A communication system includes a terminal having a first storage section for storing a number of pieces of content information, a second storage section for storing a number of pieces of the content information, a storage control section for placing a content ID stored in the second storage section into purchase information for each terminal and stored in the second storage section, an access control section for controlling access to the content information corresponding to the content ID stored in the second storage section, and an accounting setting section for setting an amount of a fee to be imposed on the terminal in response to the purchase information.

A communication apparatus configured to transmit data to an apparatus, the communication apparatus including: a storage medium configured to store management information of data to be transferred to the apparatus; a communicator configured to communicate data with the apparatus; a detector configured to detect whether the communication apparatus and the apparatus are connected; an editor configured to select certain data to be transferred and to edit the management information based on the selection without regard to the connection of the communication apparatus and the apparatus; and a controller configured to control transfer of the selected data stored in the communication apparatus to the apparatus via the communicator based on the management information edited by the editor when the detector detects that the communication apparatus and the apparatus are connected, wherein the controller is configured to compare the management information edited by the editor with management information of data stored in the apparatus, determine the size of the selected data in the communication apparatus, and transmit data in the communication apparatus based on result of the comparison and the determination.

This invention relates to a communication system including a first apparatus having a first storage medium, and a second apparatus for transmitting data to the first apparatus, the second apparatus comprising: a second storage medium for storing management information of data to be transferred to the first storage medium; communication means for communicating data with the first apparatus; edit means capable of editing the management information; and control means for making a control to transfer data stored in the second storage medium to the first storage medium by way of the communication means on the basis of the management information edited by the edit means.

This invention relates to a communication system including a first apparatus having a first storage medium, and a second apparatus for transmitting data to the first apparatus, the second apparatus comprising: a second storage medium for storing management information of data to be transferred to the first storage medium; communication means for communicating data with the first apparatus; edit means capable of editing the management information; and control means for making a control to transfer data stored in the second storage medium to the first storage medium by way of the communication means on the basis of the management information edited by the edit means.

The image recording apparatus according to the present invention is provided with a conversion device that converts an optical image of a subject to an electrical signal, a recording circuit that records the electrical signal achieved through the conversion device in a storage device as image data and a display control circuit that detects an available capacity at the storage device and the length of time that power supply by a source is possible and displays them on a display as available capacity information and remaining power supply time information. The available capacity information indicates the length of available recording time remaining at the available capacity that has been detected.

An apparatus comprises a heat-assisted magnetic recording head configured to write to and read from a magnetic recording medium. The head comprises a reader and a writer including a near-field transducer (NFT). The reader comprises a center which is laterally offset relative to a center of the writer to define a reader-writer offset (RWO) therebetween. A magnetic recording medium comprises a plurality of tracks. The plurality of tracks comprises at least one track used as a region to test for a shift in the RWO. A processor is coupled to the recording head and configured to detect the RWO shift.

An apparatus comprises a heat-assisted magnetic recording (HAMR) head, a sensor, and a controller. The HAMR head is configured to interact with a magnetic storage medium. The sensor is configured to produce a signal indicating the occurrence of head-medium contact. The controller is configured to receive the signal and concurrently determine from the signal if the occurrence of head-medium contact is caused by a first contact detection parameter, a second contact detection parameter, or both the first and second contact detection parameters.