摘要:
An object of the invention is to arrange so that the digital signal transmission between specific equipments connected with each other by the transmission line of a fixed standard can be performed securely and satisfactorily.When a digital signal destination is caused to receive a fixed digital signal sent out of a digital signal sender, the digital signal destination acquires at the request of the destination from the digital signal sender data on modes in which the digital signal sender is able to send out the digital signal, and a transmission mode of the digital signal is caused to be set by a command based on the acquired mode data from the digital signal destination. Moreover, when a digital signal destination is caused to receive a fixed digital signal sent out of a digital signal sender, a flag is added to the digital signal sent out of the digital signal sender, which indicates that the transmission rate is being adjusted based on the command from the digital signal destination.
摘要:
An electronic apparatus, having functions on which use limitations can be imposed, in which a variety of functions are loaded on the electronic apparatus by hardware circuitry or by computer programs. Use of a certain function(s) is limited by setting a function limiting flag to “1”, provided that an other function(s) are usable within a period of a preset number of days of possible test use. An application is made from the apparatus to a key issuing source for purchasing usable functions. The key issuing source then issues a limitation removing key. The limitation removing key may be acquired from the key issuing source by a mobile phone terminal and transmitted to the apparatus by infrared ray communication. The apparatus rewrites the function limiting flag by this limitation removing key. If the number of days of actual test use has reached the number of days of possible test use, the CPU of the apparatus does not carry out the function(s) the function limiting flag of which is “1”.
摘要:
A signal processing circuit and apparatus is disclosed which can prevent illegal utilization of content data with a higher degree of certainty. A hardware module controls utilization of content data based on right information of the content data. A nonvolatile memory stores a first check value for checking the compatibility of an apparatus identifier transferred from an apparatus in which the hardware module is incorporated and a second check value for checking the compatibility of the right information of the content data. The hardware module checks the compatibility of the transferred apparatus identifier based on the apparatus identifier and the first check value, checks the compatibility of the right information in response to the right information and the second check value and controls the utilization of the content data based on the right information in response to results of the checks.
摘要:
An electronic apparatus, having functions on which use limitations can be imposed, in which a variety of functions are loaded on the electronic apparatus by hardware circuitry or by computer programs. Use of a certain function(s) is limited by setting a function limiting flag to “1”, provided that an other function(s) are usable within a period of a preset number of days of possible test use. An application is made from the apparatus to a key issuing source for purchasing usable functions. The key issuing source then issues a limitation removing key. The limitation removing key may be acquired from the key issuing source by a mobile phone terminal and transmitted to the apparatus by infrared ray communication. The apparatus rewrites the function limiting flag by this limitation removing key. If the number of days of actual test use has reached the number of days of possible test use, the CPU of the apparatus does not carry out the function(s) the function limiting flag of which is “1”.
摘要:
In a server serving as an information distribution apparatus and an information communication terminal, contents are managed by using content identifiers (content IDs) managed as IDs conforming to a rule of uniformity. Particularly, in the information communication terminal, a content ripped from a recording medium such as a CD, and stored in a storage element, such as a hard disk drive, is also managed by using a content identifier acquired from the information distribution apparatus. In this way, contents stored in the storage element can be managed by using content IDs each managed as an ID common to the information communication terminal and the information distribution apparatus. In communication between the information communication terminal and the information distribution apparatus, a content identifier conforming to a rule of uniformity is used for identifying a content to which the content identifier is assigned, so that the terminal is capable of downloading the content as well as acquiring additional information relevant to the content from the apparatus.
摘要:
A personal computer that is a controller transmits a reserve request for reserving a remote control. An MD recorder/player that is a target sets a reserve mode corresponding to the reserve request. In other words, the MD recorder/player prohibits another controller from performing a remote control by another controller. In addition, the MD recorder/player prohibits local key operations other than reproduction keys, a stop key, and an eject key. Thus, only the personal computer can perform an operation control for updating for example TOC information of the MD recorder/player. Thus, a mismatch of TOC information due to a remote control of another controller and a local key operation can be prevented from taking place between the personal computer and the MD recorder/player.
摘要:
Disclosed herein are a controller device, a communication system and a controlling method for transmitting commands for designating two modes used in a setup comprising a controller device and a plurality of target devices reserved by the controller device, the devices being interconnected by a data bus for transmitting data in a predetermined communication format, one of the two modes allowing the target devices to communicate with one another, the other mode inhibiting the reserved target devices from thus communicating. Also disclosed are a communication system and a controlling method for varying between such two modes a standby time that must elapse before a command can be accepted following a bus reset, one mode permitting communication between the reserved target devices, the other mode inhibiting such intercommunication.
摘要:
A controlling apparatus capable of synchronized power supply control over a plurality of electronic devices which are connected to the controlling apparatus via a bus pursuant to a predetermined communication format and which are fabricated by a plurality of venders including those different from the vender of the controlling apparatus. If any one of the electronic devices is selected regardless of its vender as an input by the controlling apparatus and is judged to have a link only with the controlling apparatus, the electronic device in question is switched on or off synchronously by the controlling apparatus.
摘要:
The invention provides a transmission apparatus, a recording apparatus, a transmission and reception apparatus, a transmission method, a recording method and a transmission and reception method by which data can be communicated between different apparatus over a single data bus in accordance with a first communication method wherein data can be transmitted and/or received periodically and a second communication method wherein data can be transmitted and/or received asynchronously.
摘要:
A dubbing system in which a plurality of music programs are compressed in a predetermined manner and stored in a server and in which a client selects a desired one of the music programs which is transferred in a compressed state to the client for dubbing on a recording medium. The dubbing system is subservient to the selection of musical programs by the client since a portion of the compressed music program can be expanded and monitored on the client side so that the client can check to see that the music program is the desired one. Moreover, the audio program to be dubbed next can be monitored.