JP2005159661A - Communication terminal and communicating method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a photographed image without deterioration of the quality, irrespective of the operation mode of a camera. <P>SOLUTION: The communication terminal comprises a camera assisting light emitter 18 disposed near a camera 27 for emitting an assisting light at photographing by the camera 27, a power source IC 34 for feeding the camera assisting light emitter 18 with power for emitting the assisting light, a camera operation mode discriminator 32 for discriminating the operation mode of the camera 27 for photographing image information at switching over to a camera mode, and a light quantity setting unit 36 for switching over and setting the power fed to the light emitter 18 from the power feed IC 34 according to the camera operation mode to switch over the light quantity of the assisting light from the light emitter 18 according to the camera operation mode. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a communication terminal apparatus and a communication method having a camera mode in which image information can be captured by an imaging unit of a camera unit.

  In Patent Document 1, a creation screen for creating a text to be sent as an e-mail is displayed on an LCD (Liquid Crystal Display) so that the displayed information can be more effectively prevented from being seen by others. The CCD (Charge Coupled Device) camera captures a predetermined area facing the front of the mobile phone, extracts iris data representing the iris pattern of the person included in the captured image, and stores it in the memory card. It is determined whether or not the iris data of the mobile phone user registered in advance is the same as the iris data, and when the extracted iris data is not the same as the pre-registered iris data, a person other than the user of the mobile phone Has disclosed a mobile terminal in which a warning screen is displayed on the LCD to warn that there is a possibility that the display on the LCD may be peeped.

  As mentioned above, many mobile terminal devices are equipped with a camera, and with the improvement of camera functions, not only still image shooting, but also close-up lens can be used for shooting close-up and shooting is possible. There are many things that can be taken. Further, it can be seen that, for example, by using an auxiliary light at the time of photographing, it is possible to photograph even in an environment with low illuminance.

JP 2003-264877 A

  The conventional camera-equipped mobile terminal device described above may cause problems such as overexposure in the captured image due to strong reflected light when the auxiliary light is emitted during close-up photography or movie shooting. There is a disadvantage that an image of a certain quality cannot be obtained.

  Therefore, an object of the present invention is to provide a communication terminal device and a communication method capable of obtaining a captured image without quality deterioration regardless of the operation mode of the camera.

  In order to solve the above-described problems and achieve the object of the present invention, the communication terminal device of the present invention is disposed in the vicinity of the imaging means, and auxiliary light emitting means for emitting auxiliary light at the time of imaging by the imaging means, and auxiliary light A power supply unit that supplies power for emitting auxiliary light to the light emitting unit, a camera mode determining unit that determines whether or not the camera unit has shifted to a camera mode in which image information can be captured by the imaging unit of the camera unit, and a camera When the mode is changed, the camera operation mode discriminating unit discriminating the operation mode for capturing image information by the imaging unit of the camera unit, and the power source supplied from the power supply unit to the auxiliary light emitting unit according to the camera operation mode is switched. And a light amount setting means for switching the light amount of the auxiliary light of the auxiliary light emitting means in accordance with the camera operation mode.

  Thereby, the amount of auxiliary light of the auxiliary light emitting means can be switched according to the camera operation mode by switching and setting the power supplied from the power supply means to the auxiliary light emitting means according to the camera operation mode. .

  Further, the communication method of the present invention is arranged in the vicinity of the imaging unit, and emits auxiliary light at the time of imaging of the imaging unit by the auxiliary light emitting unit, and a power source for emitting the auxiliary light to the auxiliary light emitting unit. A step of supplying by the power supply means, a step of determining by the camera mode determining means whether or not the camera mode enabling the image information to be imaged by the imaging means of the camera unit, and The step of determining the operation mode for capturing image information by the image pickup means by the camera operation mode determination means, and the power supplied from the power supply means to the auxiliary light emitting means according to the camera operation mode is switched and set by the light quantity setting means Thus, the step of switching the amount of auxiliary light of the auxiliary light emitting means according to the camera operation mode is provided.

  Thereby, the light quantity of the auxiliary light of the auxiliary light emitting means can be switched according to the camera operation mode by the step of switching and setting the power supplied from the power supply means to the auxiliary light emitting means according to the camera operation mode. .

  According to the communication terminal device of the present invention, the auxiliary light can be emitted with an appropriate amount of light according to the camera operation mode by switching the amount of auxiliary light of the auxiliary light emitting means according to the camera operation mode. Regardless of the operation mode, it is possible to obtain a captured image without quality deterioration.

