WO2007052103A1 - Appareil, procede et produit de programme informatique permettant de synchroniser une operation de carte memoire pendant une reception dvb-h - Google Patents

Appareil, procede et produit de programme informatique permettant de synchroniser une operation de carte memoire pendant une reception dvb-h Download PDF

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Publication number
WO2007052103A1
WO2007052103A1 PCT/IB2006/002953 IB2006002953W WO2007052103A1 WO 2007052103 A1 WO2007052103 A1 WO 2007052103A1 IB 2006002953 W IB2006002953 W IB 2006002953W WO 2007052103 A1 WO2007052103 A1 WO 2007052103A1
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WO
WIPO (PCT)
Prior art keywords
receiving
memory card
bursty
receiver
processor
Prior art date
Application number
PCT/IB2006/002953
Other languages
English (en)
Inventor
Olli Turtinen
Original Assignee
Nokia Corporation
Nokia, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nokia Corporation, Nokia, Inc. filed Critical Nokia Corporation
Priority to EP06809090A priority Critical patent/EP1946545A4/fr
Publication of WO2007052103A1 publication Critical patent/WO2007052103A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/3805—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving with built-in auxiliary receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/27—Arrangements for recording or accumulating broadcast information or broadcast-related information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
    • H04N21/41407—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/418—External card to be used in combination with the client device, e.g. for conditional access
    • H04N21/4184—External card to be used in combination with the client device, e.g. for conditional access providing storage capabilities, e.g. memory stick
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
    • H04N21/4305—Synchronising client clock from received content stream, e.g. locking decoder clock with encoder clock, extraction of the PCR packets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/443—OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
    • H04N21/4435—Memory management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/643—Communication protocols
    • H04N21/64315—DVB-H
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the exemplary and non-limiting embodiments of this invention relate generally to wireless communication systems and, more specifically, relate to user equipment or, more generally, user terminals capable of receiving wireless communications signals having a potential to interfere with operation of electronic circuitry of the user terminal.
  • DVB-H standard was derived from DVB-T (terrestrial), allowing for lower power consumption, lower signal strengths and fast movement, enabling TV reception when in a moving vehicle.
  • DVB-H can carry MPEG-4 video streams at 11 Mbits/sec, enabling 30-35 TV streams to a cellular phone at 150-400 kbits/sec.
  • DVB-H will be delivered over a 5-MHz segment of the L-band.
  • the L-band spectrum extends from 1440 to 1790 MHz, so if adopted would place the frequencies for DVB-H in the US well above the frequency band used for it in Europe.
  • the recording of a TV broadcast is a feature that at least some modern mobile terminals will be expected to support. At present, almost all mobile terminals support mass memory that is implemented by a memory card interface, MMC/SD card readers.
  • Some typical use cases for recording a TV broadcast can include, but need not be limited to: TV recording while watching the same channel; TV recording while watching another channel; TV recording in the background, while performing some other memory card- intensive operation; and watching TV while some memory card-intensive operation is running in the background.
  • EMI electromagnetic radiation interference
  • the EMI induced by the interface between the phone engine and the memory card can vary depending on the specifics of the mobile terminal and memory card reader construction.
  • the termination pins (electrical connectors) of the memory card reader and the memory card reader body itself may be poorly shielded, resulting in one source of EMI.
  • Complicating this is the fact that modern mobile te ⁇ ninals can take many different forms of construction.
  • the mobile terminal is implemented by two circuit blocks (two PWBs)
  • one block will typically include the baseband engine and another block the memory card interface, hi this case the memory card interface between the PWB blocks can serve as another source of EMI since the electrical inter-connectivity between the blocks can be carried at least in part by wiring that has the potential to radiation EMI.
  • a bursty communication is wirelessly received at a mobile device.
  • the bursty commum ' cation is characterized by receiving periods and non-receiving periods. Memory card operations within the mobile device are synchronized to the non- receiving periods.
