JP2009026377A - Onboard information playback device, portable information playback device and control method and control program of onboard information playback device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce an operation load of software and to correctly display time related to playback on an onboard instrument side. <P>SOLUTION: In an on-vehicle audio visual device 11 connected to a portable player 13 having a communication function via a communication network, when cooperation with the portable player 13 to playback information is performed based on information played back by the portable player, information of time related to playback is intermittently received for every prescribed timing from the portable player 13 via the communication network and time related to playback corresponding to the received information of time related to playback is displayed while being altered. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an in-vehicle information reproducing apparatus, a portable information reproducing apparatus, a control method and a control program for reproducing in-vehicle music and images, and particularly related to reproduction such as elapsed reproduction time and remaining reproduction time. The present invention relates to a technique for displaying time information.

In recent years, a portable music player as a portable information reproducing apparatus has a compact configuration and can carry a large amount of music data. There is an increasing need to connect to a system for playback, and various systems for realizing this have been proposed (see, for example, Patent Document 1).
However, when the portable music player is simply connected to the in-vehicle audio system, it is necessary to perform the reproduction operation directly on the portable music player side, which is not preferable from the viewpoint of safety.
In order to solve this problem, the portable music player is connected to the in-vehicle audio system via a wireless communication network so that the portable music player can be controlled by operating the operation panel of the in-vehicle audio system. Accordingly, there has been proposed one that performs music reproduction, reproduction music switching, trick play switching, and the like.

In this case, since the playback related time such as the playback elapsed time and the remaining playback time of the playback music is managed on the portable music player side, when the playback related time is displayed on the in-vehicle audio system side, the in-vehicle audio system Makes an inquiry to the portable music player side at every display update timing (for example, every second) of the in-vehicle audio system, and displays on the in-vehicle audio system side based on reproduction-related time information included in the response of the portable music player The related time was to be updated.
JP 2002-178857 A

According to the above configuration, a request and response for reproduction-related time information via the wireless communication network requires a certain execution time. However, the wireless environment is deteriorated or other commands that are simultaneously processed in parallel are processed. As a result, the display update of the reproduction-related time information is delayed, and the reproduction operation becomes unstable.
Further, in the exchange of data through the wireless communication network, the load required for executing the software increases due to the complexity of the procedure.
Accordingly, an object of the present invention is to control the in-vehicle information reproducing apparatus, the portable information reproducing apparatus, and the in-vehicle information reproducing apparatus capable of reducing the operation load of software and accurately displaying the reproduction-related time on the in-vehicle apparatus side. It is to provide a method and a control program.

In order to solve the above-described problem, a first aspect of the present invention is an in-vehicle information reproducing apparatus connected to a portable information reproducing apparatus having a communication function via a communication network, and reproduced by the portable information reproducing apparatus. When the information reproduction is performed in cooperation with the portable information reproducing apparatus based on the information that has been performed, the reproduction related time information is intermittently received from the portable information reproducing apparatus at predetermined timings via the communication network. The reproduction-related time information receiving unit and a reproduction-time display unit that updates and displays the reproduction-related time corresponding to the received reproduction-related time information.
According to the above configuration, the reproduction-related time information receiving unit performs the portable information reproduction when performing information reproduction in cooperation with the portable information reproduction device based on the information reproduced by the portable information reproduction device. Reproduction-related time information is intermittently received from the apparatus at predetermined timings via the communication network.
The reproduction time display unit updates and displays the reproduction related time corresponding to the received reproduction related time information.

