KR20050076930A - Method for save and recoding broadcasting in pda addition to dmb - Google Patents

Abstract

The present invention relates to a PDA, and more particularly, to a broadcast recording and storing method of a PDA supporting DMB. As described above, in the method of storing broadcast recording of a PDA supporting DMB according to the present invention, when the user notifies the PDA to start DMB recording, the PDA selects a storage space for recording contents. Checking whether synchronization with an external device is activated; if activated, transmitting a recording start message to the PDA external device to receive a confirmation message; encoding the recorded DMB data when receiving the confirmation message, Transmitting to the device, ending recording if there is no data to transmit.

Description

Method for save and recoding broadcasting in PDA addition to DMB}

The present invention relates to a PDA, and more particularly, to a broadcast recording and storing method of a PDA supporting DMB.

Recently, with the spread of PCs and notebook PCs, the development and use rate of personal digital assistants such as PDAs is increasing day by day.

Currently, PDA development is focused on the PDA function, which is faithful to the existing PIMS function, to support various multimedia, network access, and CDMA or digital satellite broadcasting (DMB) reception functions.

In particular, DMB is accelerating the development of DMB-enabled products that can receive multi-channel multimedia broadcasting anytime, anywhere.

If you first explain about DMB, the current radio broadcast is developed in analog form, originally intended for fixed reception, so that the sound quality deteriorates considerably when receiving while walking or driving a vehicle, and requires a high output and a wide frequency band.

In order to solve these problems, standardization and commercialization of digital audio broadcasting is underway worldwide.In Europe, which adopts Eureka-147 as the digital audio broadcasting standard, DAB (Digital Audio Broadcasting) in Europe and DAR (Digital Audio Radio) in the US In Canada, Digital Radio Broadcasting (DRB) and Digital Sound Broadcasting (DSB) are used in the International Telecommunication Union (ITU-R), and in Korea, they are used by the Ministry of Information and Communication as DMB (Digital Multimedia Broadcasting). have.

At this time, DAB developed for next-generation broadcasting is able to receive CD-level sound quality in a vehicle that runs at high speed even when transmitted at low power due to strong radio wave environment and noise in downtown. In addition, the concept of 'broadcasting broadcasting' is expanded to the concept of 'broadcasting broadcasting'. In addition to music broadcasting, various multimedia information such as news, traffic information, weather information, geographical location information, video information, etc. Can be transmitted graphically.

Meanwhile, DMB, or digital multimedia broadcasting, named by the Ministry of Information and Communication of Korea, is digitalizing voice broadcasting, and it is 1.5Mbit / s data of high quality CD quality, text, graphics, and moving picture beyond AM and FM radio type. It is the next generation broadcasting that provides various data services that can be transmitted, bidirectionality, and excellent mobile reception quality.

The above-described DMB can be broadly classified into terrestrial DMB and satellite DMB according to the characteristics of a medium, which is a transmission means, and can be divided into fixed service and mobile service in the case of satellite DMB broadcasting.

The characteristics of the DMB are described below by the contents of the European Broadcasting Union (EBU) and ITU-R.

(1) DMB broadcasting should be a digital transmission system that guarantees high quality, and should be continuously acceptable for the next 50 years, and provide high quality sound of 2 channels or more.

(2) It should be able to receive without obstacles in portable and running cars. In other words, mobile, portable and fixed batch reception should be available.

(3) A data channel (PAD: Program Associated Data) that transmits additional information to a regular program or a data channel (NPAD: NonPAD) service as an independent program should be available. In other words, radio, text information and program recognition should be available.

(4) A system with high transmission capacity and transmission efficiency, such as accommodating different data channel capacity and increasing frequency utilization efficiency.

Accordingly, DMB receivers for receiving DMB broadcasts are also in commercialization stage, and products that are embedded in portable devices such as PDAs have been released.

When PDA products equipped with such DMB reception functions are released, PDA stores digital broadcasting video and audio in the form of a file through encoding, and the PDA does not have a large memory space. There is a problem that the recordable time is reduced by the program installation and the number or size of pre-stored files.

Accordingly, an object of the present invention has been made in view of the above-mentioned problems of the prior art, and DMB is intended to overcome the limitations of the shortage of storage space for broadcast recording files that may occur when a recording function is implemented in a PDA equipped with a DMB reception function. To provide a broadcast recording storage method of the PDA supporting the.

