JP5575282B2 - Mobile phone - Google Patents

Description

  The present invention relates to a mobile phone, and more particularly to a mobile phone that receives a television broadcast and outputs video and audio.

  2. Description of the Related Art Conventionally, a mobile phone capable of receiving a television broadcast has been provided, and a user can view video and audio on a television even while on a train or walking.

  Some cellphones, especially those that are foldable, are designed to turn off the display when turned into a folded state or to listen to TV sound through earphones to prevent battery consumption. There is.

The user can enjoy television broadcasting by using a method in which the mobile phone is folded according to the surrounding situation and the television sound is heard with an earphone without displaying the television image. (
(See Patent Document 1)

JP 2002-237873 A

  However, when listening to TV sound as BGM without watching TV images, such as in the folded state as described above, the display unit is not only stopped driving, especially for mobile phones with a small battery capacity. In addition, reducing power consumption is an urgent issue.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a mobile phone that can reduce power consumption when a mobile phone that receives a television broadcast listens to TV sound without watching a TV image.

  In order to solve the above-described problems, the mobile phone according to the present invention receives a television broadcast, acquires video and audio related to the broadcast, performs a synchronization process of delaying the audio and synchronizing with the video, and outputs the audio The mobile phone is characterized by comprising output control means for controlling the synchronization processing to be output without delay when a predetermined condition is satisfied, and outputting the acquired voice without delay.

  With the above-described configuration, the mobile phone according to the present invention allows the user to receive the TV video when receiving an operation for hiding the TV video, or when the mobile phone is folded by the user. It is clear that there is no need to delay the television sound in order to synchronize the television image and the television sound, so that the power consumption related to the synchronization processing can be reduced.

  The mobile phone may further include a reception unit that receives a predetermined operation, and the case where the predetermined condition is satisfied may be a case where the reception unit receives the predetermined operation.

  According to this configuration, the mobile phone according to the present invention can accept, for example, a predetermined button operation for listening to TV sound as BGM, so that it can be reliably received by arbitrarily receiving a predetermined button operation from the user. Wasteful power consumption related to the synchronization processing can be reduced.

  Further, the synchronization processing is performed after the audio conversion processing so that the video after the video conversion processing for A / D conversion of the acquired video and the audio after the audio conversion processing for A / D conversion of the acquired audio are synchronized. When the predetermined condition is satisfied, the output control unit further controls the audio conversion process and the video conversion process to output the acquired audio without performing the audio conversion process. It is good to do.

  According to this configuration, the mobile phone according to the present invention does not watch TV video when the user listens to TV sound as BGM, for example. Conversion processing, A / D conversion processing of video signals for displaying television images, and the like are unnecessary, and power consumption related to these conversion processing can be suppressed.

  Further, the mobile phone further includes a display unit for displaying an image, and when the synchronization process is performed, the video after the video conversion process is displayed on the display unit, and the synchronization process is suppressed. Display control means for causing the display means to display an image other than the acquired video image.

  Here, the image other than the acquired video is an image related to a function provided in a mobile phone other than a television, such as an e-mail function and a WEB connection function.

  According to this configuration, in the mobile phone according to the present invention, when the user performs a predetermined operation, the display of the TV image is interrupted and an e-mail is received while listening to the TV sound, or an image related to the e-mail is received. Can be displayed on the display.

  In addition, the mobile phone further includes a release receiving unit that receives a release instruction for releasing the inhibition of the synchronization process, and the output control unit when receiving the release instruction when the synchronization process is being suppressed. Cancels suppression of the synchronization process, the audio conversion process, and the video conversion process, restarts each process, and outputs the audio after the audio conversion process and the synchronization process, and the display control The means may control to display the video after the video conversion processing on the display means.

  According to this configuration, when the user interrupts the display of the TV image and listens to the TV sound as BGM, the mobile phone according to the present invention performs, for example, a button operation for canceling the interrupt of the display of the TV image from the user. By accepting, since the synchronization processing is resumed and the television video and the television audio are output, the user can view the video and the audio without feeling uncomfortable.

  In addition, the mobile phone is a folding mobile phone, and includes a detection unit that detects a state in which the mobile phone is folded, and when the predetermined condition is satisfied, the detection unit detects the state. It is good also as being.

  According to this configuration, when the mobile phone according to the present invention is a folding mobile phone, the mobile phone is folded so that the display is not visible to the user. And processing related to audio synchronization can be suppressed, and power consumption can be reduced.

