JP2007019884A - Method of dc download for wireless digital content and its device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of DC download for wireless digital contents which can perform wireless direct current downloading and immediately reproduce digital content with a very small memory, and to provide its device. <P>SOLUTION: The method and its device include a processor 30 having a judging circuit module for controlling DC download, and stored and output digital content packet switching, further have an output unit for performing AV output, a wireless communication module 32 connected to a network and a memory unit for storing content, download digital content by a server connected to the Internet by a direct current downloading system with a small memory capacity and immediately perform continuous AV reproduction, determine whether to turn on/off the wireless communication module by a device for detecting memory data storage capacity and attain power saving and memory saving cost. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a method and apparatus for DC download of wireless digital content, and more particularly, to a method for DC download of digital content by a wireless LAN and an apparatus for implementing the method.

  By storing digital sound files in a storage device such as a built-in flash memory or hard disk in an ordinary portable digital AV device such as an MP3 player, users can always enjoy video and music. it can.

  For the method of downloading video, audio and music, reference can be made to the instant multimedia device and the DC download method disclosed in U.S. Pat.No. 6,085,252 (Device, System and Method for Real-Multimedia Streaming). After receiving network packet switching, through the packet switching process and packet switching loss and error evaluation, smooth transmission objectives can be achieved by new means of transmission and flow quality control (QoS). Play by player.

  U.S. Pat.No. 6,665,772 discloses a method for storing data in a DC or non-DC manner, comprising the steps of organizing memory addresses and two logical sequences that access the direction of the memory addresses. ) Includes a step of storing DC or DC data and a step of newly allocating memory addresses.

  How to identify the packet switching identity of different sources by sequence number or timestamp as described in US Pat. No. 6,263,371 (Method and Apparatus for Seaming of Streaming Content) By doing so, it is disclosed to achieve the purpose of instantly downloading content. In addition, by providing a proxy module in the DC download device, the dropped packet switching is detected and switched by packet switching of another download source, and the gap between download data is the largest. Reduce small.

  Although network packet switching processing and DC download technology are known from the prior art, and wireless communication systems are self-evident, the portable digital sound device provided in the prior art is required for its storage capacity. And the digital content file used are closely related and become the most important source of cost for this device. However, its power supply should be the biggest problem of conventional portable digital sound devices, for example, when downloading content over a wireless LAN, the wireless communication module becomes the main cause of its largest power consumption, Driving the power required by the hard disk drive is also a major factor in the power consumption of conventional devices.

  The present invention provides a new method and apparatus for DC download of wireless digital content, as the conventional technology has drawbacks with respect to data download and power consumption.

  The method and apparatus for DC download of wireless digital content uses a small storage capacity, downloads digital content from a server connected to the Internet, and performs immediate AV playback using a DC download method. This device can save the data downloaded by the user in the external storage device, or does not abandon the data after listening or watching it, but does not affect the immediate continuous AV playback, and the memory data storage capacity In order to achieve the purpose of power saving and memory saving, it is determined whether to turn on or off the wireless communication module.

  A DC download apparatus for wireless digital content according to an embodiment of the present invention includes a processor having a referee circuit module for controlling DC download, storage and output digital content packet switching, and an output of a video signal and an audio signal, An output unit that is electrically connected to the processor, a wireless communication module that is connected to a wireless LAN and DC downloads the digital content packet switching, and is electrically connected to the processor, and a register memory that stores the DC downloaded digital content packet switching And a memory unit that is electrically connected to the processor and an input unit that is electrically connected to the processor and for inputting an operation command.

  This memory unit supplies a small register memory, stores the downloaded digital content packet switching in the register memory, and is immediately played back and consumed. In the embodiment, the memory data storage capacity of this memory unit from the processor By detecting the state, it is determined whether to turn this wireless communication module on or off, and the power consumption of the wireless digital content DC download device can be saved.

  A method for DC download of wireless digital content according to the present invention is used in a DC download apparatus for wireless digital content, and the apparatus is activated in the DC download method for wireless digital content in which DC download is performed by one or a plurality of servers supplying digital content. After that, the network connection status and memory data storage capacity are detected, the connection by the wireless LAN is activated, the data is wirelessly DC downloaded, the data is stored in the register memory, and the data is further extracted by the FIFO. Therefore, after decoding, the data is immediately output to the output unit, and when the data is downloaded, it is always determined whether or not to continue to download the data by wireless DC, that is, the memory data is stored. Detects whether the network connection is turned on or off by detecting the amount status, and when the register memory capacity reaches or exceeds the set upper limit, the network connection is turned off and downloaded. Is temporarily stopped, and when the capacity is consumed up to the lower limit of the setting, the network connection is turned on and downloaded, thereby achieving the power saving purpose of the wireless digital content DC download device.