  Further, according to the communication method of the present invention, the step of switching the amount of auxiliary light of the auxiliary light emitting means according to the camera operation mode can emit auxiliary light with an appropriate amount of light according to the camera operation mode, A captured image without quality deterioration can be obtained regardless of the operation mode of the camera.

  FIG. 1 is an external view of a mobile terminal device to which a communication device according to an embodiment of the present invention is applied. FIG. 1A is a front view showing a table, FIG. 1B is a left side view, FIG. 1C is a right side view, FIG. 1D is a rear view showing the back side.

  The mobile terminal device shown in FIG. 1 has a so-called jack-type structure, and can be shifted to the open state by rotating the front surface portion shown in FIG. 1A in the direction of the arrow with respect to the back surface portion shown in FIG. 1D. . FIG. 1 shows a shielded state. A camera mode in which image information is picked up by the image pickup means of the camera unit can be used in a shielded state.

  1A is an input key for enabling a transmission operation, mail editing, and other predetermined operations by a user's pressing operation, and 11a is a moving image / still image having a function of switching between a moving image / still image mode. This is an image changeover switch. The camera operation mode is shifted to the moving image mode or the still image mode by the moving image / still image switching switch 11a.

  1C on the right side surface portion shown in FIG. 1C is a shutter switch having a shutter function with respect to the camera unit activated at the time of moving image capturing and the camera unit at the time of still image capturing by a user's pressing operation. Reference numeral 13 denotes a macro lens switch for mounting a macro lens used for close-up imaging in a mechanical manner with respect to the imaging optical path by a user's slide operation. With the macro lens attached, the camera operation mode shifts to the close-up shooting mode. In this state, for example, information such as a barcode can be read. Accordingly, there are four camera operation modes: a still image mode, a moving image mode, a close-up moving image mode, and a close-up still image mode.

  1B shown in FIG. 1B has a function of disabling key operation by a user's slide operation. When the camera unit is activated by a user's pressing operation, a camera auxiliary light emitting unit 18 described later is turned on or off. This is a camera auxiliary light switch.

  Reference numeral 15 shown in FIG. 1A denotes a jog dial that can be rotated and pressed by the user, and can be input for various operations such as editing mail. Reference numeral 16 denotes a display unit for displaying various operation information and states.

  A back surface portion 17 shown in FIG. 1D is a camera portion that captures image information, and is activated by an operation such as opening a camera cover 19 described later. Reference numeral 18 denotes a camera auxiliary light emitting unit provided in the vicinity of the camera unit 17, which can be turned on or off when the camera unit is activated by pressing the camera auxiliary light switch 14 described above.

  Reference numeral 19 denotes a camera cover. The camera unit 17 and the camera auxiliary light emitting unit 18 are blocked or opened by a user's sliding operation in the direction of the arrow, and the camera unit 17 can be activated in the opened state shown in the figure. Switch to camera mode.

  The camera auxiliary light emitting unit 18 has a function of assisting brightness when the light intensity is insufficient with respect to the imaging means of the camera unit 17, and is composed of, for example, an LED (Light Emitting Diode) and is several tens of centimeters. It has a light intensity enough to reach a subject at a distance of about a meter. The camera auxiliary light emitting unit 18 assists shooting in a dark place, and does not have a light amount like a strobe of a normal camera.

  FIG. 2 is a block diagram showing a configuration of a mobile terminal device to which the communication terminal device according to the embodiment of the present invention is applied. This portable terminal device assumes a configuration applicable to, for example, a W-CDMA (Wideband-Code Division Multiple Access) system.

  At the time of transmission, a transport block (TB: TB) which is a basic unit of data processed by layer 1 (physical layer) in the communication processing unit 3 (unit for transferring data from the MAC (Medium Access Control) layer to Layer 1). After adding a CRC (Cyclic Redundancy Check) code for detecting a block error for each Transport Block), channel coding (error correction coding) and interleaving are performed.

  The interleaved bit sequence is subjected to data modulation after adding overhead such as pilot bits for channel estimation. The in-phase and quadrature components on the phase plane subjected to data modulation mapping are each spread with a spreading code sequence of two layers.

  The spread chip data series is band-limited to a 5 MHz band by a raised cosine root Nyquist filter, converted to an analog signal by a D / A converter, and then orthogonally converted. The intermediate frequency signal orthogonally converted by the RF processing unit 22 is further frequency-converted to a 2 GHz band RF signal, power amplified, and transmitted by radio communication via the antenna 21.

