JP2008092292A - Still image transmitter, still image receiver, still image transmitter/receiver, still image transmission method, still image reception method, still image transmission/reception method, camera device and portable terminal device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To handle JPEG data whose file size is to be of variable length as well together with YUV data in a system based on a YUV format for handling still image data whose file size is a fixed length. <P>SOLUTION: On the transmission side, by inserting invalid data stipulated by a JPEG format to the JPEG data, the file size of the JPEG data is turned to the file size of the fixed length, corresponding to the YUV format and is transmitted. On the reception side, only the JPEG data are extracted, by eliminating the invalid data from the JPEG data received together with the invalid data. Thus, the JPEG data whose file size is of variable length are handled in the system, based on the YUV format for handling the file size of the fixed length. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention is suitable for application to, for example, a mobile phone, a PHS phone (PHS: Personal Handyphone System), a PDA device (PDA: Personal Digital Assistant), a portable game machine, or a notebook personal computer device having a camera function. Still image transmission device, still image reception device, still image transmission / reception device, still image transmission method, still image reception method, still image transmission / reception method, camera device, and portable terminal device, in particular, fixed file size such as YUV data Still image transmission apparatus, still image reception apparatus, still image transmission / reception apparatus, still image transmission method, still image reception method, which can handle variable file size still image data such as JPEG data in a system that handles still image data of The present invention relates to a still image transmission / reception method, a camera device, and a mobile terminal device.

  Japanese Laid-Open Patent Publication No. 2000-197090 (Patent Document 1) discloses a digital video playback apparatus that aims to provide a digital video playback apparatus that is multifunctional and capable of handling multimedia.

  In this digital video reproduction apparatus, MPEG2 compressed video / audio data read from a DVD by a reading unit is separated into a compressed video data packet and a compressed audio data packet by a separation unit. The decompressing unit decodes each of the compressed video data packet and the compressed audio data packet to decompress the original video / audio signal. The video output unit displays the video data expanded by the expansion unit on the monitor screen, and the audio output unit outputs the audio corresponding to the audio data packet expanded by the expansion unit via the speaker.

  On the other hand, when the switch key of the remote controller is operated, the control unit can enter JPEG compressed color still image data from the digital camera via the interface unit into the decompression unit. The decompression unit decompresses the input compressed color still image data and converts it into original color still image data, and displays a color still image corresponding to the color still image data on the monitor screen.

  Accordingly, both the compressed video / audio data of the MPEG2 standard and the compressed color still image data of the JPEG standard can be reproduced, and a digital video reproducing apparatus capable of supporting a multi-function and multimedia can be provided.

  Here, the camera module provided in the cellular phone or the like is usually YUV data (Y = luminance signal) in accordance with the transmission standard of REC656, which is a digital video signal transmission standard recommended by the World Wide Web Consortium (W3C). , U = difference between luminance signal and blue component, and V = difference between luminance signal and red component). For this reason, the camera module is attached to the mobile phone side via an interface unit corresponding to the YUV format. On the mobile phone side, the JPEG encoding process (JPEG: Joint Photographic Experts Group) is applied to the YUV data captured from the camera module via the interface unit corresponding to the YUV format, and the JPEG encoding process is performed. JPEG data is stored in the memory.

Japanese Patent Laid-Open No. 2000-197090 (page 5: FIG. 1)

  However, YUV data has a fixed file size, whereas JPEG data has a different file size depending on a still image subjected to JPEG encoding processing. For this reason, when an interface unit corresponding to the YUV format is provided as an interface unit for receiving still image data from the camera module, it becomes difficult to handle JPEG data, and conversely, an interface unit for receiving still image data from the camera module. When an interface unit corresponding to the JPEG format is provided, there is a problem that it is difficult to handle YUV data.

  The digital video reproduction apparatus disclosed in the above-mentioned Patent Document 1 has the same problem, and in order to import JPEG compressed color still image data from the digital camera into the decompression unit, the digital camera It is necessary to provide an interface unit dedicated to JPEG transfer as the interface unit between the image and the decompression unit. As a result, it is possible to handle JPEG data, but there is a problem that it is difficult to handle YUV data of different formats.

  The present invention has been made in view of the above-described problems, and in a system that handles still image data having a fixed file size, a still image transmitting apparatus and a still image receiving device that can handle still image data in a format in which the file size changes. An object is to provide a device, a still image transmission / reception device, a still image transmission method, a still image reception method, a still image transmission / reception method, a camera device, and a portable terminal device.

The still image transmitting apparatus according to the present invention is a means for solving the above-described problems.
First still image forming means for forming first format still image data having a fixed file size corresponding to the first format;
Based on the first format still image data formed by the first still image forming means, second format still image data having a variable file size corresponding to a second format different from the first format is formed. Second still image forming means;
Invalid data forming means for forming invalid data defined in the second format;
By operating at a timing corresponding to the first format, the first format still image data from the first still image forming unit and the second format still image data from the second still image forming unit are processed. In addition to selectively switching and outputting the second format still image data, the variable file size can be obtained by inserting invalid data from the invalid data forming means into the second format still image data. The second format still image data has the same fixed file size as that of the first format still image data, and output switching means for outputting at a timing corresponding to the first format.

Further, the still image receiving apparatus according to the present invention is a means for solving the above-described problems.
By operating at the timing corresponding to the first format, the first format still image data having a fixed file size corresponding to the first format, or the variable corresponding to the second format different from the first format. The second format having the same fixed file size as the first format still image data by inserting invalid data defined in the second format to the second format still image data of the file size Receiving means for receiving still image data;
When the second format still image data is received by the receiving means, the invalid data inserted in the received second format still image data is removed to remove the invalid data before the invalid data is inserted. Invalid data removing means for extracting second format still image data of variable file size.

Moreover, the still image transmission / reception apparatus according to the present invention is a means for solving the above-described problems.
First still image forming means for forming first format still image data having a fixed file size corresponding to the first format;
Based on the first format still image data formed by the first still image forming means, second format still image data having a variable file size corresponding to a second format different from the first format is formed. Second still image forming means;
Invalid data forming means for forming invalid data defined in the second format;
By operating at a timing corresponding to the first format, the first format still image data from the first still image forming unit and the second format still image data from the second still image forming unit are processed. In addition to selectively switching and outputting the second format still image data, the variable file size can be obtained by inserting invalid data from the invalid data forming means into the second format still image data. A still image transmitting apparatus comprising: output switching means for outputting the second format still image data having the same fixed file size as that of the first format still image data and outputting the same at a timing corresponding to the first format; ,
Receiving means for receiving the first format still image data from the transmission device and the second format still image data in which the invalid data is inserted by operating at a timing corresponding to the first format;
When the second format still image data is received by the receiving means, the invalid data inserted in the received second format still image data is removed to remove the invalid data before the invalid data is inserted. A still image receiving device comprising: invalid data removing means for extracting second format still image data having a variable file size.