The present invention provides a method and apparatus for direct download of wireless digital content in order to provide a device that also serves the purpose of reducing memory consumption, immediate AV transmission, mobile AV, and copyright protection, and has the following features. .
(1) Use less register memory,
(2) Wireless (or wired) DC download method downloads digital content from a server connected to the Internet, including wireless communication protocols such as WiFi (IEEE802.11x), WiMAX (IEEE802.16x), Although GPRS etc. and a wired connection system, for example, ADSL, Cable Modem etc. are included, it is not restricted to these embodiments.
(3) Immediate continuous AV playback occurs.
(4) This device can save the data downloaded by the user in the external (external) storage device, or does not abandon the data after playback, and does not save the data. You can enjoy mobile AV information by direct DC download means, and also serve the purpose of copyright protection.
(5) The device for detecting the memory data storage capacity state can determine whether the wireless communication module is turned on or off, and can achieve the purpose of saving power and saving the memory cost. Includes a power saving mode or sleep mode, stops downloading digital content, and activates the wireless communication module to operate the wireless communication module normally. ) To return to the state and start downloading the digital content, the power consumption returns to the normal working power consumption.

  FIG. 1 is a diagram showing an embodiment for connecting a wireless digital content direct-current download apparatus and its Internet according to the present invention. In FIG. 1, there are servers 12a, 12b, and 12c connected to the Internet 10, and the digital content is not limited to being supplied from a single server, but the Internet transmission capability, data processing capability (throughput) or service. Servers 12a, 12b, and 12c that connect a plurality of Internets 10 are provided for redundancy (service redundancy), etc., and digital AV contents downloaded from the user with the portable AV devices 100 and 100 ', and the database 14a of each server, Digital content stored in 14b, 14c, etc., for example, provides music downloads in music packet formats such as MP3, and also includes music files in packet formats such as OGM, WMA, WAV, AAC, and more, eg, MPEG film files , Ebooks, pictures, news, game software, and more. The portable AV devices 100 and 100 'are connected to the Internet 10 in a wireless or wired manner. See FIG. 2 for an embodiment thereof.

  As shown in FIG. 2, the portable AV device 100 includes a portable AV device 100 and a pedestal 20 that can be expanded (expanded) and connected to a power source. The portable AV device 100 includes at least a film, an image, or an interactive menu ( The display 21 that displays the interactive menu), an internal antenna that is not exposed for appearance design, and the antenna 22 that is connected to the wireless LAN and a plurality of buttons, or touch buttons and voice input, etc. The communication port 29 is provided in the device 100, and this communication port 29 may be a communication port of the USB interface. By connecting to the personal computer, the purpose of data update and transmission can be achieved. The communication port 29 may be connected to a wired LAN port with an appropriate interface in an environment where there is no wireless network. To achieve the purpose of connecting to click. The first audio signal output interface 24 can be connected to the earphone or externally connected to the sound equipment.

  The portable AV device 100 is further connected to the pedestal 20 via a connection interface, and a preferred embodiment of the pedestal 20 can provide a second audio signal output interface 26 for playing digital content with earphones or circumscribed sound. Further includes a wired LAN port 27 such as RJ45, and even in an environment without a wireless network, the wired LAN port 27 can be connected to the network, and the power supply port 28 supplies external AC or DC to the apparatus 100 for charging. Furthermore, the pedestal 20 can be provided with a control interface 25 and can provide a remote control function using a remote control (not shown) by a transmission protocol such as wireless, infrared (IrDA), or bluetooth (registered trademark). .