  At the time of reception, in FIG. 2, the received signal inputted to the portable terminal device by radio communication via the antenna 21 is amplified by the low noise amplifier in the RF processing unit 22 and frequency-converted from a high frequency to an intermediate frequency, and then automatically Linearly amplified by a gain control amplifier.

  In the communication processing unit 23, the amplified signal is subjected to quadrature detection to generate in-phase and quadrature components. The in-phase and quadrature component analog signals are converted into digital signals by an A / D converter. Further, the in-phase and quadrature components converted into digital values are band-limited by the root Nyquist filter, and then despread with the same spreading code as the spread code of the received signal, so that a plurality of multipath components having different propagation delay times are obtained. Time separated.

  The time-separated path is subjected to coherent lake combining, and the data sequence after rake combining is subjected to error correction decoding by deinterleaving and channel decoding, binary data determination is performed, and the transmission data sequence is reproduced. Separation of the reproduction data sequence into each transport channel and block error detection are performed, and reproduction data is output.

The output reproduction data is transferred to the upper layer application software processing unit of the control unit 25. When the user inputs a key into the key input unit 24, the upper layer application software processing unit of the control unit 25 displays the reproduction data and the reproduction state on the display unit 26.
Image information picked up by the image pickup means of the camera unit 27 is captured in the image memory of the control unit 25 and then displayed on the display unit 26. After being encoded by the communication processing unit 3, the frequency is converted by the RF processing unit 22. Sent. The camera unit 27 corresponds to the camera unit 17 shown in FIG.

The communication device according to the embodiment of the present invention is applied to the camera unit 27 of the mobile terminal device described above. Hereinafter, this communication apparatus will be described.
FIG. 3 is a diagram showing a light amount setting system of the camera auxiliary light which is the main part of the embodiment of the present invention. First, when the user slides the camera cover 19 in the direction of the arrow shown in FIG. Transition. At this time, the image information picked up by the image pickup means of the camera unit 27 is taken into the image memory of the control unit 25 and then displayed on the display unit 26 to shift to the draft mode.

  When the moving image / still image changeover switch 11a of the key input unit 24 is operated after the camera unit 27 shifts to the camera mode, the camera operation mode determination unit 32 of the CPU 31 of the control unit 25 sets the camera operation mode to the moving image mode or the still image mode. It is determined that has been transferred to.

  When the moving image / still image switch 11a is operated, the camera operation mode determination unit 32 of the CPU 31 of the control unit 25 determines that the camera operation mode has shifted to the still image mode. The operation mode determination unit 32 supplies a still image mode signal to the switch 33. Here, when the camera auxiliary light switch 14 of the key input unit 24 is turned on, the switch 33 is in the same state, and the still image mode signal is supplied to the light amount setting register 35 of the power supply IC 34 via the switch 33. Is done.

  The light amount setting register 35 supplies an output signal to the light amount setting unit 36 so as to output a current value capable of light emission with the highest luminous intensity corresponding to a preset still image mode. The light amount setting unit 36 supplies a current value corresponding to the still image mode to the camera auxiliary light emitting unit 18 of the camera unit 27. Thereby, the camera auxiliary light emitting unit 18 of the camera unit 27 emits light with the highest luminous intensity according to the current value corresponding to the still image mode. At this time, the still image information captured by the imaging unit of the camera unit 27 is captured in the image memory of the control unit 25 and then recorded on the recording medium.

  Further, when the moving image / still image switching switch 11a is operated, the camera operation mode determination unit 32 of the CPU 31 of the control unit 25 determines that the camera operation mode has shifted to the moving image mode. The camera operation mode determination unit 32 supplies a moving image mode signal to the switch 33. Here, when the camera auxiliary light switch 14 of the key input unit 24 is turned on, the switch 33 is in the same state, and the moving image mode signal is supplied to the light amount setting register 35 of the power supply IC 34 via the switch 33. The

  The light amount setting register 35 supplies an output signal to the light amount setting unit 36 so as to output a current value that enables light emission with the next highest luminous intensity after the still image mode corresponding to the preset moving image mode. The light amount setting unit 36 supplies a current value corresponding to the moving image mode to the camera auxiliary light emitting unit 18 of the camera unit 27. As a result, the camera auxiliary light emitting unit 18 of the camera unit 27 emits light with the next highest luminous intensity after the still image mode by the current value corresponding to the moving image mode. At this time, the moving image information picked up by the image pickup means of the camera unit 27 is taken into the image memory of the control unit 25 and then recorded on the recording medium.