Moreover, the still image transmission method according to the present invention is a means for solving the above-described problems.
A first still image forming unit forming first format still image data having a fixed file size corresponding to the first format;
Based on the first format still image data formed in the above step, the second still image forming means has a variable file size corresponding to a second format different from the first format. Forming a step;
Invalid data forming means for forming invalid data defined in the second format;
The output switching means operates at a timing corresponding to the first format, whereby the first format still image data from the first still image forming means and the second from the second still image forming means. The format still image data is selectively switched and output, and when the second format still image data is output, invalid data from the invalid data forming means is inserted into the second format still image data. Then, the second format still image data having a variable file size is set to the same fixed file size as the first format still image data, and is output at a timing corresponding to the first format.

Further, the still image receiving method according to the present invention is a means for solving the above-described problems.
When the receiving means operates at a timing corresponding to the first format, the first format still image data having a fixed file size corresponding to the first format, or a second format different from the first format The invalid file data defined in the second format is inserted into the second format still image data having a variable file size corresponding to the above, so that the fixed file size is the same as that of the first format still image data. Receiving the second format still image data;
When the second format still image data is received in the step, the invalid data removal means removes the invalid data inserted in the received second format still image data, thereby inserting the invalid data. Extracting the second-format still image data of the variable file size before being processed.

Moreover, the still image transmission / reception method according to the present invention is a means for solving the above-described problems.
A first still image forming unit forming first format still image data having a fixed file size corresponding to the first format;
Based on the first format still image data formed in the above step, the second still image forming means has a variable file size corresponding to a second format different from the first format. Forming a step;
Invalid data forming means for forming invalid data defined in the second format;
The output switching means operates at a timing corresponding to the first format, whereby the first format still image data from the first still image forming means and the second from the second still image forming means. The format still image data is selectively switched and output, and when the second format still image data is output, invalid data from the invalid data forming means is inserted into the second format still image data. A variable file size second format still image data having the same fixed file size as the first format still image data, and outputting at a timing corresponding to the first format. Sending step;
The first format still image data transmitted in the still image transmission step or the second format still image data in which the invalid data is inserted by the reception means operating at a timing corresponding to the first format. Receiving the step,
When the second format still image data is received in the step, the invalid data removing means removes the invalid data inserted in the received second format still image data, thereby inserting the invalid data. A still image receiving step comprising: extracting the second format still image data of the variable file size before being processed.

In addition, the camera device according to the present invention is a means for solving the above-described problems.
An image sensor that forms an imaging signal that is an electrical signal corresponding to the received imaging light;
First still image forming means for forming first format still image data having a fixed file size corresponding to the first format based on an imaging signal from the image sensor;
Based on the first format still image data formed by the first still image forming means, second format still image data having a variable file size corresponding to a second format different from the first format is formed. Second still image forming means;
Invalid data forming means for forming invalid data defined in the second format;
By operating at a timing corresponding to the first format, the first format still image data from the first still image forming unit and the second format still image data from the second still image forming unit are processed. In addition to selectively switching and outputting the second format still image data, the variable file size can be obtained by inserting invalid data from the invalid data forming means into the second format still image data. The second format still image data has the same fixed file size as that of the first format still image data, and output switching means for outputting at a timing corresponding to the first format.

In addition to the above-described means, the camera device according to the present invention is a means for solving the above-described problems.
Receiving means for receiving the first format still image data from the output switching means or the second format still image data in which the invalid data is inserted by operating at a timing corresponding to the first format; ,
When the second format still image data is received by the receiving means, the invalid data inserted in the received second format still image data is removed to remove the invalid data before the invalid data is inserted. Invalid data removing means for extracting second format still image data of variable file size.

Moreover, the portable terminal device according to the present invention is a means for solving the above-described problems.
An image sensor that forms an imaging signal that is an electrical signal corresponding to the received imaging light;
First still image forming means for forming first format still image data having a fixed file size corresponding to the first format based on an imaging signal from the image sensor;
Based on the first format still image data formed by the first still image forming means, second format still image data having a variable file size corresponding to a second format different from the first format is formed. Second still image forming means;
Invalid data forming means for forming invalid data defined in the second format;
By operating at a timing corresponding to the first format, the first format still image data from the first still image forming unit and the second format still image data from the second still image forming unit are processed. In addition to selectively switching and outputting the second format still image data, the variable file size can be obtained by inserting invalid data from the invalid data forming means into the second format still image data. The second format still image data having the same fixed file size as the first format still image data, and an output switching means for outputting at a timing corresponding to the first format,
By operating at the timing corresponding to the first format, the first format still image data from the output switching means of the camera unit or the second format still image data in which the invalid data is inserted is received. Receiving means;
When the second format still image data is received by the receiving means, the invalid data inserted in the received second format still image data is removed to remove the invalid data before the invalid data is inserted. A camera interface comprising: invalid data removing means for extracting second format still image data of variable file size;
Storage control means for storing in the memory the second format still image data from which at least the invalid data from the camera interface has been removed.

  In the present invention, when outputting the second format still image data having a variable file size, the second format still image data is invalidated in the second format. By inserting data and outputting the file size of the second format still image data as the same fixed file size as the first format still image data, the first and second formats having different formats respectively. Still image data can be handled at a fixed timing defined in the first format.

  When outputting the second format still image data with variable file size, the present invention inserts invalid data defined in the second format into the second format still image data. Thus, the file size of the second format still image data can be output as the same fixed file size as that of the first format still image data. Therefore, the first and second format still image data having different formats can be handled at a fixed timing defined by the first format.

  The present invention can be applied to a camera unit of a mobile phone as an example.

[First Embodiment]
[Configuration of mobile phone]
As shown in FIG. 1, the mobile phone according to the embodiment of the present invention has an antenna 1 and a communication circuit 2 that perform wireless communication with a base station, and an acoustic output such as a ringtone and a received voice. A speaker unit 3, a microphone unit 4 that collects a transmitted voice and the like, and a display unit 5 for displaying images (moving images, still images, etc.), characters, etc.

  In addition, the mobile phone includes an operation unit 6 for performing input operation of characters and the like, selection operation of a desired menu, and the like, a light emitting unit 7 (LED: Light Emitting Diode) for notifying light of incoming / outgoing calls, and the like, It has a camera unit 8 for capturing a still image or a moving image of a desired subject, and a vibration unit 9 for notifying the user of incoming / outgoing calls by vibrating the casing of the mobile phone.

  In addition to the timer 10 that counts the current time and a communication processing program (communication program) for performing wireless communication processing via the base station, this mobile phone is handled by various application programs and these application programs. It has a memory 11 that stores various data (contents) and the like, and a control unit 12 that controls the entire mobile phone.

  In the memory 11, an e-mail management program for controlling creation and transmission / reception of e-mail, imaging control and data processing control of the camera unit 8, and moving images and still images captured by the camera unit 8 are displayed on the display unit. 5, a camera control program for controlling display, a schedule book management program for managing a schedule book in which a user's schedule is registered, a phone book management program for managing a phone book, and music content A music player program for reproduction is stored.

Also, in the memory 11, a schedule book in which a user's desired schedule is registered, a still image (mainly a face image) of a user's acquaintance or friend, a telephone number, an e-mail address, a date of birth, and the like are registered. Phone book, music content played back based on the music player program, still image content and moving image content played back based on the viewer function of the camera control program, sent and received e-mail content, phone and An e-mail outgoing / incoming history is stored.