  Also, a mobile phone that receives a television broadcast, an output unit that outputs video and audio so that the video and audio related to the television broadcast are synchronized, and a display unit that displays the video output by the output unit An operation receiving means for receiving a predetermined operation; and when outputting the video and audio, when the predetermined operation is received, the output of the video by the output means is suppressed, and the video is not related to the television broadcast. It is good also as providing the display control means which controls to display these images.

  According to this configuration, when the user wants to perform an operation such as creating an e-mail while the user is watching TV, the mobile phone according to the present invention outputs TV sound by receiving, for example, a predetermined button operation from the user. However, since the display of the TV video is interrupted and an image related to a specific process such as an e-mail is displayed on the display, the user can view an image other than the TV while listening to the TV sound.

It is a block diagram of the mobile telephone 100 which concerns on this invention. FIG. 3 is a diagram showing a configuration and example contents of a table stored in the mobile phone 100. 6 is an operation flowchart of the mobile phone 100. FIG. FIG. 10 is an operation flowchart relating to synchronization processing of the mobile phone 100. 6 is a diagram showing an example of screen transition of the mobile phone 100. FIG. 1 is an external view of a mobile phone 100. FIG.

  <Embodiment> Hereinafter, a mobile phone according to an embodiment of the present invention will be described.

  <Outline> The mobile phone according to the present invention is capable of receiving an analog television broadcast, and outputs a video display mode for outputting a video associated with the received television broadcast together with a sound associated with the video, and only a sound associated with the received television broadcast. It has a video non-display mode for output, and the mode is switched according to a user operation.

  Here, in the video display mode, A / D conversion processing is performed on the received video signal and audio signal, the audio is delayed so as to be synchronized with the video, and the video signal and the audio signal are output. In the video non-display mode, the received video signal and audio signal are not subjected to A / D conversion processing, and only the received audio signal is output without delay.

  <External appearance> FIG. 6: has shown the external view of the mobile telephone based on this invention.

  The mobile phone 100 includes an upper housing 110 and a lower housing 120.

  The upper housing 110 includes the speaker 17 and the display unit 18, and the lower housing 120 includes the operation unit 16 and the earphone 18.

  The mobile phone 100 receives a television broadcast selected by the user's operation of the operation unit 16, displays a video related to the broadcast on the display unit 19, and outputs audio to the speaker 17.

  <Configuration> FIG. 1 is a functional configuration diagram of a mobile phone 100 according to the present invention.

  The mobile phone 100 includes an antenna 11, a reception unit 12, an audio demodulation unit 13, a video conversion unit 14, an audio conversion unit 15, an operation unit 16, a speaker 17, a display unit 18, and a control unit 20.

  Here, the antenna 11 receives an analog television broadcast radio wave, and the receiving unit 12 has a function of acquiring a video signal and an audio signal of a program selected by the user from the radio wave received via the antenna 11.

  The audio demodulation unit 13 has a function of demodulating the audio signal acquired by the reception unit 12 and transmitting the demodulated audio signal to an audio conversion unit 15 or an audio switching unit 23 described later according to mode information related to video display. Have.

  The video converter 14 has a function of A / D converting the video signal acquired by the receiver 12. For example, in the case of an NTSC video signal, the NTSC signal is sampled to extract a luminance signal and a color difference signal. Then, image processing for displaying the video is performed.

  The audio conversion unit 15 has a function of A / D converting the audio signal demodulated by the audio demodulation unit 13 and a function of D / A converting the A / D converted audio signal.

  As shown in FIG. 6, the operation unit 16 includes a plurality of operation buttons, and has a function of sending a signal corresponding to the button pressed by the user to the control unit 20.

  The speaker 17 has a function of outputting a sound based on the sound signal demodulated by the sound demodulation unit 13 or the sound signal D / A converted by the sound conversion unit 15.

  The display unit 18 is realized by a liquid crystal display or the like, and has a function of displaying an image acquired by the receiving unit 12 and an image related to other functions in the mobile phone 100, such as a mail function.

  The control unit 20 includes a CPU and a memory (ROM and RAM), and has a function of controlling each unit of the mobile phone 100.

  The control unit 20 includes an output control unit 21, a synchronization control unit 22, an audio switching unit 23, and a display control unit 24.