  In addition, when the macro lens switch 13 is operated while the moving image / still image switching switch 11a is operated, the camera operation mode determination unit 32 of the CPU 31 of the control unit 25 has shifted to the close-up moving image mode. When it is determined, the camera operation mode determination unit 32 of the CPU 31 of the control unit 25 supplies a close-up moving image mode signal to the switch 33. Here, when the camera auxiliary light switch 14 of the key input unit 24 is turned on, the switch 33 is in the same state, and the close-up moving image mode signal is supplied to the light amount setting register 35 of the power supply IC 34 via the switch 33. Is done.

  The light amount setting register 35 supplies an output signal to the light amount setting unit 36 so as to output a current value capable of light emission with the next highest luminous intensity after the moving image mode corresponding to the preset close-up moving image mode. The light amount setting unit 36 supplies a current value corresponding to the close-up moving image mode to the camera auxiliary light emitting unit 18 of the camera unit 27. As a result, the camera auxiliary light emitting unit 18 of the camera unit 27 emits light with the next highest luminous intensity after the moving image mode by the current value corresponding to the close-up moving image mode. At this time, the close-up moving image information picked up by the image pickup means of the camera unit 27 is taken into the image memory of the control unit 25 and then recorded on the recording medium.

  Further, when the macro lens switch 13 is operated while the moving image / still image switch 11a is operated, the camera operation mode determination unit 32 of the CPU 31 of the control unit 25 shifts the camera operation mode to the close-up still image mode. When it is determined that the camera operation mode is determined, the camera operation mode determination unit 32 of the CPU 31 of the control unit 25 supplies a close-up still image mode signal to the switch 33. Here, when the camera auxiliary light switch 14 of the key input unit 24 is turned on, the switch 33 is turned on, and the close-up still image mode signal is sent to the light amount setting register 35 of the power supply IC 34 via the switch 33. Supplied.

  The light amount setting register 35 supplies an output signal to the light amount setting unit 36 so as to output a current value that can emit light with the lowest luminous intensity corresponding to a preset close-up still image mode. The light amount setting unit 36 supplies a current value corresponding to the close-up still image mode to the camera auxiliary light emitting unit 18 of the camera unit 27. Thereby, the camera auxiliary light emitting unit 18 of the camera unit 27 emits light with the lowest luminous intensity according to the current value corresponding to the close-up still image mode. At this time, the close-up still image information imaged by the imaging means of the camera unit 27 is taken into the image memory of the control unit 25 and then recorded on the recording medium.

FIG. 4 is a flowchart showing the operation of setting the light amount of the camera auxiliary light during a still image. FIG. 4A shows the camera auxiliary light on, and FIG. 4B shows the camera auxiliary light off.
In the operation of turning on the camera auxiliary light by setting the light amount of the camera auxiliary light in the still image shown in FIG. 4A, camera color correction is turned on in step S1. Specifically, before the camera auxiliary light emission unit 18 is turned on, the parameter of the camera photographing color needs to be matched with the LED light source of the camera auxiliary light emission unit 18. Write adjustment values to the camera register.

  In step S2, it is determined whether or not a macro lens is attached. Specifically, the camera operation mode determination unit 32 of the CPU 31 of the control unit 25 determines whether or not the macro lens switch 13 is operated while the moving image / still image switching switch 11a is operated.

When the macro lens is not attached in step S2, the current value for setting the light amount of the camera auxiliary light is set to 17.33 mA in step S3. Specifically, when the camera operation mode determination unit 32 of the CPU 31 of the control unit 25 determines that the camera operation mode has shifted to the still image mode, the camera operation mode determination unit 32 of the CPU 31 of the control unit 25 determines that the camera operation mode has changed to the still image mode. The signal is supplied to the light amount setting register 35 of the power supply IC 34 via the switch 33. The light amount setting register 35 of the power supply IC 34 supplies an output signal with the highest current value of 17.33 mA for the still image mode to the light amount setting unit 36. The light amount setting unit 36 supplies a current value corresponding to the still image mode to the camera auxiliary light emitting unit 18 of the camera unit 27.
Thereby, in step S5, the camera auxiliary light light emitting unit 18 of the camera unit 27 emits light with the highest luminous intensity according to the current value corresponding to the still image mode.

