Patent Publication Number: US-11647282-B2

Title: Digital camera with printer

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a Continuation of PCT International Application No. PCT/JP2019/044616 filed on Nov. 14, 2019, which claims priority under 35 U.S.C. § 119(a) to Japanese Patent Application No. 2019-048521 filed on Mar. 15, 2019. Each of the above application(s) is hereby expressly incorporated by reference, in its entirety, into the present application. 
    
    
     BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a digital camera with a printer. 
     2. Description of the Related Art 
     In recent years, a digital camera with a printer capable of instantly printing a captured image has been widely used, and various methods of use have been suggested. For example, JP2002-112152A discloses performing printing using a wirelessly connected external printer in a case where printing cannot be performed using an incorporated printer in a digital camera with a printer. 
     SUMMARY OF THE INVENTION 
     In the technology disclosed in JP2002-112152A, an output destination is the external printer, and printing is performed in one way from the digital camera. In such a manner, the technology in the related art does not consider a relationship with another digital camera with a printer, and images cannot be captured and enjoyed by a plurality of users. 
     The present invention is conceived in view of such a matter, and an object thereof is to provide a digital camera with a printer enabling a composite image to be enjoyed by capturing images using a plurality of cameras. 
     In order to accomplish the above object, a digital camera with a printer according to a first aspect of the present invention is a digital camera with a printer and comprises a communication unit that communicates with a digital camera with a printer of another apparatus as a client, and an image composition unit that generates a composite image in which a first image captured by the digital camera with a printer of an owned apparatus as a host and a second image captured by the client are composited, in which the communication unit transmits the composite image to the client. 
     In the first aspect, the composite image in which the image captured by the owned apparatus as the host (side on which the composite image is generated) and the image captured by the other apparatus as the client (side on which the composite image is received) are composited is generated, and the generated composite image is transmitted to the client (the other apparatus). Thus, not only a user of the host (owned apparatus) but also a user of the client (the other apparatus) can obtain the composite image. Accordingly, the composite image can be enjoyed by capturing images using a plurality of cameras. In a case where a plurality of digital cameras according to the first aspect are present, each digital camera can be the host or the client. In addition, the number of digital cameras on the side (client) on which the composite image is received may be one or plural. 
     The digital camera with a printer according to a second aspect is the digital camera with a printer of the first aspect, in which the image composition unit generates, as the composite image, an image in which the first image and the second image are arranged in different regions of one image. The second aspect prescribes an aspect of the composite image. Shapes and sizes of regions in which the first image and the second image are arranged may be selectable by the user. 
     The digital camera with a printer according to a third aspect is the digital camera with a printer of the first aspect, in which the image composition unit generates, as the composite image, an image in which the first image and the second image are superimposed. The third aspect prescribes another aspect of the composite image. 
     The digital camera with a printer according to a fourth aspect is the digital camera with a printer of the third aspect, in which the image composition unit superimposes the first image and the second image based on feature points extracted from the first image and the second image. The fourth aspect prescribes an aspect of an image composition method using superimposition. 
     The digital camera with a printer according to a fifth aspect is the digital camera with a printer of any one of the first to fourth aspects, in which the image composition unit generates the composite image in a case where a difference between an imaging time point of the first image and an imaging time point of the second image is less than or equal to a threshold value. According to the fifth aspect, the composite image can be generated using images of which imaging timings are aligned. The threshold value for the imaging time points may be changeable by the user. 
     The digital camera with a printer according to a sixth aspect is the digital camera with a printer of any one of the first to fifth aspects, further comprising a display unit that displays the first image received from the host, in which the communication unit transmits the second image to the host. According to the sixth aspect, the user of the client can check the image (first image) captured by the host. 
     The digital camera with a printer according to a seventh aspect is the digital camera with a printer of any one of the first to sixth aspects, in which the communication unit transmits information for prompting capturing of the second image to the client. According to the seventh aspect, by transmitting the information for prompting capturing of the second image to the client from the host, the imaging timings can be easily aligned. The information for prompting capturing may be audio or a text. In addition, the information for prompting capturing may be information for causing a light emitting element to emit light. 
     The digital camera with a printer according to an eighth aspect is the digital camera with a printer of the seventh aspect, further comprising an information output unit that outputs the information for prompting capturing of the second image. According to the eighth aspect, the imaging timings can be easily aligned among a plurality of users. The information output unit can output information using audio, a text, light emission of a light emitting element, and the like. 
     The digital camera with a printer according to a ninth aspect is the digital camera with a printer of the eighth aspect, in which the communication unit transmits an image captured in accordance with the information received from the host to the host as the second image. According to the ninth aspect, the digital camera with a printer as the host (side on which the composite image is generated) can acquire an image necessary for generating the composite image from the client. 
     The digital camera with a printer according to a tenth aspect is the digital camera with a printer of any one of the first to ninth aspects, further comprising a print control unit that controls printing of the composite image, in which in a case where the composite image is received from the host, the print control unit causes a printer of the owned apparatus which is the client to print the composite image independently of an instruction operation of a user. According to the tenth aspect, the client can automatically print the composite image. 
     The digital camera with a printer according to an eleventh aspect is the digital camera with a printer of the tenth aspect, in which in a case where the host is a digital camera with a printer registered on an automatic print permission list, the print control unit causes the printer of the owned apparatus which is the client to print the composite image independently of the instruction operation of the user. According to the eleventh aspect, unintended automatic printing in the client can be prevented. 