  Here, the output control unit 21 receives a mode switching operation such as pressing a specific button of the operation unit 16 from the user, and stores and updates mode information in a memory such as a RAM for each switching operation; It has a function of controlling the activation of the video conversion unit 14, the audio conversion unit 15, and the synchronization control unit 22 according to the mode information, and a function of sending the mode information to the audio demodulation unit 13.

  The synchronization control unit 22 temporarily stores the audio signal converted by the audio conversion unit 15 in the buffer, reads the audio signal from the buffer in accordance with the output timing of the video signal converted by the video conversion unit 14, and converts the audio signal to the audio conversion unit 15. And a function of sending a video signal to the display control unit 24.

  The audio switching unit 23 has a function of outputting audio related to the audio signal transmitted by the audio demodulating unit 13 or the audio converting unit 15 to the speaker 17.

  The display control unit 24 has a function of causing the display unit 18 to display a video based on the video signal output by the synchronization control unit 22 or an image related to another function in accordance with the mode information.

  <Data> Hereinafter, table data stored in the mobile phone 100 will be described with reference to FIG.

  FIG. 2A shows an example of the configuration and contents of the activation control information table 210.

  The activation control information table 210 is a table showing activation states of the audio conversion unit 15, the synchronization control unit 22, and the image conversion unit 14 in a mode state related to video display. As shown in FIG. An audio conversion unit 212, a synchronization control unit 213, and a video conversion unit 214 that indicate the activation state of each unit are stored in association with each other.

  In the figure, “ON” indicates a start-up state, and standby is set to low power and indicates a standby state.

  FIG. 2B shows a configuration and example contents of the function information table 220.

  In the figure, a function information table 220 stores a function 221 and an operation 222 in association with each other.

  Here, the function 221 stores a function that can be executed by the mobile phone 100.

In addition, the operation 222 stores information indicating whether or not the processing related to each function stored in the function 221 can be performed in parallel while the TV sound is being output in the video non-display mode. The information is indicated as “Yes” when it can be processed in parallel, and when it cannot be processed in parallel, that is, when processing of the function stored in the function 221 is preferentially performed, “priority”.
It is represented by

  In the figure, regarding the telephone function, that is, the process of making / receiving a call, the output of the TV sound is temporarily stopped and the process related to the telephone is preferentially performed.

  FIG. 2C shows a configuration and example contents of the default display information table 230.

  The default display information table 230 stores the state 231 and the display 232 in association with each other.

  A state 232 indicates the state of the mobile phone 100, for example, when the power is turned on or when the mode is shifted to the image non-display mode.

  The display 232 indicates an image to be displayed on the display unit 18 in each state of the state 232.

  <Operation> Hereinafter, the operation of the above-described mobile phone 100 will be described.

  FIG. 3 shows an operation flow diagram of the mobile phone 100.

  Note that the mode information of the mobile phone 100 is initially set to the video display mode, and the video conversion unit 14, the audio conversion unit 15, and the synchronization control unit 22 are activated simultaneously with the activation instruction of the television.

  The control unit 20 receives a television activation instruction from the user via the operation unit 16, and activates the antenna 11 and the reception unit 12 (step S11).

The receiving unit 12 receives a video signal and an audio signal related to a television broadcast selected by the user,
Obtained via the antenna 11, the obtained video signal is sent to the video converting unit 14, and the audio signal is sent to the audio demodulating unit 13 (step S12).

The audio demodulator 13 accepts the audio signal sent from the receiver 12 in step S12, demodulates the received audio signal, and sends the demodulated audio signal to the audio converter 15 (step S13).

  The synchronization control unit 22 synchronizes the video signal processed by the video conversion unit 14 and the audio signal processed by the audio conversion unit 15, sends the video signal to the display control unit 24, and converts the audio signal to audio. Send to unit 15.

  Subsequently, the display control unit 24 displays a video on the display unit 18 based on the video signal transmitted by the synchronization control unit 22. Further, the voice conversion unit 15 performs D / A conversion on the voice signal sent by the synchronization control unit 22 and sends it to the voice switching unit 23, and the voice switching unit 23 outputs the voice based on the voice signal to the speaker 17. (Step S15).

When the output control unit 21 interrupts the video display via the operation unit 16 from the user during the output of video and audio in step S15, that is, accepts a switching operation to the video non-display mode (step S16: Y). The output control unit 21 stores mode information indicating the video non-display mode in the memory, and sends a signal indicating the video non-display mode to the audio demodulation unit 13 and the display control unit 24.