  FIG. 3 is a block diagram of each functional unit in the embodiment of the portable AV apparatus 100. The apparatus 100 mainly performs processing such as (1) signal input / output, DC download flow rate restriction, memory address, and the like. A processor 30; (2) an output unit 31 electrically connected to the processor 30; (3) a wireless communication module 32 and a memory unit 33 electrically connected to the processor 30; and (4) for inputting an operation command. An input unit 34 that is electrically connected to the processor 30 of the present invention, and (5) a portable AV device of the present invention connected to an external storage medium (for example, a flash memory, an external hard disk, an optical disk, a memory card, etc.) containing digital content. The external storage device interface 36 that plays the digital content in it by 100 and electrically connects to the processor 30, and other preferred In another embodiment, the direct-current download device for wireless digital content provided by the present invention, excluding the direct-current download, can further store digital content downloaded from the user via the external storage device interface in the external storage medium. The digital content supplier can decide whether or not to store the digital content downloaded from the user on the external storage medium via the external storage device interface according to the download strategy. (6) Transmission interface such as USB, IEEE1394 It connects to a personal computer system (not shown), performs data transmission and charging to the device 100, and in an environment where there is no wireless network, it can be connected to a wired LAN port with an appropriate interface. Communication unit 37.

  The processor 30 comprises an umpire (judgment) circuit module (not shown) for controlling DC download, storage and output digital content packet switching to ensure seamless playback of the data. And the decoding unit 301, the control unit 302 is electrically connected to the memory unit 33, and the decoding unit 301 is electrically connected to the output unit 31. The digital content is downloaded from the digital content server that is activated and connected to the Internet, stored in the register of the memory unit 33 via the control unit 302, and immediately decoded via the decode unit 301 before being output to the output unit 31. To do.

  The memory unit 33 includes a first memory unit 331 which is a flash memory or a DRAM (Dynamic Random Access Memory). The first memory unit 331 provides a small amount of register storage space, and downloads digital contents. Is stored in the first memory unit 331, and is immediately reproduced according to the actual situation. Achieved the purpose of seamless DC download with the least memory and instant AV content service, the processor 30 includes the memory addressing capability of the memory unit, different data storage capacity in the memory The data is divided into blocks, an index is set, and upper and lower limits of data storage capacity and corresponding addresses are set.

  The control unit 302 includes memory data storage capacity detection means such as a memory data storage capacity detection module (not shown) made of software or hardware, and always detects the data storage capacity state of the first memory unit 331. When the capacity reaches or exceeds the upper limit of the setting, the control unit 302 turns off the wireless communication module 32, at which time the wireless communication module in the off state refers to the power saving mode or the sleep mode, and the digital content. Can stop downloading, save power consumption, turn on the wireless communication module 32 when the capacity is consumed to the lower limit of the setting, and start the wireless communication module at this time, this wireless communication module Will return to its normal working state and start downloading digital content The power consumption returns to normal working power consumption. The processor continuously detects the memory data storage capacity by the processor, determines whether the upper and lower limits of the set memory data storage capacity are reached, and decides to turn off or turn on the wireless communication module 32. Achieve 32 power saving objectives. The second memory unit 332 in the memory unit 33 is a ROM (Read Only Memory) or an SRAM, etc., and an internal work system (OS) of the DC download device for wireless digital contents of the present invention and its peripheral drive program Can be downloaded.

  When the digital content is extracted from the memory unit 33, the video portion is decoded via the video communication (output) interface 311 of the output unit 31 after the packetized AV file is decoded via the decoder unit 301 of the processor 30. For example, it outputs to the liquid crystal display in the apparatus 100, and the audio part is output to the audio communication unit 314 via the audio communication (output) interface 312 and can be listened to with an earphone or the like.

  Further, the external storage device interface 36 provided in the present embodiment reproduces digital contents in the external storage medium by connecting the external storage medium to the portable AV device 100 of the present invention, and stores the digital content stored in the external storage medium. The content can be output to the output unit 31 after being decoded through the decoder unit 301 of the processor 30.

  FIG. 4 is a block diagram in which the portable AV apparatus 100 is connected to the expansion (expansion) base 20 via the expansion (expansion) interface 41. The base 20 includes at least an expansion interface 41 connected to the apparatus 100, and charging. A battery or an external power source (AC / DC), a power supply unit 42 for supplying power or charging power to the apparatus 100, an infrared long distance control interface, a bluetooth (registered trademark) long distance control interface, or a wireless long distance A control interface 44 for controlling a long distance, a network interface 45 connected to the network by a wired LAN in an environment without a wireless network, and a communication interface (for example, USB) connected to a personal computer system (not shown) , IEEE1394, etc.) 43.