[Configuration of camera section]
As shown in FIG. 2, the camera unit 8 receives an imaging lens 21 that captures imaging light of a subject, and imaging light captured via the imaging lens 21, and recommends (Recommendations) according to W3C (World Wide Web Consortium). = REC) YUV data (Y = luminance signal, U = difference between luminance signal and blue component, V = luminance signal and red component) compliant with REC656 transmission standard (YUV format), which is a transmission standard for digital video signals being The image sensor 22 and the YUV data forming unit 23 are formed.

  The camera unit 8 also includes a JPEG encoding processing unit 24 that forms a still image content in a so-called JPEG format (JPEG: Joint Photographic Experts Group) based on YUV data from the YUV data forming unit 23, and invalid data described later. , An invalid data forming unit 25 that outputs a vertical synchronization signal input terminal 27 to which a fixed-length vertical synchronization signal (VSYNC) corresponding to the YUV format is supplied, and a fixed-length horizontal synchronization signal (HSYNC) corresponding to the YUV format. Are provided, and a data selection control signal input terminal 29 to which a data selection control signal for selectively outputting YUV data or JPEG data is supplied.

  Further, the camera unit 8 switches the YUV data from the YUV data forming unit 23 or the JPEG data from the JPEG encoding processing unit 24 based on the data selection control signal and outputs it through the output terminal 30, and When outputting JPEG data, by inserting invalid data from the invalid data forming unit 25 into the JPEG data, the data length and output timing of the JPEG data are simulated as the data length and output timing corresponding to the YUV format. An output switching unit 26 for outputting is provided.

  Such a camera unit 8 is electrically and mechanically connected to the camera interface unit 13 (camera IF) shown in FIG. The camera IF 13 captures data based on the YUV format recommended by REC656. That is, the camera unit 8 functions as a transmission device that transmits (outputs) still image data, and the camera IF 13 functions as a reception device that receives still image data transmitted from the camera unit 8.

  In the mobile phone of this embodiment, as described above, the camera unit 8 appropriately inserts invalid data into JPEG data, so that the data length and output timing of the JPEG data correspond to the data length and output corresponding to the YUV format. Since it is output as a timing, the camera IF 13 can capture YUV data and JPEG data whose data length and output timing correspond to the YUV format in a pseudo manner by operating based on the YUV format. It has become.

In other words, an interface that operates based on the YUV format is often provided as an interface of the camera unit. However, when the mobile phone according to the embodiment outputs JPEG data, the JPEG data Since the data length and the output timing are output as the data length and the output timing corresponding to the YUV format in a pseudo manner, the interface operating based on the YUV format is not changed to the interface for the JPEG format (= based on the YUV format). The YUV data and both can be captured using the interface operating as is.

[Operation of First Embodiment]
In the mobile phone according to the first embodiment, YUV data or JPEG data output from the camera unit 8 can be selected according to the setting of the manufacturer that manufactures the mobile phone or the setting of the user. The setting information indicating the manufacturer's setting or the user's setting is stored in the memory 11 shown in FIG. 1, and the control unit 12 displays the data selection control signal corresponding to this setting information in FIG. Is supplied to the output switching unit 26 via the data selection control signal input terminal 29, and the output of the YUV data or the output of JPEG data is controlled to be switched.

[Output operation of YUV data]
First, when the output setting of YUV data is made by the above setting, the control unit 12 sends a data selection control signal for selecting the output of YUV data via the data selection control signal input terminal 29 shown in FIG. This is supplied to the output switching unit 26.

  On the other hand, the imaging light of the subject captured through the imaging lens 21 is received by the image sensor 22, converted into an imaging signal that is an electrical signal, and supplied to the YUV data forming unit 23. The YUV data forming unit 23 forms YUV data corresponding to the YUV format from this imaging signal, and supplies this to the output switching unit 26 and the JPEG encoding processing unit 24.

  Note that the control unit 12 controls to stop power supply to the JPEG encoding processing unit 24 and the invalid data forming unit 25 when the output of YUV data is selected. Thereby, when outputting the YUV data, the operations of the JPEG encoding processing unit 24 and the invalid data forming unit 25 can be stopped, so that wasteful power consumption can be reduced.

  Next, the output switching unit 26 supplies the YUV data supplied from the YUV data forming unit 23 from the vertical synchronization signal (VSYNC) supplied from the vertical synchronization signal input terminal 27 and the horizontal synchronization signal input terminal 28. Each is synchronized with a horizontal synchronizing signal (HSYNC) and supplied to the camera IF 13 shown in FIG.

As described above, the camera IF 13 operates based on the YUV format, and takes in the YUV data supplied from the camera unit 8 based on the YUV format. Thereby, it is possible to capture still image data in YUV format.

[JPEG data output operation]
Next, when the output setting of JPEG data is made by the above setting, the control unit 12 sends a data selection control signal for selecting the output of JPEG data via the data selection control signal input terminal 29 shown in FIG. To the output switching unit 26.

  Further, when the output setting of JPEG data is made by the above setting, the control unit 12 supplies power to the JPEG encoding processing unit 24 and the invalid data forming unit 25, and the JPEG encoding processing unit 24 and the invalid data forming unit. The unit 25 is set in the operating state.

  Although it is an example, the JPEG encoding processing unit 24 is hardware, and by applying JPEG encoding processing to the YUV data supplied from the YUV data forming unit 23, the YUV data is converted into JPEG data, This is supplied to the output switching unit 26.

  Here, the JPEG data has a 2-byte marker (segment identifier) of “0xFF 0xXX”, and as shown in FIG. 3, various information is classified by “0xXX” following “0xFF”. It has become. In the JPEG format, “0x02 to 0xBF” is defined as a “reservation code” and “0xFF” is defined as a “prohibition code”, as indicated by the bold frame in FIG. . The “reservation code” and “prohibition code” are markers that do not exist in the JPEG data. The invalid data forming unit 25 forms a “reservation code” and / or a “prohibition code” that is a marker that does not exist in the JPEG data, and supplies this to the output switching unit 26 as “invalid data”.

  The output switching unit 26 is a vertical synchronization signal (VSYNC) supplied from the vertical synchronization signal input terminal 27 at the timing of the YUV format, and a horizontal synchronization signal (HSYNC) supplied from the horizontal synchronization signal input terminal 28 at the timing of the YUV format. The JPEG data and the invalid data are switched and output so that invalid data from the invalid data forming unit 25 is appropriately inserted into the JPEG data supplied from the JPEG encoding processing unit 24. The data length and output timing of the JPEG data are output as the data length and output timing corresponding to the YUV format.

  4A to 4D show time charts of each data and each synchronization signal. 4A shows the JPEG data supplied to the output switching unit 26, FIG. 4B shows the vertical synchronization signal (VSYNC) supplied to the output switching unit 26 at the timing of the YUV format, and FIG. 4C. FIG. 4D shows the horizontal synchronization signal (HSYNC) supplied to the output switching unit 26 at the timing of the YUV format, and FIG. 4D shows the JPEG data output from the output switching unit 26 and having the invalid data inserted therein. Yes.

  As can be seen from FIGS. 4A to 4D, the output switching unit 26 inserts invalid data into the JPEG data while the vertical synchronization signal and the horizontal synchronization signal are both at the high level. By switching and outputting the JPEG data and invalid data, the overall data length of the JPEG data including the invalid data is set to a fixed length corresponding to the vertical sync signal in the YUV format, and is shown via the output terminal 30. 1 is supplied to the camera IF 13 shown in FIG.