  • a mobile terminal that includes a receiver, a processor, a mass memory interface, and software embodied on a computer readable medium.
  • the receiver is configured to receive a bursty communication, where the bursty communication includes both receiving periods and non-receiving periods.
  • the processor is coupled to the receiver through a receiver interface.
  • the mass media interface is for coupling a removable mass memory device to the processor.
  • the software operates with the processor to synchronize reading and writing operations that pass through the mass media interface with the non-receiving periods.
  • the invention is a program of machine- readable instructions, tangibly embodied on a computer readable memory and executable by a digital data processor, to perform actions directed toward synchronizing read and write operations with a bursty communication.
  • the actions include disabling read and write operations for a removable mass memory device when a wireless receiver is receiving the bursty communication.
  • the removable mass memory device is separate from the computer readable memory on which the program is embodied.
  • the actions include enabling the read and write operations when the wireless receiver is not receiving the bursty communication.
  • a mobile communications device that includes receiving means, processing means, interface means, and software embodied on a computer readable medium.
  • the receiving means is configured to receive a bursty communication that has receiving periods and non-receiving periods.
  • the processing means is coupled to the receiving means.
  • the interface means is for removably coupling a removable memory device to the processor.
  • the software operates with the processing means to synchronize memory operations that use the interface means with the non-receiving periods.
  • the receiving means may be a digital video broadcast receiver and the bursty communication includes a digital video broadcast using time slicing as detailed herein.
  • the processing means may be a digital processor, a microprocessor, a multi-core processor, or a plurality of distinctly separate processors within the mobile communications terminal.
  • the interface means includes a memory card reader that is configured for removably coupling any of the various memory card devices detailed herein to the processor.
  • Figure 1 is a waveform diagram that illustrates a typical network DVB-H reception timing.
  • Figure 2 is a waveform diagram that illustrates an assumed worst case network
  • Figure 3 is a simplified block diagram of a portion of a mobile terminal related to synchronization of memory card operation during DVB-H reception.
  • Figure 4 is a simplified block diagram of a mobile terminal similar to Figure 3 but showing additional components.
  • Figure 5 is a prior art conceptual structure of a DVB-H receiver that may be used in the embodiments of Figures 3-4.
  • the exemplary embodiments of this invention are applicable to at least the following types of memory cards: MMC, SD, Mini SD, RS MMC and Micro SD. While the advantages of this invention are most pronounced when used in the context of memory cards, these teachings may also be extended to any mass media storage device that is normally removable from a mobile terminal or other portable memory device, such as a flash drive (e.g., thumb drive or memory stick).
  • a flash drive e.g., thumb drive or memory stick
  • DVB-H transmission is performed in bursts, resulting in the receiving/non-receiving periods of the DVB-H receiver being known.
  • the exemplary embodiments of this invention beneficially synchronize memory card operation to those time periods when the DVB-H receiver is off.
  • the memory card When the DVB-H receiver is receiving a broadcast burst the memory card is set to a mode wherein its internal clocks are disabled. The data transmission over the memory card interface is also disabled during this time.
  • the DVB-H receiver is not receiving a burst, the memory card can be enabled for normal operation, and data transfer can occur over the memory card interface.
  • the overall synchronization of memory card operation can be performed by SW, although a HW implementation, or a joint SW/HW implementation may also be employed.
  • Figure 1 illustrates a DVB-H receiver on-time 30 of 200ms and off-time 32 of
  • Figure 2 illustrates a worst-case scenario of the DVB-H receiver on-time 34 of 400 ms and off-time 36 1090ms.
  • the worst case configuration can occur when the mobile terminal is receiving one DVB-H service 34a and recording another one 34b. While the relative position of the two bursts 34a, 34b may vary, in the worst case scenario as illustrated they are adjacent to one another.
  • the vertical axis of Figures 1-2 represent the elementary stream ES rate (in thousands of bits per second) for DVB-H, a data rate.
  • Time slicing consists of sending data is bursts using a significantly higher instantaneous bit rate as compared to the bit rate required if the data were transmitted using traditional streaming mechanisms.
