摘要:
When there is an error in setting of a companding law of an encoder or a decoder, there is a problem of an error in judgment although it should be originally judged that the continuity of the testing channel does not exist. Therefore, a channel check test system includes a transmitting side DCME for inserting a nonlinear quantized input test pattern into a channel to be tested, and a receiving side DCME. The receiving side DCME includes an adder for adding an offset value to an output value of a linear converting section, a sign extracting section for extracting a sign from an output signal of the adder, a delay unit for delaying the extracted sign, an exclusive OR arithmetic unit for performing an exclusive OR operation of the extracted sign and an output signal of the delay unit, a counter for counting the number of times of conformity in which an output value of the exclusive OR arithmetic unit is in conformity with a predetermined value, and a comparator for comparing a counted value of the counter and a threshold value and outputting judged results. Existence or nonexistence of the continuity of the channel to be tested can be checked including an error in setting of the PCM companding law in one of the transmitting side DCME and the receiving side DCME.
摘要:
When there is an error in setting of a companding law of an encoder or a decoder, there is a problem of an error in judgment although it should be originally judged that the continuity of the testing channel does not exist. Therefore, a channel check test system includes a transmitting side DCME for inserting a nonlinear quantized input test pattern into a channel to be tested, and a receiving side DCME. The receiving side DCME includes an adder for adding an offset value to an output value of a linear converting section, a sign extracting section for extracting a sign from an output signal of the adder, a delay unit for delaying the extracted sign, an exclusive OR arithmetic unit for performing an exclusive OR operation of the extracted sign and an output signal of the delay unit, a counter for counting the number of times of conformity in which an output value of the exclusive OR arithmetic unit is in conformity with a predetermined value, and a comparator for comparing a counted value of the counter and a threshold value and outputting judged results. Existence or nonexistence of the continuity of the channel to be tested can be checked including an error in setting of the PCM companding law in one of the transmitting side DCME and the receiving side DCME.
摘要:
A reset signal generating part outputs reset signals RV and RD to a signal discriminating part, based on an output from a 2100 Hz detecting part which detects whether or not a tone of 2100 Hz exists in an input signal. When the 2100 Hz tone is detected, the signal discriminating part firstly resets a discrimination state at "speech" and secondly sets the discrimination state at "data" based on the reset signal. Therefore, a signal discrimination apparatus, wherein it is possible to reset the discrimination state at "speech" at the beginning of a facsimile call even when no call control information is received, can be provided.
摘要:
A packet communication system includes a communication control apparatus 8 for searching for an IP address corresponding to a destination telephone number when receiving a connection request including the destination telephone number from a VoIP terminal, and a multiplexing control apparatus 9 for identifying both a multiplexing transmission apparatus 11 or 10 which manages a VoIP terminal associated with the address searched for by the communication control apparatus 8, and a multiplexing transmission apparatus 10 or 11 which manages the VoIP terminal which is the transmission source of the connection request, and for notifying each of both the identified multiplexing transmission apparatus 10 and 11 of the address of the multiplexing transmission apparatus 11 or 10 on the other end of connection and the address of the VoIP terminal.
摘要:
A monitor server apparatus 102 in accordance with the present invention includes: a UI presenting means 304 for presenting a UI for displaying information and for receiving an input; a display data generating means 303 for generating display data to be displayed on the UI; an item list receiving means 301 for receiving a list of items listed each of which is described as metadata; an item list storing means 302 for storing the item list; an input key receiving means 305 for receiving a key input; and an identification information transmitting means 306 for transmitting identification information making it possible to identify each of the items included in the item list uniquely.
摘要:
In establishing an audio one link connection wherein an audio signal is not encoded/decoded in a relay station, loud noises may be produced if the states of two audio tandem relay devices which make a pair during relay are changed from a normal connection state to a relay connection state at different times. In order to solve this problem, comfort noise generators are provided. In detail, when a first pattern signal is detected while a relay call is connected via a relay exchange, switches are switched to be connected at a contact point 1, and a switch is at a contact point 2. Upon detection of a second pattern signal, the switches are connected at the contact points 2, while the switches are connected at the contact points 2. With this arrangement, outputs from the comfort noise generators are selected and outputted during a period from first pattern signal detection to second pattern signal detection, during which the states of the two devices of a pair are different. As a result, occurrence of loud noises is prevented.
摘要:
A recording reservation common share system includes a recording schedule sharing apparatus 1A which makes a request for recording schedule information, and which acquires and checks recording schedule information provided thereto, and recording schedule sharing apparatuses 1B and 1C each of which receive a request for recording schedule information from the recording schedule sharing apparatus 1A, and provides the recording schedule information held thereby to the recording schedule sharing apparatus 1A.
摘要:
A metadata storing/receiving means 206 stores metadata acquired from a metadata providing terminal by using a metadata acquisition request. A filtering means 209 selects metadata stored in the metadata storage means 206 by using at least of a degree of preference and a degree of affinity.
摘要:
A client apparatus in accordance with the present invention includes a contents list request transmitting means 401 for transmitting a request of a media server apparatus 101 to transmit a contents list which is a list of metadata of contents, a contents list receiving means 402 for receiving the contents list from the media server apparatus 101, an item list storing means 403 for storing the contents list and an item list having listed items each of which is described as metadata, an item list transmitting means 404 for transmitting the item list to a monitor server apparatus 102, a key input means 405 for receiving a key input, an input key transmitting means 406 for transmitting the key input to the monitor server apparatus 102, and an identification information receiving means 407 for receiving identification information making it possible to uniquely identify each item included in the item list.
摘要:
A client apparatus in accordance with the present invention includes a contents list request transmitting means 401 for transmitting a request of a media server apparatus 101 to transmit a contents list which is a list of metadata of contents, a contents list receiving means 402 for receiving the contents list from the media server apparatus 101, an item list storing means 403 for storing the contents list and an item list having listed items each of which is described as metadata, an item list transmitting means 404 for transmitting the item list to a monitor server apparatus 102, a key input means 405 for receiving a key input, an input key transmitting means 406 for transmitting the key input to the monitor server apparatus 102, and an identification information receiving means 407 for receiving identification information making it possible to uniquely identify each item included in the item list.