  The file size of JPEG data varies depending on the still image to be subjected to JPEG encoding processing, but by inserting the invalid data into JPEG data, a variable JPEG data file as shown in FIG. The size can be a fixed file size corresponding to the YUV format.

  Next, the camera IF 13 supplied with the JPEG data with the invalid data inserted in this way takes in the JPEG data with the invalid data inserted at the timing of the vertical synchronization signal and the horizontal synchronization signal corresponding to the YUV format. Do. As a result, the camera IF 13 captures JPEG data with invalid data inserted.

For this reason, when the camera IF 13 captures the JPEG data, the camera IF 13 detects invalid data “FF, 02” indicated by a square in FIG. Then, by removing the invalid data, only the JPEG data shown in FIG. 6B is extracted from the JPEG data in which the invalid data is inserted. The control unit 12 controls the memory 11 to store the JPEG data extracted by the camera IF 13 as a still image content. The still image content stored in the memory 11 is subjected to JPEG decoding processing by the control unit 12 at the time of display and is displayed on the display unit 5.

[Effect of the first embodiment]
As is clear from the above description, the mobile phone of this embodiment inserts invalid data defined in the JPEG format for JPEG data having different file sizes depending on the still image to be subjected to JPEG encoding processing. Thus, the file size of the entire JPEG data including the invalid data is output to the camera IF 13 as a fixed file size corresponding to the YUV format. This makes it possible to handle JPEG data in a JPEG format different from YUV data while using the camera IF 13 that captures data at a timing corresponding to the YUV format. In other words, both the YUV data and the JPEG data can be handled by the camera IF 13 corresponding to the YUV format.

  On the camera IF 13 side to which invalid data is inserted, JPEG data can be extracted only by detecting and removing the invalid data inserted. Therefore, the original JPEG data can be easily restored. Note that invalid data functions only between the camera unit 8 and the camera IF 13, and since the invalid data is removed by the camera IF 13, invalid data inserted into the JPEG data during JPEG data decoding processing. Will not interfere with the decoding process.

In addition, when the YUV data from the camera unit 8 is captured via the camera IF 13 and the control unit 12 performs JPEG encoding processing on the captured YUV data in software and saves it in the memory 11, the JPEG encoding processing takes time. Cost. However, in the case of the mobile phone of the embodiment, the JPEG encoding processing unit 24 provided as hardware on the camera unit 8 side performs JPEG encoding processing on the camera unit 8 side, and the JPEG encoded JPEG data is processed. Since the image is taken in via the camera IF 13, the JPEG encoding process can be speeded up.

[Second Embodiment]
Next, a mobile phone according to the second embodiment of the present invention will be described. In the mobile phone according to the first embodiment described above, invalid data is appropriately inserted into the JPEG data and transferred so that the file size of the JPEG data matches the YUV format. . On the other hand, the mobile phone according to the second embodiment transfers the invalid data to the start code of the thumbnail image in order to transfer the thumbnail image (reduced image) created based on the YUV data together with the JPEG data. And used as an end code.

  FIG. 7 is a block diagram of the camera unit 8 provided in the mobile phone according to the second embodiment. In the description of the camera unit 8 shown in FIG. 7, the same reference numerals are given to blocks showing the same operation as the camera unit 8 shown in FIG.

  As can be seen from FIG. 7, the camera unit 8 has a JPEG encoding processing unit 24 that forms JPEG data based on the YUV data from the YUV data forming unit 23 and a predetermined size based on the YUV data from the YUV data forming unit 23. A thumbnail data forming unit 31 for forming the thumbnail images.

  The camera unit 8 also includes a YUV start code forming unit 32 that forms a YUV start code indicating the start position of the thumbnail image in the horizontal synchronization period, and a YUV end code that indicates the end position of the thumbnail image in the horizontal synchronization period. And a YUV end code forming portion 33 to be formed. The YUV start code forming unit 32 and the YUV end code forming unit 33 convert invalid data such as “reservation code” or “prohibition code” defined in the JPEG format described with reference to FIG. It is formed as a YUV end code.

  Specifically, the YUV start code forming unit 32 forms “FF03” as a YUV start code as an example, and the YUV end code forming unit 33 forms “FF04” as a YUV end code as an example. Yes.

  Further, since “FF03” is used as the YUV start code and “FF04” is used as the YUV end code, the thumbnail data forming unit 31 clips the value from “0” to “254” when forming the thumbnail data. Thumbnail data is formed. This prevents the inconvenience of the YFF start code of “FF03” and the YUV end code of “FF04” in the thumbnail data, and the YUV start code and YUV end code can be accurately extracted when extracting the thumbnail data. It is possible to detect thumbnail data and extract thumbnail data.

In addition, the camera unit 8 is configured to transfer each of the data in a “horizontal synchronization method” in which YUV data or JPEG data and thumbnail data are transferred in synchronization with a horizontal synchronization signal. Based on the supplied JPEG data, the thumbnail data supplied from the thumbnail data forming unit 31, the YUV start code supplied from the YUV start code forming unit 32, and the YUV end code supplied from the YUV end code forming unit 33, the horizontal An HSYNC forming unit 34 that processes the timing and the number of signals of the horizontal synchronization signal supplied from the synchronization signal input terminal 28 and supplies the processed signal to the output switching unit 26 is provided.

[Output operation of YUV data in horizontal synchronization method]
When the camera unit 8 of the mobile phone according to the second embodiment is configured to output YUV data according to the above settings, the control unit 12 outputs a data selection control signal for selecting the output of YUV data. The data is supplied to the output switching unit 26 via the data selection control signal input terminal 29 shown in FIG. In this case, the HSYNC forming unit 34 forms a horizontal synchronization signal that is at a high level while the YUV data is being supplied from the YUV data forming unit 23, and supplies this to the output switching unit 26.

  The output switching unit 26 transmits the YUV data from the YUV data forming unit 23 to the camera IF 13 shown in FIG. 1 via the output terminal 30 while the high level horizontal synchronizing signal is supplied from the HSYNC forming unit 34. . As a result, YUV data from the YUV data forming unit 23 is transmitted to the camera IF 13 in synchronization with the horizontal synchronization signal.

When the output setting of YUV data is made by the above setting, the control unit 12 supplies power to the JPEG encoding processing unit 24, the thumbnail data forming unit 31, the YUV start code forming unit 32, and the YUV end code forming unit 33. Stop control. As a result, when outputting the YUV data, the operations of the JPEG encoding processing unit 24, the thumbnail data forming unit 31, the YUV start code forming unit 32, and the YUV end code forming unit 33 can be stopped, thereby reducing unnecessary power consumption. Can be achieved.

[Output operation of JPEG data and thumbnail data in horizontal synchronization method]
Next, when the output setting of the JPEG data is made by the above setting, the control unit 12 outputs a data selection control signal for selecting the output of the JPEG data via the data selection control signal input terminal 29. To supply. In this case, the HSYNC forming unit 34 starts the YUV start from the YUV start code forming unit 32 while the JPEG data is supplied from the JPEG encoding processing unit 24 and the thumbnail data from the thumbnail data forming unit 31 is supplied. While the code is being supplied and while the YUV end code from the YUV end code forming unit 33 is being supplied, a horizontal synchronizing signal that is at a high level is formed and supplied to the output switching unit 26. The output switching unit 26 switches JPEG data, thumbnail data, YUV start code, and YUV end code, respectively, while the high level horizontal synchronization signal is supplied from the HSYNC forming unit 34, and the output switching unit 26 is connected via the output terminal 30. 1 to the camera IF 13 shown in FIG.