     The digital camera with a printer according to a twelfth aspect is the digital camera with a printer of any one of the first to eleventh aspects, further comprising a storage control unit that controls storage of an image in a recording medium, in which the storage control unit does not store the composite image in a non-temporary recording medium. According to the twelfth aspect, since the composite image is not stored in the non-temporary recording medium (recording medium such as a memory card in which data is not deleted even in a case where power is oft), it is possible to prompt the user to perform printing. In addition, rarity of the printed composite image can be increased. In the tenth aspect, the image may be temporarily stored in a recording medium such as a random access memory (RAM) for displaying or printing the composite image. 
     The digital camera with a printer according to a thirteenth aspect is the digital camera with a printer of any one of the first to eleventh aspects, further comprising a storage control unit that controls storage of an image in a recording medium, in which the storage control unit stores the composite image in a non-temporary recording medium. According to the thirteenth aspect, the composite image can be stored. 
     The digital camera with a printer according to a fourteenth aspect is the digital camera with a printer of any one of the first to thirteenth aspects, in which the communication unit transmits information indicating a message to the client by associating the information with the composite image. The information indicating the message may be data of a text, audio, or the like or may be information such as a uniform resource locator (URL) indicating a location at which data of a text, audio, or the like is stored. 
     The digital camera with a printer according to a fifteenth aspect is the digital camera with a printer of any one of the first to fourteenth aspects, further comprising an output unit that outputs the message based on the information indicating the message. In a case where information such as audio or an image is directly associated with the composite image, the message can be output. In a case where information such as the URL indicating a location of audio, an image, or the like is associated, the message acquired by accessing a server or the like can be output. According to the fifteenth aspect, the user can enjoy a message of another user who creates the composite image. 
     The digital camera with a printer according to a sixteenth aspect is the digital camera with a printer of any one of the first to fifteenth aspects, further comprising a composite image display unit that displays the composite image. According to the sixteenth aspect, the composite image can be visually recognized. 
     The digital camera with a printer according to a seventeenth aspect is the digital camera with a printer of any one of the first to sixteenth aspects, in which the communication unit communicates with the digital camera with a printer which is the other apparatus using short range wireless communication. According to the seventeenth aspect, transmission and reception of images and generation and printing of the composite image can be directly enjoyed between nearby users. 
     The digital camera with a printer according to an eighteenth aspect is the digital camera with a printer of any one of the first to seventeenth aspects, in which the communication unit communicates with the digital camera with a printer which is the other apparatus through an information communication network. According to the eighteenth aspect, transmission and reception of images and generation and printing of the composite image can be enjoyed between users far from each other through the information communication network such as the Internet. 
     As described above, according to the digital camera with a printer according to an aspect of the present invention, the composite image can be enjoyed by capturing images using a plurality of cameras. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG.  1    is a perspective front view illustrating a digital camera with a printer. 
         FIG.  2    is a perspective rear view illustrating the digital camera with a printer. 
         FIG.  3    is a front view of an instant film. 
         FIG.  4    is a rear view of the instant film. 
         FIG.  5    is a diagram illustrating an electric configuration of the digital camera with a printer. 
         FIG.  6    is a function block diagram of a camera control unit. 
         FIG.  7    is a flowchart illustrating a procedure of processing related to image composition. 
         FIG.  8    is another flowchart illustrating the procedure of processing related to the image composition. 
         FIG.  9    is still another flowchart illustrating the procedure of processing related to the image composition. 
         FIG.  10    is a flowchart illustrating a modification example of the procedure of processing related to the image composition. 
         FIG.  11    is another flowchart illustrating the modification example of the procedure of processing related to the image composition. 
         FIGS.  12 A to  12 E  are diagrams illustrating patterns of the image composition. 
         FIGS.  13 A and  13 B  are diagrams illustrating examples of a first image. 
         FIG.  14    is a diagram illustrating an example of a second image. 
         FIG.  15    is a diagram illustrating an example of a composite image. 
         FIG.  16    is a diagram illustrating a state of attaching a message to an image. 
         FIGS.  17 A to  17 C  are diagrams illustrating examples of an image to which an audio message is attached. 
         FIG.  18    is a diagram illustrating an example of a composite image on which a two-dimensional barcode indicating an audio message is superimposed. 
         FIGS.  19 A to  19 C  are diagrams illustrating an example of image composition using superimposition. 
     
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     An embodiment of a digital camera with a printer according to the present invention will be described in detail below. In description, the appended drawings will be referred to. 
     &lt;Digital Camera with Printer&gt; 
     A digital camera with a printer  10  is a digital camera incorporating a printer and has a function of instantly printing a captured image. The digital camera with a printer  10  of the present embodiment performs printing on an instant film using an instant film pack. In addition, the digital camera with a printer  10  of the present embodiment has an audio recording function and can record audio in association with the captured image. 
     &lt;Exterior Configuration&gt; 
       FIG.  1    is a perspective front view illustrating an example of the digital camera with a printer.  FIG.  2    is a perspective rear view of the digital camera with a printer illustrated in  FIG.  1   . 
     As illustrated in  FIG.  1    and  FIG.  2   , the digital camera with a printer  10  includes a portable camera body  12 . The camera body  12  has a small thickness in a forward-rearward direction and has a longitudinal rectangular parallelepiped shape of which a dimension in a longitudinal direction is longer than a dimension in a lateral direction. 