  • DVB-H indicates to the receiver a time (delta-t) within the current burst that indicates the beginning of the next burst. Between the bursts, data of the DVB-H elementary stream is not transmitted, allowing other ESs to use the bandwidth otherwise allocated.
  • Time slicing enables a receiver to stay active only a fraction of the time, while receiving bursts of a requested service. Note that the transmitter of the DVB is always on (i.e., the transmission of the transport stream is not interrupted).
  • Time slicing is always used in DVB-H, and in characterizing the receiver below, the time-sliced signal is referred to from the receiver's perspective as a bursty communication having receiving periods (the bursts) and non-receiving periods (between the bursts).
  • the receiver is considered to be in an active state during the receiving periods and in an inactive state during the non-receiving periods, where certain functions of the receiver are de-powered or operated at a reduced power level or frequency to conserve energy.
  • FIG. 5 A prior art conceptual diagram of a DVB-H receiver 5 a is shown at Figure 5, where a power control signal 5b from a time slicing block 5c controls whether a DVB-T demodulator 5d is powered or not according to the delta-t's received in each of the packets of the DVB-T signal 5e.
  • a power control signal 5b from a time slicing block 5c controls whether a DVB-T demodulator 5d is powered or not according to the delta-t's received in each of the packets of the DVB-T signal 5e.
  • Operating with the DVB-T demodulator 5d depowered between the bursts is an example of operating the DVB-H receiver 5a in an inactive state.
  • An active state is in a condition to receive and process the bursts of the DVB-H signal 5e, and the inactive state is in other than that condition.
  • the below description refers to the periods of time during which the receiver is in an active and an inactive state
  • Time slicing also supports the possibility of the receiver monitoring neighboring cells during its off times, between bursts. By switching from reception of one stream to another during the off times, it is possible- to perform a quasi-optimal handover decision as well as seamless service handover.
  • FIG. 3 is a simplified block diagram of a portion of a mobile terminal 10 related to synchronization of the operation of a memory card 12 and associated memory card reader 14 during DVB-H reception by a DVB-H receiver 16 having an input connected to a DVB-H antenna 18.
  • the mobile terminal 10 is assumed to include at least one data processor, referred to herein for convenience as an Application Engine Processor (AEP) 20 that in turn is bidirectionally coupled to an Application Engine Memory (AEM) 22 via memory bus 22A.
  • AEP 20 is also bidirectionally coupled to the memory card reader 14 and to the DVB-H receiver 16 via memory card interface 20 A and a DVB-H data interface 2OB, respectively.
  • the AEP 20 may include the above-mentioned baseband circuitry for a non-limiting example where the mobile terminal 10 is embodied as a cellular phone.
  • the mobile terminal 10 comprises a cellular phone
  • the cellular phone related components such as the cellular band(s) RF transceivers 26 and RF parts
  • Figure 4 in addition to those components described with reference to Figure 3 and bearing like reference numbers.
  • UI user interface
  • a portable power supply such as a galvanic battery 34.
  • a cellular/PCS antenna 32 is shown as separate from the DVB-H antenna 18, the functions of both may be combined into a single multi-band antenna with multiple active elements for radiating in the respective frequency bands.
  • the various embodiments of the mobile terminal 10 can include, but are not limited to, cellular phones, personal digital assistants (PDAs), portable computers, image capture devices such as digital cameras, gaming devices, music storage and playback appliances, Internet appliances, as well as portable units or terminals that incorporate combinations of such functions, and that further include a removable memory component 12 and a DVB-H receiver, or more generally any type of receiver that operates in frequency band that can potentially be adversely affected by EMI generated by operation of the removable memory component 12, particularly read and write operations.
  • PDAs personal digital assistants
  • portable computers image capture devices such as digital cameras, gaming devices, music storage and playback appliances, Internet appliances, as well as portable units or terminals that incorporate combinations of such functions
  • image capture devices such as digital cameras
  • gaming devices gaming devices
  • music storage and playback appliances Internet appliances
  • portable units or terminals that incorporate combinations of such functions
  • portable units or terminals that incorporate combinations of such functions
  • portable units or terminals that incorporate combinations of such functions