When the macro lens is mounted in step S2, the current value for setting the light amount of the camera auxiliary light is set to 2.67 mA in step S4. Specifically, when the camera operation mode determination unit 32 of the CPU 31 of the control unit 25 determines that the camera operation mode has shifted to the close-up still image mode, the camera operation mode determination unit 32 of the CPU 31 of the control unit 25 detects the close-up still image. The image mode signal is supplied to the light amount setting register 35 of the power supply IC 34 via the switch 33. The light amount setting register 35 of the power supply IC 34 supplies an output signal having the lowest current value of 2.67 mA for the close-up still image mode to the light amount setting unit 36. The light amount setting unit 36 supplies a current value corresponding to the close-up still image mode to the camera auxiliary light emitting unit 18 of the camera unit 27.
Thereby, in step S5, the camera auxiliary light emitting unit 18 of the camera unit 27 emits light with the lowest luminous intensity according to the current value corresponding to the close-up still image mode.

In the camera auxiliary light off operation shown in FIG. 4B, the camera color correction is turned off in step S6. Specifically, the content of the camera register of the camera unit 27 is returned to the original setting value (correction adjustment value when turned off) in order to match the natural light. However, when the power of the camera unit 27 is turned off after the camera auxiliary light emitting unit 18 is turned on, the contents of the camera register are reset. Therefore, the correction adjustment value when the camera auxiliary light emitting unit 18 is turned off is changed. It does not have to be written.
In step S7, the camera auxiliary light is turned off.

FIG. 5 is a flowchart showing the operation of setting the light amount of the camera auxiliary light during moving images. FIG. 5A shows the camera auxiliary light on, and FIG. 5B shows the camera auxiliary light off.
In the operation of turning on the camera auxiliary light by setting the light amount of the camera auxiliary light at the time of moving image shown in FIG. 5A, camera color correction is turned on in step S11. Specifically, before the camera auxiliary light emission unit 18 is turned on, the parameter of the camera photographing color needs to be matched with the LED light source of the camera auxiliary light emission unit 18. Write adjustment values to the camera register.

  In step S12, it is determined whether or not a macro lens is attached. Specifically, the camera operation mode determination unit 32 of the CPU 31 of the control unit 25 determines whether or not the macro lens switch 13 is operated while the moving image / still image switching switch 11a is operated.

When the macro lens is not attached in step S12, the current value of the light amount setting of the camera auxiliary light is set to 10.67 mA in step S13. Specifically, when the camera operation mode determination unit 32 of the CPU 31 of the control unit 25 determines that the camera operation mode has shifted to the moving image mode, the camera operation mode determination unit 32 of the CPU 31 of the control unit 25 outputs the moving image mode signal. This is supplied to the light amount setting register 35 of the power supply IC 34 via the switch 33. The light amount setting register 35 of the power supply IC 34 supplies the light amount setting unit 36 with an output signal having a current value of 10.67 mA that is the second highest after the still image mode for the moving image mode. The light amount setting unit 36 supplies a current value corresponding to the moving image mode to the camera auxiliary light emitting unit 18 of the camera unit 27.
Thereby, in step S15, the camera auxiliary light emitting unit 18 of the camera unit 27 emits light with the next highest luminous intensity after the still image mode by the current value corresponding to the moving image mode.

When the macro lens is mounted in step S12, the current value for setting the light amount of the camera auxiliary light is set to 6.67 mA in step S14. Specifically, when the camera operation mode determination unit 32 of the CPU 31 of the control unit 25 determines that the camera operation mode has shifted to the close-up video mode, the camera operation mode determination unit 32 of the CPU 31 of the control unit 25 determines that the close-up video mode The signal is supplied to the light amount setting register 35 of the power supply IC 34 via the switch 33. The light amount setting register 35 of the power supply IC 34 supplies the light amount setting unit 36 with an output signal having a current value of 6.67 mA that is the second highest after the moving image mode for the close-up moving image mode. The light amount setting unit 36 supplies a current value corresponding to the close-up moving image mode to the camera auxiliary light emitting unit 18 of the camera unit 27.
Thereby, in step S15, the camera auxiliary light emitting unit 18 of the camera unit 27 emits light with the next highest luminous intensity after the moving image mode by the current value corresponding to the close-up moving image mode.

In the camera auxiliary light off operation shown in FIG. 5B, the camera color correction is turned off in step S16. Specifically, the content of the camera register of the camera unit 27 is returned to the original setting value (correction adjustment value when turned off) in order to match the natural light. However, when the power of the camera unit 27 is turned off after the camera auxiliary light emitting unit 18 is turned on, the contents of the camera register are reset. Therefore, the correction adjustment value when the camera auxiliary light emitting unit 18 is turned off is changed. It does not have to be written.
In step S17, the camera auxiliary light is turned off.