     As illustrated in  FIG.  1   , an imaging lens  14 , a release button  16 , an audio recording button  18 , an electronic flash light emission window  20 , and the like are comprised on a front surface side of the camera body  12 . In addition, a power button  22   a , a menu button  22   b , an OK button  22   c , a mode switching button  22   d , a microphone hole  24 , a speaker hole  26 , and the like are comprised on a side surface on one side of the camera body  12 . The release button  16  is a button for issuing an instruction to record an image. The power button  22   a  is a button for powering the digital camera with a printer  10  ON and OFF. The menu button  22   b  is a button for calling a menu screen. The OK button is a button for issuing an OK instruction. The mode switching button  22   d  is a button for switching between an auto print mode and a manual print mode in an imaging mode. 
     As illustrated in  FIG.  2   , a touch panel display  28 , a film lid cover  30 , and various types of operation buttons are comprised on a rear surface side of the camera body  12 . The film lid cover  30  is a cover for opening and closing a film loading chamber. The types of operation buttons include a joystick  32   a , a print button  32   b , a play button  32   c , a cancel button  32   d , and the like. The print button  32   b  is a button for issuing an instruction to perform printing. The play button  32   c  is a button for issuing an instruction to switch to a playback mode. The cancel button  32   d  is a button for issuing an instruction to cancel an operation. 
     As illustrated in  FIG.  1    and  FIG.  2   , a film discharge port  34  is comprised on an upper surface of the camera body  12 . The instant film on which printing is performed is discharged from the film discharge port  34 . 
     &lt;Configuration of Printer Part of Digital Camera with Printer&gt; 
     The digital camera with a printer  10  comprises the film loading chamber (not illustrated), a film feeding mechanism  52 , a film transport mechanism  54 , a printhead  56 , and the like as constituents of a printer part that is a print unit (refer to  FIG.  5   ). An instant film pack having a structure in which a plurality of instant films is accommodated in a case is loaded into the film loading chamber.  FIG.  3    is a front view of an instant film  42 , and  FIG.  4    is a rear view of the instant film  42 . In  FIG.  3    and  FIG.  4   , a direction indicated by arrow F is a direction of use of the instant film  42 , and the instant film  42  is transported in the direction indicated by arrow F. Accordingly, in a case where the instant film  42  is loaded into the digital camera with a printer  10 , the direction indicated by arrow F is a discharge direction of the instant film  42 . 
     The instant film  42  is a self-developing instant film having a rectangular card shape. The instant film  42  is configured such that a rear surface side is an exposure surface  42   a , and that a front surface side is an observation surface  42   b . The exposure surface  42   a  is a surface on which an image is recorded by exposure. The observation surface  42   b  is a surface on which the recorded image is observed. 
     As illustrated in  FIG.  3   , an observation region  42   h  is comprised on the observation surface  42   b  of the instant film  42 . In addition, as illustrated in  FIG.  4   , an exposure region  42   c , a pod portion  42   d , and a trap portion  42   f  are comprised on the exposure surface  42   a  of the instant film  42 . The instant film  42  is subjected to development treatment by spreading a development treatment liquid of the pod portion  42   d  onto the exposure region  42   c  after exposure. The pod portion  42   d  incorporates a development treatment liquid pod  42   e  containing the development treatment liquid. The development treatment liquid of the pod portion  42   d  is squeezed from the pod portion  42   d  and spread onto the exposure region  42   c  by passing the instant film  42  through a roller pair. The development treatment liquid that is left in spreading processing is trapped by the trap portion  42   f . The trap portion  42   f  incorporates an absorbent material  42   g.    
     The instant film pack is loaded into the film loading chamber, not illustrated, that is disposed inside the camera body  12 . In a case of printing, the film is fed one sheet at a time by a claw (claw-shaped member), not illustrated, of the film feeding mechanism  52  and transported by a roller, not illustrated, of the film transport mechanism  54 . In addition, during transport, the development treatment liquid is subjected to the spreading processing by pressing the pod portion  42   d  of the instant film  42  by a spreading roller pair, not illustrated. The printhead  56  is configured with a line exposure head and records the image on the instant film  42  in a single pass by irradiating the exposure surface  42   a  of the instant film  42 , which is transported by the film transport mechanism  54 , with print light one line at a time. A frame  42   i  is comprised around the observation region  42   h , and the image is displayed inside the frame  42   i.    
     &lt;Electric Configuration of Digital Camera with Printer&gt; 
       FIG.  5    is a block diagram illustrating a main portion of an electric configuration of the digital camera with a printer. 
     As illustrated in the drawing, the digital camera with a printer  10  comprises the imaging lens  14 , a lens driving unit  62 , an image sensor  64 , an image sensor driving unit  66 , an analog signal processing unit  68 , a digital signal processing unit  70 , a memory  72 , a memory controller  74 , a display  28 , a display controller  76 , a communication unit  78 , and an antenna  80 . In addition, the digital camera with a printer  10  comprises a film feeding driving unit  82 , a film transport driving unit  84 , a head driving unit  86 , a strobe  88 , an electronic flash light emission control unit  90 , a microphone  92 , a speaker  94 , an audio signal processing unit  96 , a time tracking unit  97 , an operation unit  98 , and a camera control unit  100 . 