  Referring to the preferred embodiment shown in FIG. 5, the method for DC download of wireless digital content according to the present invention is a DC download method used in a DC download apparatus for wireless digital content. The download process includes the following steps. First, the apparatus is activated (step S501), and the processing flow inside the DC download apparatus for wireless digital content detects the connection state of the network and the storage capacity of the memory data in the memory unit (step S503), and then uses the wireless LAN. The connection is activated, that is, the wireless communication module of this apparatus is activated (step S505), and the data is wirelessly DC downloaded after the activation (step S507).

  After the DC download, the data is stored in a register memory which is a flash memory or DRAM (step S509), and further, the data is taken out from the register memory by FIFO (First-In First-Out) (step S511), that is, First, the data stored in the memory is used and consumed first, and after decoding, the data is immediately output to the output unit 31 (step S513), and the user can enjoy immediate digital content. At the same time, the processor in the apparatus detects the data storage state in the memory unit (step S515), determines whether to download data according to the usage status of the memory data storage capacity (step S517), and the memory data storage capacity is If it falls below the lower limit of the setting, it means that the amount of data will be used up soon, further downloading is necessary, proceed to step S521, determine whether the wireless communication module is activated, and then the wireless communication module Is started, step S507 and subsequent steps are performed. At that time, if the wireless communication module is turned off, the flow of steps S505 to S515 (starting of wireless communication module, DC download, temporary storage of file, AV output and memo immediately after data extraction and decoding If the memory data storage capacity reaches or exceeds the upper limit of the setting, this means that the data volume is sufficient and the device can output the data continuously, and there is no need to download the data. The connection in the LAN is turned off, that is, the wireless communication module of the device is turned off (step S519). At the same time, the data extraction, decoding, and output processes such as step S511 and step S513, and the memory unit of step S515 It is possible to perform processes such as continuously detecting the data storage state in the storage.

  The above-described embodiment is a preferred embodiment of the method and apparatus for DC download of wireless digital content according to the present invention, and can achieve the purpose of wireless DC download and instant playback of digital content with very little memory.

  The above attached drawings are used for reference and explanation only, and do not limit the present invention.

  As described above, the present invention certainly has a high practical value, and has industrial applicability, novelty and inventive step.

  However, the specific configurations disclosed above are merely possible embodiments of the present invention and do not limit the features of the present invention. While homes can make appropriate alterations and modifications within the field of the invention, it goes without saying that their implementation falls within the scope of the claimed invention.

It is a figure which shows the direct current download of the wireless digital content based on this invention. 1 is a diagram showing a DC download apparatus for wireless digital content according to the present invention. FIG. FIG. 3 is a block diagram of a circuit of a wireless digital content DC download apparatus according to the present invention. 1 is a block diagram of a wireless digital content direct-current download device and its pedestal circuit according to the present invention; FIG. 3 is a flowchart of a method for DC download of wireless digital content according to the present invention.

Explanation of symbols

10 Internet
12a, 12b, 12c servers
14a, 14b, 14c database
20 pedestal
21 display
22 Antenna
23 Input interface
24 First audio signal output interface
25 Control interface
26 Second audio signal output interface
27 Wired LAN port
28 Power port
29 Communication port
30 processor
31 Output unit
32 Wireless communication module
33 Memory unit
34 Input unit
36 External storage interface
37 Communication unit
41 Enlarged interface
42 Power supply unit
43 Communication interface
44 Control interface
45 Network interface
46 Communication interface
100, 100 'portable AV equipment
301 decoding unit
302 Control unit
311 Video communication interface
312 Voice communication interface
313 display unit
314 Voice communication unit
331 First memory unit
332 Second memory unit

Claims (25)

