公开(公告)号：EP1362431B1

公开(公告)日：2006-05-31

申请号：EP02712071.6

申请日：2002-02-14

申请人： Radioscape Limited

发明人： FERRIS, Gavin, Robert ,  UDY, Christopher, Alfred

IPC分类号： H04B1/40 ,  H04B1/28 ,  H04Q7/30

CPC分类号： H04B1/0007 ,  H04B1/28

摘要： A digital interface between analogue RF hardware and digital processing hardware which (a) defines how the analogue RF hardware and digital processing hardware send and receive digital data to one another and (b) is open in order to decouple the design of the analogue RF hardware from the design of the digital processing hardware. The adoption of such an interface will facilitate the uptake of software defined radio (SDR), both as a design-time and run-time technology, as it enables the production of analogue/RF components independently from the digital domain hardware and software.

公开(公告)号：EP1419501A1

公开(公告)日：2004-05-19

申请号：EP02751415.7

申请日：2002-08-13

申请人： Radioscape Limited

发明人： FERRIS, Gavin Robert ,  CALCAGNO, Alessio Pietro

IPC分类号： G10L19/14

CPC分类号： G10L19/018

摘要： An MPEG 1 layer II encoder can be programmed to add a data payload to a frame. It uses a conventional Musicam pyshoacoustic model to apply a sub-band resolution parameter that is constant across a window of a given number of samples. The encoder is further programmed to apply a sub-band resolution algorithm that generates a more accurate set of resolution parameters that vary across at least part of a given window, the difference between the constant parameter and the variable resolution parameters for the same window being indicative of bits which can be overwritten with the data payload.

公开(公告)号：EP1290546A2

公开(公告)日：2003-03-12

申请号：EP01931962.3

申请日：2001-05-25

申请人： Radioscape Limited

发明人： FERRIS, Gavin, Robert

IPC分类号： G06F9/00

CPC分类号： G06F17/5045 ,  G06F15/7867 ,  Y02D10/12 ,  Y02D10/13

摘要： A programmable single-chip device, comprising a programmable gate array (PGA) section, a DSP core and a RISC core. The device is ideal for prototyping and deploying low-to-moderate volume implementations of high-bandwidth algorithms, which have processing requirements split between front-end, high iteration, low-numeric-agility, "wide" loadings, middle-end, moderate iteration, high-numerical-precision loadings and back-end, low-iteration, highly conditional loadings, without the commensurate problems inherent in the custom ASIC, joint FPGA/DSP/RISC (or even direct compilation to FPGA) solutions.

公开(公告)号：EP1254418A2

公开(公告)日：2002-11-06

申请号：EP01942750.9

申请日：2001-01-24

申请人： Radioscape Limited

发明人： FERRIS, Gavin Robert

IPC分类号： G06F17/50

CPC分类号： G06F17/5022 ,  G06F17/5045 ,  H04L27/20

摘要： A method of designing, modelling or fabricating a communications baseband stack, comprising the steps of: (a) creating a description of one or more of the following parameters of the baseband stack: (i) resource requirements; (ii) capabilities; (iii) behaviour; and (b) using that description as an input to software comprising a virtual machine layer optimised for a communications DSP in order to generate an emulation of the baseband stack to be designed, modelled or fabricated.

公开(公告)号：EP1779215A2

公开(公告)日：2007-05-02

申请号：EP05767902.9

申请日：2005-07-29

申请人： Radioscape Limited

发明人： DEWHURST, Andrew

IPC分类号： G06F1/00

CPC分类号： H04H20/28 ,  G06F21/10 ,  H04H20/40 ,  H04H60/16 ,  H04H60/27

摘要： Music tracks are received over wireless digital radio and stored in encrypted form in a digital media player, but only when the player is receiving and playing back advertisements is it possibly to playback stored, encrypted tracks. A user could therefore build up a large library of music tracks over time, stored on the player, knowing that he could listen to any so long as he was prepared also to listen to advertisements. No payment is needed to initially receive and store the tracks; instead, distributors of the content and the content owners can be paid out of the advertising revenue. Further decryption of stored media content, beyond the limited amount decrypted once a decryption key associated with a given advertisement has been received and processed, is possible only so long as subsequent advertisements axe received at and played back by the player.

公开(公告)号：EP1290546B1

公开(公告)日：2004-08-11

申请号：EP01931962.3

申请日：2001-05-25

申请人： Radioscape Limited

发明人： FERRIS, Gavin, Robert

IPC分类号： G06F15/78 ,  G06F17/50

CPC分类号： G06F17/5045 ,  G06F15/7867 ,  Y02D10/12 ,  Y02D10/13

摘要： A programmable single-chip device, comprising a programmable gate array (PGA) section, a DSP core and a RISC core. The device is ideal for prototyping and deploying low-to-moderate volume implementations of high-bandwidth algorithms, which have processing requirements split between front-end, high iteration, low-numeric-agility, "wide" loadings, middle-end, moderate iteration, high-numerical-precision loadings and back-end, low-iteration, highly conditional loadings, without the commensurate problems inherent in the custom ASIC, joint FPGA/DSP/RISC (or even direct compilation to FPGA) solutions.