FIG. 6 is a diagram illustrating a configuration of the light amount setting register.
In FIG. 6, the light amount setting method is such that the current value supplied to the camera auxiliary light emitting unit 18 by the 4-bit WLED-VR0 to WLED-VR3 (bit0 to bit3) indicated by 61 to 64 is given to the light amount setting unit 36. It is configured to be settable, and is configured to be able to control the on / off of the light emission operation of the camera auxiliary light emitting unit 18 by WLED-VR-ON (bit 4) indicated by 65 and WVR-MSK (bit 5) indicated by 66.

FIG. 7 is a diagram illustrating the correspondence between the light amount setting register value and the output current value.
In FIG. 7, the light amount setting register value WLED-VR [3: 0] indicated by hexadecimal numbers from 0 to F indicated by 72 and binary from 0000 to 1111 indicated by 73 in accordance with the camera operation mode indicated by 71 in FIG. One of the output currents indicated by the light quantity setting register values WLED-VR [3: 0] and 74 indicated by numerals is set correspondingly. Here, when the camera operation mode 71 is a still image, the highest current value 74 is 17.33 mA, and when the camera operation mode 71 is a moving image, the next highest current value 74 is 10.67 mA, the camera operation mode 71 When is close-up (macro shooting) video, the current value 74 is set to 6.67 mA, which is the next highest, and when the camera operation mode 71 is close-up (macro shooting) still image, the lowest current value 74 is set to 2.67 mA. The In addition, the present invention is not limited to this, and in each imaging mode, switching may be performed by gradually decreasing the light amount from the start of imaging of the camera unit 27 to the time of capturing image information. These values are set based on values measured in advance.

Here, the current value is set to be the brightest for a still image, but the current value is lowered to prevent reflection during a moving image. In addition, the current value is reduced during close-up (macro shooting) compared to normal shooting.
In particular, the current values of still images and moving images are reversed in the close-up (macro shooting) mode compared to the normal shooting mode. This is because during close-up (macro shooting), in still images, it is desirable to further reduce the amount of current and supply more power to the shooting operation.

FIG. 8 is a diagram illustrating control of the output state of the light amount setting register.
In FIG. 8, when the values of WVR-MSK indicated by 82 and WLED-VR-ON indicated by 83 in the light quantity setting register WLED-CNT indicated by 81 are (0, 1), the output state indicated by 84 is as described above. Control is performed so that the camera auxiliary light emitting unit 18 is lit at the current value set by the 4-bit light amount setting register value WLED-VR [3: 0]. When the values of WVR-MSK indicated by 82 and WLED-VR-ON indicated by 83 in the light quantity setting register WLED-CNT indicated by 81 are (1, 1), the output state indicated by 84 indicates the above-described 4-bit light quantity. Control is performed so that the camera auxiliary light emitting unit 18 is lit at the maximum current value set by F indicated by hexadecimal digits of the setting register value WLED-VR [3: 0]. When the values of WVR-MSK indicated by 82 and WLED-VR-ON indicated by 83 in the light quantity setting register WLED-CNT indicated by 81 are (−, 0), the output state indicated by 84 indicates that the camera auxiliary light emitting unit 18 Control to turn off.

FIG. 9 is a diagram illustrating camera auxiliary light setting values in each camera operation mode.
In FIG. 9, when the camera operation mode indicated by 91 is a still image, the adjustment value number indicated by 92 is 324, the adjustment content indicated by 93 is the light quantity setting register value WLED-VR [ 3: 0] is 17.33 mA, the highest output current value indicated by 1101 and 95. When the camera operation mode indicated by 91 is a moving image, the adjustment value number indicated by 92 is 323, the adjustment content indicated by 93 is the light quantity setting register value WLED-VR [3: 0] indicated by the binary digits indicated by the light quantity settings 1 and 94. The output current values indicated by 1000 and 95 are 10.67 mA, which is the second highest after the still image. When the camera operation mode indicated by 91 is a close-up (macro photography) still image, the adjustment value number indicated by 92 is 326, the adjustment content indicated by 93 is the light quantity setting register value WLED-VR indicated by the binary number indicated by light quantity setting 4 and 94 [3: 0] is 2.67 mA, which is the lowest output current value indicated by 0010 and 95. When the camera operation mode shown by 91 is a close-up (macro shooting) moving image, the adjustment value number shown by 92 is 325, the adjustment content shown by 93 is the light quantity setting register value WLED-VR [ 3: 0] is 0671, 95, and the output current value is 6.67 mA, which is the next highest during moving images.

  As described above, the camera auxiliary light emitting unit 18 can be arbitrarily turned on or off by the user's operation on the camera auxiliary light switch 14 of the key input unit 24, and is determined by the camera operation mode determination unit 32 described above. The light amount can be switched and controlled by four camera operation modes of a still image, a moving image, a close-up moving image, and a close-up still image.