A processor including an umpire circuit module for controlling DC download, storage and output digital content packet switching;
An output unit that includes video and audio output and is electrically connected to the processor;
A wireless communication module that connects to a wireless LAN, downloads digital content packet switching in direct current, and electrically connects to the processor;
A memory unit including a register memory for storing DC downloaded digital content packet switching and electrically connected to the processor;
An input unit for inputting operation instructions and electrically connecting to the processor;
A communication unit that is electrically connected to the processor, performs data transmission and charging of the DC download device for wireless digital content, and further connects to a network;
The memory unit provides a small amount of register memory, stores downloaded digital content packet switching in the register memory, and immediately reproduces and consumes the digital content packet switching by using a FIFO. .   2. The wireless digital content direct-current download device according to claim 1, further comprising an external storage device interface for connecting the external storage medium to the wireless digital content direct-current download device.   3. The wireless digital content DC download apparatus according to claim 2, wherein after the DC download of the digital content is performed, the digital content is stored in an external storage medium via an external storage device interface.   The apparatus of claim 1, wherein the processor includes a control unit electrically connected to the memory unit and the wireless communication module.   The processor detects the data storage capacity status of the memory unit, and when the data storage capacity reaches or exceeds the upper limit of setting, it turns off the wireless communication module and temporarily stops downloading, and the capacity is consumed to the lower limit of setting. 5. The apparatus according to claim 4, further comprising a memory data storage capacity detection module that turns on and downloads the wireless communication module when the wireless communication module is turned on.   The apparatus of claim 1, wherein the processor includes a decoder unit electrically connected to the output unit.   The apparatus of claim 1, wherein the memory unit further includes a ROM.   2. The apparatus of claim 1, wherein the memory unit includes a flash memory for storing data.   2. The DC download apparatus for wireless digital contents according to claim 1, wherein the memory unit includes a DRAM for storing data.   2. The DC download apparatus for wireless digital content according to claim 1, wherein the output unit further includes a display unit connected via a video communication interface and an audio communication unit connected via an audio communication interface. In addition, a pedestal is connected, connected to the DC download device for wireless digital content from the expansion interface of the pedestal,
The pedestal is
A power supply unit that is electrically connected to the expansion interface and supplies power to the DC download device for wireless digital content;
A control interface for electrically connecting to the expansion interface and controlling a long distance;
2. The wireless digital content DC download device according to claim 1, further comprising a network interface electrically connected to the expansion interface and providing a network connection to the wireless digital content DC download device.   12. The wireless digital content direct current download apparatus according to claim 11, further comprising a communication interface for connecting to a personal computer system.   13. The wireless digital content DC download apparatus according to claim 12, wherein the communication interface is a USB communication port.   12. The wireless digital content direct current download apparatus according to claim 11, wherein the power supply unit is a rechargeable battery.   12. The wireless digital content direct current download apparatus according to claim 11, wherein the power supply unit is an external power supply.   The apparatus of claim 11, wherein the control interface is an infrared long-distance control interface.   The apparatus of claim 11, wherein the control interface is a Bluetooth® long-distance control interface.   12. The apparatus of claim 11, wherein the control interface is a wireless long-distance control interface. In a DC download method for wireless digital content used in a DC download device for wireless digital content, the DC download is performed by one or more servers supplying digital content.
Detecting the network connection status;
Detecting memory data storage capacity;
Starting a connection via a wireless LAN;
A step of wireless DC download of data;
Storing data in a register memory;
Retrieving data by FIFO;
Outputting data after decoding; and
Determining whether to continue to download the data by wireless direct current; and
Turning off the network connection,
Achieving the purpose of using very little memory by the DC download method,
In addition, by detecting the memory data storage capacity state, it is determined whether to turn on or off the network connection. When the capacity reaches or exceeds the upper limit of the setting, the network connection is turned off to temporarily download. Wireless digital content that achieves the power saving purpose of the DC download device for wireless digital content by turning on the network connection and downloading when the capacity is consumed up to the lower limit of the setting DC download method for content.   20. The method for DC download of wireless digital content according to claim 19, wherein the memory data storage capacity of the memory unit of the DC download device for wireless digital content is detected.   The method according to claim 20, wherein the memory unit includes a flash memory or a DRAM.   20. The wireless digital content according to claim 19, wherein the step of turning on or off the wireless network connection is a step of turning on or off a wireless communication module of the wireless digital content direct-current download device. DC download method.   23. The method of direct download of wireless digital content according to claim 22, wherein the step of turning off the wireless communication module includes entering a power saving mode.   23. The method of direct download of wireless digital content according to claim 22, wherein the step of turning off the wireless communication module includes entering a sleep mode.   The step of determining whether or not to download the data by wireless direct current determines whether or not the wireless network connection is activated when the data needs to be downloaded. The wireless digital content direct current according to claim 19, wherein if the wireless network connection is not activated, the wireless network content is downloaded after the wireless network connection is activated first, and if the wireless network connection is activated, the wireless network content is downloaded as it is. How to download.

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