DE2302978A1 - DIGITAL DISPLAYING WRISTWATCH OD. DGL - Google Patents

Description

Dipl.-Ing. Heinz Lesser, Poientur.woit D -8 Munich 81, Cosimastroße 81 · Telephone: (0811) 95 38 2α

Kabushiki Kaisha Suwa Seikosha L 9961 / Pl / ho. Tokyo / "Japan

Digitally displaying wristwatch or the like.

The invention relates to a digitally displaying wrist watch or the like with a crystal oscillator, Counting and evaluation circuits, a number of display devices and a number of switches for setting and / or resetting of the display devices.

With clocks of the type mentioned above, the problem no longer exists with regard to the space available in the accommodation of the "clockwork", because this is done by very small electronic circuits is replaced. Rather, it is difficult to accommodate the display devices and / or the arrangement enough switches to operate the clock, for resetting and setting the time display.

For example, correcting the time display of a digitally displaying clock can no longer simply be done a pulling and turning of a single winding crown of a conventional watch are carried out, for this purpose are rather a number of switches are provided, which are usually designed as pushbutton switches. The easier and as far as the operation of the clock should be more practical, the more the number of such switches increases. Considered For example, if you want to correct a time display, this can easily be done if for column the display, i.e. one switch each for the hours, ten minutes, minutes, ΙΟ seconds and seconds

309830/1122

Dipl.-Ing. Heinz lessei, Potentanwalt D -8 Munich 81, Cosi'maitrcße 81 · Telephone: (0811) 95 3S

is provided. If there is only little space available, as is the case with a wristwatch, it becomes difficult six switches to be provided for this purpose only.

If the watch is to fulfill other functions beyond the time display, such as that of a timer, it is necessary one more switches for entering a period of time that begins or ends at a certain point in time, or a time value at which a certain period of time begins or ends. In this case the difficulty becomes the arrangement of the necessary switches on a wristwatch is practically insurmountable.

Such a timer, which is additionally provided in addition to the time display, also requires display devices to display the to make the aforementioned time entries recognizable. But if you want that in the size range of a wristwatch Time display devices increase their number, so the reliability of the display or the reading security is severely impaired.

With the present invention, a clock of the type mentioned is to be made available, which has the Time display also includes other functions such as that of a timer and yet with the as part of a Wristwatch given space.

According to the invention, this is achieved in that a memory circuit arrangement is used to form a timer device is provided that with the help of a switching device either to the display devices and / or at least one of the switches can be connected.

By the switching device provided according to the invention the display devices that are required for the normal time display can therefore initially be used for-the timer-] Facility to be exploited. By switching it is possible to store a time value in the timer,

309830/1122

Dipl.-Ir.g. Heinz Lesser, patent attorney D -8 Munich 81, Cosimastroße 81 · Telephone: (0811) 95 38

which is recognizable with the help of the time display devices. Due to the double use of the time display devices so you save corresponding space.

On the other hand, it is possible to use the switchover device for resetting and setting the normal time display provided switches, or just one or more of them, for the purposes of the timer device to switch. So it is possible to use the same switches that are used for the time display correction are required to key in the time values to be stored in the timer.

In a particularly preferred embodiment, both the display devices and one or more of the switches are switched between the normal time display and the timer function. It therefore becomes practical both in terms of the display devices and in terms of the switches does not take up more space than for a normal time display without auxiliary functions.

The functions mentioned in connection with the timer device are only examples. Then let yourself for example, realize the functions of an alarm clock, a stopwatch and the like.

In a preferred embodiment, the switching device has a switching contact, which acts as a slide switch can be formed. The memory circuit arrangement preferably has memory circuits for the minute and for the hour value.

Further features of the invention emerge from an exemplary embodiment shown in the drawing. Show it:

Fig. 1 is a Mussere view of an embodiment a wristwatch equipped according to the invention;

309830/1122

Dipl.-Ing. Heinz Lesser, patent attorney D -8 Munich 81, Cosimastraße 81 · Telephone: (0811) 95 38

FIG. 2 shows a possible block diagram for the exemplary embodiment according to FIG. 1.

The embodiment shown in Fig. Γ according to In addition to the normal time display, the invention comprises a timer device. A push button switch 11 is used the correction of the hour display, a similar switch 12 is used to correct the minute display, with the help a push-button switch 14 can be reset, while the push-button switch 15 is on Start and stop signal can be triggered. A changeover switch 13 is designed as a slide switch and is used to choose between the functions of the normal time display on the one hand and the timer on the other. The time display devices, which are used twice, are located on a display field that is to be kept correspondingly small 16; Liquid crystals or light-emitting diodes serve as time display elements. The watch case 17 on the Bracelet 18 shows that you can get by with relatively small dimensions.