In addition, in the second aspect, in the first aspect, the reproduction related time corresponding to the reproduction related time information received this time is obtained by updating the reproduction related time corresponding to the previously received reproduction related time information. A display time correction unit is provided for displaying on the reproduction time display unit while correcting the deviation to be equal to or less than a predetermined amount until reception of the next reproduction related time information when there is a deviation from the related time. It is characterized by.
Moreover, the 3rd aspect WHEREIN: The information request | requirement part which performs the transmission request | requirement of the said reproduction related time information with respect to the said portable information reproducing | regenerating apparatus for every said predetermined timing in the 1st aspect or the 2nd aspect was provided. It is characterized by.
According to a fourth aspect, in the aspect according to any one of the first to third aspects, the reproduction-related time is an elapsed reproduction time or a remaining reproduction time.

A fifth aspect is a portable information reproducing apparatus connected to the in-vehicle information reproducing apparatus according to any one of the first to fourth aspects via the communication network, wherein the communication network is A reproduction-related time information transmitting unit for transmitting the reproduction-related information via the network.
A sixth aspect is a portable information reproducing apparatus connected to the in-vehicle information reproducing apparatus of the third aspect via the communication network, and receives the transmission request received via the communication network. And a reproduction related time information transmitting unit for transmitting reproduction related information via the communication network.

  A seventh aspect is a control method for an in-vehicle information reproducing apparatus for controlling an in-vehicle information reproducing apparatus connected to a portable information reproducing apparatus having a communication function via a communication network, the portable information reproducing apparatus When information reproduction is performed in cooperation with the portable information reproducing device based on information reproduced by the reproducing device, the reproduction related time is intermittently transmitted from the portable information reproducing device at predetermined timings via the communication network. It is characterized by comprising a reproduction related time information reception process for receiving information and a reproduction time display process for updating and displaying the reproduction related time corresponding to the received reproduction related time information.

  An eighth aspect is a control program for controlling an in-vehicle information reproducing apparatus for controlling an in-vehicle information reproducing apparatus connected to a portable information reproducing apparatus having a communication function via a communication network. When the information reproduction is performed in cooperation with the portable information reproducing device based on the information reproduced by the portable information reproducing device, the portable information reproducing device transmits the information via the communication network at every predetermined timing. The reproduction-related time information is intermittently received, and the reproduction-related time corresponding to the received reproduction-related time information is updated and displayed.

  ADVANTAGE OF THE INVENTION According to this invention, while reducing the operating load of software, the reproduction related time in the vehicle equipment side can be displayed correctly.

Next, a preferred embodiment of the present invention will be described.
FIG. 1 is a block diagram showing the main configuration of an in-vehicle audiovisual system.
The in-vehicle audio visual system 10 is roughly divided into an in-vehicle audio visual apparatus 11 mounted on a vehicle and a wireless network 12 configured as a short-range wireless communication network to the in-vehicle audio visual apparatus 11. And a portable player 13 that outputs an audio signal or a video signal to the in-vehicle audio visual apparatus 11.

FIG. 2 is a schematic configuration block diagram of the in-vehicle audio visual apparatus.
The in-vehicle audio visual apparatus 11 roughly includes a control unit 21, an operation unit 22, a display unit 23, an image processing unit 24, a recording medium playback unit 25, a power amplifier unit 26, a speaker unit 27, and a wireless communication unit 28. ing.

The control unit 21 functions as a computer that controls the in-vehicle audiovisual apparatus 11 as a whole, and includes a CPU (Central Processing Unit) 31, a ROM (Read Only Memory) 32 that stores a control program executed by the CPU 31, and various data. RAM (Random Access Memory) 33 is temporarily stored.
The operation unit 22 includes an operation switch operated by the user, inputs an operation instruction from the user via the operation switch, and notifies the control unit 21 of the operation instruction.
The display unit 23 includes a liquid crystal display, and displays various images (a still image and a moving image) including a character image under the control of the control unit 21.