  FIGS. 8A to 8D show the output timing of JPEG data and thumbnail data in such a horizontal synchronization method. 8A shows JPEG data output from the JPEG encoding processing unit 24, and FIG. 8B shows a vertical synchronization signal supplied from the vertical synchronization signal input terminal 27 to the output switching unit 26. c) shows the horizontal synchronization signal supplied from the HSYNC forming unit 34 to the output switching unit 26, and FIG. 8D shows the JPEG data, thumbnail data, YUV start code and YUV end code output from the output switching unit 26. Is shown.

  As can be seen from FIG. 8A and FIG. 8C, the HSYNC forming unit 34 forms a high-level horizontal synchronization signal at the timing of JPEG data, as well as thumbnail data, YUV start code, and YUV end code. A high-level horizontal synchronization signal is formed at the timing, and this horizontal synchronization signal is supplied to the output switching unit 26. That is, in the normal horizontal synchronization method, a high-level horizontal synchronization signal is formed only at the timing of JPEG data. In this embodiment, during the output of thumbnail data and the YUV start of this thumbnail data. A high level horizontal synchronizing signal is also formed between the output of the code and the YUV end code and is supplied to the output switching unit 26. Then, the output switching unit 26 switches the JPEG data, the thumbnail data, the YUV start code and the YUV end code of the thumbnail data in synchronization with each horizontal synchronization signal, and outputs them to the camera IF 13. Thereby, the thumbnail data in the YUV format is transmitted to the camera IF 13 together with the JPEG data.

  The camera IF 13 captures JPEG data, thumbnail data, and the YUV start code and YUV end code of the thumbnail data at the timing of the horizontal synchronization signal formed by the HSYNC forming unit 34. Then, JPEG data and thumbnail data are separated by detecting data between the YUV start code of “FF03” and the YUV end code of “FF04” as thumbnail data.

The control unit 12 controls the memory 11 to store the separated JPEG data and thumbnail data. When the display is designated, the thumbnail data is read from the memory 11 and displayed on the display unit 5, or the JPEG data is read from the memory 11, and the JPEG data is subjected to JPEG decoding and displayed. The display is controlled to 5.

[Effect of the second embodiment]
As is clear from the above description, the camera unit 8 of the mobile phone according to the second embodiment includes the JPEG data, the YUV format thumbnail data formed by the thumbnail data forming unit 31, the YUV start code, and the YUV end code. A horizontal synchronization signal that is at a high level is formed between the JPEG data and the thumbnail data sandwiched between the YUV start code and the YUV end code in a timing manner to the camera IF 13 in synchronization with the horizontal synchronization signal. Thereby, the thumbnail data in the YUV format can be transmitted from the camera unit 8 to the camera IF 13 together with the JPEG data.

  On the camera IF 13 side, each data is fetched in synchronization with the horizontal synchronizing signal formed corresponding to each data, and the data between the YUV start code and the YUV end code is detected as thumbnail data. , JPEG data and thumbnail data are separated and stored in the memory 11. Thereby, the thumbnail data transmitted together with the JPEG data can be accurately separated and handled.

  In a system that transmits only JPEG data from the camera unit 8 to the camera IF 13, when displaying a thumbnail image, JPEG decoding processing is performed on the JPEG data transmitted from the camera unit 8 to decode the original image, and the original image is reduced. It is necessary to perform processing to form a thumbnail image, and time is required for the JPEG decoding process and the reduction process. In order to shorten each processing time, it is conceivable to store the thumbnail image formed based on the YUV data in the camera unit 8 and transmit the thumbnail image after transmitting the JPEG data. In this case, a memory for storing the thumbnail image is required on the camera unit 8 side, and the thumbnail image is transmitted separately from the JPEG data.

  However, in the case of the mobile phone according to the second embodiment, since the thumbnail data can be transmitted simultaneously with the JPEG data, a memory for storing the thumbnail data on the camera unit 8 side can be eliminated. The size and cost of the camera unit 8 can be reduced.

  In addition, since JPEG data and thumbnail data can be simultaneously transmitted from the camera unit 8 to the camera IF 13 without providing a transmission time for thumbnail data, the JPEG data and thumbnail data are acquired in real time on the camera IF 13 side. be able to.

Further, since the camera IF 13 side can acquire the thumbnail data together with the JPEG data, the thumbnail data may be displayed as it is on the display unit 5 when displaying the thumbnail image, and the time required for displaying the thumbnail image is reduced. In addition, the reduction function on the camera IF 13 side can be omitted.

[Third Embodiment]
Next, a mobile phone according to a third embodiment of the present invention will be described. In the mobile phone according to the second embodiment described above, the camera unit 8 transmits JPEG data and thumbnail data by the horizontal synchronization method. However, the mobile phone according to the third embodiment includes a camera unit. Reference numeral 8 denotes a transmission of JPEG data and thumbnail data in synchronization with a data clock (DCK) (DCK synchronization method).

  FIG. 9 is a block diagram of the camera unit 8 provided in the mobile phone according to the third embodiment. In the description of the camera unit 8 shown in FIG. 9, the same reference numerals are given to blocks showing the same operations as those of the camera unit 8 shown in FIG.

As can be seen from FIG. 9, the camera unit 8 is supplied via the data clock input terminal 40 together with the above-described JPEG encoding processing unit 24, thumbnail data forming unit 31, YUV start code forming unit 32 and YUV end code forming unit 33. A DCK forming unit 41 that generates a data clock for synchronizing and transmitting the JPEG data, thumbnail data, YUV start code, and YUV end code based on the data clock (DCK) to be supplied to the output switching unit 26 Have.

[YUV data output operation in DCK synchronization]
When the camera unit 8 of the mobile phone according to the third embodiment is configured to output YUV data according to the above settings, the control unit 12 outputs a data selection control signal for selecting the output of YUV data. The data is supplied to the output switching unit 26 via the data selection control signal input terminal 29 shown in FIG. In this case, the DCK forming unit 41 forms a data clock while the YUV data is being supplied from the YUV data forming unit 23, and supplies this to the output switching unit 26.

  The output switching unit 26 transmits YUV data from the YUV data forming unit 23 to the camera IF 13 shown in FIG. 1 via the output terminal 30 while the data clock is supplied from the DCK forming unit 41. Thereby, the YUV data from the YUV data forming unit 23 is transmitted to the camera IF 13 in synchronization with the data clock.

When the output setting of YUV data is made by the above setting, the control unit 12 supplies power to the JPEG encoding processing unit 24, the thumbnail data forming unit 31, the YUV start code forming unit 32, and the YUV end code forming unit 33. Stop control. As a result, when outputting the YUV data, the operations of the JPEG encoding processing unit 24, the thumbnail data forming unit 31, the YUV start code forming unit 32, and the YUV end code forming unit 33 can be stopped, thereby reducing unnecessary power consumption. Can be achieved.

