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Digital video broadcasting-handheld receiver and receiving methodDigital video broadcasting-handheld receiver and receiving method description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20080101397, Digital video broadcasting-handheld receiver and receiving method. Brief Patent Description - Full Patent Description - Patent Application Claims
BACKGROUND OF THE INVENTION [0001]1. Technical Field [0002]The present disclosure relates to a digital video broadcasting-handheld (DVB-H) receiver, and more particularly, to a DVB-H receiver that can receive multiple services with the addition of only a minimum memory capacity, and a receiving method for the same. [0003]2. Discussion of the Related Art [0004]In DVB-T (Digital Video Broadcasting-Terrestrial), which is a European consortium standard for the broadcast transmission of digital terrestrial televisions broadcast data including video images and audio data is broadcast using orthogonal frequency division multiplexing (OFDM). [0005]In addition, as portable devices, such as mobile phones, PDA, etc, are rapidly becoming popular, the desire to watch TV using a portable device is increasing. Since DVB-T was developed for a TV; receiving digital broadcasts, however, DVB-T is not suitable to be applied to portable devices. Thus, a new method suitable for watching TV broadcasts using a portable device is required. [0006]DVB-H (Digital Video Broadcasting-Handheld), which was suggested in response to the above requirement, was developed based on the DVB-T standard. Accordingly, the DVB-T standard is aimed at multi-channel or high-definition (HD) services, while the DVB-H standard is aimed at providing standard definition (SD) moving images of 2 Mbps or less to allow a user moving at high speeds to view clear moving images. [0007]The DVB-H standard uses a time-division method and an internet protocol (IP) datagram transmission method in which information is transmitted as packets according to the Internet Protocol (IP). A protocol architecture in the DVB-H standard includes a physical layer, a data link layer, and a network layer. The data link layer includes a multi protocol encapsulation (MPE) portion including an IP datagram or a multi protocol encapsulation-forward error correction (MPE-FEC) portion that performs error-correction coding. [0008]According to the DVB-H standard, the MPE portion is batch transmitted as a frame using a time-slice method and a delta-T method, and data is transmitted in bursts. Hereinafter, a method of transmitting data in bursts using a time-slice method and a delta-T method will be described. [0009]In the time-slice method, data streams for a single service are transmitted in bursts in a time domain. In particular, a time domain is divided into specific time intervals, and IP data in each time interval is transmitted in a burst of data. Here, the time between bursts is referred to as "Off-Time", and the duration of each time interval is denoted as "Delta-T". [0010]FIG. 1 is a diagram for explaining burst parameters according to the DVB-H standard. Referring to FIG. 1, burst parameters in the DVB-H standard include a burst size, a burst bit rate, and a burst duration. According to the DVB-H standard, a maximum burst size of data is 2 Mbit, and the burst bit rate or burst duration can be dynamically varied. In FIG. 1, Delta-T is the sum of the burst duration and the Off-Time. [0011]Service providers can arbitrarily select burst parameters. In the DVB-H standard, a maximum burst bit rate is expected to be 16 Mbps. For references a maximum bit rate in the DVB-T standard is 32 Mbps. [0012]In a data link layer according to the DVB-H standard, MPE-FEC is performed on data transmitted in bursts in Delta-T intervals during the Off-time, and the MPE-FEC data is transmitted to an upper layer. Here, IP data (or IP packets) included in the received data is stored in an MPE buffer of a DVB-H receiver. [0013]In a service scheme according to the DVB-H standard, data is transmitted as an elementary stream (ES), which is a kind of burst. When a single service that is, a single ES, is received under the DVB-H standard, the received data can be sufficiently processed during the Off-Time and then transmitted to an upper layer. For an application, such as play and record, however, at least two services should be received, that is, there are multiple services. In this case, a problem may arise depending on the capacity of the MPE buffer of the DVB-H receiver. [0014]FIG. 2 is a diagram for explaining a problem that may arise when at least two services are received. The case detailed in FIG. 2 is a worst-case scenario. Referring to FIG. 2, different elementary streams ES1 and ES2 are consecutively received, which is the worse case in regard to hardware. [0015]More particularly, before the first received burst of data ES1 has been processed, the next burst of data ES2 is received. In this case, if the capacity of the MPE buffer is not sufficient, the burst of data that is first received and stored in the MPE buffer may overlap with the burst of data that is received later by the MPE buffer. [0016]To prevent this situation from arising, a method of using a large-capacity memory installed outside a receiver chip as the MPE buffer can be considered. This method is advantageous to provide multiple services, however, but it increases the components of a final product and circuit layout factors and restrictions thereof are also involved. [0017]Alternatively, a method of sharing a memory installed in an application processor (AP) can be considered. This method is advantageous in consideration of form factors of a final product. The method leads, however, to complicated hardware architecture and increases the number of pins of the receiver chip. Thus, this method is not an ideal solution to this problem of receiving two services. [0018]Therefore, there is a need for an on-chip MPE buffer that is integrated with a receiver chip, that has a minimal memory capacity, that is small enough to reduce the size of the receiver chip, and that allows the receiver chip to receive multiple services without an external component. SUMMARY OF THE INVENTION [0019]Exemplary embodiments of the present invention provide a DVB-H receiver that can receive multiple services with the addition of a minimum of memory capacity. [0020]Exemplary embodiments of the present invention also provide a receiving method using DVB-H receiver in which multiple services can be received with the addition of a minimum of memory capacity. [0021]According to an exemplary embodiment of the present invention, there is provided a receiver comprising a buffer unit, an error correction unit, an access unit, and a buffer arbitration unit. The buffer unit includes a plurality of memory regions and stores data in a first format of consecutively received burst data. The error correction unit performs error correction on the data in the first format. The access unit accesses the buffer unit to allow writing the data. In the first format of the burst data. The buffer arbitration unit arbitrates access requests to the buffer unit. The access unit allows the data in the first format to be stored in the buffer unit through a dedicated access path. [0022]The access unit may allow all the data in the first format of current burst data to be stored in predetermined memory regions of the buffer unit and some data in the first format of next burst data to be stored in the remaining memory regions of the buffer unit. Continue reading about Digital video broadcasting-handheld receiver and receiving method... Full patent description for Digital video broadcasting-handheld receiver and receiving method Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Digital video broadcasting-handheld receiver and receiving method patent application. Patent Applications in related categories: 20090290592 - Ring buffer operation method and switching device - A buffer operation method, for use with a buffer organized as a plurality of sections, two or more continuous ones of the sections being defined as a monitor block, the method including: receiving a data packet and dividing the same into a plurality of divisions; storing the divisions in a ... ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. 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