The image processing unit 24 decodes the input image data and outputs it to the display unit 23 as an image signal.
The recording medium playback unit 25 includes a playback device for a semiconductor recording medium such as an optical disk medium such as a CD or a DVD or a memory card, and reads audio data recorded on the CD, DVD, or memory card under the control of the control unit 21. A decoding process is performed to generate an audio analog signal, which is output to the power amplifier unit 26. Further, the recording medium playback unit reads out image data (still image data or moving image data) recorded on a CD, DVD, or memory card under the control of the control unit 21, and outputs it to the image processing unit 24.
FIG. 3 is a schematic configuration block diagram of the portable player.
The portable player 13 roughly includes a control unit 41, an operation unit 42, a display unit 43, a recording medium playback unit 44, an image processing unit 45, a headphone amplifier unit 46, and a wireless communication unit 47.

The control unit 41 functions as a computer that controls the in-vehicle audio visual apparatus 11 as a whole, and includes a CPU 51, a ROM 52 that stores a control program executed by the CPU 51, and a RAM 53 that temporarily stores various data.
The operation unit 42 includes an operation switch operated by the user, inputs an operation instruction from the user via the operation switch, and notifies the control unit 21 of the operation instruction.
The display unit 43 includes a liquid crystal display, and displays various images (still images, moving images) including character images under the control of the control unit 21.

The recording medium playback unit 44 includes a playback device for a magnetic recording medium such as a hard disk or a semiconductor recording medium such as a memory card, and reads audio data recorded on the hard disk or memory card under the control of the control unit 21 and performs a decoding process. The sound analog signal is generated and output to the headphone amplifier unit 46. Further, the image data (still image data or moving image data) recorded on the hard disk or the memory card is read out and output to the image processing unit 45 under the control of the recording medium playback unit 44 and the control unit 21.
The image processing unit 45 decodes the input image data and outputs it to the display unit 43 as an image signal.

Next, the operation of the in-vehicle acoustic system of the embodiment will be described.
FIG. 4 is a processing flowchart of the embodiment.
First, the control unit 21 of the in-vehicle audio visual apparatus 11 acquires reproduction related time information when a wireless connection is established with the portable player 13 via the wireless network 12 or when a reproduction target (reproduced music or reproduced image) changes. (Step S1). Here, when the playback target is changed, when the playback song or playback image is changed (including those by user operation and automatic continuous playback operation), when fast forward or fast reverse is performed, the pause is For example, when it is released.

More specifically, the control unit 21 inquires of the portable player 13 about reproduction related information in a predetermined procedure, and the portable player 13 reproduces from now on via the wireless communication unit 47. First playback time data corresponding to the elapsed playback time of a song or image is transmitted.
Hereinafter, a specific example will be described.
FIG. 5 is an operation explanatory diagram in the initial state.
If the playback elapsed time of the current playback song is 2 minutes 32 seconds as shown in FIG. 5, the portable player 13 uses the first playback time data corresponding to the playback elapsed time “02:32”. Is transmitted in a predetermined format.

FIG. 6 is an explanatory diagram of an example of the data format of the first reproduction time data.
The first reproduction time data 60 includes a header part 61 including a transmission destination address and a transmission source address, a data type part 62 representing data contents, and a data part 63 in which actual first reproduction time data is stored. ing.
Subsequently, the control unit 21 of the in-vehicle audio visual apparatus 11 automatically updates and displays the reproduction time (play time) displayed on the display unit 23 every other second (step S2).
FIG. 7 is an explanatory diagram of operations during automatic updating.
When 1 second has elapsed from the playback elapsed time “02:32” received in step S1, the control unit 21 updates the playback elapsed time by itself according to a reference clock such as an internal timer, and displays it on the display unit 23. The time (play time) is “02:33”.

