摘要:
A focus servo control system is a system for selectively applying a light beam to a disk on which data is recorded on plurally layered recording surfaces and setting the focus position of the light beam on a selected recording surface of the two-layered recording surfaces based on a signal read from reflected light from the selected recording surface of the plurally layered recording surfaces of the disk and includes a focus error detector for detecting a positional difference between the focus position of the light beam and the selected recording surface of the plurally layered recording surfaces, a sample-hold circuit for sampling and holding an output of the focus error detector, a focus position correcting circuit for correcting the focus position of the light beam based on one of the output of the focus error detector and an output of the sample-hold circuit, a data signal level detector for detecting the signal level relating to data read out from the disk, a comparator for comparing a signal level detected by the data signal level detector with a predetermined level to output the result of comparison, and a selector for selecting one of the output of the focus error detector and the output of the sample-hold circuit as an input signal of the focus position correcting circuit based on the output of the comparator.
摘要:
A method for facilitating communication between parent telephones and child telephones in a cordless telephone system. The method includes steps of dividing a plurality of channels into groups and assigning each parent telephone to one of the groups. When a child telephone is registered with one of the parent telephones, the child telephone may scan only the channels in the group assigned to the parent telephone with which the child telephone is registered, rather than the entire plurality of channels in the cordless telephone system.
摘要:
A still picture signal editing or processing apparatus having a still picture signal source for generating a still picture signal, an analog-to-digital converter for converting the still picture signal into a digitized still picture signal, first and second main field memories, an auxiliary field memory, a signal processer for processing a still picture signal, a display for displaying a still picture, a selector for supplying a signal selectively read out from the first and second main field memories to the display, and a memory controller for controlling read and write operations of the first and second main field memories and auxiliary field memory, thereby a digitized still picture signal from the analog-to-digital converter is supplied to the first main field memory, the digitized still picture signal is read out from the first main field memory, compressed by 1/n in data amount and is separated into first and second compressed signals by the signal processer, the first and second compressed signals are supplied to the second main field memory and auxiliary field memory, respectively and written in portions of the second main field memory and the auxiliary field memory, respectively, the second compressed signal is read out from the auxiliary field memory and supplied to the first main field memory, and the first and second compressed signals are read out from the second and first main field memories, are combined and supplied to the display.
摘要:
A method and apparatus for retrieving picture information stored in an information center and subsequently storing the picture information in a user terminal by registering in the information center retrieval control information having picture numbers used in the retrieving operation, requesting the retrieval control information from the information center through a communication line, receiving and storing the retrieval control information in the user terminal, analyzing the retrieval control information and extracting the picture numbers contained in the retrieval control information, transmitting the picture numbers to the information center through the communication line to request the picture information corresponding to the picture numbers, and receiving and storing the picture information in the user terminal, wherein the picture retrieval operations can be achieved in an off-line mode by using the stored picture information and the stored retrieval control information received during an on-line mode.
摘要:
An apparatus for scrolling the display of images obtained from a plurality of data units, each having pattern signals representing a plurality of horizontal lines and a corresponding color signal includes a video display having a plurality of horizontal display lines, a first memory for storing the pattern signals formed with first addresses corresponding to the plurality of horizontal display lines and a first buffer area for temporarily storing received pattern signals, a second memory for storing the color signal formed with second addresses corresponding to the numbers of the data units and a second buffer area for temporarily storing a received color signal, the pattern signals and a corresponding color signal being stored in the first and second buffer areas, respectively. A read out system operates so that the first memory, including the first buffer area, is read out by accessing the first addresses in a pre-determined order and so that the second memory, including the second buffer area, is read out by accessing the second addresses in a pre-determined order. Also provided is a circuit for transferring the pattern signal of a horizontal line stored in the first buffer area to a corresponding address of the first memory and for transferring a corresponding color signal stored in the second buffer area to a corresponding address of the second memory, and a circuit for supplying the pattern signals and the corresponding color signal to the display tube.
摘要:
A system for displaying text data includes a plural page memory and a flag memory, in which flags are set to identify the desired page data for display, and a flag controller and read-out controller operate so that when an erase code is included in the data the display is blanked but when the data includes an image signal a desired text page is displayed.
摘要:
A color information display apparatus includes a common memory of an integrated circuit configuration for storing both pattern data and color data describing an attribute of the corresponding pattern data to be displayed on a CRT, the common memory including a first address area for the pattern data and a second, different address area for the color data, a circuit for generating address signals for the common memories in response to the scanning position of the electron beam on the screen of the CRT, a parallel-serial converting circuit for converting parallel pattern data in the common memory to serial data, a first latch circuit for latching the color data in the common memory to produce an output color signal, a circuit for generating a color information signal from the serial data from the parallel-serial converting circuit and the output signal from the first latch circuit, an address selector connected between the address signal generating circuit and the common memory, the first address area and the second address area of the common memory being addressed alternatively by the address selector, and a second latch circuit connected between the common memory and the serial-parallel converting circuit for latching the pattern data supplied to the latter circuit.
摘要:
In an information-processing system shown in FIG. 1, a server (106) for delivering remote-operation control information in accordance with an audio/video instrument (110) and an information-processing apparatus (103) with a remote-operation screen display function for remote-controlling the audio/video instrument (110) based on control information acquired from this server (106) are connected to each other through the Internet (105) etc. The information-processing apparatus (103) makes a request to the server (106) to deliver the remote-operation control information in accordance with this audio/video instrument (110) and, based on the control information delivered from the server (106) owing to this delivery request, performs display processing of a remote-operation screen and, based on remote-operation information input by operations on the remote-operation screen, remote-controls the audio/video instrument (110).
摘要:
In an information-processing system shown in FIG. 1, a server (106) for delivering remote-operation control information in accordance with an audio/video instrument (110) and an information-processing apparatus (103) with a remote-operation screen display function for remote-controlling the audio/video instrument (110) based on control information acquired from this server (106) are connected to each other through the Internet (105) etc. The information-processing apparatus (103) makes a request to the server (106) to deliver the remote-operation control information in accordance with this audio/video instrument (110) and, based on the control information delivered from the server (106) owing to this delivery request, performs display processing of a remote-operation screen and, based on remote-operation information input by operations on the remote-operation screen, remote-controls the audio/video instrument (110).
摘要:
In an information-processing system shown in FIG. 1, a server (106) for delivering remote-operation control information in accordance with an audio/video instrument (110) and an information-processing apparatus (103) with a remote-operation screen display function for remote-controlling the audio/video instrument (110) based on control information acquired from this server (106) are connected to each other through the Internet (105) etc. The information-processing apparatus (103) makes a request to the server (106) to deliver the remote-operation control information in accordance with this audio/video instrument (110) and, based on the control information delivered from the server (106) owing to this delivery request, performs display processing of a remote-operation screen and, based on remote-operation information input by operations on the remote-operation screen, remote-controls the audio/video instrument (110).