According to the block diagram according to FIG. 2, a quartz oscillator transmits as a time standard a stabilized time signal to a counter circuit 2, which forms by counting Counter circuit 2 a second signal from the stabilized time signal. Another signal is formed from the second signal Counter circuit 3 a minute signal, from which a counter circuit 4 forms an hourly signal, which finally is again divided by 24 by a further counter circuit 5. In addition, the counter circuits give 3, 4 and 5 binary coded decimal signals (BCD codes) for the hours, minutes and Second signals to a selection circuit 9 and a coincidence circuit 8. On the other hand, the selection circuit receives 9 and the coincidence circuit 8 furthermore binary-encrypted decimal signals from memory circuits

309830/1122

Dipl.-Ing. Heinz tesssf, patent attorney D -8 Munich 81, Cosimasiraße 81 · Telephone: (0311) 95 38

6 and 7, in which a predetermined time period that begins or ends at a certain point in time or a predetermined time at which a certain period of time begins or ends is stored in the sense of the timer function. The circuits 9 and 8 can optionally be switched to one of the two groups of binary encrypted decimal signals with the help of the switch S _{3, they then send the respective binary encrypted decimal signal to a distribution circuit 10, which converts the coded signals into a 7-segment signal} . This 7-segment signal is then fed to a display field (not shown).

The coincidence circuit 8 has the task of emitting an output signal when the two coded supplied to it Signals match. This output signal is via an amplifier A of an alarm device SP, such as a Loudspeaker, a buzzer or the like., Supplied.

_{Furthermore, the selection circuit 9 is influenced by the switch S- to toggle switches S 1} and S "simultaneously with the selection of the display of a time correction or an input time of the timer function, so that they serve as a time correction switch and as an input switch. In other words, if the switch S _{3 is switched} to the switch position for the timer function, the display devices show the input times of the timer function, and the switches S ₁ and S 2 also function as time input switches; on the other hand, if the switch S _{3 is} reset to the normal time display function, the. Time display means the continuous time display again, and the switches S ₁ and S 2 serve as time correction switches.

In addition, the switch S _{4 is provided} as a system reset switch and the further switch S _{5 is provided} as a stop switch for counting the counter circuit 2.

309830/1122

Dipl.-Ing. Heinz Lesser, patent attorney D -8 Munich 81, Co: imostraße 81 · Telephone: (0811) 95 38

By resetting and influencing the beginning of the Counting can be used to correct the seconds signal.

In connection with the illustrated embodiment a wristwatch equipped according to the invention, a system was described with which a time indication can be keyed into a timer device. However, other timing devices can also be used in a similar manner provide, for example, with a presettable counter circuit for substitutions and required time entry.

As described above, in this embodiment, the display devices and the Use the correction switch twice; this benefit is increased in the event that the time display is expanded to include the day and date.

309830/1122

Claims (6)

Dipl .-! Ng. Heinz Lesser, f'otentcnwalt D -8 Mündien 81, CosJmastraße 81 · Telephone: (0811) 95 38 "■ · 7 - PATENT CLAIMS IV Digitally displaying wristwatch or the like with a crystal oscillator, counting and evaluation circuits, a number of display devices and a number of switches for setting and / or resetting the display devices, characterized in that a memory circuit arrangement (6, 7) is used to form a timer device. is provided which can be connected to the display device (16) and / or at least one of the switches ( _{1, 2,} 4, 5) with the aid of a switching device (13, S 3). 2. clock according to claim 1, characterized in that the changeover device has a changeover contact (S_) having. 3. clock according to claim 2, characterized in that the changeover contact is designed as a slide switch (13, S ₃ ). 4. Clock according to one of the preceding claims, characterized in that the memory circuit arrangement has memory circuits (§, 7) for the minute and hour values up / down. 5. Clock according to one of the preceding claims, characterized in that the evaluation circuits a selection circuit (9) and a coincidence circuit (8). 309830/1122 Dipl.-Ing. Heinz Lesser, Potentanwalt Q - 8 Munich 81, Cosimastraße 81 Telephone: (0811) 95 38 20 - R - 6. clock according to claim 5, characterized by «that an acoustic and / or optical alarm device is assigned to the coincidence circuit (8). 309830/1122