In parallel with this, the portable player 13 independently updates the elapsed playback time to “02:33”.
Next, the control unit 21 determines whether or not the reproduction time has been updated a predetermined number of times (in this embodiment, 10 times) (step S3).
If it is determined in step S3 that the reproduction time has not yet been updated a predetermined number of times (step S3; No), the control unit 21 proceeds to step S2 again and performs the same process.
If the reproduction time has been updated a predetermined number of times in the determination in step S3 (step S3; Yes), the control unit 21 requests the portable player 13 again to transmit reproduction-related time information according to a predetermined procedure ( Step S4).
Thereby, the portable player 13 transmits the first reproduction time data corresponding to the current reproduction time via the wireless communication unit 47.
As a result, the control unit 21 determines whether or not there is a difference between the elapsed playback time displayed on the display unit 23 and the elapsed playback time corresponding to the first playback time data. (Step S5).

If it is determined in step S5 that there is no deviation between the playback elapsed time displayed by the player and the playback elapsed time corresponding to the first playback time data (step S5; No), the process is performed. The process again proceeds to step S2, and the same processing is performed thereafter.
If it is determined in step S5 that there is a deviation between the reproduction elapsed time displayed by itself and the reproduction elapsed time corresponding to the first reproduction time data (step S5; Yes), the deviation. The amount is calculated (step S6).
More specifically, a difference ΔT between the reproduction elapsed time TD1 displayed on the portable player 13 and the reproduction elapsed time TD2 displayed on the display unit 23 of the in-vehicle audio visual apparatus 11 is calculated by the following equation.
ΔT = TD1-TD2
FIG. 8 is an explanatory diagram of an operation at the time of deviation correction.
Specifically, in the case shown in FIG. 8, based on the playback elapsed time TD1 = 9: 37 of the portable player 13 and the playback elapsed time TD2 = 9: 35 of the display unit of the in-vehicle audiovisual device 11. And
ΔT = 9: 37-9: 35
= 0: 02
Thus, the difference ΔT = 2 seconds is calculated.

Next, in order to correct the shift, the control unit 21 displays a display update every second as a display update every TN seconds shown in the following formula so that the correction is completed within the reproduction related information acquisition timing interval TP. The update time TN is calculated by the following equation.
TN = TP / (TP + ΔT)
Specifically, in the case of the above example, since the acquisition timing interval TP = 10 seconds,
TN = 10 / (10 + 2)
= 0.83 (seconds)
Therefore, the control unit 21 of the in-vehicle audio visual apparatus 11 controls the display unit 23 to update the display time in units of seconds every 0.83 seconds. That is, the display time of 1 second is updated every 0.83 seconds.
As a result, it can be seen that the elapsed playback time TD2 of the display unit of the in-vehicle audio visual apparatus 11 becomes equal to the elapsed playback time TD1 of the portable player 13 after the elapsed time TP has elapsed, and the deviation is corrected.

As described above, when there is a discrepancy, the discrepancy is gradually corrected until the next playback-related time information request timing. Time information can be corrected, and reproduction-related time information with little error can be displayed.
As described above, according to the present embodiment, it is possible to correct the elapsed playback time on the display unit 23 of the in-vehicle audio visual apparatus 11 without increasing the inquiry frequency and giving the user a sense of incongruity. It becomes.
Although the above description is about the elapsed playback time, the remaining playback time can be similarly corrected.

In the above description, the case where the control program for realizing the above functions is stored in the ROM in advance has been described. However, the control program may be recorded on a computer-readable recording medium. If it is such a structure, when a program will be read from a storage medium with a computer and a computer will perform a process according to the read program, the effect | action and effect equivalent to the vehicle-mounted acoustic system of the said embodiment are acquired.
Here, the storage medium is a semiconductor storage medium such as RAM or ROM, a magnetic storage type storage medium such as FD or HD, an optical reading type storage medium such as CD, CDV, LD, or DVD, or a magnetic storage type such as MO. / Optical reading type storage medium, and any storage medium can be used as long as it can be read by a computer regardless of electronic, magnetic, optical, etc. .
It is also possible to download, install, and execute a control program via a communication network such as the Internet or a LAN.