     The imaging lens  14  causes an optical image of a subject to be formed on a light-receiving surface of the image sensor  64 . The imaging lens  14  has a focal point adjustment function and comprises, not illustrated, a stop and a shutter. The lens driving unit  62  includes a motor driving the focal point adjustment function of the imaging lens  14  and a driving circuit thereof, a motor driving the stop and a driving circuit thereof, and a motor driving the shutter and a driving circuit thereof, and operates a focal point adjustment mechanism, the stop, and the shutter in accordance with an instruction from the camera control unit  100 . 
     The image sensor  64  is configured with a two-dimensional solid-state imaging element such as a charge coupled device (CCD) image sensor or a complementary metal oxide semiconductor (CMOS) image sensor. The image sensor  64  has an imaging region of an aspect ratio corresponding to a printable region of the used instant film. The image sensor driving unit  66  includes a driving circuit of the image sensor  64  and operates the image sensor  64  in accordance with an instruction from the camera control unit  100 . 
     In the digital camera with a printer  10  of the present embodiment, the imaging lens  14  and the image sensor  64  constitute an imaging unit. 
     The analog signal processing unit  68  fetches an analog image signal of each pixel output from the image sensor  64 , digitizes the analog image signal by performing signal processing (for example, correlative double sampling processing or amplification processing), and outputs the digitized image signal. 
     The digital signal processing unit  70  fetches the digital image signal output from the analog signal processing unit  68  and generates image data by performing signal processing (for example, gradation transformation processing, white balance correction processing, gamma-correction processing, demosaicing processing, or YC transformation processing). 
     The memory  72  is a non-temporary recording medium storing the image data obtained by imaging and audio data. For example, a memory card is used as the memory  72 . The memory  72  is an example of a storage unit. The memory controller  74  reads and writes data in the memory  72  under control of the camera control unit  100 . 
     The display  28  is configured with, for example, a liquid crystal display (LCD) or an organic electro-luminescence display (OELD). Besides, the display  28  may be configured with a plasma display, a field emission display (FED), an electronic paper, or the like. The display controller  76  displays a video on the display  28  under control of the camera control unit  100 . 
     The communication unit  78  wirelessly communicates with another digital camera with a printer  10  (another apparatus) through the antenna  80  under control of the camera control unit  100 . The communication unit  78  can directly communicate with the other apparatus in a short range using short range wireless communication such as a near field communication (NFC) standard or Bluetooth (registered trademark). In addition, the communication unit  78  can connect to an information communication network such as the Internet through a Wi-Fi spot (Wi-Fi: registered trademark) and communicate with the other digital camera with a printer  10  (the other apparatus) regardless of distance. 
     The film feeding driving unit  82  includes a motor driving the claw (claw-shaped member), not illustrated, of the film feeding mechanism  52  and a driving circuit thereof, and operates the claw by driving the motor under control of the camera control unit  100 . 
     The film transport driving unit  84  includes a motor driving a transport roller pair, not illustrated, of the film transport mechanism  54  and a driving circuit thereof and a motor driving the spreading roller pair, not illustrated, and a driving circuit thereof, and operates the transport roller pair and the spreading roller pair by driving the motor of the transport roller pair and the motor of the spreading roller pair under control of the camera control unit  100 . 
     The head driving unit  86  includes a driving circuit of the printhead  56  and drives the printhead  56  under control of the camera control unit  100 . 
     The strobe  88  comprises, for example, a xenon tube or a light emitting diode (LED) as a light source and irradiates the subject with electronic flash light by causing the light source to emit light. Irradiation with the electronic flash light is performed from the electronic flash light emission window  20  (refer to  FIG.  1   ) comprised on a front surface of the camera body  12 . The electronic flash light emission control unit  90  includes a driving circuit of the strobe  88  and causes the strobe  88  to emit light in accordance with an instruction from the camera control unit  100 . 
     The microphone  92  collects audio from an outside through the microphone hole  24  (refer to  FIG.  2   ) comprised in the camera body  12 . The microphone  92  is an example of an audio collection unit. The speaker  94  outputs audio to the outside from the speaker hole  26  comprised in the camera body  12 . The audio signal processing unit  96  digitizes an audio signal input from the microphone  92  by performing signal processing and outputs the digitized audio signal. In addition, the audio signal processing unit  96  performs signal processing on audio data provided from the camera control unit  100  and outputs the audio data from the speaker  94 . The time tracking unit  97  holds date and time information, and the camera control unit  100  sets an imaging time point (date and time) by referring to the information. 
     The operation unit  98  includes various operation members such as the release button  16 , the audio recording button  18 , the power button  22   a , the menu button  22   b , the OK button  22   c , the joystick  32   a , the print button  32   b , the play button  32   c , and the cancel button  32   d  and a signal processing circuit thereof, and outputs a signal based on an operation of each operation member to the camera control unit  100 . 
     The camera control unit  100  is a control unit that controls an operation of the entire digital camera with a printer  10 . The camera control unit  100  comprises a central processing unit (CPU), a read only memory (ROM), a random access memory (RAM), an electronically erasable and programmable read only memory (EEPROM), and the like. The camera control unit  100  is a computer configured with the CPU and the like and implements various functions described below by executing a control program. 
     &lt;Functional Configuration of Camera Control Unit&gt; 
       FIG.  6    is a diagram illustrating a functional configuration of the camera control unit  100 . The camera control unit  100  comprises a communication control unit  100 A (communication unit), an image composition unit  100 B (image composition unit), an output control unit  100 C (an information output unit, an output unit, and a composite image display unit), a print control unit  100 D (print control unit), a storage control unit  100 E (storage control unit), and a message processing unit  100 F (output unit). 