[Output operation of JPEG data and thumbnail data in DCK synchronization method]
Next, when the output setting of the JPEG data is made by the above setting, the control unit 12 outputs a data selection control signal for selecting the output of the JPEG data via the data selection control signal input terminal 29. To supply. In this case, the DCK forming unit 41 performs the YUV start from the YUV start code forming unit 32 while the JPEG data is supplied from the JPEG encoding processing unit 24 and the thumbnail data from the thumbnail data forming unit 31 is supplied. While the code is supplied and while the YUV end code from the YUV end code forming unit 33 is supplied, a data clock is formed and supplied to the output switching unit 26. While the data clock is supplied from the DCK forming unit 41, the output switching unit 26 switches JPEG data, thumbnail data, YUV start code, and YUV end code, respectively, and outputs the camera IF 13 shown in FIG. Send to.

  FIGS. 10A to 10E show output timings of JPEG data and thumbnail data in such a DCK synchronization method. 10A shows the JPEG data output from the JPEG encoding processing unit 24, and FIG. 10B shows the vertical synchronization signal supplied from the vertical synchronization signal input terminal 27 to the output switching unit 26. 10C shows a horizontal synchronizing signal supplied from the horizontal synchronizing signal input terminal 28 to the output switching unit 26. FIG. 10D shows a data clock supplied from the DCK forming unit 41 to the output switching unit 26. (E) shows the JPEG data, thumbnail data, YUV start code, and YUV end code output from the output switching unit 26.

  As can be seen from FIGS. 10 (a) and 10 (d), the DCK forming unit 41 forms a data clock at the timing of JPEG data, and also generates a data clock at the timing of thumbnail data, YUV start code, and YUV end code. And the data clock is supplied to the output switching unit 26.

  That is, in the normal DCK synchronization method, a data clock is formed only at the timing of JPEG data. In this embodiment, the thumbnail data is output and the YUV start code and YUV end of the thumbnail data are output. A data clock is also formed between codes output and supplied to the output switching unit 26. Then, the output switching unit 26 switches JPEG data, thumbnail data, and the YUV start code and YUV end code of the thumbnail data in synchronization with each data clock, and outputs them to the camera IF 13. Thereby, the thumbnail data in the YUV format is transmitted to the camera IF 13 together with the JPEG data.

  The camera IF 13 takes in the JPEG data, thumbnail data, and the YUV start code and YUV end code of the thumbnail data at the timing of the data clock formed by the DCK forming unit 41. Then, JPEG data and thumbnail data are separated by detecting data between the YUV start code of “FF03” and the YUV end code of “FF04” as thumbnail data.

The control unit 12 controls the memory 11 to store the separated JPEG data and thumbnail data. When the display is designated, the thumbnail data is read from the memory 11 and displayed on the display unit 5, or the JPEG data is read from the memory 11, and the JPEG data is subjected to JPEG decoding and displayed. The display is controlled to 5.

[Effect of the third embodiment]
As is apparent from the above description, the camera unit 8 of the mobile phone according to the third embodiment includes the JPEG data, the YUV format thumbnail data formed by the thumbnail data forming unit 31, the YUV start code, and the YUV end code. A data clock is formed between them, and JPEG data and thumbnail data sandwiched between the YUV start code and the YUV end code are transmitted to the camera IF 13 in synchronization with the data clock. Thereby, the thumbnail data in the YUV format can be transmitted from the camera unit 8 to the camera IF 13 together with the JPEG data.

  On the camera IF 13 side, each data is fetched in synchronization with the data clock formed corresponding to each data, and data between the YUV start code and the YUV end code is detected as thumbnail data. JPEG data and thumbnail data are separated and stored in the memory 11. Thereby, the thumbnail data transmitted together with the JPEG data can be accurately separated and handled.

In addition, the mobile phone of the third embodiment can obtain the same effects as the mobile phone of the second embodiment described above.

[Fourth Embodiment]
Next, a mobile phone according to a fourth embodiment of the present invention will be described. The mobile phones of the second and third embodiments described above form a horizontal synchronization signal or data clock synchronized with JPEG data, thumbnail data, YUV start code and YUV end code, and the horizontal synchronization signal or data clock. The above-described data is transmitted from the camera unit 8 side to the camera IF 13 side at the timing, but the mobile phone according to the fourth embodiment inserts the above invalid data into the JPEG data, The file size of the JPEG data is set to a fixed file size corresponding to the YUV format, and the horizontal sync signal is extended for the time corresponding to the thumbnail data, the YUV start code, and the YUV end code. JPEG data (+ invalid data), sum in sync with sync signal Yl data is obtained so as to transmit the YUV start code and YUV end code to the camera IF13 side.

  FIG. 11 is a block diagram of the camera unit 8 provided in the mobile phone according to the fourth embodiment. In the description of the camera unit 8 shown in FIG. 11, the same reference numerals are given to blocks showing the same operations as those of the camera unit 8 shown in FIGS. 1 and 7, and redundant descriptions are omitted.

As can be seen from FIG. 11, the camera unit 8 includes a horizontal synchronization signal together with the invalid data forming unit 25, the JPEG encoding processing unit 24, the thumbnail data forming unit 31, the YUV start code forming unit 32, and the YUV end code forming unit 33. Horizontal synchronization signal for synchronizing JPEG data (+ invalid data), thumbnail data, YUV start code and YUV end code based on a fixed-length horizontal synchronization signal corresponding to the YUV format supplied via the input terminal 28 And an HSYNC forming unit 50 that supplies the output to the output switching unit 26.

[Output operation of YUV data]
When the camera unit 8 of the mobile phone according to the fourth embodiment is configured to output YUV data according to the above settings, the control unit 12 outputs a data selection control signal for selecting output of YUV data. The data is supplied to the output switching unit 26 via the data selection control signal input terminal 29 shown in FIG. In this case, the HSYNC forming unit 50 supplies a fixed-length horizontal synchronization signal corresponding to the YUV format supplied from the horizontal synchronization signal input terminal 28 to the output switching unit 26 as it is.

  The output switching unit 26 transmits YUV data from the YUV data forming unit 23 to the camera IF 13 shown in FIG. 1 via the output terminal 30 in synchronization with a fixed-length horizontal synchronization signal corresponding to the YUV format. As a result, YUV data from the YUV data forming unit 23 is transmitted to the camera IF 13 in synchronization with the horizontal synchronization signal corresponding to the YUV format.

If YUV data output is set according to the above settings, the control unit 12 causes the JPEG encoding processing unit 24, thumbnail data forming unit 31, YUV start code forming unit 32, YUV end code forming unit 33, and invalid data. The power supply to the forming unit 25 is controlled to stop. Thereby, when outputting the YUV data, the operations of the JPEG encoding processing unit 24, the thumbnail data forming unit 31, the YUV start code forming unit 32, the YUV end code forming unit 33, and the invalid data forming unit 25 can be stopped. , Wasteful power consumption can be reduced.