It is a block diagram which shows the main structures of the vehicle-mounted audio visual system. It is a general | schematic block diagram of a vehicle-mounted audio visual apparatus. It is a general | schematic block diagram of a portable player. It is a processing flowchart of an embodiment. It is operation | movement explanatory drawing in an initial state. It is explanatory drawing of an example of the data format of 1st reproduction time data. It is operation | movement explanatory drawing at the time of automatic update. It is operation | movement explanatory drawing at the time of deviation | shift correction | amendment. It is a block diagram which shows the main structures of a vehicle-mounted audio system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 In-vehicle audio visual system 11 In-vehicle audio visual apparatus 12 Wireless network 13 Portable player 21 Control part 22 Operation part 23 Display part 24 Image processing part 25 Recording medium reproduction part 26 Power amplifier part 27 Speaker unit 28 Wireless communication part 31 CPU
32 2 minutes 41 Control unit 42 Operation unit 43 Display unit 44 Recording medium playback unit 45 Image processing unit 46 Headphone amplifier unit 47 Wireless communication unit 51 CPU
52 ROM
53 RAM
60 First playback time data 61 Header part 62 Data type part 63 Data part

Claims (8)

An in-vehicle information reproducing apparatus connected to a portable information reproducing apparatus having a communication function via a communication network,
When information reproduction is performed in cooperation with the portable information reproducing device based on information reproduced by the portable information reproducing device, the portable information reproducing device intermittently performs predetermined intervals via the communication network. A playback related time information receiving unit for receiving playback related time information;
A playback time display unit for displaying the playback related time corresponding to the received playback related time information while updating it;
An in-vehicle information reproducing apparatus comprising: The in-vehicle information reproducing apparatus according to claim 1,
If the playback related time corresponding to the playback related time information received this time is different from the playback related time obtained by updating the playback related time corresponding to the previously received playback related time information, the next playback An in-vehicle information reproducing apparatus comprising: a display time correcting unit that displays the reproduction time on the reproduction time display unit while correcting the deviation to be equal to or less than a predetermined amount before receiving the related time information. In the in-vehicle information reproducing apparatus according to claim 1 or 2,
An in-vehicle information reproducing apparatus comprising: an information requesting unit that makes a transmission request for the reproduction related time information to the portable information reproducing apparatus at each predetermined timing. The in-vehicle information reproducing device according to any one of claims 1 to 3,
The in-vehicle information reproducing apparatus, wherein the reproduction related time is an elapsed reproduction time or a remaining reproduction time. A portable information reproducing apparatus connected to the in-vehicle information reproducing apparatus according to any one of claims 1 to 4 via the communication network,
A portable information reproducing apparatus comprising a reproduction-related time information transmitting unit that transmits reproduction-related information via the communication network. A portable information reproducing apparatus connected to the in-vehicle information reproducing apparatus according to claim 3 via the communication network,
A portable information reproducing apparatus comprising: a reproduction related time information transmitting unit that receives the transmission request received via the communication network and transmits reproduction related information via the communication network. A control method for an in-vehicle information reproducing apparatus for controlling an in-vehicle information reproducing apparatus connected to a portable information reproducing apparatus having a communication function via a communication network,
When information reproduction is performed in cooperation with the portable information reproducing device based on information reproduced by the portable information reproducing device, the portable information reproducing device intermittently performs predetermined intervals via the communication network. A playback-related time information receiving process for receiving playback-related time information in
A playback time display process in which the playback related time corresponding to the received playback related time information is updated and displayed;
A method for controlling an in-vehicle information reproducing apparatus, comprising: A control program for controlling an in-vehicle information reproducing apparatus for controlling an in-vehicle information reproducing apparatus connected via a communication network with a portable information reproducing apparatus having a communication function,
When information reproduction is performed in cooperation with the portable information reproducing device based on information reproduced by the portable information reproducing device, the portable information reproducing device intermittently performs predetermined intervals via the communication network. To receive playback-related time information,
Display the playback related time corresponding to the received playback related time information while updating it.
A control program characterized by that.

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