     A function of each unit of the camera control unit  100  described above can be implemented using various processors and a recording medium. For example, the various processors include a CPU that is a general-purpose processor implementing various functions by executing software (program). In addition, the various processors include a graphics processing unit (GPU) that is a processor specialized in image processing, and a programmable logic device (PLD) such as a field programmable gate array (FPGA). The programmable logic device is a processor of which a circuit configuration can be changed after manufacturing. In a case of learning or recognizing images, a configuration using the GPU is effective. Furthermore, the various processors include a dedicated electric circuit or the like that is a processor such as an application specific integrated circuit (ASIC) having a circuit configuration dedicatedly designed to execute a specific type of processing. 
     The function of each unit may be implemented by one processor or may be implemented by a plurality of processors of the same type or different types (for example, a plurality of FPGAs, a combination of a CPU and an FPGA, or a combination of a CPU and a GPU). In addition, one processor may have a plurality of functions. As an example of configuring the plurality of functions with one processor, first, as represented by a computer, a form of configuring one processor with a combination of one or more CPUs and software and causing the processor to implement the plurality of functions is present. Second, as represented by a system on chip (SoC) or the like, a form of using a processor that implements a function of the entire system using one integrated circuit (IC) chip is present. In such a manner, various functions are configured using one or more of the various processors as a hardware structure. Furthermore, a hardware structure of those various processors is more specifically an electric circuit (circuitry) in which circuit elements such as semiconductor elements are combined. The electric circuit may be an electric circuit that implements the functions using a logical sum, a logical product, a logical negation, an exclusive logical sum, and a logical operation of a combination thereof. 
     In a case where the processor or the electric circuit executes software (program), a code of the executed software readable by a computer (various processors or electric circuits constituting the camera control unit  100  and/or a combination thereof) is stored in a non-temporary recording medium such as a ROM, and the computer refers to the software. The software stored in the non-temporary recording medium includes a program for executing capturing and composition of images, and data used for execution. Instead of the ROM, the non-temporary recording medium in which the code is recorded may be various magneto-optical recording devices, a semiconductor memory, and the like. In a case of processing using the software, for example, a RAM is used as a temporary storage region. 
     &lt;Processing Related to Generation of Composite Image&gt; 
       FIG.  7    to  FIG.  11    are flowcharts illustrating processing related to generation and the like of a composite image by the digital camera with a printer  10  having the above configuration. In  FIG.  7    to  FIG.  11   , processing on a side (hereinafter, referred to as a “host”) requesting generation of the composite image is illustrated on a left side of the drawing, and processing on a side (hereinafter, referred to as a “client”) receiving the composite image is illustrated on a right side of the drawing. In  FIG.  7    to  FIG.  11   , two digital cameras with a printer  10  having the above configuration are used. One digital camera with a printer  10  is used as the “host” (first digital camera with a printer), and the other digital camera with a printer  10  (second digital camera with a printer) is used as the “client”. The digital cameras with a printer used as the host and the client do not necessarily have completely the same configuration. Digital cameras with a printer having different configurations may be used as the host and the client. 
     In the digital camera with a printer  10  on a host side, the image composition unit  100 B determines whether or not a request to generate the composite image is made (step S 100 ). Whether or not the request is made can be determined by presence or absence of an operation of a user performed on the operation unit  98 . In a case where the request to generate the composite image is made (YES in step S 100 ), the image composition unit  100 B selects a template of the composite image based on an instruction input of the user provided through the operation unit  98  (step S 110 ).  FIGS.  12 A to  12 E  are diagrams illustrating examples of the template. In the examples illustrated in  FIGS.  12 A to  12 E , a boundary between an image (first image) captured by the host and an image (second image) captured by the client is illustrated by a dotted line. As illustrated in the examples, in the template, one image may be divided into left and right parts, upper and lower parts, or in an oblique manner or may be divided into a center portion and a periphery of the image. In addition, the number of divisions is not limited to two and may be three or more. Furthermore, the template may be decorated with a text, a number, a symbol, and the like in addition to the image. The image composition unit  100 B generates, as the composite image, an image in which the first image and the second image are arranged in different regions of one image using the selected template. The image composition unit  100 B may determine whether or not the request to generate the composite image is made based on a request on a client side. In this case, the client side may transmit a signal for requesting image composition with the second image to the host side, and the host side may start generating the composite image in response to the signal for requesting the image composition transmitted from the client side. 
     In a case where the template is selected, the image composition unit  100 B issues an imaging instruction for the first image (step S 120 ). This imaging instruction can be issued by causing the image composition unit  100 B to output a message prompting imaging to the speaker  94  or displaying the message on the display  28 . The user can capture a desired image using the digital camera with a printer  10  that is an owned apparatus. In a case where an image is captured by the imaging lens  14 , the image sensor  64 , and the like (imaging unit), the image composition unit  100 B determines that the “first image is captured” (YES in step S 130 ). The camera control unit  100  decides an imaging date and time of the image (first image) by referring to the information in the time tracking unit  97 . 
