摘要:
An IC card capable of a high-speed data transmission to/from a data transmission apparatus which is low in processing capability, is provided. The IC card of the present invention comprises: a controlling section which generates a data packet by adding management information including information regarding a data length of the data packet, and which divides the above-mentioned data packet to generate data blocks wherein a data length of the data block is designated from the data transmission apparatus; and a communicating section which sends an interrupt signal to the above-mentioned data transmission apparatus when the above-mentioned data block which includes the above-mentioned management information is to be sent, and does not send the above-mentioned interrupt signal to the above-mentioned data transmission apparatus when a data block which does not include the above-mentioned management information is to be sent, in a case where a plurality of the above-mentioned data blocks which compose the single above-mentioned data packet are sent to the above-mentioned data transmission apparatus.
摘要:
A digital broadcasting receiver apparatus is provided with a functional module card that includes a digital broadcasting reception function and a host apparatus to which the functional module card can be attached as an optional unit. The functional module card and the host apparatus according to the present invention can constitute the digital broadcasting receiver apparatus. The functional module card includes a card controller and a tuner section. The tuner section inputs a digital broadcasting signal, generates a TS and a TS clock for transferring the TS, and directly transfers the TS and the TS clock to a decoder and descrambler of the host apparatus via a bus. The host apparatus includes a host controller that communicates with the card controller, an input and output section, and a decoder and descrambler. A data transfer method for transferring data between the card controller and the host controller is a master-slave first data transfer method in which the host controller operates as a master apparatus. A data transfer method for transferring the data between the tuner section and the decoder and descrambler is a second data transfer method in which the TS clock is a transfer clock.
摘要:
In regard to a peripheral device in which commands are inputted and power is supplied from the main device, a peripheral device which can reduce power consumption while making use of a necessary function is provided. Peripheral device of the present invention comprises a functional unit which carries out a function based on commands from main device; a power control section which controls power consumption of the above-mentioned functional unit; a power profile information memory which memorizes a power profile information list that includes single or plural power profile information; and an interface section which sends and receives the above-mentioned power profile information and commands relevant to the functional unit to and from the above-mentioned main device; wherein the above-mentioned interface section corresponds to the demand from the above-mentioned main device and sends the above-mentioned power profile information list to the above-mentioned main device; and the above-mentioned power control section controls power consumption of the above-mentioned functional unit by corresponding to the selected information of the above-mentioned power profile information that was received from the above-mentioned main device.
摘要:
This invention relates to a time code recording/reproduction apparatus for recording and reproducing a time code corresponding to a digital signal. Time code conversion means (100) converts a first time code to a second time code and frame timing generation means determines a frame phase used when the input information is recorded. Phase difference detection means (103) detects the phase difference between the frame of the second time code and a recording frame and phase difference correction means (104) outputs a third time code on the basis of the detected phase difference and the input information is recorded together with the third time code. Accordingly, the input information can be recorded or reproduced while its relationship with a corresponding time code is being retained.
摘要:
To provide a method for controlling a transmission system with quick response in which plural electronic devices are connected to one host apparatus through a common data line. The method for controlling the transmission system of the present invention comprises: a step of transmitting a command signal for releasing the data line and suspending the processing through a command signal line to the electronic device occupying the data line in the state where one of the plural electronic devices is executing the processing that occupies the data line so as to make the electronic device release the data line and suspend the processing and to perform data transmission between the host apparatus and the other one of the electronic devices; and a step of resuming the suspended processing after the data transmission between the host apparatus and the other electronic device.
摘要:
A small-sized and low-cost transmission apparatus and a transmission method (having a high responsivity) capable of transmitting an interrupt signal with a small number of input/output terminals (without a dedicated line for interrupt signals) are provided. A first transmission apparatus of the present invention comprises a central processing unit for carrying out an interrupt process in response to an interrupt signal; an input/output section having at least one data line for transmitting data signals between a second transmission apparatus and the first transmission apparatus and for transmitting an interrupt signal from the second transmission apparatus to the first transmission apparatus; and an interrupt signal detecting section for detecting an interrupt signal from among signals transmitted from the second transmission apparatus via the data line.
摘要:
This invention relates to a time code recording/reproduction apparatus for recording and reproducing a time code corresponding to a digital signal. Time code conversion means (100) converts a first time code to a second time code and frame timing generation means determines a frame phase used when the input information is recorded. Phase difference detection means (103) detects the phase difference between the frame of the second time code and a recording frame and phase difference correction means (104) outputs a third time code on the basis of the detected phase difference and the input information is recorded together with the third time code. Accordingly, the input information can be recorded or reproduced while its relationship with a corresponding time code is being retained.