  • a removable memory component 12 and a DVB-H receiver
  • the memory card 12 is set to a state where its internal clock(s) are shut off, via the memory card interface 2OA and the memory card reader 14. If the memory card 12 happens to have a defined "reset” state, then the memory card 12 maybe commanded to enter the reset state. Also, before the DVB-H receiver 16 is set to the on state any data transmission in the memory card interface 2OA is disabled.
  • the DVB-H receiver 16 is then set to on and the received DVB-H data is collected into (i.e., buffered in) a mobile terminal 10 memory (RAM memory), such as the AEM 22, for the duration of the DVB-H receiver on-time (e.g., 200ms ( Figure 1) or 400ms ( Figure 2)).
  • RAM memory such as the AEM 22
  • the DVB-H data is temporarily buffered in the AEM 22, since the memory card 12 is effectively disabled during the DVB-H receiver 16 reception period.
  • the DVB-H receiver 16 is shut off the memory card 12 and memory card interface 2OA operation is enabled, and the received and buffered DVB-H data is transferred from the mobile terminal memory (e.g., the AEM 22) to the memory card 12 memory. This can occur via the memory bus 22A, AEP 20, memory card interface 20A and memory card reader 14, or the AEP 20 could be bypassed if a DMA (Direct Memory Access) technique is employed. Since the DVB-H receiver 16 is off, any EMI that may be generated by operation of the memory card 12 and the memory card interface 2OA does not affect the DVB-H receiver 16.
  • the mobile terminal memory e.g., the AEM 22
  • DMA Direct Memory Access
  • the memory card operations may be synchronized in the same manner.
  • the memory card 12 write and read operations are disabled when the DVB-H receiver 16 is on, and memory card 12 write and read operations are enabled when the DVB-H receiver 16 is off.
  • the DVB-H/memory card synchronization timing with AEP 20 may be accomplished by the use of a separate DVB-H activity signal 2OC coupled to an I/O input of the AEP 20 where it can be polled, or coupled to an interrupt input of the AEP 20 for generating an interrupt on a change of state of the DVB-H receiver 16 operation.
  • the DVB-H/memory card synchronization timing can be controlled through the use of SW timers implemented by the AEP 20. Some combination of SW timers and the DVB-H activity signal 2OC may also be employed if desired.
  • SW synchronization it maybe preferred to place this under control of the software subsystem that has immediate control over the memory card 12 and memory card interface 2OA operations, e.g., under control of memory card driver (MCD) SW 24 that maybe resident in the AEM 22.
  • MCD memory card driver
  • One advantage of the use of the exemplary embodiments of this invention is that by preventing operation of the memory card 12 during a DVB-H reception period, the memory card 12 and memory card interface 2OA do not cause interference into the DVB-H frequency band.
  • the performance of the DVB-H receiver 16 (sensitivity- wise) thus remains the same during a recording function (when received DVB-H data is being stored locally in the mobile terminal 10 for subsequent playback).
  • Another advantage of the use of the exemplary embodiments of this invention is that it is clearly more cost effective that providing mechanical shielding, and also avoids changes in form factor, weight and complexity that maybe associated with a mechanical shielding approach.
  • Another advantage of the use of the exemplary embodiments of this invention is that one may decrease filter component count in the memory card interface 2OA.
  • the exemplary embodiments of this invention may be implemented by computer software executable by the AEP 20, or by hardware, or by a combination of software and hardware, hi general, the various embodiments may be implemented in hardware or special purpose circuits, software, logic or any combination thereof.
  • some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device, although the invention is not limited thereto.
  • Embodiments of the inventions may be practiced in various components such as integrated circuit modules.
  • the design of integrated circuits is by and large a highly automated process.
  • Complex and powerful software tools are available for converting a logic level design into a semiconductor circuit design ready to be etched and formed on a semiconductor substrate.
  • California and Cadence Design of San Jose, California automatically route conductors and locate components on a semiconductor chip using well established rules of design as well as libraries of pre-stored design modules.
  • the resultant design in a standardized electronic format (e.g., Opus, GDSII, or the like) may be transmitted to a semiconductor fabrication facility or "fab" for fabrication.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • General Engineering & Computer Science (AREA)
  • Software Systems (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