     In a case where the first image is captured, the communication control unit  100 A (communication unit) transmits the first image to the other apparatus (client) through the communication unit  78  (communication unit) and the antenna  80  (communication unit) and issues an imaging instruction for the second image (step S 140 ). As illustrated in  FIG.  13 A , the image composition unit  100 B and the communication control unit  100 A can transmit the first image in a state where the first image is arranged in the template selected in step S 110 . At this point, the image composition unit  100 B may cut the first image in accordance with the selected template. In addition, the communication control unit  100 A (communication unit) can transmit the imaging instruction for the second image to the other apparatus through the communication unit  78  (communication unit) and the antenna  80  (communication unit). 
     The digital camera with a printer  10  that is the client receives the first image and the imaging instruction for the second image by the communication unit  78  (communication unit) and the antenna  80  (communication unit) (step S 300 ). The digital camera with a printer  10  (client) that receives the first image displays the received image (first image) on the display  28  (display unit) (step S 305 ). Accordingly, the user can perceive “which image is composited with the image captured by the user”. In addition, the output control unit  100 C (the information output unit and the display unit) of the client outputs the imaging instruction for the second image by display on the display  28  (the information output unit and the display unit) and/or audio output from the speaker  94  (information output unit) (step S 305 ). 
     In step S 140 , the host may not transmit the first image and transmit only the imaging instruction for the second image to the client. In this case, in the client, as illustrated in  FIG.  13 B , the output control unit  100 C can display a question mark (information indicating that the first image is not received) on a right side (region in which the first image is arranged) of the image and display the imaging instruction on a left side (region in which the second image is arranged) of the image on the display  28  (step S 305 ). 
     In the client, the image composition unit  100 B determines whether or not the second image is captured (step S 310 ). The user can capture a desired image using the digital camera with a printer  10  as the client. In a case where the image is captured by the imaging lens  14 , the image sensor  64 , and the like (imaging unit), a positive determination is made in step S 310 . In a case of imaging, the camera control unit  100  decides the imaging time point (date and time) of the image (second image) captured by the client by referring to the information in the time tracking unit  97  in the same manner as described above for the first image. The communication control unit  100 A (communication unit) on the client side transmits the second image to the host (the other apparatus) through the communication unit  78  (communication unit) and the antenna  80  (communication unit) (step S 320 ). The output control unit  100 C of the client may display the captured image (second image) on the display  28  before transmitting the captured image to the host. Here, it is assumed that the second image illustrated in  FIG.  14    is captured. 
     In the host, the communication control unit  100 A determines whether or not the second image is received from the client (step S 150 ). In a case where the second image is received (YES in step S 150 ), the image composition unit  100 B determines whether or not a difference between the imaging time point of the first image and the imaging time point of the second image is less than or equal to a threshold value (step S 160 ). In a case where the difference between the imaging time points is greater than the threshold value (NO in step S 160 ), the image composition unit  100 B of the host does not generate the composite image, and returns to step S 120  and issues the imaging instruction for the first image again. 
     In a case where the difference between the imaging time points is less than or equal to the threshold value (YES in step S 160 ), the image composition unit  100 B of the host generates the composite image by compositing the first image and the second image (step S 170 ). In the examples described using  FIG.  12 A  to  FIG.  14   , the image composition unit  100 B generates, as the composite image, an image in which the first image and the second image are arranged in different regions of one image in accordance with the selected template. At this point, the image composition unit  100 B may cut the first image and/or the second image in accordance with the selected template. In addition, the image composition unit  100 B displays the generated composite image on the display  28  (composite image display unit) (step S 180 ). Accordingly, the user of the host can check the composite image. Here, it is assumed that the composite image illustrated in  FIG.  15    is generated and displayed. In a case where the user of the host is not satisfied with the composite image (for example, in a case where the user issues an instruction to perform processing again through the operation unit  98 ), the host may return to step S 120  or step S 140  and perform processing again. 
     In the processing related to generation of the composite image, a plurality of clients may be present instead of one client. In a case where a plurality of clients are present, the image composition unit  100 B of the host may generate the composite image in which images of the host and all clients are arranged in one image, or may generate the composite image in which images of the host and a part (one or more) of the clients are arranged in one image. For example, the digital camera with a printer  10  used by an actor can be used as the host, and a plurality of digital cameras with a printer  10  each used by an individual member of a fan club can be used as the clients. In this case, for example, the image composition unit  100 B of the host can generate an image (different images for each client) in which an image captured by the actor and an image of the individual member are composited. 
     In the host, the message processing unit  100 F determines whether or not to attach a message to the composite image (step S 190 ). The message processing unit  100 F can perform this determination based on an operation of the user performed through the operation unit  98 . In a case of attaching the message to the composite image (YES in step S 190 ), for example, as in the example in  FIG.  16   , the message processing unit  100 F displays information  530  for prompting audio recording of the message on the display  28  and generates, as “information indicating the message”, audio that is input through the microphone  92  and the audio signal processing unit  96  in response to the display (step S 200 ). The message processing unit  100 F may output the information for prompting audio recording of the message from the speaker  94  or may perform audio recording in accordance with an operation performed on the audio recording button  18 . A handwritten text, a symbol, or the like input through a touch panel of the display  28  may be generated as the “information indicating the message” and be attached to or superimposed on the image. 
     In the host, the image composition unit  100 B and the communication control unit  100 A (communication unit) transmits the composite image generated in such a manner (in a case where the message is generated, the information indicating the message is associated with the composite image) to the client through the communication unit  78  (communication unit) and the antenna  80  (communication unit) (step S 210 ). In the client, the communication control unit  100 A (communication unit) receives the composite image (and the message) through the communication unit  78  (communication unit) and the antenna  80  (communication unit) (step S 330 ) and displays the composite image on the display  28  (step S 340 ).  FIG.  17 A  is a diagram illustrating an example of the composite image to which an audio message is attached. A mark  600  of a speaker in the composite image indicates that the audio message is attached to the image. 