[Output operation of JPEG data and thumbnail data]
Next, when the output setting of the JPEG data is made by the above setting, the control unit 12 outputs a data selection control signal for selecting the output of the JPEG data via the data selection control signal input terminal 29. To supply. In this case, the HSYNC forming unit 50 extends the horizontal synchronization signal in the YUV format corresponding to the invalid data inserted into the JPEG data and the JPEG data by extending the time of the thumbnail data, the YUV start code, and the YUV end code. A synchronization signal is formed and supplied to the output switching unit 26. The output switching unit 26 shows JPEG data, invalid data, thumbnail data, YUV start code, and YUV end code through the output terminal 30 in synchronization with the horizontal synchronization signal subjected to such extension processing, as shown in FIG. It transmits to camera IF13.

  12A to 12D show the output timing of JPEG data and thumbnail data based on such an extended horizontal synchronization signal. 12A shows the JPEG data output from the JPEG encoding processing unit 24, and FIG. 12B shows the vertical synchronization signal supplied from the vertical synchronization signal input terminal 27 to the output switching unit 26. c) shows the horizontal synchronization signal that has been extended from the HSYNC forming unit 50 to the output switching unit 26, and FIG. 12D shows the JPEG data, invalid data, and thumbnails output from the output switching unit 26. Data, YUV start code and YUV end code are shown.

  As can be seen from FIGS. 12 (a) and 12 (c), the HSYNC forming unit 50 generates a horizontal synchronization signal that is at a high level between JPEG data, invalid data, thumbnail data, YUV start code, and YUV end code. And the horizontal synchronizing signal is supplied to the output switching unit 26. That is, the HSYNC forming unit 50 forms a horizontal synchronization signal obtained by performing extension processing for the time of the thumbnail data, the YUV start code, and the YUV end code with respect to the horizontal synchronization signal corresponding to the normal YUV format, This is supplied to the output switching unit 26. Then, the output switching unit 26 switches the JPEG data, invalid data, thumbnail data, and the YUV start code and YUV end code of the thumbnail data in synchronization with the extended horizontal synchronization signal, and outputs them to the camera IF 13. . As a result, as shown in FIG. 13, in the horizontal synchronization method using the fixed-length horizontal synchronization signal that has been subjected to the extension processing, thumbnail data in YUV format is transmitted to the camera IF 13 together with JPEG data (+ invalid data). be able to.

  The camera IF 13 takes in the JPEG data, invalid data, thumbnail data, and the YUV start code and YUV end code of the thumbnail data at the timing of the horizontal synchronization signal formed by the HSYNC forming unit 50. Then, JPEG data and thumbnail data are separated by detecting data between the YUV start code of “FF03” and the YUV end code of “FF04” as thumbnail data.

  Further, the camera IF 13 detects the invalid data of the above-mentioned “FF, 02” from the separated JPEG data, and removes the invalid data, so that only the JPEG data from the JPEG data in the invalid data inserted state is detected. Is extracted (see FIGS. 6A and 6B). The control unit 12 controls the memory 11 to store the JPEG data extracted by the camera IF 13 and the thumbnail data separated by the camera IF 13 respectively.

Then, when the display is designated, the control unit 12 reads out the thumbnail data from the memory 11 and controls display on the display unit 5 or reads out the JPEG data from the memory 11 and performs JPEG decoding processing on the JPEG data. To control display on the display unit 5.

[Effect of the fourth embodiment]
As is clear from the above description, the camera unit 8 of the mobile phone according to the fourth embodiment inserts invalid data into the JPEG data so that the file size of the JPEG data corresponds to the YUV format. In addition to a fixed file size, the horizontal sync signal is extended for the time corresponding to the thumbnail data, YUV start code, and YUV end code, and the JPEG data (+ invalid data) is synchronized with the extended horizontal sync signal. ), Thumbnail data, YUV start code and YUV end code are transmitted to the camera IF 13 side. As a result, JPEG data and thumbnail data can be transmitted simultaneously based on the horizontal synchronization method using the fixed-length horizontal synchronization signal subjected to the extension process, and the same as the mobile phone of each of the above embodiments. An effect can be obtained.

[Modification]
In the above-described embodiment, an example in which the present invention is applied to a mobile phone has been described. However, in addition to the mobile phone, the present invention can be a PHS phone (PHS: Personal Handyphone System) as long as the device has a camera function. The present invention may also be applied to a PDA device (PDA: Personal Digital Assistant), a portable game machine, or a notebook personal computer device. In either case, the same effect as described above can be obtained.

  In the above description of the embodiment, “FF, 02” is used as invalid data, “FF03” is used as a YUV start code, and “FF04” is used as a YUV end code. Yes, the same effect as described above can be obtained by selectively using data (code) other than valid data defined in the format.

  Finally, the present invention is not limited to the above-described embodiments, which are merely disclosed as examples of the present invention. For this reason, as long as it is the range which does not deviate from the technical idea which concerns on this invention, it adds that it is needless to say that various changes are possible according to a design etc. also except the above-mentioned each embodiment. deep.

1 is a block diagram of a mobile phone according to an embodiment to which the present invention is applied. It is a block diagram of the camera part provided in the mobile telephone which becomes 1st Embodiment to which this invention is applied. It is a figure for demonstrating the invalid data inserted in JPEG data in the camera part provided in the mobile telephone of 1st Embodiment. 4 is a time chart for explaining insertion timing of invalid data inserted into JPEG data in the camera unit provided in the mobile phone according to the first embodiment. It is the figure which showed typically the invalid data inserted in JPEG data in the camera part provided in the mobile telephone of 1st Embodiment. It is the figure which showed typically a camera IF provided in the mobile telephone of 1st Embodiment detecting and removing this invalid data from JPEG data in which invalid data was inserted. It is a block diagram of the camera part provided in the mobile telephone which becomes 2nd Embodiment to which this invention is applied. 6 is a time chart showing JPEG data and thumbnail data transmitted based on the horizontal synchronization method in the camera unit provided in the mobile phone according to the second embodiment. It is a block diagram of the camera part provided in the mobile telephone which becomes 3rd Embodiment to which this invention is applied. 10 is a time chart showing JPEG data and thumbnail data transmitted based on a data clock synchronization method in a camera unit provided in a mobile phone according to a third embodiment. It is a block diagram of the camera part provided in the mobile telephone which becomes 4th Embodiment to which this invention is applied. In the camera unit provided in the mobile phone of the fourth embodiment, JPEG data, invalid data, and thumbnail data transmitted based on a horizontal synchronization method using a fixed-length horizontal synchronization signal subjected to extension processing are stored. It is a time chart which shows. FIG. 10 is a diagram schematically illustrating JPEG data, invalid data inserted into JPEG data, and thumbnail data transmitted together with JPEG data in a camera unit provided in a mobile phone according to a fourth embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Antenna, 2 Communication circuit, 3 Speaker part, 4 Microphone part, 5 Display part, 6 Operation part, 7 Light emission part (LED), 8 Camera part, 9 Vibration unit, 10 Timer, 11 Memory, 12 Control part, 13 Camera Interface unit (camera IF), 21 imaging lens, 22 image sensor, 23 YUV data forming unit, 24 JPEG encoding processing unit, 25 invalid data forming unit, 26 output switching unit, 27 vertical synchronizing signal input terminal, 28 horizontal synchronizing signal input Terminal, 29 Data selection control signal input terminal, 30 Output terminal, 31 Thumbnail data formation part, 32 YUV start code formation part, 33 YUV end code formation part, 34 Horizontal sync signal formation part (HSYNC formation part), 40 Data clock input Terminal, 41 Data clock type Generating part (DCK forming part), 50 Horizontal sync signal forming part (HSYNC forming part)

