摘要:
The present invention provides a process for producing a variety of unsaturated carbamic acid derivatives from corresponding unsaturated carbamates by substitution reaction. The present invention provides a process for producing unsaturated carbamic acid derivatives, comprising reacting an unsaturated carbamate represented by ##STR1## wherein R represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms, R.sup.1 represents a residue of an alcohol from which an OH group is removed,with an alcohol, a primary or secondary amine or an oxime at a temperature of 80.degree. to 150.degree. C. to substitute the --OR.sup.1 group in the formula (A).
摘要:
Disclosed is a low-temperature curable composition comprising:(a) an acrylic polymer having a molecular weight of 2,000 to 10,000, which has an acyl carbamate group, and(b) a lactone-modified polyol having a molecular weight of 200 to 20,000 in such an amount that a molar ratio of the acyl carbamate group to a hydroxyl group becomes 0.5 to 2.0.The low-temperature curable composition is useful for a binder of a paint for use in plastics.
摘要:
Benzylpyridinium or benzylammonium salts of a benzenesulfonate anion are useful as a proton-donating curing catalyst ion a resinous system capable of curing in the presence of such a catalyst. The catalyst is characterized by its heat-latent nature and thus does not impair the storage stability of the resinous system at an ambient temperature.
摘要:
A display device for a Compact Disc player includes a Q-channel information detection circuit, a specific information identifying circuit, an information sorting circuit, a character code train output circuit and a display. The Q-channel information detection circuit detects Q-channel information subcoding from a signal recorded on a Compact Disc reproduced by the Compact Disc player. The specific information identifying circuit identifies specific information by means of identifying code imparted thereto. The information sorting circuit sorts the specific information provided from the specific information identifying circuit into character code information and editing information. The character code train output circuit edits the character code information in accordance with the editing information as character information and the display indicates the character information concerning contents of the Compact Disc such as the title, name of the composer or performer. The display device also includes an image information processing circuit which detects image information from Q and R to W-channels on the Compact Disc and displays mixed information of character information and image information.
摘要:
Transfer control means (41) transfers part of held digital contents in an internal storage device (51) to a network storage device (57). List information presentation means (42) returns list information which makes the digital contents stored in the internal storage device (51) and the network storage device (57) as the held digital contents in response to a list presentation request for the held digital contents. Upon reception of a data transmission request, search means (43) searches where the held digital contents are currently stored. If the result of the search shows the network storage device (57), content data transmission processing means (44) allows the stream-delivery of the data from the network storage device (57) to a network player (56). There is provided a server device for media (40) capable of maintaining the convenience of playback in a network player, while properly dealing with the large total size of held digital contents.
摘要:
A display device for a Compact Disc player includes a Q-channel information detection circuit, a specific information identifying circuit, an information sorting circuit, a character code train output circuit and a display. The Q-channel information detection circuit detects Q-channel information subcoding from a signal recorded on a Compact Disc reproduced by the Compact Disc player. The specific information identifying circuit identifies specific information by means of identifying code imparted thereto. The information sorting circuit sorts the specific information provided from the specific information identifying circuit into character code information and editing information. The character code train output circuit edits the character code information in accordance with the editing information as character information and the display indicates the character information concerning contents of the Compact Disc such as the title, name of the composer or performer. The display device also includes an image information processing circuit which detects image information from Q and R to W-channels on the Compact Disc and displays mixed information of character information and image information.
摘要:
Voltage comparators for actuating a camera shutter and a low-light indicating lamp respectively have inputs connected to junctions between photocells and resistors so as to be controlled in response to the light level. The voltage comparator for the low-light indicator energizes the indicator when the light level is below a low-light value from the time the shutter release button is partially depressed until the time the shutter is closed after the exposure. The voltage comparator for the shutter produces a shutter opening signal to open the shutter for the required length of time based on the light level. The output of the voltage comparator for the shutter is connected through a diode to the input of the voltage comparator for the low-light indicator so that the low light indicator is deenergized when the shutter is closed.
摘要:
Transfer control means (41) transfers part of held digital contents in an internal storage device (51) to a network storage device (57). List information presentation means (42) returns list information which makes the digital contents stored in the internal storage device (51) and the network storage device (57) as the held digital contents in response to a list presentation request for the held digital contents. Upon reception of a data transmission request, search means (43) searches where the held digital contents are currently stored. If the result of the search shows the network storage device (57), content data transmission processing means (44) allows the stream-delivery of the data from the network storage device (57) to a network player (56). There is provided a server device for media (40) capable of maintaining the convenience of playback in a network player, while properly dealing with the large total size of held digital contents.
摘要:
In a disc recording medium such as a Compact Disc capable of preventing occurrence of a burst error due to a scratch or a black spot on a disc in which the same data is repeatedly recorded for error correction, at least one adjusting section is inserted in an interval between repeatedly recorded same data. The length of the adjusting section is set to a value at which the same frames of at least two same data are not located in parallel to each other. Occurrence of a scratch will not prevent reading of the frame in at least one of the data.
摘要:
An address counter sequentially addresses locations in a shift register or random access memory in which a waveform is stored in digital form to display the waveform on a cathode ray tube. Several magnification ranges are provided so that a selected portion of the waveform may be viewed in magnified form. A manually controllable position counter selects the portion of the magnified waveform for viewing in such a manner that the center of the portion will remain in the center of the cathode ray tube when the system is switched between magnification ranges. The position counter is an up-down counter which is driven by a same clock pulse generator which drives the address counter. A variable frequency divider is provided between the clock pulse generator and the position counter in such a manner that the position counter is driven at a convenient speed regardless of the magnification range. Two manually controllable mark counters similar to the location counter are also driven from the clock pulse generator, and indicate memory locations for which respective markers are to be displayed on the cathode ray tube. The contents of the memory location corresponding to the first of the markers is displayed in digital form, and the time difference between the markers is also measured and displayed in digital form. Variable frequency dividers provide magnitude and time scaling for the digital displays, and also ensure movement of the markers on the cathode ray tube at a convenient speed regardless of the magnification range. The frequency dividers are switched so that the address and mark counters are driven at low speed when the selected portion for magnification and marks are addressed and at high speed at other times.