  The output control unit 21 reads the activation control information table 210 and sends a signal indicating that the video conversion unit 14, the audio conversion unit 15, and the synchronization control unit 22 are set to the standby state, and sets each unit to the standby state. (Step S17).

  Subsequent to step S17, the audio demodulating unit 13 demodulates the audio signal received from the receiving unit 12, and sends the demodulated audio signal to the audio switching unit 23. The audio switching unit 23 outputs the received audio signal to the speaker 17. (Step S18).

  Further, the display control unit 24 receives the signal indicating the video non-display mode sent from the output control unit 21 in step S17, reads the default display information table 230, and displays the standby image on the display unit 18 (step S19). .

  Subsequently, when the output control unit 21 receives an operation for resuming video display from the user via the operation unit 16, that is, an operation for switching to the video display mode (step S20: N, step S21: Y), output control is performed. The unit 21 updates the mode information in the memory from the video non-display mode to the video display mode, and sends a signal indicating the video display mode to the audio demodulation unit 13 and the display control unit 24.

The output control unit 21 reads the activation control information table 210 and sends activation signals to the video conversion unit 14, the audio conversion unit 15, and the synchronization control unit 22 to activate each unit (step S).
22) The processing from step S13 described above is performed.

When the switching operation to the video display mode is not accepted in step S21 (step S21: N), the processing from step S18 described above is performed.

In step S20, when the control unit 20 receives an operation for terminating the television from the user via the operation unit 16 (step S20: Y), the power supply to the antenna 11 and the reception unit 12 is stopped, and the audio The switching unit 23 stops outputting sound.

  Here, the video and audio synchronization processing flow in step S14 will be described with reference to FIG.

  In step S <b> 151, the video conversion unit 14 performs A / D conversion on the video signal sent from the reception unit 12 in step S <b> 12 and sends it to the synchronization control unit 22. In addition, the voice conversion unit 15 performs A / D conversion on the voice signal sent from the voice demodulation unit 13 in step S <b> 13, and sends it to the synchronization control unit 22.

  Subsequently, the synchronization control unit 22 stores the audio signal transmitted from the audio demodulation unit 13 in the buffer, and converts the audio signal in the buffer to the audio conversion unit in accordance with the output timing of the video signal transmitted from the video conversion unit 14. 15 to send. Further, the synchronization control unit 22 sends the video signal to the display control unit 24 (step S152).

  <Operation Example> Hereinafter, an operation example of the mobile phone 100 according to the present invention will be described in accordance with the above-described operation flow.

  FIGS. 5A, 5B, and 5C show a portion of the upper casing 110 of the mobile phone 100, and the user does not display video while outputting video and audio related to broadcasting selected by the user. The example of the transition of the screen displayed when mode switching operation is received is shown.

In FIG. 5 (a), the mobile phone 100 activates a television by user operation to receive a baseball broadcast (steps S11 and S12), displays a video 310 related to the broadcast on the display unit 18, and displays a sound 320 as a speaker. 17 shows a state of outputting.

  The audio control unit 22 demodulates the video 310 and the audio 320 shown in the figure by the audio demodulation unit 13, and A / D converts the audio signal by the audio conversion unit 15, and the A / D conversion by the video conversion unit 14. Synchronization processing is performed on the video signal (steps S13 and S14), and the audio switching unit 23 and the display control unit 24 output the video signal and audio signal after the synchronization processing to the speaker 17 and the display unit 19 (step S15). ).

  Subsequently, in FIG. 5B, when the output control unit 21 receives a mode switching operation from the user, the output control unit 21 instructs to display a selection image 411 for selecting whether to interrupt the video display on the video 410. Is sent to the display control unit 24, and the display control unit 24 displays the selected image 411 on the display unit 19 (step S16).

When the output control unit 21 receives an operation indicating interruption of video display from the user (step S1).
6: Y), the mode information in the memory is updated to the video non-display mode, and a signal indicating the video non-display mode is sent to the audio demodulation unit 13 and the display control unit 24.

Subsequently, in FIG. 5C, the output control unit 21 reads the activation control information table 210 and sets the video conversion unit 14, the synchronization control unit 22, and the audio conversion unit 15 to the standby mode.
(Step S17).