  At this time, the on / off and light quantity of the camera auxiliary light emitting unit 18 can be controlled by the set value of the light quantity setting register 35 of the power supply IC 34. The light intensity setting register 35 of the power supply IC 34 uses 1-bit information to turn on or off the camera auxiliary light emission unit 18 and uses 4-bit information to set the light intensity, and can be set in up to 16 steps. It is. The light amount setting register 35 of the power supply IC 34 stores the light amount setting value as an adjustment value, and the still image, the moving image, the close-up moving image, and the close-up still image determined by the camera operation mode determination unit 32 described above. The setting value is read for each camera operation mode.

  FIG. 10 is a time chart showing the operation of setting the light amount of the auxiliary camera light. FIG. 10A is a camera mode signal, FIG. 10B is a light amount setting register setting WVR-MSK, and FIG. 10C is a light amount setting register setting WLED-VR-ON. FIG. 10D is a camera operation mode signal.

  The camera mode signal shown in FIG. 10A is obtained at time T1 by changing the camera unit 17 and the camera auxiliary light 18 from the shielded state to the opened state by the user's sliding operation in the arrow direction of the camera cover 19 shown in FIG. When the camera unit 27 is activated and shifts to the camera mode, the control unit 25 supplies the light amount setting register 35 of the power supply IC 34.

  In FIG. 10B, the light amount setting register setting WVR-MSK (bit 5) remains at a low level. The light amount setting register setting WLED-VR-ON (bit 4) shown in FIG. 10C becomes a high level at time T2 when the camera auxiliary light switch 102 is turned on. At this time, as indicated by 101, the light amount setting register value WLED-VR [] set for each of the four camera operation modes of the still image, moving image, close-up moving image, and close-up still image determined by the camera operation mode determination unit 32 described above. The output current value corresponding to the adjustment value of 3: 0] is supplied from the power supply IC 34 to the camera auxiliary light light emitting unit 18, and the camera auxiliary light light emitting unit 18 emits light with a light amount corresponding to each of the four camera operation modes.

  At this time, the camera operation mode signal shown in FIG. 10D is changed to the draft mode indicated by 105 by the control unit 25, and the image information captured by the imaging unit of the camera unit 27 is taken into the image memory of the control unit 25 and then displayed on the display unit. 26.

  At time T3, when the shutter switch 12 is pressed as shown at 103, the camera operation mode discrimination unit 32 of the CPU 31 of the control unit 25 discriminates the camera operation mode, and as shown at 106, the still image or moving image shooting mode. Migrate to When the macro lens switch 13 is operated, the camera operation mode determination unit 32 of the CPU 31 of the control unit 25 shifts to a close-up (macro shooting) still image or close-up (macro shooting) moving image shooting mode. At this time, the image information picked up by the image pickup means of the camera unit 27 is captured in the image memory of the control unit 25 and then recorded on the recording medium.

  When the shutter switch 12 is returned at time T4, the control unit 25 enters the draft mode indicated by 107, and the image information captured by the imaging means of the camera unit 27 is taken into the image memory of the control unit 25 and then the display unit 26 Is displayed.

  At time T5, if no key input is made by the key input unit 24 in the draft mode indicated by 107, the draft mode 107 is terminated, the camera auxiliary light switch indicated by 104 is turned off, and the camera mode signal is low level at time T6. Then, the camera mode ends.

