摘要:
A digital conversion system for a color video signal comprising a system which selectively converts an analog composite color video signal and analog primary color video signals to digital signals includes: a matrix circuit (17) which forms a luminance signal and first and second color difference signals from the input analog primary color video signals; and a switching circuit (18) which converts the first and second color difference signals to a sequential color difference signal. A switch (28) selects the luminance signal from the matrix circuit (17) or the input NTSC analog composite color video signal. A first analog to digital converter (41) receives an output from the switch (28); and a second analog to digital converter (42) receives the sequential color difference signal. A digital composite color video signal or a digital luminance signal is obtained from the first analog to digital converter (41), and a digital line sequential color difference signal is obtained from the second analog to digital converter (42). The line sequential chrominance signal can be digitized by a single inexpensive A/D converter which has a slow processing speed, so as to produce an inexpensive digital conversion system which is small.
摘要:
The present invention comprises a signal generator which uses digital memory for generating a digital signal which has a value which periodically varies with a memory having 2.sup.n addresses in each of which data for one period of the digital signal is stored and includes a circuit for multiplying a digital control input having a variable value by a predetermined coefficient and includes an integrator for integrating the control input multiplied by said coefficient at every predetermined clock signal so as to produce an address signal for said memory and said address signal varying step by step at a predetermined number of intervals corresponding to said digital control input.
摘要:
A sheet for water base ink recording comprises a backing substrate including a surface layer obtained by ultraviolet or radiation curing of a composition composed mainly of an ultraviolet or radiation curing type resin starting from a natural high-molecular substance and, optionally, containing an ultraviolet or radiation curing type antistatic agent.
摘要:
A visualization device is communicable with one or a plurality of host servers for hosting a virtual system, and includes an information acquisition unit for collecting configuration information on the virtual system and the host server, a storage unit for storing the configuration information therein, and a drawing unit for expressing a virtual machine and a virtual network configuring the virtual system with different axes based on the configuration information stored in the storage unit, expressing a connection relationship between a virtual machine and a virtual network by linking the lines extending from the respective axes, and grouping virtual machines in units of server on which the virtual machines operate thereby to generate drawing information for expressing the configuration of the virtual system and the host server.
摘要:
Provided is a system in which two or more clients, each including an application program that transmits a network access request, and a server are able to communicate, wherein at least one client includes first control means for controlling the access request transmitted to the server, based on a security level assigned to the application program, and the server includes second control means for determining whether the first control means has been introduced to the client that has transmitted the access request, authorizing the access request when the determination result is positive, and controlling the access request based on a security level assigned to an access target when the determination result is negative.
摘要:
In a net boot type thin client system, bottle necks concentrate on specific steps in a previously downloading method and an on-demand downloading method so as to hinder high-speed operation. Specifically, a previously file acquiring section for acquiring a file before the OS operates, an on-demand file acquiring section for acquiring a file while the OS operates, and a file determining section for determining whether or not a file is used in a high frequency. A high use-frequency file is downloaded before an OS operates and a low use-frequency file is downloaded while the OS operates.
摘要:
An electricity storage device including a positive electrode 31, a negative electrode 32, and an electrolytic solution 29 located between the positive electrode and the negative electrode. At least one of the positive electrode 31 and the negative electrode 32 contains an electricity storage material containing a polymerization product having a tetrachalcogenofulvalene structure in a repeat unit of a main chain.
摘要:
At the time of a maintenance work, a user computing machine does not give user data to a person (maintainer) who carries out maintenance and does not accept operations and data that are not relevant to the maintenance work so as to prevent the leakage of user data. Specifically, a user computing machine includes: a user data determination section determining whether a file of a VM of a computing machine used by a user is data created by the user, and a VM copy section, creating a copy of a VM which does not include data created by the user by calling the user data determination section. The maintenance is performed by supplying the VM which does not include data created by the user to a computing machine of the maintainer.
摘要:
Provided are first monitoring unit 106a for monitoring whether service provision unit 102 has been called by an application, second monitoring unit 107a for monitoring whether a network access request is sent to a network, first access control unit 106b for controlling the network access request of the call detected by the first monitoring unit 106a, based on a security level assigned to the application program that has called the service provision unit, and second access control unit 107b for determining whether the first access control unit 106b has already performed access control on the network access request detected to have been sent by the second monitoring unit 107a, and, if the access control has been performed, controlling the network access request based on a security level assigned to the application program that has sent this network access request.
摘要:
To provide a flexible polyurethane foam which is excellent in low resiliency and durability without using a plasticizer and which shows little change in hardness against a change in temperature and at the same time, has high air flow.A process for producing a flexible polyurethane foam, which comprises reacting a polyol mixture comprising the following polyol (A), the following polyol (B) and the following monool (D) with a polyisocyanate compound in the presence of a blowing agent and a foam stabilizer, at an isocyanate index of at least 90, wherein: Polyol (A) is a polyether polyol having an average of from 2 to 3 hydroxyl groups, a hydroxyl value of from 10 to 60 mgKOH/g and an oxyethylene group content of from 0 to 30 mass %, obtained by ring-opening polymerization of an alkylene oxide to an initiator using a phosphazene compound, a Lewis acid compound or an alkali metal compound catalyst; Polyol (B) is a polyether polyol having an average of from 2 to 3 hydroxyl groups and a hydroxyl value of from 70 to 250 mgKOH/g; and Monool (D) is a polyether monool having a hydroxyl value of from 10 to 200 mgKOH/g.