  Also, the audio demodulator 13 demodulates the audio signal received by the receiver 12 and sends it to the audio switch 23, and the audio switch 23 outputs the audio 520 to the speaker (step S18). The display control unit 24 reads the default display information table 230 and displays the standby image 510 on the display unit 18 (step S19).

In the figure, when a mail operation or the like is received from the user, the function information table 220 is read, and when the received operation in the video non-display mode is an executable target,
An image related to the function is displayed on the display unit 18.

  <Supplement> Although the mobile phone according to the present invention has been described based on the embodiment, it can be modified as follows, and the present invention is of course not limited to the mobile phone shown in the above-described embodiment. It is.

  (1) In the above-described embodiment, the video display mode and the video non-display mode are switched by the user's button operation. However, in the case of a foldable mobile phone, detection means for detecting the open / closed state of the mobile phone is provided. The detection means may switch to the video non-display mode when detecting the closed state in which the mobile phone is folded. According to this configuration, since the user folds the mobile phone and at the same time suppresses the synchronization processing and the like, it is possible to save the user from the mode switching operation.

  (2) Further, when a CM section is included in the received broadcast, the section may be switched to the video non-display mode.

  In this case, a detection unit that detects whether or not stereo audio is included in the received audio signal is provided. When the detection unit detects a stereo audio part as a CM section, the synchronization control unit 22 The synchronization processing with the video signal corresponding to the audio signal in the CM section may not be performed.

  (3) Moreover, it is good also as switching to a video non-display mode according to the battery remaining charge of a mobile telephone. In this case, a determination unit that determines whether or not the remaining battery level is equal to or less than a certain threshold value is provided. When the determination unit determines that the remaining battery level is equal to or less than the threshold value, the output control unit 21 displays no image. Set the mode to suppress synchronization processing.

  According to this configuration, since the mode is switched to the video non-display mode when the remaining battery level becomes a certain amount or less, the user can use power for other operations while continuously listening to the TV sound.

  (4) Moreover, it is good also as switching to a video non-display mode according to the radio field intensity of the broadcast currently received. In this case, a radio wave determination unit that determines whether or not the intensity of the received radio wave is equal to or less than a certain threshold value, and when the radio wave determination unit determines that the intensity is equal to or less than the threshold value, the output control unit 21 displays no image. Set the mode to suppress synchronization processing.

  According to this configuration, when the radio wave condition is bad and the video is disturbed, it is possible to reduce wasteful power consumption by outputting only TV sound while suppressing the synchronization processing. Further, when the radio wave intensity returns, the synchronization process may be resumed and video and audio may be output.

  (5) A program for causing a processor to execute each process (see FIGS. 3 and 4) in a mobile phone can be recorded on a recording medium or distributed and distributed via various communication paths. Examples of such a recording medium include an IC card, a hard disk, an optical disk, a flexible disk, and a ROM. The distributed and distributed program is used by being stored in a memory or the like that can be read by the processor, and the processor executes the program so that the functions of the mobile phone described in the embodiment are realized. become.

  The mobile phone according to the present invention can be used as a mobile phone capable of receiving TV broadcast and outputting TV video and audio.

11 Antenna 12 Reception Unit 13 Audio Demodulation Unit 14 Video Conversion Unit 15 Audio Conversion Unit 16 Operation Unit 17 Speaker 18 Display Unit 20 Control Unit 21 Output Control Unit 22 Synchronization Control Unit 23 Audio Switch Unit 24 Display Control Unit 100 Mobile Phone 110 Upper Case Body 120 Lower housing

Claims (3)

A mobile phone having a function of receiving a television broadcast,
Output means for outputting video and audio related to the television broadcast;
Display means for displaying the video output by the output means;
Operation accepting means for accepting an operation by a user ;
When outputs the video and audio, when receiving an operation indicating the interruption of the output of the image, to suppress the output of the image by the output section while maintaining the output of the voice, the waiting received screen Control means for displaying on the display means ,
When the control means receives an operation related to a predetermined function while displaying the standby screen on the display means while maintaining the output of the sound, an image related to the function is displayed on the display means. mobile phone that Ru is. Wherein, while the standby screen while maintaining the output of the sound is displayed on the display means, when the operation receiving unit receives an operation indicating the end of reception of the television broadcast, the output The cellular phone according to claim 1, wherein output of sound by the means is stopped. The mobile phone according to claim 1 or 2, wherein the predetermined function includes at least one of a mail function and a Web connection function.