     In a case where the message is attached (YES in step S 350 ), the message processing unit  100 F of the client outputs information indicating that the message is attached, using the display  28  and/or the speaker  94 . In a case where the user of the client issues an instruction to output the message by performing an operation through the operation unit  98  or the microphone  92 , the message processing unit  100 F (output unit) outputs audio of the message by playing the audio through the audio signal processing unit  96  (output unit) and the speaker  94  (output unit) (step S 360 ). In a case where the handwritten text, the symbol, or the like is attached as the message, the message processing unit  100 F (output unit) may display the message on the display  28  by superimposing the message on the composite image. In addition, the print control unit  100 D may print the message such as the text or the symbol by superimposing the message on the composite image. 
     While a case where the host attaches the message to the composite image is described in the above aspect, the message may be generated and attached in a case where the host transmits the first image to the client, and/or in a case where the client transmits the second image to the host.  FIG.  17 B  is an example of attaching the message in a case of transmitting the first image.  FIG.  17 C  illustrates an example of generating the composite image in a state where the message is attached to both of the first image and the second image. 
     In the client that receives the composite image from the host, the print control unit  100 D (print control unit) determines whether or not the host is the digital camera with a printer  10  registered on an “automatic print permission list” (step S 370 ). In a case where the host is registered on the list, the print control unit  100 D causes the printer (configured with the printhead  56 , the film feeding mechanism  52 , the film transport mechanism  54 , and the driving units thereof; refer to  FIG.  5   ) of the owned apparatus to print the composite image independently of an instruction operation of the user (step S 380 ). In addition, even in a case where the composite image is received from the host not registered on the “automatic print permission list”, the print control unit  100 D may determine whether or not to perform printing in accordance with an operation of the user (step S 390 ) and perform printing in a case where a positive determination is made. For example, the print control unit  100 D can create the “automatic print permission list” based on individual identification information of the digital camera with a printer  10  or an operation of the user performed through the operation unit  98  and store the automatic print permission list in the EEPROM (refer to  FIG.  5   ) of the camera control unit  100 , and can refer to the automatic print permission list in a case of determination in step S 370 . 
     In a case where the composite image is printed, the user cannot refer to the audio message associated with the composite image from a printout. In this case, in a case of printing the composite image to which the audio message is attached, the message processing unit  100 F and the communication control unit  100 A can upload the audio message to a storage device (server or the like) on a network through the communication unit  78  and the antenna  80  and acquire information (a two-dimensional barcode, a URL, or the like) indicating an upload destination. The print control unit  100 D can print the information by superimposing the information on the composite image.  FIG.  18    is an example illustrating a state where a two-dimensional barcode  610  indicating the upload destination of the message is displayed by superimposing the two-dimensional barcode  610  on the composite image. The user can read out the two-dimensional barcode using a smartphone or other apparatuses and an application and check the audio message by accessing the server or the like. 
     After the composite image is printed (step S 380 ), the storage control unit  100 E (storage control unit) of the client finishes processing without storing the composite image in the memory  72  (non-temporary recording medium). Accordingly, a rarity value of the printout can be increased, and printing can be promoted. 
     Meanwhile, in the host, after the composite image (and the message) is transmitted to the client (step S 210 ), the storage control unit  100 E (storage control unit) determines whether or not to store the composite image in the memory  72  (step S 220 ). The storage control unit  100 E can perform this determination based on an operation of the user performed through the operation unit  98  or the like. In a case where a positive determination is made (YES in step S 220 ), the storage control unit  100 E stores the composite image in the memory  72  (step S 230 ) and finishes processing. The host may transmit the composite image again in a case where a request is made from the client. 
     As described above, according to the digital camera with a printer  10  of the present embodiment, the user can enjoy the composite image by capturing images using a plurality of cameras. 
     &lt;Modification Example Related to Printing and Storage of Composite Image&gt; 
     An aspect in which the host does not print and stores the composite image, and in which the client prints and does not store the composite image is described with respect to the flowcharts of  FIG.  7    to  FIG.  9   . However, an aspect related to printing and storage of the composite image may be different from the above aspect. For example, as illustrated in  FIG.  10   , in the host, the print control unit  100 D (print control unit) may determine whether or not to print the composite image (step S 212 ) and perform printing in a case where a positive determination is made (step S 214 ). In this case, in the host, for example, the print control unit  100 D can determine whether or not to print the composite image based on an operation of the user performed through the operation unit  98 . In  FIG.  10   , steps (steps S 212  and S 214 ) surrounded by a dash-dotted line are added with respect to the flowchart of  FIG.  9   . 
     Meanwhile, the client may store the composite image. In this case, for example, as illustrated in  FIG.  11   , the storage control unit  100 E (storage control unit) can determine whether or not to store the composite image in the memory  72  (non-temporary recording medium) (step S 392 ). In a case where a positive determination is made in step S 392 , the storage control unit  100 E stores the composite image in the memory  72  (step S 394 ). In a case where the message is attached to the composite image, it is preferable that the storage control unit  100 E stores the composite image in association with the message. In  FIG.  11   , steps (steps S 392  and S 394 ) surrounded by a dash-dotted line are added with respect to the flowchart of  FIG.  9   . In addition, in  FIG.  11   , processing on the host side is not illustrated. 