Claims (11)

First still image forming means for forming first format still image data having a fixed file size corresponding to the first format;
Based on the first format still image data formed by the first still image forming means, second format still image data having a variable file size corresponding to a second format different from the first format is formed. Second still image forming means;
Invalid data forming means for forming invalid data defined in the second format;
By operating at a timing corresponding to the first format, the first format still image data from the first still image forming unit and the second format still image data from the second still image forming unit are processed. In addition to selectively switching and outputting the second format still image data, the variable file size can be obtained by inserting invalid data from the invalid data forming means into the second format still image data. The second format still image data is set to the same fixed file size as the first format still image data, and output switching means for outputting the second format still image data at a timing corresponding to the first format. The still image transmission device according to claim 1,
The second still image forming means is hardware, and the still image transmitting device. By operating at the timing corresponding to the first format, the first format still image data having a fixed file size corresponding to the first format, or the variable corresponding to the second format different from the first format. The second format having the same fixed file size as the first format still image data by inserting invalid data defined in the second format to the second format still image data of the file size Receiving means for receiving still image data;
When the second format still image data is received by the receiving means, the invalid data inserted in the received second format still image data is removed to remove the invalid data before the invalid data is inserted. A still image receiving device comprising: invalid data removing means for extracting second format still image data having a variable file size. First still image forming means for forming first format still image data having a fixed file size corresponding to the first format;
Based on the first format still image data formed by the first still image forming means, second format still image data having a variable file size corresponding to a second format different from the first format is formed. Second still image forming means;
Invalid data forming means for forming invalid data defined in the second format;
By operating at a timing corresponding to the first format, the first format still image data from the first still image forming unit and the second format still image data from the second still image forming unit are processed. In addition to selectively switching and outputting the second format still image data, the variable file size can be obtained by inserting invalid data from the invalid data forming means into the second format still image data. A still image transmitting apparatus comprising: output switching means for outputting the second format still image data having the same fixed file size as that of the first format still image data and outputting the same at a timing corresponding to the first format; ,
Receiving means for receiving the first format still image data from the transmission device and the second format still image data in which the invalid data is inserted by operating at a timing corresponding to the first format;
When the second format still image data is received by the receiving means, the invalid data inserted in the received second format still image data is removed to remove the invalid data before the invalid data is inserted. A still image receiving device comprising: invalid data removing means for extracting second format still image data of variable file size. The still image transmitting / receiving apparatus according to claim 4,
The still image transmitting / receiving apparatus according to claim 1, wherein the second still image forming means of the still image transmitting apparatus is hardware. A first still image forming unit forming first format still image data having a fixed file size corresponding to the first format;
Based on the first format still image data formed in the above step, the second still image forming means has a variable file size corresponding to a second format different from the first format. Forming a step;
Invalid data forming means for forming invalid data defined in the second format;
The output switching means operates at a timing corresponding to the first format, whereby the first format still image data from the first still image forming means and the second from the second still image forming means. The format still image data is selectively switched and output, and when the second format still image data is output, invalid data from the invalid data forming means is inserted into the second format still image data. The second format still image data having a variable file size is set to the same fixed file size as the first format still image data, and is output at a timing corresponding to the first format. Method. When the receiving means operates at a timing corresponding to the first format, the first format still image data having a fixed file size corresponding to the first format, or a second format different from the first format The invalid file data defined in the second format is inserted into the second format still image data having a variable file size corresponding to the above, so that the fixed file size is the same as that of the first format still image data. Receiving the second format still image data;
When the second format still image data is received in the step, the invalid data removal means removes the invalid data inserted in the received second format still image data, thereby inserting the invalid data. Extracting the second format still image data of the variable file size before being processed. A first still image forming unit forming first format still image data having a fixed file size corresponding to the first format;
Based on the first format still image data formed in the above step, the second still image forming means has a variable file size corresponding to a second format different from the first format. Forming a step;
Invalid data forming means for forming invalid data defined in the second format;
The output switching means operates at a timing corresponding to the first format, whereby the first format still image data from the first still image forming means and the second from the second still image forming means. The format still image data is selectively switched and output, and when the second format still image data is output, invalid data from the invalid data forming means is inserted into the second format still image data. A variable file size second format still image data having the same fixed file size as the first format still image data, and outputting at a timing corresponding to the first format. Sending step;
The first format still image data transmitted in the still image transmission step or the second format still image data in which the invalid data is inserted by the reception means operating at a timing corresponding to the first format. Receiving the step,
When the second format still image data is received in the step, the invalid data removing means removes the invalid data inserted in the received second format still image data, thereby inserting the invalid data. A still image receiving step comprising: extracting the second format still image data of the variable file size before being processed. An image sensor that forms an imaging signal that is an electrical signal corresponding to the received imaging light;
First still image forming means for forming first format still image data having a fixed file size corresponding to the first format based on an imaging signal from the image sensor;
Based on the first format still image data formed by the first still image forming means, second format still image data having a variable file size corresponding to a second format different from the first format is formed. Second still image forming means;
Invalid data forming means for forming invalid data defined in the second format;
By operating at a timing corresponding to the first format, the first format still image data from the first still image forming unit and the second format still image data from the second still image forming unit are processed. In addition to selectively switching and outputting the second format still image data, the variable file size can be obtained by inserting invalid data from the invalid data forming means into the second format still image data. The second format still image data is set to the same fixed file size as the first format still image data, and output switching means for outputting at a timing corresponding to the first format. The camera device according to claim 9,
Receiving means for receiving the first format still image data from the output switching means or the second format still image data in which the invalid data is inserted by operating at a timing corresponding to the first format; ,
When the second format still image data is received by the receiving means, the invalid data inserted in the received second format still image data is removed to remove the invalid data before the invalid data is inserted. A camera device comprising: invalid data removing means for extracting second format still image data having a variable file size. An image sensor that forms an imaging signal that is an electrical signal corresponding to the received imaging light;
First still image forming means for forming first format still image data having a fixed file size corresponding to the first format based on an imaging signal from the image sensor;
Based on the first format still image data formed by the first still image forming means, second format still image data having a variable file size corresponding to a second format different from the first format is formed. Second still image forming means;
Invalid data forming means for forming invalid data defined in the second format;
By operating at a timing corresponding to the first format, the first format still image data from the first still image forming unit and the second format still image data from the second still image forming unit are processed. In addition to selectively switching and outputting the second format still image data, the variable file size can be obtained by inserting invalid data from the invalid data forming means into the second format still image data. The second format still image data having the same fixed file size as the first format still image data, and an output switching means for outputting at a timing corresponding to the first format,
By operating at the timing corresponding to the first format, the first format still image data from the output switching means of the camera unit or the second format still image data in which the invalid data is inserted is received. Receiving means;
When the second format still image data is received by the receiving means, the invalid data inserted in the received second format still image data is removed to remove the invalid data before the invalid data is inserted. A camera interface comprising: invalid data removing means for extracting second format still image data of variable file size;
Storage control means for storing and controlling the second format still image data from which at least the invalid data from the camera interface is removed in a memory.

Images