公开(公告)号：EP1362431A2

公开(公告)日：2003-11-19

申请号：EP02712071.6

申请日：2002-02-14

申请人： Radioscape Limited

发明人： FERRIS, Gavin, Robert ,  UDY, Christopher, Alfred

IPC分类号： H04B1/40 ,  H04B1/28 ,  H04Q7/30

CPC分类号： H04B1/0007 ,  H04B1/28

摘要： A digital interface between analogue RF hardware and digital processing hardware which (a) defines how the analogue RF hardware and digital processing hardware send and receive digital data to one another and (b) is open in order to decouple the design of the analogue RF hardware from the design of the digital processing hardware. The adoption of such an interface will facilitate the uptake of software defined radio (SDR), both as a design-time and run-time technology, as it enables the production of analogue/RF components independently from the digital domain hardware and software.

公开(公告)号：EP1016209A1

公开(公告)日：2000-07-05

申请号：EP98940409.0

申请日：1998-08-27

申请人： Radioscape Limited

发明人： FERRIS, Gavin Robert,Radioscape Limited ,  FLORENCE, Peter Charles,Radioscape Limited

IPC分类号： H03C1/00 ,  H03C5/00 ,  H03D1/00 ,  H03D5/00

CPC分类号： H03J3/08 ,  H03J1/0008 ,  H04B1/16 ,  H04B1/406 ,  H04H40/18

摘要： In a first aspect the invention provides an apparatus for processing radio signals for connection to a personal computing device (PCD), in which a stream of digitised intermediate frequency (IF) data is maintained in at least one direction. In the inbound direction, information is received (104) as radio frequency (RF) signals by the device, down-converted (105) to IF and then digitised (107) and fed into the PCD (109) under control of an interface management unit (IMU 108). Software modules in the PCD then provide whatever demodulation processing is required for the transmission scheme in use. The invention further provides a transmitter apparatus. In the outbound direction, an IF signal is digitally synthesised by software on the PCD (109), according to an appropriate modulation scheme, and the resulting signal is passed to the device via the IMU, where it is used to generate (110) a corresponding analogue waveform. This waveform is then up-converted (112) to RF at the appropriate frequency and transmitted. As the PCD software is able to send commands to the device to set the centre frequency and bandwidth of RF to be accepted and transmitted, the device (together with appropriate software on the PCD) provides the basis for a generic, low-cost radio-frequency communications system. The invention may further provide a transceiver apparatus having both inbound and outbound channels.

摘要翻译： 在第一方面，本发明提供一种用于处理用于连接到个人计算设备（PCD）的无线电信号的设备，其中数字化中频（IF）数据流在至少一个方向上被维持。 在入站方向上，由设备将信息作为射频（RF）信号接收（104），下变频（105）到IF然后数字化（107）并在接口管理的控制下馈送到PCD（109） 单元（IMU 108）。 PCD中的软件模块随后提供所使用的传输方案所需的任何解调处理。 本发明还提供了一种发射机装置。 在出站方向，根据适当的调制方案，通过PCD（109）上的软件数字地合成IF信号，并且所得到的信号经由IMU传递到设备，其中它被用于生成（110）a 相应的模拟波形。 该波形然后被上变频（112）到适当频率的RF并被发送。 由于PCD软件能够向设备发送命令以设置RF的中心频率和带宽以被接受和传输，因此设备（连同PCD上的适当软件）为通用，低成本无线电通信设备提供了基础， 高频通信系统。 本发明可以进一步提供具有入站和出站信道的收发器装置。

公开(公告)号：EP1800424A2

公开(公告)日：2007-06-27

申请号：EP05789257.2

申请日：2005-09-30

申请人： Radioscape Limited

发明人： BANHAM, Dominic, Thomas, Parfrey ,  SABEL, Les, c/o Radioscape Limited

IPC分类号： H04H1/00

CPC分类号： H04H20/59 ,  H04H20/06 ,  H04H20/103 ,  H04H2201/20

摘要： Emergency message transmitters are deployed in tunnels etc. to transmit emergency messages to users (e.g. motorists) equipped with radio receivers. Configuration information is derived from a normal, broadcast digital signal using a receiver situated at the tunnel mouth; this configuration information can include information defining the sub-channel structure. A pre-recorded or live audio emergency message is then processed so that, when transmitted, it will conform to the configuration information. The processed message is then transmitted within the tunnel during an emergency. Because the configuration information of the message matches that of the broadcast signal that was being processed by a user's radio receiver immediately prior to receipt of the emergency message, processing is far faster since the user's radio receiver does not have to re-configure itself.

公开(公告)号：EP1678838A1

公开(公告)日：2006-07-12

申请号：EP04768793.4

申请日：2004-10-07

申请人： Radioscape Limited

发明人： SABEL, Les, Radioscape Limited

IPC分类号： H04B1/04 ,  H04H1/00 ,  H04H3/00 ,  H04L27/26

CPC分类号： H04L27/2626 ,  H04H20/67 ,  H04H20/72 ,  H04H60/02 ,  H04H2201/20 ,  H04L5/06 ,  H04L27/2602

摘要： This patent describes a method which allows multiple DAB transmission signals to be modulated, up-converted, filtered and combined prior to a High Power Amplifier (HPA), thus reducing the multiple up-conversion and HPA to a single unit and eliminating the need for a high power combiner. This significantly reduces the equipment needed for multi-channel transmissions and the consequent cost. In addition the techniques described provide signal timing alignment as required in Single Frequency Networks (SFN).