Abstract: A method of classifying video data representing activity within a space to be monitored. A method comprises storing video data obtained from a camera configured to monitor the space. Sensor data indicative of a condition occurring within the space is obtained, and a plurality of programme elements are defined within the video data. Each programme element has an associated classification code, and each classification code is selected using the sensor data.

Abstract: A method of classifying video data representing activity within a space to be monitored. A method comprises storing video data obtained from a camera configured to monitor the space. Sensor data indicative of a condition occurring within the space is obtained, and a plurality of programme elements are defined within the video data. Each programme element has an associated classification code, and each classification code is selected using the sensor data.

Abstract: A method of classifying video data representing activity within a space to be monitored. A method comprises storing video data obtained from a camera configured to monitor the space. Sensor data indicative of a condition occurring within the space is obtained, and a plurality of programme elements are defined within the video data. Each programme element has an associated classification code, and each classification code is selected using the sensor data.

Abstract: A method of classifying video data representing activity within a space to be monitored. A method comprises storing video data obtained from a camera configured to monitor the space. Sensor data indicative of a condition occurring within the space is obtained, and a plurality of programme elements are defined within the video data. Each programme element has an associated classification code, and each classification code is selected using the sensor data.

Abstract: A method of classifying video data representing activity within a space to be monitored. A method comprises storing video data obtained from a camera configured to monitor the space. Sensor data indicative of a condition occurring within the space is obtained, and a plurality of programme elements are defined within the video data. Each programme element has an associated classification code, and each classification code is selected using the sensor data.

Abstract: A method of classifying video data representing activity within a space to be monitored. A method comprises storing video data obtained from a camera configured to monitor the space. Sensor data indicative of a condition occurring within the space is obtained, and a plurality of programme elements are defined within the video data. Each programme element has an associated classification code, and each classification code is selected using the sensor data.

Abstract: A method of classifying video data representing activity within a space to be monitored. A method comprises storing video data obtained from a camera configured to monitor the space. Sensor data indicative of a condition occurring within the space is obtained, and a plurality of program elements are defined within the video data. Each program element has an associated classification code, and each classification code is selected using the sensor data.

Abstract: A method of classifying video data representing activity within a space to be monitored. A method comprises storing video data obtained from a camera configured to monitor the space. Sensor data indicative of a condition occurring within the space is obtained, and a plurality of programme elements are defined within the video data. Each programme element has an associated classification code, and each classification code is selected using the sensor data.

Abstract: A method of classifying video data representing activity within a space to be monitored. A method comprises storing video data obtained from a camera configured to monitor the space. Sensor data indicative of a condition occurring within the space is obtained, and a plurality of program elements are defined within the video data. Each program element has an associated classification code, and each classification code is selected using the sensor data.

Abstract: A method of distributing video data comprising defining a plurality of programme elements, each programme element comprising a video clip taken from said video data. Each programme element is allocated to one of a predetermined plurality of classes, each class having an associated icon. Data representing a plurality of icons is transmitted to a receiver, each icon representing a class to which a respective one of said plurality of programme elements is allocated. User selection data indicative of a user selection of at least one icon is received, and data associated with the or each programme element associated with the user selection data is transmitted to the receiver. A method for generating video data, and a method for presenting video data are also disclosed.

Abstract: A method of classifying video data representing activity within a space to be monitored. A method comprises storing video data obtained from a camera configured to monitor the space. Sensor data indicative of a condition occurring within the space is obtained, and a plurality of programme elements are defined within the video data. Each programme element has an associated classification code, and each classification code is selected using the sensor data.

Abstract: A method for presenting a plurality of programme elements to a user. Each programme element has an associated classification code, and the method comprises presenting a user interface operable to receive user selection data indicating one of said plurality of programme elements, and to cause display of said indicated programme element. One of said programme elements is presented, the classification code associated with said presented programme element is screened to determine if said classification code satisfies a predetermined criteria and operation of said user interface is disabled if but only if said predetermined criteria is satisfied.

Abstract: A method and apparatus for generating a programme for presentation as a sequence of programme elements from a set of pre-recorded programme elements which may be transmitted to a receiver. Programme elements each representing for example an event are classified on the basis of programme element content, that is the nature of the event to which the programme element relates. Each programme element is allocated to at least one of the predetermined set of classes and each programme element is stored with at least one associated programme classification code. The classification codes identify the class to which the associated programme element has been allocated. A programme element is generated by selecting at least one programme classification code and presenting programme elements associated with that selected at least one programme classification code. Users are able to generate programmes based on for example the perceived value of individual programme elements.

Abstract: A method and apparatus for generating a programme for presentation as a sequence of programme elements from a set of prerecorded programme elements which may be transmitted to a receiver. Programme elements each representing for example an event are classified on the basis of programme element content, that is the nature of the event to which the programme element relates. Each programme element is allocated to at least one of a predetermined set of classes and each programme element is stored with at least one associated programme classification code. The classification codes identify the class to which the associated programme element has been allocated. A programme element is generated by selecting at least one programme classification code and presenting programme elements associated with that selected at least one programme classification code. Users are able to generate programmes based on for example the perceived value of individual programme elements.

Abstract: A data retrieval system in which data to be retrieved is stored in the memory of a host computer and accessed from user terminals which transmit requests for data to the host. Data is stored in the host computer in the form of a series of search terms arranged in a predetermined logical order, and each stored search term is stored with associated data to which users require access. Data retrieval requests are entered by users in the form of search terms corresponding in logical structure to the search terms stored in the host computer. The host computer memory is partitioned into a series of blocks in each of which is stored both search terms falling within a respective predetermined range of the logical order and the data associated with these search terms. Each user terminal has a memory in which is stored an index that cross references the memory address of each block in the host memory with the range of search terms stored within that block.