control reception unit 206 Video setting unit 207 Video display unit 209 Selector 220 HDMI signal processing unit 221 HDMI transmission / reception unit 222 Video signal processing unit 224 Control signal processing unit 230 Power supply unit 301 TV remote control 301
311 Four-way button 312 Zoom-in button 313 Zoom-out button 314 Print button 501 HDMI cable

Claims (8)

A video display apparatus for displaying an image data acquired from an external device to the display means,
When receiving a predetermined instruction for changing the display range of the first video data to be displayed on the display means, corresponding to the display range of the first video data changed in accordance with the predetermined instruction Generating means for generating second video data;
It transmits an instruction of order to the external device to perform a process for generating a third video data corresponding to the display range of the first image data changed in accordance with the predetermined instruction to the external device Communication means;
Control means for controlling the display means so that the third video data is displayed on the display means when receiving the predetermined instruction;
The control means controls the display means so that the second video data is displayed on the display means during a period until the third video data is acquired from the external device. Video display device. When the predetermined instruction is continuously received, the communication means detects that the predetermined instruction is not received and then performs processing for generating the third video data to the external device. It transmits an instruction of Align order to the external device,
When it is not detected that the predetermined instruction is not received when the predetermined instruction is continuously received, the communication means performs processing for generating the third video data. video display according to claim 1, an instruction order to perform, characterized in that to avoid sending to the external device. The second video data is video data corresponding to first information related to a display range of the first video data changed according to the predetermined instruction ,
The first information includes at least one of information on reduction processing on the first video data, information on enlargement processing on the first video data, and information on coordinates indicating a display range of the first video data. The video display device according to claim 1, further comprising: The third video data is video data corresponding to second information relating to a display range of the first video data changed according to the predetermined instruction ,
The second information indicates reduction processing information for the first video data, enlargement processing information for the first video data, coordinate information indicating a display range of the first video data, and an aspect ratio. The video display device according to claim 1, comprising at least one of information and information indicating resolution.   5. The video display device according to claim 1, wherein the predetermined instruction is an instruction for changing a size of a display range of the first video data. 6.   6. The video display apparatus according to claim 1, wherein the predetermined instruction is an instruction for changing a position of a display range of the first video data. Wherein the external device, the third processing for generating the image data in accordance with an instruction order to perform the external device, characterized by having a generating means for generating said third video data The video display apparatus of any one of Claim 1 to 6. And displaying the image data acquired from an external device to the display means,
When receiving a predetermined instruction for changing the display range of the first video data to be displayed on the display means, corresponding to the display range of the first video data changed in accordance with the predetermined instruction Generating second video data;
It transmits an instruction of order to the external device to perform a process for generating a third video data corresponding to the display range of the first image data changed in accordance with the predetermined instruction to the external device Steps,
When receiving the predetermined instruction, controlling the display means such that the third video data is displayed on the display means;
A program for causing a computer to execute a step of controlling the display means so that the second video data is displayed on the display means during a period until the third video data is acquired from the external device. .

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