L'invention concerne un procédé, un terminal mobile, un programme informatique intégré et un dispositif sans fil, recevant au niveau d'un dispositif mobile une communication en rafale qui comprend des périodes de réception et des périodes de non réception. Des opérations de carte mémoire effectuées dans le dispositif mobile sont synchronisées sur les périodes de non réception, ce qui empêche les interférences entre des opérations de lecture à partir de la carte mémoire amovible/des opérations d'écriture sur ladite carte et la réception d'une communication, ladite réception étant active pendant les périodes de réception et inactive pendant les périodes de non réception. La communication en rafale peut être un signal DVB-H utilisant le découpage temporel, le récepteur DVB-H fonctionnant au moins avec quelques uns de ses composés à l'état éteint afin de conserver l'énergie de la batterie.
PCT/IB2006/002953 2005-11-01 2006-10-20 Appareil, procede et produit de programme informatique permettant de synchroniser une operation de carte memoire pendant une reception dvb-h WO2007052103A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06809090A EP1946545A4 (fr) 2005-11-01 2006-10-20 Appareil, procede et produit de programme informatique permettant de synchroniser une operation de carte memoire pendant une reception dvb-h

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US73269405P 2005-11-01 2005-11-01
US60/732,694 2005-11-01

Publications (1)

Publication Number Publication Date
WO2007052103A1 true WO2007052103A1 (fr) 2007-05-10

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PCT/IB2006/002953 WO2007052103A1 (fr) 2005-11-01 2006-10-20 Appareil, procede et produit de programme informatique permettant de synchroniser une operation de carte memoire pendant une reception dvb-h

Country Status (4)

Country Link
EP (1) EP1946545A4 (fr)
KR (1) KR100969709B1 (fr)
CN (1) CN101331758A (fr)
WO (1) WO2007052103A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5584044A (en) * 1990-09-28 1996-12-10 Fuji Photo Film Co., Ltd. Integrated circuit memory card for write in/read out capability having plurality of latching means for expandable addressing using counting means for enabling latches thereof
US20030075609A1 (en) * 2001-10-19 2003-04-24 Samsung Electronics Co., Ltd. Memory card, digital device, and method of data interfacing between memory card and digital device
US20030090953A1 (en) * 2001-11-05 2003-05-15 Matsushita Electric Industrial Co., Ltd. Semiconductor memory card, method of controlling the same and interface apparatus for semiconductor memory card
WO2005041537A1 (fr) * 2003-10-22 2005-05-06 Nokia Corporation Systeme et terminal associe, methode et programme informatique pour regler le flux de contenu
WO2006075148A2 (fr) * 2005-01-12 2006-07-20 Electra Entertainment Limited Manipulation de carte memoire pour l'amelioration des services televisuels interactifs

Family Cites Families (4)

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Publication number Priority date Publication date Assignee Title
US5842037A (en) * 1995-03-20 1998-11-24 Telefonaktiebolaget Lm Ericsson Interference reduction in TDM-communication/computing devices
WO2001039406A2 (fr) * 1999-11-25 2001-05-31 Siemens Aktiengesellschaft Procede permettant de faire fonctionner un appareil radio a un niveau de parasites reduit et appareil radio correspondant
EP1301036A3 (fr) * 2001-10-03 2004-01-14 Konica Corporation Dispositif de télécommunication
US20050097624A1 (en) * 2003-10-31 2005-05-05 Nokia Corporation System and associated terminal, method and computer program product for providing broadcast content

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5584044A (en) * 1990-09-28 1996-12-10 Fuji Photo Film Co., Ltd. Integrated circuit memory card for write in/read out capability having plurality of latching means for expandable addressing using counting means for enabling latches thereof
US20030075609A1 (en) * 2001-10-19 2003-04-24 Samsung Electronics Co., Ltd. Memory card, digital device, and method of data interfacing between memory card and digital device
US20030090953A1 (en) * 2001-11-05 2003-05-15 Matsushita Electric Industrial Co., Ltd. Semiconductor memory card, method of controlling the same and interface apparatus for semiconductor memory card
WO2005041537A1 (fr) * 2003-10-22 2005-05-06 Nokia Corporation Systeme et terminal associe, methode et programme informatique pour regler le flux de contenu
WO2006075148A2 (fr) * 2005-01-12 2006-07-20 Electra Entertainment Limited Manipulation de carte memoire pour l'amelioration des services televisuels interactifs

Also Published As

Publication number Publication date
KR20080072024A (ko) 2008-08-05
KR100969709B1 (ko) 2010-07-14
EP1946545A1 (fr) 2008-07-23
CN101331758A (zh) 2008-12-24
EP1946545A4 (fr) 2011-12-21

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