     &lt;Generation of Composite Image Using Superimposition&gt; 
     An aspect in which the image composition unit generates, as the composite image, an image in which the first image and the second image are arranged in different regions of one image is described with respect to  FIG.  12 A  to  FIG.  17 C . However, in the digital camera with a printer  10  according to the embodiment of the present invention, the image composition unit  100 B may generate, as the composite image, an image in which the first image and the second image are superimposed.  FIGS.  19 A to  19 C  are diagrams for describing such generation of the composite image using superimposition. In the example illustrated in  FIG.  19 A , in a case where an image  501  (first image) is captured by the host, and where an image  502  (second image) is captured by the client, the image composition unit  100 B of the host extracts a feature point  1000  from the image  501  as a corner portion of a subject  900  (house) and extracts a feature point  1010  from the image  502  as a corner portion or an intersection of a ridgeline of a subject  910  (mountain). The image composition unit  100 B can generate the composite image by superimposing the image  501  and the image  502  such that the feature points  1000  and  1010  (feature points) extracted from the image  501  (first image) and the image  502  (second image) match. The image composition unit  100 B can extract the feature points from the image  501  and the image  502  using a well-known method. In addition, in a case of superimposition, the image composition unit  100 B may perform image processing such as movement, rotation, and deformation on the image  501  and/or the image  502 . 
       FIG.  19 B  illustrates an example of the composite image using superimposition. In this example, a composite image  510  of a panoramic image type is obtained, and an upper right region  511  and a lower left region  512  are blank (region in which image data is not present) due to deviation of the original images  501  and  502 . In the drawing, a dotted line is a reference line indicating ranges of the original images  501  and  502 . 
       FIG.  19 C  illustrates another example of the composite image using superimposition. Even in this example, a composite image  520  of a panoramic image type is obtained. However, in the composite image  520 , the image composition unit  100 B trims an image region into a rectangular shape. In the drawing, a dotted line is a reference line indicating ranges of the original images  501  and  502 . In a case of generating the composite image using superimposition, the image composition unit  100 B may generate an image such as the composite image  510  or generate an image such as the composite image  520 . 
     By image composition illustrated in  FIGS.  19 A to  19 C , the user of the digital camera with a printer  10  can enjoy the composite image by capturing images using a plurality of cameras. 
     &lt;Modification Example of Printing Using Automatic Print Permission List&gt; 
     An aspect in which the client automatically performs printing in a case where the client receives the composite image from the digital camera with a printer  10  registered on the “automatic print permission list” of the client is described using  FIG.  9   . However, automatically performing printing by the client is not limited to a case where the composite image is received. For example, in a case where the image captured by the client is transmitted to the host from the client, subjected to the image processing such as movement, rotation, and deformation on the host side, and then, transmitted back to the client from the host, the client may automatically print the image transmitted back from the host based on the “automatic print permission list”. In addition, for example, in a case where the image captured by the client is transmitted to the host from the client, the message is attached to the image by the message processing unit  100 F of the host, and the image is transmitted back to the client from the host, the client may automatically print the image transmitted back from the host. 
     While the embodiment of the present invention is described above, the present invention is not limited to the above aspect and can be subjected to various modifications without departing from a spirit of the present invention. 
     EXPLANATION OF REFERENCES 
       10 : digital camera with printer 
       12 : camera body 
       14 : imaging lens 
       16 : release button 
       18 : audio recording button 
       20 : electronic flash light emission window 
       22   a : power button 
       22   b : menu button 
       22   c : OK button 
       22   d : mode switching button 
       24 : microphone hole 
       26 : speaker hole 
       28 : display 
       30 : film lid cover 
       32   a : joystick 
       32   b : print button 
       32   c : play button 
       32   d : cancel button 
       34 : film discharge port 
       42 : instant film 
       42   a : exposure surface 
       42   b : observation surface 
       42   c : exposure region 
       42   d : pod portion 
       42   e : development treatment liquid pod 
       42   f : trap portion 
       42   g : absorbent material 
       42   h : observation region 
       42   i : frame 
       52 : film feeding mechanism 
       54 : film transport mechanism 
       56 : printhead 
       62 : lens driving unit 
       64 : image sensor 
       66 : image sensor driving unit 
       68 : analog signal processing unit 
       70 : digital signal processing unit 
       72 : memory 
       74 : memory controller 
       76 : display controller 
       78 : communication unit 
       80 : antenna 
       82 : film feeding driving unit 
       84 : film transport driving unit 
       86 : head driving unit 
       88 : strobe 
       90 : electronic flash light emission control unit 
       92 : microphone 
       94 : speaker 
       96 : audio signal processing unit 
       97 : time tracking unit 
       98 : operation unit 
       100 : camera control unit 
       100 A: communication control unit 
       100 B: image composition unit 
       100 C: output control unit 
       100 D: print control unit 
       100 E: storage control unit 
       100 F: message processing unit 
       501 : image 
       502 : image 
       510 : composite image 
       511 : region 
       512 : region 
       520 : composite image 
       530 : information 
       600 : mark 
       610 : two-dimensional barcode 
       900 : subject 
       910 : subject 
       1000 : feature point 
       1010 : feature point 
     F: arrow 
     S 100  to S 394 : each step of processing in digital camera with printer