BRIEF DESCRIPTION OF THE DRAWINGS It is an external view of the portable terminal device with which the communication apparatus of embodiment of this invention is applied, FIG. 1A is a front view which shows a table | surface, FIG. 1B is a left view, FIG. 1C is a right view, FIG. FIG. It is a block diagram which shows the structure of a portable terminal device. It is a figure which shows the light quantity setting system of the camera auxiliary light of the principal part of embodiment of this invention. FIG. 4A is a flowchart showing the operation of setting the light amount of the camera auxiliary light during a still image, FIG. 4A shows the camera auxiliary light on, and FIG. 4B shows the camera auxiliary light off. FIG. 5A is a flowchart illustrating an operation of setting a light amount of a camera auxiliary light during a moving image. FIG. 5A illustrates camera auxiliary light on, and FIG. 5B illustrates camera auxiliary light off. It is a figure which shows the structure of a light quantity setting register. It is a figure which shows a response | compatibility with a light quantity setting register value and an output electric current value. It is a figure which shows control of the output state of a light quantity setting register. It is a figure which shows the camera auxiliary light setting value at the time of each camera operation mode. FIG. 10A is a camera mode signal, FIG. 10B is a light amount setting register setting WVR-MSK, FIG. 10C is a light amount setting register setting WLED-VR-ON, and FIG. 10D is a camera. This is an operation mode signal.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... Input key, 11a ... Movie / still image switch, 12 ... Shutter switch, 13 ... Macro lens switch, 14 ... Camera auxiliary light switch, 15 ... Jog dial, 16 ... Display part, 17 ... Camera, 18 ... Camera auxiliary light Light emitting part, 19 ... Camera cover, 21 ... Antenna, 22 ... RF processing part, 23 ... Communication processing part, 24 ... Key input part, 25 ... Control part, 26 ... Display part, 27 ... Camera part, 31 ... CPU, 32 ... Camera operation mode judgment unit 33 ... Switch 34 ... Power supply IC 35 ... Light amount setting register 36 ... Light amount setting unit 61-64 ... WLED-VR0 to WLED-VR3, 65 ... WLED-VR-ON, 66 ... WVR-MSK, 71 ... Camera operation mode, 72 ... Hexadecimal digit light amount setting register value WLED-VR [3: 0], 73 ... Binary digit light amount setting register value WLED-VR [3: 0], 74 ... Output current, 81 .. Light quantity setting resist WLED-CNT, 82 ... WVR-MSK, 83 ... WLED-VR-ON, 84 ... Output state, 91 ... Camera operation mode, 92 ... Adjustment value number, 93 ... Adjustment content, 94 ... Binary digit light quantity setting register Value WLED-VR [3: 0], 95 ... Output current, 101 ... Adjustment value of light quantity setting register value WLED-VR [3: 0], 102 ... Camera auxiliary light on, 103 ... Shutter switch pressed, 104 ... Camera auxiliary Light off, 105 ... Draft mode, 106 ... Still image or video shooting mode, 107 ... Draft mode

Claims (6)

In a communication terminal device that performs communication processing by a communication processing unit on input information to be transmitted including image information captured by an imaging unit of a camera unit and transmits the information via wireless communication.
An auxiliary light emitting means that is disposed in the vicinity of the imaging means and emits auxiliary light during imaging of the imaging means;
Power supply means for supplying power for emitting auxiliary light to the auxiliary light emitting means;
Camera mode discrimination means for discriminating whether or not a transition to a camera mode in which image information can be taken by the imaging means of the camera unit;
Camera operation mode discrimination means for discriminating an operation mode in which image information is imaged by the imaging means of the camera unit when the camera mode is entered;
The amount of light for switching the amount of auxiliary light of the auxiliary light emitting means according to the camera operation mode by switching and setting the power supplied from the power supply means to the auxiliary light emitting means according to the camera operation mode Setting means;
A communication terminal device comprising: The communication terminal device according to claim 1,
The camera operation mode is a still image, moving image, close-up still image, or close-up moving image capturing mode, and switching is performed in the order of still image, moving image, close-up movie, and close-up still image in order of increasing light intensity. Terminal device. The communication terminal device according to claim 2,
A communication terminal apparatus, wherein the light quantity is switched in stages from the start of imaging by the imaging means to the time of capturing image information in each imaging mode. In a communication method of performing communication processing in a communication processing unit on input information to be transmitted including image information captured by an imaging unit of a camera unit and transmitting the information via a wireless communication by a communication terminal device,
A step of being arranged in the vicinity of the imaging means and emitting auxiliary light at the time of imaging of the imaging means by the auxiliary light emitting means;
Supplying power for emitting auxiliary light to the auxiliary light emitting means by power supply means;
A step of determining by the camera mode determination means whether or not a transition to a camera mode in which image information can be captured by the imaging means of the camera unit;
Determining the operation mode for capturing image information by the image capturing means of the camera unit by the camera operation mode determining means when shifting to the camera mode;
According to the camera operation mode, the power supplied from the power supply means to the auxiliary light emitting means is switched and set by the light amount setting means, so that the auxiliary light of the auxiliary light emitting means is changed according to the camera operation mode. A step of switching the amount of light;
A communication method comprising: The communication method according to claim 4, wherein
The camera operation mode is a still image, moving image, close-up still image, or close-up moving image capturing mode, and switching is performed in the order of still image, moving image, close-up movie, and close-up still image in order of increasing light intensity. Method. The communication method according to claim 5, wherein
A communication method characterized in that, in each of the imaging modes, the amount of light is switched step by step from the start of imaging by the imaging means to the time of capturing image information.

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