       According to an aspect of the present invention for achieving the above object, when the user informs the PDA to start the DMB recording, the PDA selects the storage space of the recording content, if the selected storage space is an external PDA device, external PDA Checking whether synchronization with a device is activated; if enabled, transmitting a recording start message to the PDA external device to receive a confirmation message; encoding the recorded DMB data when the confirmation message is received; The step of transmitting to, if there is no data to be transmitted comprises the step of ending the recording.

Preferably, when the selected storage space is inside the PDA, the recordable time is displayed according to the remaining free space.

Preferably, the PDA external device is a PC.

Preferably, synchronization with the PDA external device is activated and indicates a recordable time through the PDA external device.

Preferably, when the DMB data transmitted to the PDA external device is received, the PDA external device stores the received data in a file.

Preferably, the recording and storage of the DMB data is in real time.

Hereinafter, a configuration and an operation according to an exemplary embodiment of the present invention will be described with reference to the accompanying drawings.

First of all, the PDA of the present invention is activated with synchronization with a PC via USB or a network, and can receive and record DMB from the PDA, transmit the recording contents from the PDA to the client application, and the server application of the PC records the recording contents. Receive and save.

1 is a flowchart illustrating a broadcast recording and storing method of a PDA supporting DMB according to the present invention.

 Referring to FIG. 1, the broadcast recording and storing method of a PDA supporting another DMB according to the present invention selects where to store the contents recorded by the DMB application when the DMB recording is initiated while the PDA is initialized. (S11).

If the selected storage space is inside the PDA, the recordable time is displayed according to the free space of the PDA memory, and if the outside of the PDA is a PC, it is checked whether synchronization with the PC is activated (S12 to S13).

If the confirmation result (S13), if activated, the recording start message is transmitted to the PC application to receive the confirmation message (S14).

When the DMB broadcast recording is received by receiving the confirmation message, the PDA encodes video and audio data to generate a packet, and the packet is continuously transmitted to the PC application through the recording content transmission client application.

The PC application then receives the encoded packet and stores it in a file.

After the above process is completed, when the recording is finished, the PDA application transmits a stop message to the PC application to receive the fine message (S16), and ends the DMB broadcast recording.

The DMB broadcast is recorded and stored in real time, and there is no retransmission of the packet.

As described above, the present invention has the effect of solving the problem of shortening the recording time due to lack of storage space that may occur during the implementation of the broadcast recording function to support when the PDA has a DMB reception function.

In addition, PDAs as well as products such as WEBPED and Tablet PCs have the effect of overcoming the recording time limit that can often occur when DMB reception function is required or when broadcast recording is required in DMB reception on a mobile phone.

Furthermore, it is effective to extend the shooting time in the camcorder function implementation which is not only supported by DMB but also by personal portable terminal products.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the spirit of the present invention.

Therefore, the technical scope of the present invention should not be limited to the contents described in the examples, but should be defined by the claims.

1 is a flowchart illustrating a broadcast recording storage method of a PDA supporting DMB according to the present invention.

Claims (6)

       When the user notifies the PDA of the start of the DMB recording, the PDA selecting a storage space of the recording contents; If the selected storage space is a PDA external device, checking whether synchronization with the PDA external device is activated; Receiving the confirmation message by transmitting a recording start message to the PDA external device, if the activation is activated; Encoding the recorded DMB data when the confirmation message is received and transmitting the encoded DMB data to the external device of the PDA; And storing the broadcast recording of the PDA, wherein the recording is terminated if there is no data to be transmitted. The method of claim 1, If the selected storage space is inside the PDA, broadcast recording storage method of the PDA supporting the DMB, characterized in that the recordable time is displayed according to the remaining free space. The method of claim 1, The PDA external device is a broadcast recording storage method of the PDA supporting the DMB, characterized in that the PC.  The method of claim 1, The synchronization recording with the PDA external device is activated, the broadcast recording storage method of the PDA supporting the DMB, characterized in that for displaying the recordable time through the PDA external device. The method of claim 1, When the DMB data transmitted to the PDA external device is received, the PDA external device stores the received data as a file broadcast recording storage method of the PDA supporting the DMB. And recording and storing the DMB data in real time.