摘要:
Regularity information such as time codes embedded preliminarily through an electronic watermark is detected from a predetermined number of pieces of continuous frame data of video content through the electronic watermark. In the case where the electronic watermark is not detected from the predetermined number of pieces of continuous frame data, a non-detection count is calculated, and falsification of the predetermined number of pieces of frame data is determined on the basis of the detected regularity information and the non-detection count. Accordingly, falsification such as deletion, addition, and replacement of video content is detected with high accuracy using the electronic watermark.
摘要:
A semiconductor element capable of reducing noises of a circuit propagating to another circuit through a seal ring is provided. A semiconductor element includes, on a surface of a semiconductor substrate: a plurality of circuits; a ring-shaped seal ring surrounding the plurality of circuits; and wiring connecting between the seal ring and an external low-impedance node.
摘要:
The problem to be solved is to allow anyone other than the contents license owner to acquire a right usage opportunity of contents while the fraud in the contents can be detected. To solve this problem, a contents ID, distribution media information specifying the distribution media of the contents, and identification information containing distribution period information specifying the distribution period of the contents are attached to the contents body When a contents acceptance module 140 receives the contents data, an acquisition pattern recognition unit 142 recognizes the acquisition pattern information of the contents data. A identification information extraction module 154 of a contents validity determination module 150 extracts identification information from the contents data. A validity determination unit 153 compares the condition specified by this identification information with the contents acquisition media and the acquisition period indicated by the acquisition pattern information and if the acquisition pattern information satisfies the condition specified by the identification information, the contents data is stored in the contents-for-distribution file 126. Additionally, if the contents are determined to be illegal a deletion request is sent to the requestor.
摘要:
At least one kind of control signal concerning control of contents, added to specific locations inside contents data, is detected as first control information, and at the same time, at least one kind of control information concerning control of contents, embedded inside the contents data by a digital watermark, is detected as second control information. Consistency between the first control information as detected, and the second control information as detected is determined and on the basis of results of the determination, the control of the contents is executed. Thus, it is possible to reduce a possibility of the contents being improperly copied, thereby enabling the control with assurance of still higher safety.
摘要:
A power switch and connector that are conventionally included in a body are formed in spaces created at the outer ends of the shafts of hinges other than the body and a display, whereby the body is thinned. Electronic device comprises a body, a display, and a hinge that joins the body and display so that they can be freely opened or closed. A power switch is formed at an end of the shaft of the hinge. Furthermore, the electronic device comprises the body, the display, and another hinge that joins the body and display so that they can be freely opened or closed. A port of a connector opens at an end of the shaft of the hinge.
摘要:
An information presentation apparatus includes an information organization structure editing unit, a search condition creating unit, an information collection unit, and a collection result joining unit. The editing unit prompts a user to enter plural terms and one or more relations among said terms and store them as an information organization structure. The search condition creating unit creates a search condition of information from the terms and the relations among the terms stored in the information organization structure. The information collection unit searches information storage by using the created search condition and collect location information of the data meeting the search condition. The collection result joining unit visually joins the terms and the relations among the terms stored in the information organization structure with the location information of the searched data and displays the joined result.
摘要:
A communication circuit system of an IC card etc. including a voltage drop circuit having a complementary type transistor circuit comprising a p-channel and an n-channel transistor connected together, the circuit being connected to a power source voltage and generating a voltage corresponding to the sum of the threshold voltages of the p-channel transistor and n-channel transistor and supplying the same to a load circuit; an oscillation circuit having a complementary MOS inverter, a capacitor connected to the input side of the complementary MOS inverter, and resistance elements connected between the input and output of the complementary MOS inverter; and a wave detection circuit having a first and second MOS transistors with drains and gates connected to each other and a current source, nodes between the drains and the gates of the first and second MOS transistors being connected to the current source, the gate of the first MOS transistor being connected to a signal input line, and the current capacity of the second MOS transistor being set larger than the current capacity of the first MOS transistor.
摘要:
A quantizing number is determined using multiple stages of code amount estimating circuits. Thus, an optimum quantizing number may be selected from among a number of quantizing numbers which is not limited to the number of code amount estimating circuits. The optimum quantizing number is used to quantize a set of blocks of orthogonally transformed image data. The quantized data are encoded using a variable length code. The optimum quantizing number is the one which results in the greatest amount of data that is within a predetermined threshold, permitting an amount of encoded data to be recorded on a magnetic tape in a fixed format.
摘要:
In a digital-to-analog converter for converting a received digital signal having N bits and a sampling frequency fs to an analog signal; digital interpolation filter receives the digital signal and generates a modified digital signal having a number of bits less than N and a sampling frequency greater than fs, pulse width modulator receives the modified digital signal and generates a pulse signal having pulse widths which correspond to the modified digital signal, output buffer having a complementary metal oxide semiconductor (CMOS) inverter circuit including P channel and N channel transistors having respective resistance values receives the pulse signal and low-pass filter receives the output signal from the output buffer, wherein the digital interpolation filter, the pulse width modulator and the output buffer are formed in an integrated circuit, and when the transistors are conductive the resistance values of the P channel and N channel transistors are set equal to each other by adjusting a voltage applied to the integrated circuit substrate so as to improve the signal-to-noise ratio of the produced analog signal.
摘要:
An analog-to-digital converter for converting an analog input voltage signal to a digital output voltage signal of m upper bits and n lower bits includes at least (2.sup.m+n -1) resistors connected in a series circuit to a voltage source for establishing respective reference voltages; at least (2.sup.m -1) upper bit voltage comparators for generating outputs indictive of the m upper bits, and having first and second inputs, the analog input voltage being applied to the first inputs and the second inputs being connected to the series circuit at respective intervals defining groups of the resistors; an upper bit encoder receiving the outputs of the upper bit voltage comparators and generating a switch control signal and a digital output voltage signal of m upper bits; at least (2.sup.n -1) lower bit voltage comparators for generating outputs indicative of the n lower bits, and having first and second inputs, the analog input voltage signal being applied also to the first inputs of the lower bit voltage comparators; switch elements associated with each of the groups and being responsive to the switch control signal for selectively connecting the second inputs of the lower bit comparators to respective resistors in the associated resistor groups; and a lower bit encoder receiving the outputs of the lower bit voltage comparators and generating a digital output voltage signal of n lower bits.